conf(env) Kuiper can be configured via env variables

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Removed unused function

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Formatting applied

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Tested env is unset before test

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Test checks current setting in the config file before start

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Loading mechanism for envs

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

kuiper loading mechanism applied in whole app

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Formatting applied

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Dependency issue fixed

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

removed kuiper conf util from deploy

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

missing dependency added

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

fixed mqtt source config loading

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

conf test fix

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Fixes from review, handling of camel cased properties and conversion of map into the struct

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

formatting fix

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

EnvMapping struct created

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Prefix moved to struct mappnig envs

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Added empty string in no env mapping

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Test commit

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Formatting fix

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Struct for mapping of envs is used

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Mapping is not needed

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Maps as config entities are not normalized

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Proper config file is loaded

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

conf(env) Kuiper can be configured via env variables

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Removed unused function

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Formatting applied

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Tested env is unset before test

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Test checks current setting in the config file before start

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Loading mechanism for envs

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

kuiper loading mechanism applied in whole app

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Formatting applied

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Dependency issue fixed

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

removed kuiper conf util from deploy

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

missing dependency added

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

fixed mqtt source config loading

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

conf test fix

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Fixes from review, handling of camel cased properties and conversion of map into the struct

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

formatting fix

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

EnvMapping struct created

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Prefix moved to struct mappnig envs

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Added empty string in no env mapping

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Test commit

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Formatting fix

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Struct for mapping of envs is used

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Mapping is not needed

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Maps as config entities are not normalized

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>
Signed-off-by: Jiyong Huang <huangjy@emqx.io>

Fixes after merge

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

In case of map config type, camel case is taken from json if exists

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Added missing json file for tests

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

Fixed json name replacement

Signed-off-by: Robert Wadowski <robert.wadowski1@gmail.com>

cmd/kuiper/main.go

@@ -20,7 +20,6 @@ import (
 	"github.com/lf-edge/ekuiper/internal/conf"
 	"github.com/lf-edge/ekuiper/internal/pkg/model"
 	"github.com/urfave/cli"
-	"gopkg.in/yaml.v3"
 	"io/ioutil"
 	"net/rpc"
 	"os"
@@ -34,7 +33,7 @@ type clientConf struct {
 	Port int    `yaml:"port"`
 }
 
-var clientYaml = "client.yaml"
+const ClientYaml = "client.yaml"
 
 func streamProcess(client *rpc.Client, args string) {
 	var reply string
@@ -64,22 +63,20 @@ func main() {
 	//		Usage: "the name of stream",
 	//	}}
 
-	b, err := conf.LoadConf(clientYaml)
+	var cfg map[string]clientConf
+	err := conf.LoadConfigByName(ClientYaml, &cfg)
 	if err != nil {
 		conf.Log.Fatal(err)
+		fmt.Printf("Failed to load config file with error %s.\n", err)
 	}
-	var cfg map[string]clientConf
 	var config *clientConf
-	if err := yaml.Unmarshal(b, &cfg); err != nil {
-		fmt.Printf("Failed to load config file with error %s.\n", err)
+	c, ok := cfg["basic"]
+	if !ok {
+		fmt.Printf("No basic config in client.yaml, will use the default configuration.\n")
 	} else {
-		c, ok := cfg["basic"]
-		if !ok {
-			fmt.Printf("No basic config in client.yaml, will use the default configuration.\n")
-		} else {
-			config = &c
-		}
+		config = &c
 	}
+
 	if config == nil {
 		config = &clientConf{
 			Host: "127.0.0.1",

deploy/docker/Dockerfile

@@ -23,10 +23,6 @@ RUN apt update && apt install -y pkg-config libczmq-dev
 RUN make build_with_edgex \
     && ln -s /go/kuiper/_build/kuiper-$(git describe --tags --always)-$(go env GOOS)-$(go env GOARCH) /usr/local/kuiper
 
-RUN go build  -o kuiper_conf_util deploy/docker/conf_util.go \
-    && if [ "$(uname -m)" != "aarch64" ]; then apt install -y upx && upx ./kuiper_conf_util; fi \
-    && ln -s /go/kuiper/kuiper_conf_util /usr/bin/kuiper_conf_util
-
 RUN ln -s /go/kuiper/deploy/docker/docker-entrypoint.sh /usr/bin/docker-entrypoint.sh
 
 EXPOSE 9081 20498

deploy/docker/Dockerfile-alpine

@@ -19,8 +19,6 @@ COPY . /go/kuiper
 WORKDIR /go/kuiper
 
 RUN apk add gcc make git libc-dev binutils-gold pkgconfig zeromq-dev 
-RUN go build  -o kuiper_conf_util deploy/docker/conf_util.go \
-    && if [ "$(uname -m)" = "x86_64" ]; then apk add upx && upx ./kuiper_conf_util; fi
 RUN make build_with_edgex
 
 FROM alpine:3.12
@@ -49,7 +47,6 @@ RUN adduser -DH -s /sbin/nologin -u ${KUIPER_USER_ID} ${KUIPER_USER} && \
 USER ${KUIPER_USER}
 
 COPY --chown=${KUIPER_USER}:${KUIPER_USER} ./deploy/docker/docker-entrypoint.sh /usr/bin/docker-entrypoint.sh
-COPY --chown=${KUIPER_USER}:${KUIPER_USER} --from=builder /go/kuiper/kuiper_conf_util /usr/bin/kuiper_conf_util
 COPY --chown=${KUIPER_USER}:${KUIPER_USER} --from=builder /go/kuiper/_build/kuiper-* /kuiper/
 
 VOLUME ["${KUIPER_HOME}/etc", "${KUIPER_HOME}/data", "${KUIPER_HOME}/plugins", "${KUIPER_HOME}/log"]

deploy/docker/Dockerfile-slim

@@ -19,14 +19,11 @@ COPY . /go/kuiper
 WORKDIR /go/kuiper
 
 RUN apt update && apt install -y pkg-config libczmq-dev
-RUN go build  -o kuiper_conf_util deploy/docker/conf_util.go \
-    && if [ "$(uname -m)" = "x86_64" ]; then apt install -y upx && upx ./kuiper_conf_util; fi
 RUN make build_with_edgex
 
 FROM debian:10
 
 COPY ./deploy/docker/docker-entrypoint.sh /usr/bin/docker-entrypoint.sh
-COPY --from=builder /go/kuiper/kuiper_conf_util /usr/bin/kuiper_conf_util
 COPY --from=builder /go/kuiper/_build/kuiper-* /kuiper/
 
 RUN apt update && apt install -y pkg-config libczmq-dev wget

deploy/docker/conf_util.go

@@ -1,224 +0,0 @@
-// Copyright 2021 EMQ Technologies Co., Ltd.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package main
-
-import (
-	"fmt"
-	"gopkg.in/yaml.v3"
-	"io/ioutil"
-	"os"
-	"strconv"
-	"strings"
-)
-
-var khome = os.Getenv("KUIPER_HOME")
-
-var fileMap = map[string]string{
-	"edgex":       khome + "/etc/sources/edgex.yaml",
-	"random":      khome + "/etc/sources/random.yaml",
-	"zmq":         khome + "/etc/sources/zmq.yaml",
-	"httppull":    khome + "/etc/sources/httppull.yaml",
-	"mqtt_source": khome + "/etc/mqtt_source.yaml",
-	"kuiper":      khome + "/etc/kuiper.yaml",
-	"client":      khome + "/etc/client.yaml",
-}
-
-var file_keys_map = map[string]map[string]string{
-	"edgex": {
-		"CLIENTID":          "ClientId",
-		"USERNAME":          "Username",
-		"PASSWORD":          "Password",
-		"QOS":               "Qos",
-		"KEEPALIVE":         "KeepAlive",
-		"RETAINED":          "Retained",
-		"CONNECTIONPAYLOAD": "ConnectionPayload",
-		"CERTFILE":          "CertFile",
-		"KEYFILE":           "KeyFile",
-		"CERTPEMBLOCK":      "CertPEMBlock",
-		"KEYPEMBLOCK":       "KeyPEMBlock",
-		"SKIPCERTVERIFY":    "SkipCertVerify",
-		"MESSAGETYPE":       "messageType",
-	},
-	"mqtt_source": {
-		"SHAREDSUBSCRIPTION": "sharedSubscription",
-		"CERTIFICATIONPATH":  "certificationPath",
-		"PRIVATEKEYPATH":     "privateKeyPath",
-		"KUBEEDGEVERSION":    "kubeedgeVersion",
-		"KUBEEDGEMODELFILE":  "kubeedgeModelFile",
-	},
-	"kuiper": {
-		"CONSOLELOG":         "consoleLog",
-		"FILELOG":            "fileLog",
-		"RESTPORT":           "restPort",
-		"RESTTLS":            "restTls",
-		"PROMETHEUSPORT":     "prometheusPort",
-		"PLUGINHOSTS":        "pluginHosts",
-		"CHECKPOINTINTERVAL": "checkpointInterval",
-		"CACHETHRESHOLD":     "cacheThreshold",
-		"CACHETRIGGERCOUNT":  "cacheTriggerCount",
-		"DISABLECACHE":       "disableCache",
-	},
-}
-
-func main() {
-	fmt.Println(fileMap["edgex"])
-	files := make(map[string]map[string]interface{})
-	ProcessEnv(files, os.Environ())
-	for f, v := range files {
-		if bs, err := yaml.Marshal(v); err != nil {
-			fmt.Println(err)
-		} else {
-			message := fmt.Sprintf("-------------------\nConf file %s: \n %s", f, toPrintableString(v))
-			fmt.Println(message)
-			if fname, ok := fileMap[f]; ok {
-				if e := ioutil.WriteFile(fname, bs, 0644); e != nil {
-					fmt.Println(e)
-				} else {
-					fmt.Printf("%s updated\n", fname)
-				}
-			}
-		}
-	}
-}
-
-func printable(m map[string]interface{}) map[string]interface{} {
-	printableMap := make(map[string]interface{})
-	for k, v := range m {
-		if strings.EqualFold(k, "password") {
-			printableMap[k] = "*"
-		} else {
-			if vm, ok := v.(map[string]interface{}); ok {
-				printableMap[k] = printable(vm)
-			} else {
-				printableMap[k] = v
-			}
-		}
-	}
-	return printableMap
-}
-
-func toPrintableString(m map[string]interface{}) string {
-	p := printable(m)
-	b, _ := yaml.Marshal(p)
-	return string(b)
-}
-
-func ProcessEnv(files map[string]map[string]interface{}, vars []string) {
-	for _, e := range vars {
-		pair := strings.SplitN(e, "=", 2)
-		if len(pair) != 2 {
-			fmt.Printf("invalid env %s, skip it.\n", e)
-			continue
-		}
-
-		valid := false
-		for k := range fileMap {
-			if strings.HasPrefix(pair[0], strings.ToUpper(k)) {
-				valid = true
-				break
-			}
-		}
-		if !valid {
-			continue
-		} else {
-			fmt.Printf("Find env: %s, start to handle it.\n", e)
-		}
-
-		env_v := strings.ReplaceAll(pair[0], "__", ".")
-		keys := strings.Split(env_v, ".")
-		for i, v := range keys {
-			keys[i] = v
-		}
-
-		if len(keys) < 2 {
-			fmt.Printf("not concerned env %s, skip it.\n", e)
-			continue
-		} else {
-			k := strings.ToLower(keys[0])
-			if v, ok := files[k]; !ok {
-				if data, err := ioutil.ReadFile(fileMap[k]); err != nil {
-					fmt.Printf("%s\n", err)
-				} else {
-					m := make(map[string]interface{})
-					err = yaml.Unmarshal(data, &m)
-					if err != nil {
-						fmt.Println(err)
-					}
-					files[k] = m
-					Handle(k, m, keys[1:], pair[1])
-
-				}
-			} else {
-				Handle(k, v, keys[1:], pair[1])
-			}
-		}
-	}
-}
-
-func Handle(file string, conf map[string]interface{}, skeys []string, val string) {
-	key := getKey(file, skeys[0])
-	if len(skeys) == 1 {
-		conf[key] = getValueType(val)
-	} else if len(skeys) >= 2 {
-		if v, ok := conf[key]; ok {
-			if v1, ok1 := v.(map[string]interface{}); ok1 {
-				Handle(file, v1, skeys[1:], val)
-			} else {
-				fmt.Printf("Not expected map: %v\n", v)
-			}
-		} else {
-			v1 := make(map[string]interface{})
-			conf[key] = v1
-			Handle(file, v1, skeys[1:], val)
-		}
-	}
-}
-
-func getKey(file string, key string) string {
-	if m, ok := file_keys_map[file][key]; ok {
-		return m
-	} else {
-		return strings.ToLower(key)
-	}
-}
-
-func getValueType(val string) interface{} {
-	val = strings.Trim(val, " ")
-	if strings.HasPrefix(val, "[") && strings.HasSuffix(val, "]") {
-		val = strings.ReplaceAll(val, "[", "")
-		val = strings.ReplaceAll(val, "]", "")
-		vals := strings.Split(val, ",")
-		var ret []interface{}
-		for _, v := range vals {
-			if i, err := strconv.ParseInt(v, 10, 64); err == nil {
-				ret = append(ret, i)
-			} else if b, err := strconv.ParseBool(v); err == nil {
-				ret = append(ret, b)
-			} else if f, err := strconv.ParseFloat(v, 64); err == nil {
-				ret = append(ret, f)
-			} else {
-				ret = append(ret, v)
-			}
-		}
-		return ret
-	} else if i, err := strconv.ParseInt(val, 10, 64); err == nil {
-		return i
-	} else if b, err := strconv.ParseBool(val); err == nil {
-		return b
-	} else if f, err := strconv.ParseFloat(val, 64); err == nil {
-		return f
-	}
-	return val
-}

deploy/docker/conf_util_test.go

@@ -1,262 +0,0 @@
-// Copyright 2021 EMQ Technologies Co., Ltd.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package main
-
-import (
-	"fmt"
-	"reflect"
-	"testing"
-)
-
-func TestHandle(t *testing.T) {
-	var tests = []struct {
-		config map[string]interface{}
-		skeys  []string
-		val    string
-		exp    map[string]interface{}
-	}{
-		{
-			config: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "tcp",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId": "client1",
-					},
-				},
-			},
-			skeys: []string{"default", "protocol"},
-			val:   "ssl",
-			exp: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "ssl",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId": "client1",
-					},
-				},
-			},
-		},
-
-		{
-			config: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "tcp",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId": "client1",
-					},
-				},
-			},
-			skeys: []string{"default", "optional", "CLIENTID"},
-			val:   "client2",
-			exp: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "tcp",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId": "client2",
-					},
-				},
-			},
-		},
-
-		{
-			config: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "tcp",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId": "client1",
-					},
-				},
-			},
-			skeys: []string{"default", "optional", "KEEPALIVE"},
-			val:   "6000",
-			exp: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "tcp",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId":  "client1",
-						"KeepAlive": int64(6000),
-					},
-				},
-			},
-		},
-
-		{
-			config: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "tcp",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId": "client1",
-					},
-				},
-			},
-			skeys: []string{"default", "optional", "RETAINED"},
-			val:   "true",
-			exp: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "tcp",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId": "client1",
-						"Retained": true,
-					},
-				},
-			},
-		},
-
-		{
-			config: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "tcp",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId": "client1",
-					},
-				},
-			},
-			skeys: []string{"default", "optional", "test"},
-			val:   "3.14",
-			exp: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "tcp",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId": "client1",
-						"test":     3.14,
-					},
-				},
-			},
-		},
-
-		{
-			config: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "tcp",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId": "client1",
-					},
-				},
-			},
-			skeys: []string{"application_conf", "test"},
-			val:   "ssl",
-			exp: map[string]interface{}{
-				"default": map[string]interface{}{
-					"protocol": "tcp",
-					"port":     5563,
-					"optional": map[string]interface{}{
-						"ClientId": "client1",
-					},
-				},
-				"application_conf": map[string]interface{}{
-					"test": "ssl",
-				},
-			},
-		},
-	}
-
-	for i, tt := range tests {
-		Handle("edgex", tt.config, tt.skeys, tt.val)
-		if !reflect.DeepEqual(tt.exp, tt.config) {
-			t.Errorf("%d \tresult mismatch:\n\nexp=%#v\n\ngot=%#v\n\n", i, tt.exp, tt.config)
-		}
-	}
-}
-
-func TestProcessEnv(t *testing.T) {
-	fileMap["edgex"] = "test/edgex.yaml"
-	var tests = []struct {
-		vars []string
-		file string
-		expt map[string]interface{}
-		out  string
-	}{
-		{
-			vars: []string{
-				"EDGEX__DEFAULT__TYPE=zmq",
-				"EDGEX__DEFAULT__MESSAGETYPE=event",
-				"EDGEX__DEFAULT__OPTIONAL__CLIENTID=clientid_0000",
-				"EDGEX__DEFAULT__OPTIONAL__PASSWORD=should_not_print",
-				"EDGEX__APPLICATION_CONF__PROTOCOL=ssl",
-			},
-			file: "edgex",
-			expt: map[string]interface{}{
-				"default": map[string]interface{}{
-					"messageType": "event",
-					"protocol":    "tcp",
-					"type":        "zmq",
-					"optional": map[string]interface{}{
-						"ClientId": "clientid_0000",
-						"Password": "should_not_print",
-					},
-				},
-				"application_conf": map[string]interface{}{
-					"protocol": "ssl",
-				},
-			},
-			out: "application_conf:\n    protocol: ssl\ndefault:\n    messageType: event\n    optional:\n        ClientId: clientid_0000\n        Password: '*'\n    protocol: tcp\n    type: zmq\n",
-		},
-	}
-	files := make(map[string]map[string]interface{})
-	for i, tt := range tests {
-		ProcessEnv(files, tt.vars)
-		if !reflect.DeepEqual(tt.expt, files[tt.file]) {
-			t.Errorf("%d \tresult mismatch:\n\nexp=%#v\n\ngot=%#v\n\n", i, tt.expt, files[tt.file])
-		}
-		for f, v := range files {
-			p := toPrintableString(v)
-			if !reflect.DeepEqual(tt.out, p) {
-				t.Errorf("%d \tresult mismatch:\n\nexp=%#v\n\ngot=%#v\n\n", i, tt.out, p)
-			}
-			message := fmt.Sprintf("-------------------\nConf file %s: \n %s", f, p)
-			fmt.Println(message)
-		}
-	}
-}
-
-func TestProcessEnvArrayValue(t *testing.T) {
-	fileMap["mqtt_source"] = "test/mqtt_source.yaml"
-	var tests = []struct {
-		vars []string
-		file string
-		expt map[string]interface{}
-	}{
-		{
-			vars: []string{
-				"MQTT_SOURCE__DEFAULT__SERVERS=[tcp://10.211.55.12:1883,tcp://10.211.55.13:1883]",
-				"MQTT_SOURCE__DEFAULT__TEST=[1,2]",
-			},
-			file: "mqtt_source",
-			expt: map[string]interface{}{
-				"default": map[string]interface{}{
-					"servers": []interface{}{"tcp://10.211.55.12:1883", "tcp://10.211.55.13:1883"},
-					"test":    []interface{}{int64(1), int64(2)},
-				},
-			},
-		},
-	}
-	files := make(map[string]map[string]interface{})
-	for i, tt := range tests {
-		ProcessEnv(files, tt.vars)
-		if !reflect.DeepEqual(tt.expt, files[tt.file]) {
-			t.Errorf("%d \tresult mismatch:\n\nexp=%#v\n\ngot=%#v\n\n", i, tt.expt, files[tt.file])
-		}
-	}
-}

deploy/docker/docker-entrypoint.sh

@@ -23,6 +23,4 @@ fi
 
 KUIPER_HOME=${KUIPER_HOME:-"/kuiper"}
 
-/usr/bin/kuiper_conf_util
-
 exec "$@"

docs/en_US/operation/configuration_file.md

@@ -1,5 +1,25 @@
 # Basic configurations
+
 The configuration file for eKuiper is at ``$kuiper/etc/kuiper.yaml``. The configuration file is yaml format.
+Application can be configured through environment variables. Environment variables are taking precedence over their counterparts
+in the yaml file. In order to use env variable for given config we must use formatting as follows:
+`KUIPER__` prefix + config path elements connected by `__`.
+Example, in case of config:
+
+```yaml
+basic:
+  # true|false, with debug level, it prints more debug info
+  debug: false
+  # true|false, if it's set to true, then the log will be print to console
+  consoleLog: false
+  # true|false, if it's set to true, then the log will be print to log file
+  fileLog: true
+  # How many hours to split the file
+  rotateTime: 24
+  # Maximum file storage hours
+  maxAge: 72
+```
+for debug option in basic following env is valid `KUIPER_BASIC_DEBUG=true` and if used debug value will be set to true.
 
 ## Log level
 

etc/sources/test.json

@@ -0,0 +1,66 @@
+{
+  "libs": [],
+  "about": {
+    "trial": false,
+    "author": {
+      "name": "EMQ",
+      "email": "contact@emqx.io",
+      "company": "EMQ Technologies Co., Ltd",
+      "website": "https://www.emqx.io"
+    },
+    "helpUrl": {
+      "en_US": "https://github.com/lf-edge/ekuiper/blob/master/docs/en_US/rules/sources/http_pull.md",
+      "zh_CN": "https://github.com/lf-edge/ekuiper/blob/master/docs/zh_CN/rules/sources/http_pull.md"
+    },
+    "description": {
+      "en_US": "Desc US",
+      "zh_CN": "Desc CH"
+    }
+  },
+  "properties": {
+    "default": [
+      {
+        "name": "FIELDS",
+        "optional": false,
+        "control": "text",
+        "type": "array",
+        "hint": {
+          "en_US": "test",
+          "zh_CN": "test"
+        },
+        "label": {
+          "en_US": "FIELDS",
+          "zh_CN": "FIELDS"
+        }
+      },
+      {
+        "name": "QUERY_TABLE",
+        "optional": false,
+        "control": "text",
+        "type": "string",
+        "hint": {
+          "en_US": "test",
+          "zh_CN": "test"
+        },
+        "label": {
+          "en_US": "QUERY_TABLE",
+          "zh_CN": "QUERY_TABLE"
+        }
+      },
+      {
+        "name": "ROWCOUNT",
+        "optional": false,
+        "control": "number",
+        "type": "int",
+        "hint": {
+          "en_US": "test",
+          "zh_CN": "test"
+        },
+        "label": {
+          "en_US": "ROWCOUNT",
+          "zh_CN": "ROWCOUNT"
+        }
+      }
+    ]
+  }
+}

extensions.mod

@@ -4,14 +4,17 @@ require (
 	github.com/Masterminds/sprig/v3 v3.2.1
 	github.com/PaesslerAG/gval v1.0.0
 	github.com/PaesslerAG/jsonpath v0.1.1
+	github.com/alicebob/miniredis/v2 v2.15.1
 	github.com/benbjohnson/clock v1.0.0
+	github.com/cespare/xxhash/v2 v2.1.1 // indirect
 	github.com/eclipse/paho.mqtt.golang v1.3.5
 	github.com/edgexfoundry/go-mod-core-contracts/v2 v2.0.0
 	github.com/edgexfoundry/go-mod-messaging/v2 v2.0.1
 	github.com/fastly/go-utils v0.0.0-20180712184237-d95a45783239 // indirect
 	github.com/gdexlab/go-render v1.0.1
 	github.com/golang-collections/collections v0.0.0-20130729185459-604e922904d3
-	github.com/golang/protobuf v1.5.0
+	github.com/golang/protobuf v1.5.2
+	github.com/gomodule/redigo v2.0.0+incompatible
 	github.com/google/uuid v1.2.0
 	github.com/gorilla/handlers v1.4.2
 	github.com/gorilla/mux v1.7.3
@@ -25,6 +28,7 @@ require (
 	github.com/lestrrat-go/strftime v1.0.3 // indirect
 	github.com/mattn/go-sqlite3 v1.14.5
 	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/mitchellh/mapstructure v1.4.1
 	github.com/msgpack-rpc/msgpack-rpc-go v0.0.0-20131026060856-c76397e1782b
 	github.com/msgpack/msgpack-go v0.0.0-20130625150338-8224460e6fa3 // indirect
 	github.com/pebbe/zmq4 v1.2.7
@@ -34,13 +38,12 @@ require (
 	github.com/tebeka/strftime v0.1.5 // indirect
 	github.com/ugorji/go/codec v1.2.5
 	github.com/urfave/cli v1.22.0
-	golang.org/x/net v0.0.0-20200625001655-4c5254603344
-	google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013
-	google.golang.org/grpc v1.36.1
+	golang.org/x/net v0.0.0-20210428140749-89ef3d95e781
+	google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c
+	google.golang.org/grpc v1.38.0
 	google.golang.org/protobuf v1.26.0
 	gopkg.in/ini.v1 v1.62.0
-	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c
-	github.com/lf-edge/ekuiper/extensions v0.0.0
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 )
 
 replace github.com/lf-edge/ekuiper/extensions => ./extensions

extensions.sum

@@ -1,7 +1,10 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
 github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
+github.com/Masterminds/semver/v3 v3.1.1 h1:hLg3sBzpNErnxhQtUy/mmLR2I9foDujNK030IGemrRc=
 github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
+github.com/Masterminds/sprig/v3 v3.2.1 h1:n6EPaDyLSvCEa3frruQvAiHuNp2dhBlMSmkEr+HuzGc=
 github.com/Masterminds/sprig/v3 v3.2.1/go.mod h1:UoaO7Yp8KlPnJIYWTFkMaqPUYKTfGFPhxNuwnnxkKlk=
 github.com/PaesslerAG/gval v1.0.0 h1:GEKnRwkWDdf9dOmKcNrar9EA1bz1z9DqPIO1+iLzhd8=
 github.com/PaesslerAG/gval v1.0.0/go.mod h1:y/nm5yEyTeX6av0OfKJNp9rBNj2XrGhAf5+v24IBN1I=
@@ -12,61 +15,62 @@ github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuy
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a h1:HbKu58rmZpUGpz5+4FfNmIU+FmZg2P3Xaj2v2bfNWmk=
+github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
+github.com/alicebob/miniredis/v2 v2.15.1 h1:Fw+ixAJPmKhCLBqDwHlTDqxUxp0xjEwXczEpt1B6r7k=
+github.com/alicebob/miniredis/v2 v2.15.1/go.mod h1:gquAfGbzn92jvtrSC69+6zZnwSODVXVpYDRaGhWaL6I=
 github.com/benbjohnson/clock v1.0.0 h1:78Jk/r6m4wCi6sndMpty7A//t4dw/RW5fV4ZgDVfX1w=
 github.com/benbjohnson/clock v1.0.0/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/buger/jsonparser v0.0.0-20191004114745-ee4c978eae7e h1:oJCXMss/3rg5F6Poy9wG3JQusc58Mzk5B9Z6wSnssNE=
-github.com/buger/jsonparser v0.0.0-20191004114745-ee4c978eae7e/go.mod h1:errmMKH8tTB49UR2A8C8DPYkyudelsYJwJFaZHQ6ik8=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash/v2 v2.1.0/go.mod h1:dgIUBU3pDso/gPgZ1osOZ0iQf77oPR28Tjxl5dIMyVM=
+github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
+github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
-github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
+github.com/cpuguy83/go-md2man v1.0.10 h1:BSKMNlYxDvnunlTymqtgONjNnaRV1sTpcovwwjF22jk=
 github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/disintegration/imaging v1.6.2/go.mod h1:44/5580QXChDfwIclfc/PCwrr44amcmDAg8hxG0Ewe4=
-github.com/eclipse/paho.mqtt.golang v1.2.0/go.mod h1:H9keYFcgq3Qr5OUJm/JZI/i6U7joQ8SYLhZwfeOo6Ts=
+github.com/eclipse/paho.mqtt.golang v1.3.5 h1:sWtmgNxYM9P2sP+xEItMozsR3w0cqZFlqnNN1bdl41Y=
 github.com/eclipse/paho.mqtt.golang v1.3.5/go.mod h1:eTzb4gxwwyWpqBUHGQZ4ABAV7+Jgm1PklsYT/eo8Hcc=
-github.com/edgexfoundry/go-mod-core-contracts v0.1.80/go.mod h1:QcFaPjN3PIadXlL4hZHmydwCDR+yt7T9BycQCimHvYE=
-github.com/edgexfoundry/go-mod-core-contracts/v2 v2.0.0-dev.100/go.mod h1:pfXURRetgIto0GR0sCjDrfa71hqJ1wxmQWi/mOzWfWU=
+github.com/edgexfoundry/go-mod-core-contracts/v2 v2.0.0 h1:tvfovdyoHOb392L59hiuA90awiXLX5IR3HOgbcWZkVQ=
 github.com/edgexfoundry/go-mod-core-contracts/v2 v2.0.0/go.mod h1:pfXURRetgIto0GR0sCjDrfa71hqJ1wxmQWi/mOzWfWU=
-github.com/edgexfoundry/go-mod-messaging v0.1.30/go.mod h1:5/82RY1fkf7yRU+Gxvuk/4jbKXPMOuRTDfkFTJxlF3Y=
-github.com/edgexfoundry/go-mod-messaging/v2 v2.0.0-dev.16/go.mod h1:bLKWB9yeOHLZoQtHLZlGwz8MjsMJIvHDFce7CcUb4fE=
-github.com/edgexfoundry/go-mod-messaging/v2 v2.0.0/go.mod h1:GNUQrvyN0gJd8C5d/7q7LcRjJYZqrceYj6/OmXI33O0=
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 github.com/edgexfoundry/go-mod-messaging/v2 v2.0.1/go.mod h1:bLKWB9yeOHLZoQtHLZlGwz8MjsMJIvHDFce7CcUb4fE=
-github.com/emqx/kuiper v0.0.0-20210528134227-7e6a6a028a6f/go.mod h1:Cv3+JK88Uv8CVKNQyRLKaFoZz9pPdhuDTZ2nSz/UiOU=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
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 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/faiface/glhf v0.0.0-20181018222622-82a6317ac380/go.mod h1:zqnPFFIuYFFxl7uH2gYByJwIVKG7fRqlqQCbzAnHs9g=
-github.com/faiface/mainthread v0.0.0-20171120011319-8b78f0a41ae3/go.mod h1:VEPNJUlxl5KdWjDvz6Q1l+rJlxF2i6xqDeGuGAxa87M=
-github.com/faiface/pixel v0.8.0/go.mod h1:CEUU/s9E82Kqp01Boj1O67KnBskqiLghANqvUJGgDAM=
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 github.com/fastly/go-utils v0.0.0-20180712184237-d95a45783239/go.mod h1:Gdwt2ce0yfBxPvZrHkprdPPTTS3N5rwmLE8T22KBXlw=
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+github.com/fxamacker/cbor/v2 v2.2.0 h1:6eXqdDDe588rSYAi1HfZKbx6YYQO4mxQ9eC6xYpU/JQ=
 github.com/fxamacker/cbor/v2 v2.2.0/go.mod h1:TA1xS00nchWmaBnEIxPSE5oHLuJBAVvqrtAnWBwBCVo=
+github.com/gdexlab/go-render v1.0.1 h1:rxqB3vo5s4n1kF0ySmoNeSPRYkEsyHgln4jFIQY7v0U=
 github.com/gdexlab/go-render v1.0.1/go.mod h1:wRi5nW2qfjiGj4mPukH4UV0IknS1cHD4VgFTmJX5JzM=
-github.com/go-gl/gl v0.0.0-20190320180904-bf2b1f2f34d7/go.mod h1:482civXOzJJCPzJ4ZOX/pwvXBWSnzD4OKMdH4ClKGbk=
-github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
-github.com/go-gl/mathgl v0.0.0-20190713194549-592312d8590a/go.mod h1:yhpkQzEiH9yPyxDUGzkmgScbaBVlhC06qodikEM0ZwQ=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
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-google.golang.org/grpc v1.36.1/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.38.0 h1:/9BgsAsa5nWe26HqOlvlgJnqBuktYOLCgjCPqsa56W0=
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 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -277,22 +342,29 @@ google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpAD
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.25.1-0.20200805231151-a709e31e5d12/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
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extensions/go.sum

@@ -39,7 +39,7 @@ github.com/edgexfoundry/go-mod-messaging/v2 v2.0.1/go.mod h1:bLKWB9yeOHLZoQtHLZl
 github.com/edgexfoundry/go-mod-messaging/v2 v2.0.1/go.mod h1:bLKWB9yeOHLZoQtHLZlGwz8MjsMJIvHDFce7CcUb4fE=
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@@ -63,9 +63,10 @@ github.com/go-playground/locales v0.13.0/go.mod h1:taPMhCMXrRLJO55olJkUXHZBHCxTM
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-github.com/go-redis/redis/v8 v8.4.11 h1:t2lToev01VTrqYQcv+QFbxtGgcf64K+VUMgf9Ap6A/E=
-github.com/go-redis/redis/v8 v8.4.11/go.mod h1:d5yY/TlkQyYBSBHnXUmnf1OrHbyQere5JV4dLKwvXmo=
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@@ -81,14 +82,15 @@ github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvq
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-github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
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@@ -155,18 +157,19 @@ github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRW
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
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-github.com/onsi/gomega v1.10.4 h1:NiTx7EEvBzu9sFOD1zORteLSt3o8gnlvZZwSE9TnY9U=
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 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -213,7 +216,8 @@ github.com/urfave/cli v1.22.0/go.mod h1:b3D7uWrF2GilkNgYpgcg6J+JMUw7ehmNkE8sZdli
 github.com/x448/float16 v0.8.4/go.mod h1:14CWIYCyZA/cWjXOioeEpHeN/83MdbZDRQHoFcYsOfg=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-go.opentelemetry.io/otel v0.16.0 h1:uIWEbdeb4vpKPGITLsRVUS44L5oDbDUCZxn8lkxhmgw=
+github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
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 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
@@ -228,9 +232,12 @@ golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8/go.mod h1:FeLwcggjj3mMvU+o
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
+golang.org/x/lint v0.0.0-20210508222113-6edffad5e616/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
+golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -245,8 +252,10 @@ golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb h1:eBmm0M9fYhWpKZLjQUUKka/LtIxf46G4fxeEz5KJr9U=
-golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
+golang.org/x/net v0.0.0-20210428140749-89ef3d95e781 h1:DzZ89McO9/gWPsQXS/FVKAlG02ZjaQ6AlZRBimEYOd0=
+golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -254,6 +263,8 @@ golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -266,13 +277,20 @@ golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20191010194322-b09406accb47/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f h1:+Nyd8tzPX9R7BWHguqsrbFdRx3WQ/1ib8I44HXV5yTA=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210510120138-977fb7262007 h1:gG67DSER+11cZvqIMb8S8bt0vZtiN6xWYARwirrOSfE=
+golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
-golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
@@ -281,22 +299,26 @@ golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191130070609-6e064ea0cf2d/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200522201501-cb1345f3a375/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200717024301-6ddee64345a6/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
+golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.1.2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
+google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c/go.mod h1:UODoCrxHCcBojKKwX1terBiRUaqAsFqJiF615XL43r0=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.36.1/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -326,8 +348,9 @@ gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=

go.mod

@@ -6,13 +6,14 @@ require (
 	github.com/PaesslerAG/jsonpath v0.1.1
 	github.com/alicebob/miniredis/v2 v2.15.1
 	github.com/benbjohnson/clock v1.0.0
+	github.com/cespare/xxhash/v2 v2.1.1 // indirect
 	github.com/eclipse/paho.mqtt.golang v1.3.5
 	github.com/edgexfoundry/go-mod-core-contracts/v2 v2.0.0
 	github.com/edgexfoundry/go-mod-messaging/v2 v2.0.1
 	github.com/fastly/go-utils v0.0.0-20180712184237-d95a45783239 // indirect
 	github.com/gdexlab/go-render v1.0.1
 	github.com/golang-collections/collections v0.0.0-20130729185459-604e922904d3
-	github.com/golang/protobuf v1.5.0
+	github.com/golang/protobuf v1.5.2
 	github.com/gomodule/redigo v2.0.0+incompatible
 	github.com/google/uuid v1.2.0
 	github.com/gorilla/handlers v1.4.2
@@ -27,6 +28,7 @@ require (
 	github.com/lestrrat-go/strftime v1.0.3 // indirect
 	github.com/mattn/go-sqlite3 v1.14.5
 	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/mitchellh/mapstructure v1.4.1
 	github.com/msgpack-rpc/msgpack-rpc-go v0.0.0-20131026060856-c76397e1782b
 	github.com/msgpack/msgpack-go v0.0.0-20130625150338-8224460e6fa3 // indirect
 	github.com/pebbe/zmq4 v1.2.7
@@ -36,12 +38,12 @@ require (
 	github.com/tebeka/strftime v0.1.5 // indirect
 	github.com/ugorji/go/codec v1.2.5
 	github.com/urfave/cli v1.22.0
-	golang.org/x/net v0.0.0-20200625001655-4c5254603344
-	google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013
-	google.golang.org/grpc v1.36.1
+	golang.org/x/net v0.0.0-20210428140749-89ef3d95e781
+	google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c
+	google.golang.org/grpc v1.38.0
 	google.golang.org/protobuf v1.26.0
 	gopkg.in/ini.v1 v1.62.0
-	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 )
 
 go 1.16

go.sum

@@ -26,8 +26,11 @@ github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+Ce
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/cespare/xxhash/v2 v2.1.0 h1:yTUvW7Vhb89inJ+8irsUqiWjh8iT6sQPZiQzI6ReGkA=
 github.com/cespare/xxhash/v2 v2.1.0/go.mod h1:dgIUBU3pDso/gPgZ1osOZ0iQf77oPR28Tjxl5dIMyVM=
+github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
+github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
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 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
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@@ -46,7 +49,7 @@ github.com/edgexfoundry/go-mod-messaging/v2 v2.0.1 h1:8nT3CiPLIft5RmR+vbmXBW9Kbz
 github.com/edgexfoundry/go-mod-messaging/v2 v2.0.1/go.mod h1:bLKWB9yeOHLZoQtHLZlGwz8MjsMJIvHDFce7CcUb4fE=
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 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
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 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
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 github.com/fastly/go-utils v0.0.0-20180712184237-d95a45783239/go.mod h1:Gdwt2ce0yfBxPvZrHkprdPPTTS3N5rwmLE8T22KBXlw=
@@ -85,8 +88,13 @@ github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:W
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
 github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
-github.com/golang/protobuf v1.5.0 h1:LUVKkCeviFUMKqHa4tXIIij/lbhnMbP7Fn5wKdKkRh4=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
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@@ -156,6 +164,8 @@ github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5
 github.com/mitchellh/copystructure v1.0.0/go.mod h1:SNtv71yrdKgLRyLFxmLdkAbkKEFWgYaq1OVrnRcwhnw=
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 github.com/mitchellh/copystructure v1.2.0/go.mod h1:qLl+cE2AmVv+CoeAwDPye/v+N2HKCj9FbZEVFJRxO9s=
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@@ -231,6 +241,8 @@ github.com/x448/float16 v0.8.4 h1:qLwI1I70+NjRFUR3zs1JPUCgaCXSh3SW62uAKT1mSBM=
 github.com/x448/float16 v0.8.4/go.mod h1:14CWIYCyZA/cWjXOioeEpHeN/83MdbZDRQHoFcYsOfg=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
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 github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da h1:NimzV1aGyq29m5ukMK0AMWEhFaL/lrEOaephfuoiARg=
 github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da/go.mod h1:E1AXubJBdNmFERAOucpDIxNzeGfLzg0mYh+UfMWdChA=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
@@ -244,9 +256,12 @@ golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
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 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
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 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
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 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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@@ -259,8 +274,10 @@ golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
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 golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
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 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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@@ -268,6 +285,7 @@ golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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@@ -277,11 +295,19 @@ golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5h
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@@ -290,24 +316,28 @@ golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3
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+google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c h1:wtujag7C+4D6KMoulW9YauvK2lgdvCMS260jsqqBXr0=
+google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c/go.mod h1:UODoCrxHCcBojKKwX1terBiRUaqAsFqJiF615XL43r0=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.36.1 h1:cmUfbeGKnz9+2DD/UYsMQXeqbHZqZDs4eQwW0sFOpBY=
-google.golang.org/grpc v1.36.1/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.38.0 h1:/9BgsAsa5nWe26HqOlvlgJnqBuktYOLCgjCPqsa56W0=
+google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -339,8 +369,9 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=

internal/conf/conf.go

@@ -19,35 +19,19 @@ import (
 	"github.com/lestrrat-go/file-rotatelogs"
 	"github.com/lf-edge/ekuiper/pkg/api"
 	"github.com/sirupsen/logrus"
-	"gopkg.in/yaml.v3"
 	"io"
-	"io/ioutil"
 	"os"
 	"path"
 	"time"
 )
 
-const StreamConf = "kuiper.yaml"
+const ConfFileName = "kuiper.yaml"
 
 var (
 	Config    *KuiperConf
 	IsTesting bool
 )
 
-func LoadConf(confName string) ([]byte, error) {
-	confDir, err := GetConfLoc()
-	if err != nil {
-		return nil, err
-	}
-
-	file := path.Join(confDir, confName)
-	b, err := ioutil.ReadFile(file)
-	if err != nil {
-		return nil, err
-	}
-	return b, nil
-}
-
 type tlsConf struct {
 	Certfile string `yaml:"certfile"`
 	Keyfile  string `yaml:"keyfile"`
@@ -90,11 +74,10 @@ type KuiperConf struct {
 }
 
 func InitConf() {
-	b, err := LoadConf(StreamConf)
+	cpath, err := GetConfLoc()
 	if err != nil {
-		Log.Fatal(err)
+		panic(err)
 	}
-
 	kc := KuiperConf{
 		Rule: api.RuleOption{
 			LateTol:            1000,
@@ -104,11 +87,13 @@ func InitConf() {
 			SendError:          true,
 		},
 	}
-	if err := yaml.Unmarshal(b, &kc); err != nil {
+
+	err = LoadConfigFromPath(path.Join(cpath, ConfFileName), &kc)
+	if err != nil {
 		Log.Fatal(err)
-	} else {
-		Config = &kc
+		panic(err)
 	}
+	Config = &kc
 	if 0 == len(Config.Basic.Ip) {
 		Config.Basic.Ip = "0.0.0.0"
 	}

internal/conf/load.go

@@ -0,0 +1,237 @@
+// INTECH Process Automation Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package conf
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"github.com/mitchellh/mapstructure"
+	"gopkg.in/yaml.v3"
+	"io/ioutil"
+	"os"
+	"path"
+	"path/filepath"
+	"strconv"
+	"strings"
+)
+
+const Separator = "__"
+const Prefix = "KUIPER"
+
+func LoadConfig(c interface{}) error {
+	return LoadConfigByName(ConfFileName, c)
+}
+
+func LoadConfigByName(name string, c interface{}) error {
+	dir, err := GetConfLoc()
+	if err != nil {
+		return err
+	}
+	p := path.Join(dir, name)
+	return LoadConfigFromPath(p, c)
+}
+
+func LoadConfigFromPath(path string, c interface{}) error {
+	b, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+	configMap := make(map[string]interface{})
+	err = yaml.Unmarshal(b, &configMap)
+	if err != nil {
+		return err
+	}
+	configs := normalize(configMap)
+	if _, success := c.(*map[string]interface{}); success {
+		names, err := extractKeysFromJsonIfExists(path)
+		if err != nil {
+			return err
+		}
+		applyKeys(configs, names)
+	}
+	err = process(configs, os.Environ())
+	if err != nil {
+		return err
+	}
+	return mapstructure.Decode(configs, c)
+}
+
+func process(configMap map[string]interface{}, variables []string) error {
+	for _, e := range variables {
+		if !strings.HasPrefix(e, Prefix) {
+			continue
+		}
+		pair := strings.SplitN(e, "=", 2)
+		if len(pair) != 2 {
+			return fmt.Errorf("wrong format of variable")
+		}
+		keys := nameToKeys(trimPrefix(pair[0]))
+		handle(configMap, keys, pair[1])
+	}
+	return nil
+}
+
+func handle(conf map[string]interface{}, keysLeft []string, val string) {
+	key := getConfigKey(keysLeft[0])
+	if len(keysLeft) == 1 {
+		conf[key] = getValueType(val)
+	} else if len(keysLeft) >= 2 {
+		if v, ok := conf[key]; ok {
+			if casted, castSuccess := v.(map[string]interface{}); castSuccess {
+				handle(casted, keysLeft[1:], val)
+			} else {
+				panic("not expected type")
+			}
+		} else {
+			next := make(map[string]interface{})
+			conf[key] = next
+			handle(next, keysLeft[1:], val)
+		}
+	}
+}
+
+func trimPrefix(key string) string {
+	p := fmt.Sprintf("%s%s", Prefix, Separator)
+	return strings.TrimPrefix(key, p)
+}
+
+func nameToKeys(key string) []string {
+	return strings.Split(strings.ToLower(key), Separator)
+}
+
+func getConfigKey(key string) string {
+	return strings.ToLower(key)
+}
+
+func getValueType(val string) interface{} {
+	val = strings.Trim(val, " ")
+	if strings.HasPrefix(val, "[") && strings.HasSuffix(val, "]") {
+		val = strings.ReplaceAll(val, "[", "")
+		val = strings.ReplaceAll(val, "]", "")
+		vals := strings.Split(val, ",")
+		var ret []interface{}
+		for _, v := range vals {
+			if i, err := strconv.ParseInt(v, 10, 64); err == nil {
+				ret = append(ret, i)
+			} else if b, err := strconv.ParseBool(v); err == nil {
+				ret = append(ret, b)
+			} else if f, err := strconv.ParseFloat(v, 64); err == nil {
+				ret = append(ret, f)
+			} else {
+				ret = append(ret, v)
+			}
+		}
+		return ret
+	} else if i, err := strconv.ParseInt(val, 10, 64); err == nil {
+		return i
+	} else if b, err := strconv.ParseBool(val); err == nil {
+		return b
+	} else if f, err := strconv.ParseFloat(val, 64); err == nil {
+		return f
+	}
+	return val
+}
+
+func normalize(m map[string]interface{}) map[string]interface{} {
+	res := make(map[string]interface{})
+	for k, v := range m {
+		lowered := strings.ToLower(k)
+		if casted, success := v.(map[string]interface{}); success {
+			node := normalize(casted)
+			res[lowered] = node
+		} else {
+			res[lowered] = v
+		}
+	}
+	return res
+}
+
+func applyKeys(m map[string]interface{}, list []string) {
+	for _, k := range list {
+		applyKey(m, k)
+	}
+}
+
+func applyKey(m map[string]interface{}, key string) {
+	for k, v := range m {
+		if casted, ok := v.(map[string]interface{}); ok {
+			applyKey(casted, key)
+		}
+		if key != k && strings.ToLower(key) == k {
+			m[key] = v
+			delete(m, k)
+		}
+	}
+}
+
+func extractKeysFromJsonIfExists(yamlPath string) ([]string, error) {
+	jsonFilePath := jsonPathForFile(yamlPath)
+	_, err := os.Stat(jsonFilePath)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return make([]string, 0), nil
+		} else {
+			return nil, err
+		}
+	}
+	m, err := loadJsonForYaml(jsonFilePath)
+	if err != nil {
+		return nil, err
+	}
+	return extractNamesFromProperties(m)
+}
+
+func loadJsonForYaml(filePath string) (map[string]interface{}, error) {
+	data, err := ioutil.ReadFile(filePath)
+	if err != nil {
+		return nil, err
+	}
+	m := make(map[string]interface{})
+	err = json.Unmarshal(data, &m)
+	if err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func jsonPathForFile(yamlPath string) string {
+	p := strings.TrimSuffix(yamlPath, filepath.Ext(yamlPath))
+	return fmt.Sprintf("%s.json", p)
+}
+
+func extractNamesFromProperties(jsonMap map[string]interface{}) ([]string, error) {
+	result := make([]string, 0)
+	properties, contains := jsonMap["properties"]
+	if !contains {
+		return nil, fmt.Errorf("json map does not have properties value")
+	}
+	if propertiesAsMap, success := properties.(map[string]interface{}); success {
+		list := propertiesAsMap["default"]
+		if interfaceList, isList := list.([]interface{}); isList {
+			for _, element := range interfaceList {
+				if m, isMap := element.(map[string]interface{}); isMap {
+					n := m["name"]
+					if s, isString := n.(string); isString {
+						result = append(result, s)
+					}
+				}
+			}
+		}
+	} else {
+		return nil, fmt.Errorf("failed to cast to list of properties")
+	}
+	return result, nil
+}

internal/conf/load_test.go

@@ -0,0 +1,122 @@
+// INTECH Process Automation Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package conf
+
+import (
+	"os"
+	"reflect"
+	"testing"
+)
+
+func TestEnv(t *testing.T) {
+
+	key := "KUIPER__BASIC__CONSOLELOG"
+	value := "true"
+
+	err := os.Setenv(key, value)
+	if err != nil {
+		t.Error(err)
+	}
+
+	c := KuiperConf{}
+	err = LoadConfig(&c)
+	if err != nil {
+		t.Error(err)
+	}
+
+	if c.Basic.ConsoleLog != true {
+		t.Errorf("env variable should set it to true")
+	}
+}
+
+func TestJsonCamelCase(t *testing.T) {
+	key := "KUIPER__DEFAULT__BODYTYPE"
+	value := "event"
+
+	err := os.Setenv(key, value)
+	if err != nil {
+		t.Error(err)
+	}
+
+	const ConfigName = "sources/httppull.yaml"
+	c := make(map[string]interface{})
+	err = LoadConfigByName(ConfigName, &c)
+	if err != nil {
+		t.Error(err)
+	}
+
+	if casted, success := c["default"].(map[string]interface{}); success {
+		if casted["bodyType"] != "json" {
+			t.Errorf("env variable should set it to true")
+		}
+	} else {
+		t.Errorf("returned value does not contains map under 'Basic' key")
+	}
+}
+
+func TestKeysReplacement(t *testing.T) {
+	input := createRandomConfigMap()
+	expected := createExpectedRandomConfigMap()
+	list := []string{"interval", "Seed", "deduplicate", "pattern"}
+
+	applyKeys(input, list)
+
+	if !reflect.DeepEqual(input, expected) {
+		t.Errorf("key names within list should be applied \nexpected - %s\n input   - %s", expected, input)
+	}
+}
+
+func TestKeyReplacement(t *testing.T) {
+	m := createRandomConfigMap()
+	expected := createExpectedRandomConfigMap()
+
+	applyKey(m, "Seed")
+	applyKey(m, "interval")
+
+	if !reflect.DeepEqual(m, expected) {
+		t.Errorf("key names within list should be applied \nexpected - %s\nmap      - %s", expected, m)
+	}
+}
+
+func createRandomConfigMap() map[string]interface{} {
+	pattern := make(map[string]interface{})
+	pattern["count"] = 50
+	defaultM := make(map[string]interface{})
+	defaultM["interval"] = 1000
+	defaultM["seed"] = 1
+	defaultM["pattern"] = pattern
+	defaultM["deduplicate"] = 0
+	ext := make(map[string]interface{})
+	ext["interval"] = 100
+	dedup := make(map[string]interface{})
+	dedup["interval"] = 100
+	dedup["deduplicated"] = 50
+	input := make(map[string]interface{})
+	input["default"] = defaultM
+	input["ext"] = ext
+	input["dedup"] = dedup
+	return input
+}
+
+func createExpectedRandomConfigMap() map[string]interface{} {
+	input := createRandomConfigMap()
+	def := input["default"]
+	if defMap, ok := def.(map[string]interface{}); ok {
+		tmp := defMap["seed"]
+		delete(defMap, "seed")
+		defMap["Seed"] = tmp
+	}
+	return input
+}

internal/topo/node/node.go

@@ -20,7 +20,6 @@ import (
 	"github.com/lf-edge/ekuiper/internal/topo/checkpoint"
 	"github.com/lf-edge/ekuiper/pkg/api"
 	"github.com/lf-edge/ekuiper/pkg/ast"
-	"gopkg.in/yaml.v3"
 	"strings"
 	"sync"
 )
@@ -178,32 +177,28 @@ func getSourceConf(ctx api.StreamContext, sourceType string, options *ast.Option
 	if sourceType == "mqtt" {
 		confPath = "mqtt_source.yaml"
 	}
-	conf, err := conf.LoadConf(confPath)
 	props := make(map[string]interface{})
-	if err == nil {
-		cfg := make(map[string]interface{})
-		if err := yaml.Unmarshal(conf, &cfg); err != nil {
-			logger.Warnf("fail to parse yaml for source %s. Return an empty configuration", sourceType)
+	cfg := make(map[string]interface{})
+	err := conf.LoadConfigByName(confPath, &cfg)
+	if err != nil {
+		logger.Warnf("fail to parse yaml for source %s. Return an empty configuration", sourceType)
+	} else {
+		def, ok := cfg["default"]
+		if !ok {
+			logger.Warnf("default conf is not found", confkey)
 		} else {
-			def, ok := cfg["default"]
-			if !ok {
-				logger.Warnf("default conf is not found", confkey)
-			} else {
-				if def1, ok1 := def.(map[string]interface{}); ok1 {
-					props = def1
-				}
-				if c, ok := cfg[confkey]; ok {
-					if c1, ok := c.(map[string]interface{}); ok {
-						c2 := c1
-						for k, v := range c2 {
-							props[k] = v
-						}
+			if def1, ok1 := def.(map[string]interface{}); ok1 {
+				props = def1
+			}
+			if c, ok := cfg[confkey]; ok {
+				if c1, ok := c.(map[string]interface{}); ok {
+					c2 := c1
+					for k, v := range c2 {
+						props[k] = v
 					}
 				}
 			}
 		}
-	} else {
-		logger.Warnf("config file %s.yaml is not loaded properly. Return an empty configuration", sourceType)
 	}
 	f := options.FORMAT
 	if f == "" {

internal/topo/source/mqtt_source.go

@@ -16,7 +16,6 @@ package source
 
 import (
 	"crypto/tls"
-	"encoding/json"
 	"fmt"
 	MQTT "github.com/eclipse/paho.mqtt.golang"
 	"github.com/google/uuid"
@@ -90,13 +89,10 @@ func (ms *MQTTSource) Configure(topic string, props map[string]interface{}) erro
 	ms.pkeyPath = cfg.PrivateKPath
 
 	if 0 != len(cfg.KubeedgeModelFile) {
-		conf, err := conf.LoadConf(path.Join("sources", cfg.KubeedgeModelFile))
-		if nil != err {
-			return err
-		}
+		p := path.Join("sources", cfg.KubeedgeModelFile)
 		ms.model = modelFactory(cfg.KubeedgeVersion)
-		if err = json.Unmarshal(conf, ms.model); err != nil {
-			ms.model = nil
+		err = conf.LoadConfigFromPath(p, ms.model)
+		if err != nil {
 			return err
 		}
 	}