feat: improve configuration

benchmark/bench_test.go

@@ -137,7 +137,7 @@ func BenchmarkStressForBasicFuncWithMemoryQueue(b *testing.B) {
 			Output:   outputTopic,
 			Replicas: replicas,
 		},
-		QueueBuilder: func(ctx context.Context, c *common.Config) (contube.TubeFactory, error) {
+		QueueBuilder: func(ctx context.Context) (contube.TubeFactory, error) {
 			return memoryQueueFactory, nil
 		},
 	}

cmd/server/cmd.go

@@ -33,9 +33,37 @@ var (
 	}
 )
 
+type flags struct {
+	configFile        string
+	loadConfigFromEnv bool
+}
+
+var (
+	config = flags{}
+)
+
+func init() {
+	Cmd.Flags().StringVarP(&config.configFile, "config-file", "c", "conf/function-stream.yaml",
+		"path to the config file (default is conf/function-stream.yaml)")
+	Cmd.Flags().BoolVarP(&config.loadConfigFromEnv, "load-config-from-env", "e", false, "load config from env (default is false)")
+}
+
 func exec(*cobra.Command, []string) {
 	common.RunProcess(func() (io.Closer, error) {
-		s, err := server.NewServer()
+		var c *server.Config
+		var err error
+		if config.loadConfigFromEnv {
+			c, err = server.LoadConfigFromEnv()
+			if err != nil {
+				return nil, err
+			}
+		} else {
+			c, err = server.LoadConfigFromFile(config.configFile)
+			if err != nil {
+				return nil, err
+			}
+		}
+		s, err := server.NewServer(server.WithConfig(c))
 		if err != nil {
 			return nil, err
 		}

cmd/standalone/cmd.go

@@ -35,7 +35,11 @@ var (
 
 func exec(*cobra.Command, []string) {
 	common.RunProcess(func() (io.Closer, error) {
-		s, err := server.NewServerWithConfig(server.LoadStandaloneConfigFromEnv())
+		config, err := server.LoadConfigFromFile("conf/standalone.yaml")
+		if err != nil {
+			return nil, err
+		}
+		s, err := server.NewServer(server.WithConfig(config))
 		if err != nil {
 			return nil, err
 		}

common/config.go

@@ -16,9 +16,18 @@
 
 package common
 
-// Config is a struct that holds the configuration for a function stream.
-type Config struct {
-	ListenAddr string // ListenAddr is the address that the function stream REST service will listen on.
-	PulsarURL  string // PulsarURL is the URL of the Pulsar service. It's used for the pulsar_tube
-	TubeType   string
+type ConfigMap map[string]interface{}
+
+// MergeConfig merges multiple ConfigMap into one
+func MergeConfig(configs ...*ConfigMap) *ConfigMap {
+	result := ConfigMap{}
+	for _, config := range configs {
+		if config == nil {
+			continue
+		}
+		for k, v := range *config {
+			result[k] = v
+		}
+	}
+	return &result
 }

conf/function-stream.yaml

@@ -0,0 +1,29 @@
+# Copyright 2024 Function Stream Org.
+#
+# 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.
+
+listen_addr: ":7300"
+tube_factory:
+  pulsar:
+    type: "pulsar"
+    config:
+      pulsar_url: "pulsar://localhost:6650"
+  memory:
+    Type: "memory"
+  default:
+    ref: "pulsar"
+runtime_factory:
+  wasm:
+    type: "wasm"
+  default:
+    ref: "wasm"

conf/standalone.yaml

@@ -0,0 +1,25 @@
+# Copyright 2024 Function Stream Org.
+#
+# 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.
+
+listen_addr: ":7300"
+tube_factory:
+  memory:
+    Type: "memory"
+  default:
+    ref: "memory"
+runtime_factory:
+  wasm:
+    type: "wasm"
+  default:
+    ref: "wasm"

fs/contube/pulsar.go

@@ -25,19 +25,21 @@ import (
 )
 
 const (
-	PulsarURLKey = "pulsarURL"
+	PulsarURLKey = "pulsar_url"
 )
 
 type PulsarTubeFactoryConfig struct {
 	PulsarURL string
 }
 
-func NewPulsarTubeFactoryConfig(configMap ConfigMap) *PulsarTubeFactoryConfig {
+func NewPulsarTubeFactoryConfig(configMap ConfigMap) (*PulsarTubeFactoryConfig, error) {
 	var result PulsarTubeFactoryConfig
 	if pulsarURL, ok := configMap[PulsarURLKey].(string); ok {
 		result.PulsarURL = pulsarURL
+	} else {
+		return nil, errors.Errorf("Missing required field %s", PulsarURLKey)
 	}
-	return &result
+	return &result, nil
 }
 
 func (c *PulsarTubeFactoryConfig) ToConfigMap() ConfigMap {
@@ -62,7 +64,10 @@ func (f *PulsarEventQueueFactory) NewSinkTube(ctx context.Context, configMap Con
 }
 
 func NewPulsarEventQueueFactory(ctx context.Context, configMap ConfigMap) (TubeFactory, error) {
-	config := NewPulsarTubeFactoryConfig(configMap)
+	config, err := NewPulsarTubeFactoryConfig(configMap)
+	if err != nil {
+		return nil, err
+	}
 	pc, err := pulsar.NewClient(pulsar.ClientOptions{
 		URL: config.PulsarURL,
 	})

go.mod

@@ -35,9 +35,11 @@ require (
 	github.com/cockroachdb/redact v1.1.5 // indirect
 	github.com/cockroachdb/tokenbucket v0.0.0-20230807174530-cc333fc44b06 // indirect
 	github.com/danieljoos/wincred v1.2.1 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/deckarep/golang-set/v2 v2.6.0 // indirect
 	github.com/dvsekhvalnov/jose2go v1.6.0 // indirect
 	github.com/frankban/quicktest v1.14.6 // indirect
+	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/getsentry/sentry-go v0.27.0 // indirect
 	github.com/go-logr/logr v1.4.1 // indirect
 	github.com/go-openapi/jsonpointer v0.21.0 // indirect
@@ -53,28 +55,40 @@ require (
 	github.com/gsterjov/go-libsecret v0.0.0-20161001094733-a6f4afe4910c // indirect
 	github.com/hashicorp/errwrap v1.0.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/compress v1.17.7 // indirect
 	github.com/kr/pretty v0.3.1 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/linkedin/goavro/v2 v2.12.0 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/mtibben/percent v0.2.1 // indirect
+	github.com/pelletier/go-toml/v2 v2.1.0 // indirect
 	github.com/pierrec/lz4 v2.6.1+incompatible // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/prometheus/client_golang v1.19.0 // indirect
 	github.com/prometheus/client_model v0.6.0 // indirect
 	github.com/prometheus/common v0.48.0 // indirect
 	github.com/prometheus/procfs v0.12.0 // indirect
 	github.com/rogpeppe/go-internal v1.12.0 // indirect
+	github.com/sagikazarmark/locafero v0.4.0 // indirect
+	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
 	github.com/spaolacci/murmur3 v1.1.0 // indirect
+	github.com/spf13/afero v1.11.0 // indirect
+	github.com/spf13/cast v1.6.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/viper v1.18.2 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
 	go.uber.org/atomic v1.11.0 // indirect
+	go.uber.org/multierr v1.9.0 // indirect
 	golang.org/x/crypto v0.21.0 // indirect
 	golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 // indirect
 	golang.org/x/mod v0.15.0 // indirect
@@ -85,6 +99,7 @@ require (
 	google.golang.org/appengine v1.6.8 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240213162025-012b6fc9bca9 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/square/go-jose.v2 v2.6.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	k8s.io/apimachinery v0.29.1 // indirect

go.sum

@@ -39,6 +39,10 @@ github.com/danieljoos/wincred v1.2.1/go.mod h1:uGaFL9fDn3OLTvzCGulzE+SzjEe5NGlh5
 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/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/deckarep/golang-set/v2 v2.6.0 h1:XfcQbWM1LlMB8BsJ8N9vW5ehnnPVIw0je80NsVHagjM=
+github.com/deckarep/golang-set/v2 v2.6.0/go.mod h1:VAky9rY/yGXJOLEDv3OMci+7wtDpOF4IN+y82NBOac4=
 github.com/dimfeld/httptreemux v5.0.1+incompatible h1:Qj3gVcDNoOthBAqftuD596rm4wg/adLLz5xh5CmpiCA=
 github.com/dimfeld/httptreemux v5.0.1+incompatible/go.mod h1:rbUlSV+CCpv/SuqUTP/8Bk2O3LyUV436/yaRGkhP6Z0=
 github.com/dvsekhvalnov/jose2go v1.6.0 h1:Y9gnSnP4qEI0+/uQkHvFXeD2PLPJeXEL+ySMEA2EjTY=
@@ -55,6 +59,8 @@ github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHk
 github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
+github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
+github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
 github.com/getsentry/sentry-go v0.27.0 h1:Pv98CIbtB3LkMWmXi4Joa5OOcwbmnX88sF5qbK3r3Ps=
 github.com/getsentry/sentry-go v0.27.0/go.mod h1:lc76E2QywIyW8WuBnwl8Lc4bkmQH4+w1gwTf25trprY=
 github.com/go-errors/errors v1.4.2 h1:J6MZopCL4uSllY1OfXM374weqZFFItUbrImctkmUxIA=
@@ -109,6 +115,8 @@ github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/U
 github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
 github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo=
 github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=
+github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
+github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
@@ -128,11 +136,15 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/linkedin/goavro/v2 v2.12.0 h1:rIQQSj8jdAUlKQh6DttK8wCRv4t4QO09g1C4aBWXslg=
 github.com/linkedin/goavro/v2 v2.12.0/go.mod h1:KXx+erlq+RPlGSPmLF7xGo6SAbh8sCQ53x064+ioxhk=
+github.com/magiconair/properties v1.8.7 h1:IeQXZAiQcpL9mgcAe1Nu6cX9LLw6ExEHKjN0VQdvPDY=
+github.com/magiconair/properties v1.8.7/go.mod h1:Dhd985XPs7jluiymwWYZ0G4Z61jb3vdS329zhj2hYo0=
 github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.7.6/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
 github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
+github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
+github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@@ -147,6 +159,8 @@ github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=
 github.com/onsi/ginkgo v1.16.5/go.mod h1:+E8gABHa3K6zRBolWtd+ROzc/U5bkGt0FwiG042wbpU=
 github.com/onsi/gomega v1.29.0 h1:KIA/t2t5UBzoirT4H9tsML45GEbo3ouUnBHsCfD2tVg=
 github.com/onsi/gomega v1.29.0/go.mod h1:9sxs+SwGrKI0+PWe4Fxa9tFQQBG5xSsSbMXOI8PPpoQ=
+github.com/pelletier/go-toml/v2 v2.1.0 h1:FnwAJ4oYMvbT/34k9zzHuZNrhlz48GB3/s6at6/MHO4=
+github.com/pelletier/go-toml/v2 v2.1.0/go.mod h1:tJU2Z3ZkXwnxa4DPO899bsyIoywizdUvyaeZurnPPDc=
 github.com/pierrec/lz4 v2.6.1+incompatible h1:9UY3+iC23yxF0UfGaYrGplQ+79Rg+h/q9FV9ix19jjM=
 github.com/pierrec/lz4 v2.6.1+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
 github.com/pingcap/errors v0.11.4 h1:lFuQV/oaUMGcD2tqt+01ROSmJs75VG1ToEOkZIZ4nE4=
@@ -156,6 +170,8 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
+github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v1.19.0 h1:ygXvpU1AoN1MhdzckN+PyD9QJOSD4x7kmXYlnfbA6JU=
 github.com/prometheus/client_golang v1.19.0/go.mod h1:ZRM9uEAypZakd+q/x7+gmsvXdURP+DABIEIjnmDdp+k=
 github.com/prometheus/client_model v0.6.0 h1:k1v3CzpSRUTrKMppY35TLwPvxHqBu0bYgxZzqGIgaos=
@@ -168,32 +184,51 @@ github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/f
 github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8=
 github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/sagikazarmark/locafero v0.4.0 h1:HApY1R9zGo4DBgr7dqsTH/JJxLTTsOt7u6keLGt6kNQ=
+github.com/sagikazarmark/locafero v0.4.0/go.mod h1:Pe1W6UlPYUk/+wc/6KFhbORCfqzgYEpgQ3O5fPuL3H4=
+github.com/sagikazarmark/slog-shim v0.1.0 h1:diDBnUNK9N/354PgrxMywXnAwEr1QZcOr6gto+ugjYE=
+github.com/sagikazarmark/slog-shim v0.1.0/go.mod h1:SrcSrq8aKtyuqEI1uvTDTK1arOWRIczQRv+GVI1AkeQ=
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
 github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
+github.com/sourcegraph/conc v0.3.0 h1:OQTbbt6P72L20UqAkXXuLOj79LfEanQ+YQFNpLA9ySo=
+github.com/sourcegraph/conc v0.3.0/go.mod h1:Sdozi7LEKbFPqYX2/J+iBAM6HpqSLTASQIKqDmF7Mt0=
 github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
 github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
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