[receiver/faroreceiver] Add Faro receiver logic to wireframe

.chloggen/faro-receiver-logic.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: faroreceiver
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Completes the implementation of the Faro receiver.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [19180]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

cmd/otelcontribcol/builder-config.yaml

@@ -168,6 +168,7 @@ receivers:
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/elasticsearchreceiver v0.125.0
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/envoyalsreceiver v0.125.0
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/expvarreceiver v0.125.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/faroreceiver v0.125.0
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/filelogreceiver v0.125.0
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/filestatsreceiver v0.125.0
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/flinkmetricsreceiver v0.125.0

receiver/faroreceiver/README.md

@@ -12,4 +12,30 @@
 [development]: https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/component-stability.md#development
 <!-- end autogenerated section -->
 
-TODO
+# Faro Receiver
+
+This receiver can receive telemetry data in [Faro format](https://github.com/grafana/faro) that adhere to the [Faro OpenAPI schema](https://github.com/grafana/faro/blob/main/spec/gen/faro.gen.yaml).
+
+## Receiver Configuration
+
+Faro follows the [confighttp] configuration, some examples are shown below
+
+
+### Example Configuration
+
+```yaml
+receivers:
+  faro:
+    endpoint: 'localhost:8081'
+```
+
+### Advanced Configuration
+```yaml
+receivers:
+  faro:
+    endpoint: 'localhost:8081'
+    cors:
+      allowed_origins: "*"
+```
+
+[confighttp]: https://github.com/open-telemetry/opentelemetry-collector/tree/main/config/confighttp#server-configuration

receiver/faroreceiver/config_test.go

@@ -0,0 +1,48 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package faroreceiver // import "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/faroreceiver"
+
+import (
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"go.opentelemetry.io/collector/config/confighttp"
+	"go.opentelemetry.io/collector/config/configtls"
+	"go.opentelemetry.io/collector/confmap/confmaptest"
+)
+
+func TestUnmarshalDefaultConfig(t *testing.T) {
+	cm, err := confmaptest.LoadConf(filepath.Join("testdata", "empty.yaml"))
+	require.NoError(t, err)
+	factory := NewFactory()
+	cfg := factory.CreateDefaultConfig()
+	require.NoError(t, cm.Unmarshal(&cfg))
+	assert.Equal(t, factory.CreateDefaultConfig(), cfg)
+}
+
+func TestUnmarshalConfig(t *testing.T) {
+	cm, err := confmaptest.LoadConf(filepath.Join("testdata", "config.yaml"))
+	require.NoError(t, err)
+	factory := NewFactory()
+	cfg := factory.CreateDefaultConfig()
+	require.NoError(t, cm.Unmarshal(&cfg))
+	assert.Equal(t,
+		&Config{
+			ServerConfig: confighttp.ServerConfig{
+				Endpoint: "localhost:8080",
+				TLSSetting: &configtls.ServerConfig{
+					Config: configtls.Config{
+						CertFile: "test.crt",
+						KeyFile:  "test.key",
+					},
+				},
+				CORS: &confighttp.CORSConfig{
+					AllowedOrigins: []string{"https://*.test.com", "https://test.com"},
+					MaxAge:         7200,
+				},
+			},
+		}, cfg)
+}

receiver/faroreceiver/factory.go

@@ -5,19 +5,37 @@ package faroreceiver // import "github.com/open-telemetry/opentelemetry-collecto
 
 import (
 	"context"
+	"fmt"
 
 	"go.opentelemetry.io/collector/component"
 	"go.opentelemetry.io/collector/config/confighttp"
 	"go.opentelemetry.io/collector/consumer"
 	"go.opentelemetry.io/collector/receiver"
 
+	"github.com/open-telemetry/opentelemetry-collector-contrib/internal/sharedcomponent"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/faroreceiver/internal/metadata"
 )
 
 const (
 	defaultFaroEndpoint = "localhost:8080"
 )
 
+// This is the map of already created Faro receivers for particular configurations.
+// We maintain this map because the receiver.Factory is asked trace and log receivers separately
+// when it gets createFaroReceiverTraces() and createFaroReceiverLogs() but they must not
+// create separate objects, they must use one faroReceiver object per configuration.
+// When the receiver is shutdown it should be removed from this map so the same configuration
+// can be recreated successfully.
+var receivers = sharedcomponent.NewSharedComponents()
+
+func createDefaultConfig() component.Config {
+	return &Config{
+		ServerConfig: confighttp.ServerConfig{
+			Endpoint: defaultFaroEndpoint,
+		},
+	}
+}
+
 func NewFactory() receiver.Factory {
 	return receiver.NewFactory(
 		metadata.Type,
@@ -26,30 +44,52 @@ func NewFactory() receiver.Factory {
 		receiver.WithLogs(createFaroReceiverLogs, metadata.LogsStability))
 }
 
-func createDefaultConfig() component.Config {
-	return &Config{
-		ServerConfig: confighttp.ServerConfig{
-			Endpoint: defaultFaroEndpoint,
-		},
+func newFaroReceiverFactory(fCfg *Config, set *receiver.Settings, err *error) func() component.Component {
+	return func() component.Component {
+		var rcv component.Component
+		rcv, *err = newFaroReceiver(fCfg, set)
+		return rcv
 	}
 }
 
 func createFaroReceiverTraces(
 	_ context.Context,
-	_ receiver.Settings,
-	conf component.Config,
-	consumer consumer.Traces,
+	set receiver.Settings,
+	cfg component.Config,
+	nextTraces consumer.Traces,
 ) (receiver.Traces, error) {
-	cfg := conf.(*Config)
-	return newTraceReceiverTraces(cfg, consumer), nil
+	fCfg, ok := cfg.(*Config)
+	if !ok {
+		return nil, fmt.Errorf("invalid configuration: %T", cfg)
+	}
+	var err error
+	receiver := receivers.GetOrAdd(fCfg, newFaroReceiverFactory(fCfg, &set, &err))
+	if err != nil {
+		return nil, err
+	}
+
+	receiver.Unwrap().(*faroReceiver).RegisterTracesConsumer(nextTraces)
+
+	return receiver, nil
 }
 
 func createFaroReceiverLogs(
 	_ context.Context,
-	_ receiver.Settings,
-	conf component.Config,
-	consumer consumer.Logs,
+	set receiver.Settings,
+	cfg component.Config,
+	nextLogs consumer.Logs,
 ) (receiver.Logs, error) {
-	cfg := conf.(*Config)
-	return newTraceReceiverLogs(cfg, consumer), nil
+	fCfg, ok := cfg.(*Config)
+	if !ok {
+		return nil, fmt.Errorf("invalid configuration: %T", cfg)
+	}
+	var err error
+	receiver := receivers.GetOrAdd(fCfg, newFaroReceiverFactory(fCfg, &set, &err))
+	if err != nil {
+		return nil, err
+	}
+
+	receiver.Unwrap().(*faroReceiver).RegisterLogsConsumer(nextLogs)
+
+	return receiver, nil
 }

receiver/faroreceiver/go.mod

@@ -3,32 +3,46 @@ module github.com/open-telemetry/opentelemetry-collector-contrib/receiver/farore
 go 1.23.3
 
 require (
+	github.com/grafana/faro/pkg/go v0.0.0-20250314155512-06a06da3b8bc
 	github.com/stretchr/testify v1.10.0
+	go.opentelemetry.io/collector/component/componentstatus v0.125.1-0.20250505155216-829157cef7bb
 	go.opentelemetry.io/collector/config/confighttp v0.125.1-0.20250505155216-829157cef7bb
 	go.opentelemetry.io/collector/consumer/consumertest v0.125.1-0.20250505155216-829157cef7bb
+	go.opentelemetry.io/collector/receiver/receiverhelper v0.125.1-0.20250505155216-829157cef7bb
 	go.opentelemetry.io/collector/receiver/receivertest v0.125.1-0.20250505155216-829157cef7bb
 	go.uber.org/goleak v1.3.0
 )
 
 require go.opentelemetry.io/collector/extension/extensionauth v1.31.1-0.20250505152726-56c7da210783 // indirect
 
 require (
+	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
+	github.com/bahlo/generic-list-go v0.2.0 // indirect
+	github.com/buger/jsonparser v1.1.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/foxboron/go-tpm-keyfiles v0.0.0-20250323135004-b31fac66206e // indirect
+	github.com/go-logfmt/logfmt v0.6.0 // indirect
 	github.com/go-viper/mapstructure/v2 v2.2.1 // indirect
 	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/google/go-tpm v0.9.3 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/hashicorp/go-version v1.7.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.9 // indirect
 	github.com/knadh/koanf/maps v0.1.2 // indirect
 	github.com/knadh/koanf/providers/confmap v1.0.0 // indirect
 	github.com/knadh/koanf/v2 v2.2.0 // indirect
+	github.com/mailru/easyjson v0.9.0 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/oapi-codegen/runtime v1.1.1 // indirect
+	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatautil v0.125.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/wk8/go-ordered-map/v2 v2.1.8 // indirect
+	github.com/zeebo/xxh3 v1.0.2 // indirect
 	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
 	go.opentelemetry.io/collector/config/configmiddleware v0.125.1-0.20250505155216-829157cef7bb // indirect
 	go.opentelemetry.io/collector/consumer/consumererror v0.125.1-0.20250505155216-829157cef7bb // indirect
@@ -55,6 +69,10 @@ require (
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/snappy v1.0.0 // indirect
 	github.com/klauspost/compress v1.18.0 // indirect
+	github.com/open-telemetry/opentelemetry-collector-contrib/internal/sharedcomponent v0.124.1
+	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/golden v0.125.0
+	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatatest v0.125.0
+	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/faro v0.124.1
 	github.com/pierrec/lz4/v4 v4.1.22 // indirect
 	github.com/rs/cors v1.11.1 // indirect
 	go.opentelemetry.io/collector/client v1.31.1-0.20250505152726-56c7da210783 // indirect
@@ -63,7 +81,7 @@ require (
 	go.opentelemetry.io/collector/config/configauth v0.125.1-0.20250505155216-829157cef7bb // indirect
 	go.opentelemetry.io/collector/config/configcompression v1.31.1-0.20250505152726-56c7da210783 // indirect
 	go.opentelemetry.io/collector/config/configopaque v1.31.1-0.20250505152726-56c7da210783 // indirect
-	go.opentelemetry.io/collector/config/configtls v1.31.1-0.20250505152726-56c7da210783 // indirect
+	go.opentelemetry.io/collector/config/configtls v1.31.1-0.20250505152726-56c7da210783
 	go.opentelemetry.io/collector/confmap v1.31.1-0.20250505152726-56c7da210783
 	go.opentelemetry.io/collector/consumer v1.31.1-0.20250505152726-56c7da210783
 	go.opentelemetry.io/collector/consumer/xconsumer v0.125.1-0.20250505155216-829157cef7bb // indirect
@@ -78,7 +96,17 @@ require (
 	golang.org/x/net v0.39.0 // indirect
 	golang.org/x/sys v0.32.0 // indirect
 	golang.org/x/text v0.24.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20250218202821-56aae31c358a // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250324211829-b45e905df463 // indirect
 	google.golang.org/grpc v1.72.0 // indirect
 	google.golang.org/protobuf v1.36.6 // indirect
 )
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatatest => ../../pkg/pdatatest
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/golden => ../../pkg/golden
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/sharedcomponent => ../../internal/sharedcomponent
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatautil => ../../pkg/pdatautil
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/faro => ../../pkg/translator/faro