Initial commit

.github/workflows/release.yaml

@@ -0,0 +1,13 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  release:
+    uses: jupiterone/.github/.github/workflows/provision_only_release.yml@v3
+    secrets:
+      NPM_TOKEN: ${{ secrets.NPM_AUTH_TOKEN }}
+      AUTO_GITHUB_PAT_TOKEN: ${{ secrets.AUTO_GITHUB_PAT_TOKEN }}

.github/workflows/test.yaml

@@ -0,0 +1,18 @@
+name: Go Test
+
+on: [pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: "1.21.3"
+      - name: Install dependencies
+        run: go get .
+      - name: Run tests
+        run: go test -v ./...

README.md

@@ -0,0 +1,50 @@
+# OpenTelemetry JSON Log Flattener 
+NewRelic doesn't support nested JSON attributes in OpenTelemetry logs. To help alleviate these issues, this processor will flatten JSON at the top level. It turns messages like this:
+```json
+{
+  "name": "Test User",
+  "address": {
+    "street": "First Ave",
+    "house": 1234
+  },
+  "occupants": [
+    "Test User",
+    "Test User 2",
+    "Test User 3"
+  ]
+}
+```
+into
+```json
+{
+  "name": "Test User",
+  "address.street": "First Ave",
+  "address.house": 1234,
+  "occupants": "[\"Test User\", \"Test User 2\", \"Test User 3\"]"
+}
+```
+
+
+## Using this processor
+To add this processor to your OpenTelemetry Collector, follow the instructions for building a collector here: https://opentelemetry.io/docs/collector/custom-collector/
+
+In your config, add the following:
+```yaml
+processors:
+  - github.com/JupiterOne/otel-jsonlogflattenerprocessor
+```
+
+In your collector config, add the following processor:
+```yaml
+receivers:
+  ...
+exporters:
+  ...
+processors:
+  - oteljsonlogflattenerprocessor
+pipelines:
+  logs:
+    receivers: [...]
+    processors: [oteljsonlogflattenerprocessor]
+    exporters: [...]
+```

config.go

@@ -0,0 +1,8 @@
+package oteljsonlogflattenerprocessor
+
+// Config is very basic and takes no options
+type Config struct{}
+
+func (cfg *Config) Validate() error {
+	return nil
+}

config_test.go

@@ -0,0 +1,13 @@
+package oteljsonlogflattenerprocessor
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestValidateConfig(t *testing.T) {
+	cfg := &Config{}
+	err := cfg.Validate()
+	require.NoError(t, err)
+}

doc.go

@@ -0,0 +1,3 @@
+//go:generate mdatagen metadata.yaml
+
+package oteljsonlogflattenerprocessor // import "github.com/jupiterone/oteljsonlogflattenerprocessor"

factory.go

@@ -0,0 +1,31 @@
+package oteljsonlogflattenerprocessor
+
+import (
+	"context"
+	"errors"
+
+	"github.com/jupiterone/oteljsonlogflattenerprocessor/internal/metadata"
+	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/consumer"
+	"go.opentelemetry.io/collector/processor"
+)
+
+func NewFactory() processor.Factory {
+	return processor.NewFactory(
+		metadata.Type,
+		createDefaultConfig,
+		processor.WithLogs(createLogsProcessor, metadata.LogsStability),
+	)
+}
+
+func createDefaultConfig() component.Config {
+	return &Config{}
+}
+
+func createLogsProcessor(_ context.Context, set processor.CreateSettings, cfg component.Config, nextConsumer consumer.Logs) (processor.Logs, error) {
+	pCfg, ok := cfg.(*Config)
+	if !ok {
+		return nil, errors.New("could not initialize logs transform processor")
+	}
+	return newProcessor(pCfg, nextConsumer, set.Logger)
+}

factory_test.go

@@ -0,0 +1,29 @@
+package oteljsonlogflattenerprocessor
+
+import (
+	"testing"
+
+	"github.com/jupiterone/oteljsonlogflattenerprocessor/internal/metadata"
+	"github.com/stretchr/testify/assert"
+	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/component/componenttest"
+)
+
+func TestFactoryType(t *testing.T) {
+	factory := NewFactory()
+	assert.Equal(t, factory.Type(), component.Type(metadata.Type))
+}
+
+func TestFactoryCreateDefaultConfig(t *testing.T) {
+	factory := NewFactory()
+	cfg := factory.CreateDefaultConfig()
+	assert.Equal(t, cfg, &Config{})
+	assert.NoError(t, componenttest.CheckConfigStruct(cfg))
+}
+
+func TestFactoryCreateProcessorEmpty(t *testing.T) {
+	factory := NewFactory()
+	cfg := factory.CreateDefaultConfig()
+	err := component.ValidateConfig(cfg)
+	assert.NoError(t, err)
+}

go.mod

@@ -0,0 +1,44 @@
+module github.com/jupiterone/oteljsonlogflattenerprocessor
+
+go 1.21.3
+
+require (
+	github.com/stretchr/testify v1.8.4
+	go.opentelemetry.io/collector/component v0.89.0
+	go.opentelemetry.io/collector/consumer v0.89.0
+	go.opentelemetry.io/collector/pdata v1.0.0-rcv0018
+	go.opentelemetry.io/collector/processor v0.89.0
+	go.uber.org/zap v1.26.0
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/hashicorp/go-version v1.6.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/knadh/koanf/maps v0.1.1 // indirect
+	github.com/knadh/koanf/providers/confmap v0.1.0 // indirect
+	github.com/knadh/koanf/v2 v2.0.1 // indirect
+	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/mitchellh/mapstructure v1.5.1-0.20220423185008-bf980b35cac4 // 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/pmezard/go-difflib v1.0.0 // indirect
+	go.opentelemetry.io/collector v0.89.0 // indirect
+	go.opentelemetry.io/collector/config/configtelemetry v0.89.0 // indirect
+	go.opentelemetry.io/collector/confmap v0.89.0 // indirect
+	go.opentelemetry.io/collector/featuregate v1.0.0-rcv0018 // indirect
+	go.opentelemetry.io/otel v1.20.0 // indirect
+	go.opentelemetry.io/otel/metric v1.20.0 // indirect
+	go.opentelemetry.io/otel/trace v1.20.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	golang.org/x/net v0.17.0 // indirect
+	golang.org/x/sys v0.14.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230822172742-b8732ec3820d // indirect
+	google.golang.org/grpc v1.59.0 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -0,0 +1,125 @@
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internal/errwrap/errwrap.go

@@ -0,0 +1,28 @@
+package errwrap
+
+import (
+	"errors"
+	"fmt"
+)
+
+type ErrWrap struct {
+	err  error
+	werr error
+}
+
+func NewErrWrap(err error, werr error) error {
+	return &ErrWrap{err, werr}
+}
+
+func (ew *ErrWrap) Error() string {
+	return fmt.Sprintf("%s: %s", ew.err, ew.werr)
+}
+
+func (ew *ErrWrap) Unwrap() error {
+	return ew.werr
+}
+
+func (ew *ErrWrap) Is(target error) bool {
+	return errors.Is(ew.err, target) ||
+		errors.Is(ew.werr, target)
+}

metadata.yaml

@@ -0,0 +1,9 @@
+type: jsonlogflattener
+
+status:
+  class: processor
+  stability:
+    alpha: [logs]
+  distributions: []
+  codeowners:
+    active: ["@JupiterOne/sre"]