feat(exporter/discordexporter): add discordexporter (#24)

Fixes #16

exporter/discordexporter/config.go

@@ -0,0 +1,45 @@
+// Copyright 2023 Yoshi Yamaguchi
+//
+// 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 discordexporter
+
+import (
+	"errors"
+
+	"go.opentelemetry.io/collector/component"
+)
+
+type Config struct {
+	// Token is Discord application token.
+	Token string `mapstructure:"token"`
+
+	// Channel is the target Discord channel to write data to.
+	Channel string `mapstructure:"channel"`
+}
+
+var _ component.Config = (*Config)(nil)
+
+func createDeafultConfig() component.Config {
+	return &Config{}
+}
+
+func (c *Config) Validate() error {
+	if c.Token == "" {
+		return errors.New("token must be non-empty")
+	}
+	if c.Channel == "" {
+		return errors.New("channel must be non-empty")
+	}
+	return nil
+}

exporter/discordexporter/exporter.go

@@ -0,0 +1,57 @@
+// Copyright 2023 Yoshi Yamaguchi
+//
+// 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 discordexporter
+
+import (
+	"context"
+
+	"go.opentelemetry.io/collector/pdata/pmetric"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+type discordExporter struct {
+	config    *Config
+	session   *discordgo.Session
+	marshaler pmetric.JSONMarshaler
+}
+
+func newDiscordExporter(cfg *Config) (*discordExporter, error) {
+	s, err := discordgo.New("Bot " + cfg.Token)
+	if err != nil {
+		return nil, err
+	}
+	return &discordExporter{
+		session: s,
+		config:  cfg,
+	}, nil
+}
+
+func (d *discordExporter) Shutdown(context.Context) error {
+	return d.session.Close()
+}
+
+func (d *discordExporter) pushMetrics(_ context.Context, md pmetric.Metrics) error {
+	buf, err := d.marshaler.MarshalMetrics(md)
+	if err != nil {
+		return err
+	}
+
+	_, err = d.session.ChannelMessageSend(d.config.Channel, string(buf))
+	if err != nil {
+		return err
+	}
+	return nil
+}

exporter/discordexporter/facgory.go

@@ -0,0 +1,54 @@
+// Copyright 2023 Yoshi Yamaguchi
+//
+// 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 discordexporter
+
+import (
+	"context"
+
+	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/consumer"
+	"go.opentelemetry.io/collector/exporter"
+	"go.opentelemetry.io/collector/exporter/exporterhelper"
+
+	metadata "github.com/ymotongpoo/opentelemetry-collector-extra/exporter/discordexporter/internal/metadata"
+)
+
+func NewFactory() exporter.Factory {
+	return exporter.NewFactory(
+		metadata.Type,
+		createDeafultConfig,
+		exporter.WithMetrics(createMetricsExporter, metadata.MetricsStability),
+	)
+}
+
+func createMetricsExporter(
+	ctx context.Context,
+	param exporter.CreateSettings,
+	cfg component.Config,
+) (exporter.Metrics, error) {
+	c := cfg.(*Config)
+	de, err := newDiscordExporter(c)
+	if err != nil {
+		return nil, err
+	}
+	return exporterhelper.NewMetricsExporter(
+		ctx,
+		param,
+		cfg,
+		de.pushMetrics,
+		exporterhelper.WithShutdown(de.Shutdown),
+		exporterhelper.WithCapabilities(consumer.Capabilities{MutatesData: false}),
+	)
+}

exporter/discordexporter/go.mod

@@ -0,0 +1,46 @@
+module github.com/ymotongpoo/opentelemetry-collector-extra/receiver/discordreceiver
+
+go 1.21.4
+
+require (
+	github.com/bwmarrin/discordgo v0.27.1
+	go.opentelemetry.io/collector/component v0.89.0
+	go.opentelemetry.io/collector/consumer v0.89.0
+	go.opentelemetry.io/collector/exporter v0.89.0
+)
+
+require (
+	github.com/cenkalti/backoff/v4 v4.2.1 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/gorilla/websocket v1.4.2 // 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
+	go.opencensus.io v0.24.0 // 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/extension v0.89.0 // indirect
+	go.opentelemetry.io/collector/featuregate v1.0.0-rcv0018 // indirect
+	go.opentelemetry.io/collector/pdata 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
+	go.uber.org/zap v1.26.0 // indirect
+	golang.org/x/crypto v0.14.0 // 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
+)