[receiver/huaweicloudces] add implementation (open-telemetry#36489)

Description
Adds initial implementation of huaweicloudces.

Link to tracking issue

open-telemetry#34953

Author: narcis96

receiver/huaweicloudcesreceiver/config.go

@@ -4,10 +4,25 @@
 package huaweicloudcesreceiver // import "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/huaweicloudcesreceiver"
 
 import (
+	"errors"
+	"fmt"
+	"slices"
+
+	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/ces/v1/model"
+	"go.opentelemetry.io/collector/component"
 	"go.opentelemetry.io/collector/config/confighttp"
 	"go.opentelemetry.io/collector/config/configopaque"
 	"go.opentelemetry.io/collector/config/configretry"
 	"go.opentelemetry.io/collector/receiver/scraperhelper"
+	"go.uber.org/multierr"
+)
+
+var (
+	// Predefined error responses for configuration validation failures
+	errInvalidCollectionInterval = errors.New(`invalid period; must be less than "collection_interval"`)
+	errMissingProjectID          = errors.New(`"project_id" is not specified in config`)
+	errMissingRegionID           = errors.New(`"region_id" is not specified in config`)
+	errInvalidProxy              = errors.New(`"proxy_address" must be specified if "proxy_user" or "proxy_password" is set"`)
 )
 
 // Config represent a configuration for the CloudWatch logs exporter.
@@ -63,3 +78,49 @@ type huaweiSessionConfig struct {
 	ProxyUser     string `mapstructure:"proxy_user"`
 	ProxyPassword string `mapstructure:"proxy_password"`
 }
+
+var _ component.Config = (*Config)(nil)
+
+// These valid periods are defined by CES API constraints: https://support.huaweicloud.com/intl/en-us/api-ces/ces_03_0034.html#section3
+var validPeriods = []int32{1, 300, 1200, 3600, 14400, 86400}
+
+// These valid filters are defined by CES API constraints: https://support.huaweicloud.com/intl/en-us/api-ces/ces_03_0034.html#section3
+var validFilters = map[string]model.ShowMetricDataRequestFilter{
+	"max":      model.GetShowMetricDataRequestFilterEnum().MAX,
+	"min":      model.GetShowMetricDataRequestFilterEnum().MIN,
+	"average":  model.GetShowMetricDataRequestFilterEnum().AVERAGE,
+	"sum":      model.GetShowMetricDataRequestFilterEnum().SUM,
+	"variance": model.GetShowMetricDataRequestFilterEnum().VARIANCE,
+}
+
+// Validate config
+func (config *Config) Validate() error {
+	var err error
+	if config.RegionID == "" {
+		err = multierr.Append(err, errMissingRegionID)
+	}
+
+	if config.ProjectID == "" {
+		err = multierr.Append(err, errMissingProjectID)
+	}
+	if index := slices.Index(validPeriods, config.Period); index == -1 {
+		err = multierr.Append(err, fmt.Errorf("invalid period: got %d; must be one of %v", config.Period, validPeriods))
+	}
+	if _, ok := validFilters[config.Filter]; !ok {
+		var validFiltersSlice []string
+		for key := range validFilters {
+			validFiltersSlice = append(validFiltersSlice, key)
+		}
+		err = multierr.Append(err, fmt.Errorf("invalid filter: got %s; must be one of %v", config.Filter, validFiltersSlice))
+	}
+	if config.Period >= int32(config.CollectionInterval.Seconds()) {
+		err = multierr.Append(err, errInvalidCollectionInterval)
+	}
+
+	// Validate that ProxyAddress is provided if ProxyUser or ProxyPassword is set
+	if (config.ProxyUser != "" || config.ProxyPassword != "") && config.ProxyAddress == "" {
+		err = multierr.Append(err, errInvalidProxy)
+	}
+
+	return err
+}

receiver/huaweicloudcesreceiver/factory.go

@@ -41,9 +41,9 @@ func createDefaultConfig() component.Config {
 
 func createMetricsReceiver(
 	_ context.Context,
-	_ receiver.Settings,
-	_ component.Config,
-	_ consumer.Metrics,
+	params receiver.Settings,
+	cfg component.Config,
+	next consumer.Metrics,
 ) (receiver.Metrics, error) {
-	return nil, nil
+	return newHuaweiCloudCesReceiver(params, cfg.(*Config), next), nil
 }

receiver/huaweicloudcesreceiver/factory_test.go

@@ -0,0 +1,43 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package huaweicloudcesreceiver
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/component/componenttest"
+	"go.opentelemetry.io/collector/consumer/consumertest"
+	"go.opentelemetry.io/collector/receiver/receivertest"
+)
+
+func TestNewFactory(t *testing.T) {
+	factory := NewFactory()
+	assert.NotNil(t, factory)
+	assert.Equal(t, component.MustNewType("huaweicloudcesreceiver"), factory.Type())
+}
+
+func TestCreateDefaultConfig(t *testing.T) {
+	factory := NewFactory()
+	config := factory.CreateDefaultConfig()
+	assert.NotNil(t, config)
+	assert.NoError(t, componenttest.CheckConfigStruct(config))
+}
+
+func TestCreateMetricsReceiver(t *testing.T) {
+	factory := NewFactory()
+	config := factory.CreateDefaultConfig()
+
+	rConfig := config.(*Config)
+	rConfig.CollectionInterval = 60 * time.Second
+	rConfig.InitialDelay = time.Second
+
+	nextConsumer := new(consumertest.MetricsSink)
+	receiver, err := factory.CreateMetrics(context.Background(), receivertest.NewNopSettings(), config, nextConsumer)
+	assert.NoError(t, err)
+	assert.NotNil(t, receiver)
+}

receiver/huaweicloudcesreceiver/generated_component_test.go

@@ -4,57 +4,86 @@ go 1.22.7
 
 require (
 	github.com/cenkalti/backoff/v4 v4.3.0
+	github.com/huaweicloud/huaweicloud-sdk-go-v3 v0.1.126
+	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/golden v0.115.0
+	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatatest v0.114.0
 	github.com/stretchr/testify v1.10.0
 	go.opentelemetry.io/collector/component v0.115.1-0.20241206185113-3f3e208e71b8
 	go.opentelemetry.io/collector/component/componenttest v0.115.1-0.20241206185113-3f3e208e71b8
 	go.opentelemetry.io/collector/config/confighttp v0.115.1-0.20241206185113-3f3e208e71b8
 	go.opentelemetry.io/collector/config/configopaque v1.21.1-0.20241206185113-3f3e208e71b8
 	go.opentelemetry.io/collector/config/configretry v1.21.1-0.20241206185113-3f3e208e71b8
+	go.opentelemetry.io/collector/confmap v1.21.1-0.20241206185113-3f3e208e71b8
 	go.opentelemetry.io/collector/consumer v1.21.1-0.20241206185113-3f3e208e71b8
+	go.opentelemetry.io/collector/consumer/consumertest v0.115.1-0.20241206185113-3f3e208e71b8
+	go.opentelemetry.io/collector/pdata v1.21.1-0.20241206185113-3f3e208e71b8
 	go.opentelemetry.io/collector/receiver v0.115.1-0.20241206185113-3f3e208e71b8
+	go.opentelemetry.io/collector/receiver/receivertest v0.115.0
 	go.uber.org/goleak v1.3.0
+	go.uber.org/multierr v1.11.0
+	go.uber.org/zap v1.27.0
 )
 
 require (
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/fsnotify/fsnotify v1.8.0 // indirect
 	github.com/go-logr/logr v1.4.2 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-viper/mapstructure/v2 v2.2.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/compress v1.17.11 // 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 v2.1.2 // 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/open-telemetry/opentelemetry-collector-contrib/pkg/pdatautil v0.115.0 // indirect
 	github.com/pierrec/lz4/v4 v4.1.21 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/rs/cors v1.11.1 // indirect
+	github.com/stretchr/objx v0.5.2 // indirect
+	github.com/tjfoc/gmsm v1.4.1 // indirect
+	go.mongodb.org/mongo-driver v1.17.1 // indirect
 	go.opentelemetry.io/collector/client v1.21.1-0.20241206185113-3f3e208e71b8 // indirect
 	go.opentelemetry.io/collector/config/configauth v0.115.1-0.20241206185113-3f3e208e71b8 // indirect
 	go.opentelemetry.io/collector/config/configcompression v1.21.1-0.20241206185113-3f3e208e71b8 // indirect
 	go.opentelemetry.io/collector/config/configtelemetry v0.115.1-0.20241206185113-3f3e208e71b8 // indirect
 	go.opentelemetry.io/collector/config/configtls v1.21.1-0.20241206185113-3f3e208e71b8 // indirect
 	go.opentelemetry.io/collector/config/internal v0.115.1-0.20241206185113-3f3e208e71b8 // indirect
+	go.opentelemetry.io/collector/consumer/consumererror v0.115.0 // indirect
+	go.opentelemetry.io/collector/consumer/consumerprofiles v0.115.1-0.20241206185113-3f3e208e71b8 // indirect
 	go.opentelemetry.io/collector/extension v0.115.1-0.20241206185113-3f3e208e71b8 // indirect
 	go.opentelemetry.io/collector/extension/auth v0.115.1-0.20241206185113-3f3e208e71b8 // indirect
-	go.opentelemetry.io/collector/pdata v1.21.1-0.20241206185113-3f3e208e71b8 // indirect
+	go.opentelemetry.io/collector/pdata/pprofile v0.115.1-0.20241206185113-3f3e208e71b8 // indirect
 	go.opentelemetry.io/collector/pipeline v0.115.1-0.20241206185113-3f3e208e71b8 // indirect
+	go.opentelemetry.io/collector/receiver/receiverprofiles v0.115.1-0.20241206185113-3f3e208e71b8 // indirect
 	go.opentelemetry.io/collector/scraper v0.115.1-0.20241206185113-3f3e208e71b8 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.57.0 // indirect
 	go.opentelemetry.io/otel v1.32.0 // indirect
 	go.opentelemetry.io/otel/metric v1.32.0 // indirect
 	go.opentelemetry.io/otel/sdk v1.32.0 // indirect
 	go.opentelemetry.io/otel/sdk/metric v1.32.0 // indirect
 	go.opentelemetry.io/otel/trace v1.32.0 // indirect
-	go.uber.org/multierr v1.11.0 // indirect
-	go.uber.org/zap v1.27.0 // indirect
-	golang.org/x/net v0.31.0 // indirect
-	golang.org/x/sys v0.27.0 // indirect
-	golang.org/x/text v0.20.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20241118233622-e639e219e697 // indirect
-	google.golang.org/grpc v1.68.0 // indirect
+	golang.org/x/crypto v0.30.0 // indirect
+	golang.org/x/net v0.32.0 // indirect
+	golang.org/x/sys v0.28.0 // indirect
+	golang.org/x/text v0.21.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20241209162323-e6fa225c2576 // indirect
+	google.golang.org/grpc v1.68.1 // indirect
 	google.golang.org/protobuf v1.35.2 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatautil => ../../pkg/pdatautil
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatatest => ../../pkg/pdatatest
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/golden => ../../pkg/golden