mirror of https://github.com/hashicorp/consul
100 lines
2.7 KiB
Go
100 lines
2.7 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package hcp
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import (
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"context"
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"fmt"
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"time"
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"github.com/armon/go-metrics"
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hcpclient "github.com/hashicorp/consul/agent/hcp/client"
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"github.com/hashicorp/consul/agent/hcp/config"
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"github.com/hashicorp/consul/agent/hcp/scada"
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"github.com/hashicorp/consul/agent/hcp/telemetry"
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"github.com/hashicorp/go-hclog"
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)
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// Deps contains the interfaces that the rest of Consul core depends on for HCP integration.
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type Deps struct {
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Client hcpclient.Client
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Provider scada.Provider
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Sink metrics.MetricSink
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}
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func NewDeps(cfg config.CloudConfig, logger hclog.Logger) (Deps, error) {
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ctx := context.Background()
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ctx = hclog.WithContext(ctx, logger)
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client, err := hcpclient.NewClient(cfg)
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if err != nil {
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return Deps{}, fmt.Errorf("failed to init client: %w", err)
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}
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provider, err := scada.New(cfg, logger.Named("scada"))
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if err != nil {
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return Deps{}, fmt.Errorf("failed to init scada: %w", err)
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}
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metricsClient, err := hcpclient.NewMetricsClient(ctx, &cfg)
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if err != nil {
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logger.Error("failed to init metrics client", "error", err)
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return Deps{}, fmt.Errorf("failed to init metrics client: %w", err)
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}
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sink, err := sink(ctx, client, metricsClient)
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if err != nil {
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// Do not prevent server start if sink init fails, only log error.
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logger.Error("failed to init sink", "error", err)
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}
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return Deps{
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Client: client,
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Provider: provider,
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Sink: sink,
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}, nil
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}
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// sink initializes an OTELSink which forwards Consul metrics to HCP.
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// The sink is only initialized if the server is registered with the management plane (CCM).
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// This step should not block server initialization, errors are returned, only to be logged.
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func sink(
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ctx context.Context,
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hcpClient hcpclient.Client,
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metricsClient telemetry.MetricsClient,
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) (metrics.MetricSink, error) {
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logger := hclog.FromContext(ctx).Named("sink")
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reqCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
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defer cancel()
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telemetryCfg, err := hcpClient.FetchTelemetryConfig(reqCtx)
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if err != nil {
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return nil, fmt.Errorf("failed to fetch telemetry config: %w", err)
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}
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if !telemetryCfg.MetricsEnabled() {
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return nil, nil
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}
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cfgProvider, err := NewHCPProvider(ctx, hcpClient, telemetryCfg)
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if err != nil {
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return nil, fmt.Errorf("failed to init config provider: %w", err)
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}
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reader := telemetry.NewOTELReader(metricsClient, cfgProvider, telemetry.DefaultExportInterval)
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sinkOpts := &telemetry.OTELSinkOpts{
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Reader: reader,
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ConfigProvider: cfgProvider,
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}
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sink, err := telemetry.NewOTELSink(ctx, sinkOpts)
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if err != nil {
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return nil, fmt.Errorf("failed create OTELSink: %w", err)
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}
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logger.Debug("initialized HCP metrics sink")
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return sink, nil
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}
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