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Allow running OpenTelemetry collector (#181)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| package infra | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "github.com/docker/docker/api/types" | ||
| "github.com/docker/docker/api/types/container" | ||
| "github.com/docker/docker/api/types/mount" | ||
| "github.com/docker/docker/api/types/network" | ||
| "github.com/moby/moby/client" | ||
| "os" | ||
| "path" | ||
| "path/filepath" | ||
| ) | ||
|
|
||
| // CollectorImageName is the default Docker image used | ||
| const CollectorImageName = "ghcr.io/open-telemetry/opentelemetry-collector-releases/opentelemetry-collector-contrib:latest" | ||
|
|
||
| const CollectorConfigPath = "/etc/otelcol-contrib/config.yaml" | ||
|
|
||
| const sslCertificates = "/etc/ssl/certs/ca-certificates.crt" | ||
|
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| type Collector struct { | ||
| cli *client.Client | ||
| containerID string | ||
| } | ||
|
|
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| // NewCollector starts the OpenTelemetry collector container. | ||
| func NewCollector(ctx context.Context, cli *client.Client, net *Networks, params *RunParams, proxy *Proxy) (*Collector, error) { | ||
| hostCfg := &container.HostConfig{ | ||
| AutoRemove: false, | ||
| } | ||
|
|
||
| containerCfg := &container.Config{ | ||
| Image: params.CollectorImage, | ||
| Env: []string{ | ||
| fmt.Sprintf("HTTP_PROXY=%s", proxy.url), | ||
| fmt.Sprintf("HTTPS_PROXY=%s", proxy.url), | ||
| }, | ||
| } | ||
|
|
||
| netCfg := &network.NetworkingConfig{ | ||
| EndpointsConfig: map[string]*network.EndpointSettings{ | ||
| net.noInternetName: { | ||
| NetworkID: net.NoInternet.ID, | ||
| }, | ||
| }, | ||
| } | ||
|
|
||
| if params.CollectorConfigPath != "" { | ||
| if !filepath.IsAbs(params.CollectorConfigPath) { | ||
| // needs to be absolute, assume it is relative to the working directory | ||
| var dir string | ||
| dir, err := os.Getwd() | ||
| if err != nil { | ||
| return nil, fmt.Errorf("couldn't get working directory: %w", err) | ||
| } | ||
| params.CollectorConfigPath = path.Join(dir, params.CollectorConfigPath) | ||
| } | ||
| hostCfg.Mounts = append(hostCfg.Mounts, mount.Mount{ | ||
| Type: mount.TypeBind, | ||
| Source: params.CollectorConfigPath, | ||
| Target: CollectorConfigPath, | ||
| ReadOnly: true, | ||
| }) | ||
| } | ||
|
|
||
| collectorContainer, err := cli.ContainerCreate(ctx, containerCfg, hostCfg, netCfg, nil, "") | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to create collector container: %w", err) | ||
| } | ||
|
|
||
| collector := &Collector{ | ||
| cli: cli, | ||
| containerID: collectorContainer.ID, | ||
| } | ||
|
|
||
| opt := types.CopyToContainerOptions{} | ||
| if t, err := tarball(sslCertificates, proxy.ca.Cert); err != nil { | ||
| return nil, fmt.Errorf("failed to create cert tarball: %w", err) | ||
| } else if err = cli.CopyToContainer(ctx, collector.containerID, "/", t, opt); err != nil { | ||
| return nil, fmt.Errorf("failed to copy cert to container: %w", err) | ||
| } | ||
|
|
||
| if err = cli.ContainerStart(ctx, collectorContainer.ID, types.ContainerStartOptions{}); err != nil { | ||
| collector.Close() | ||
| return nil, fmt.Errorf("failed to start collector container: %w", err) | ||
| } | ||
|
|
||
| return collector, nil | ||
|
|
||
| } | ||
|
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| // Close stops and removes the container. | ||
| func (c *Collector) Close() error { | ||
| timeout := 5 | ||
| _ = c.cli.ContainerStop(context.Background(), c.containerID, container.StopOptions{Timeout: &timeout}) | ||
|
|
||
| err := c.cli.ContainerRemove(context.Background(), c.containerID, types.ContainerRemoveOptions{Force: true}) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to remove collector container: %w", err) | ||
| } | ||
| return nil | ||
| } |
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