Ilia Denisov
86 lines
2.7 KiB
Go
86 lines
2.7 KiB
Go
package app
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import (
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"context"
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"errors"
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"fmt"
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"time"
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"galaxy/redisconn"
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"galaxy/rtmanager/internal/config"
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"galaxy/rtmanager/internal/telemetry"
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"github.com/docker/docker/client"
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"github.com/redis/go-redis/v9"
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)
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// newRedisClient builds the master Redis client from cfg via the shared
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// `pkg/redisconn` helper. Replica clients are not opened in this iteration
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// per ARCHITECTURE.md §Persistence Backends; they will be wired when read
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// routing is introduced.
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func newRedisClient(cfg config.RedisConfig) *redis.Client {
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return redisconn.NewMasterClient(cfg.Conn)
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}
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// instrumentRedisClient attaches the OpenTelemetry tracing and metrics
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// instrumentation to client when telemetryRuntime is available. The
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// actual instrumentation lives in `pkg/redisconn` so every Galaxy service
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// shares one surface.
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func instrumentRedisClient(redisClient *redis.Client, telemetryRuntime *telemetry.Runtime) error {
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if redisClient == nil {
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return errors.New("instrument redis client: nil client")
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}
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if telemetryRuntime == nil {
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return nil
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}
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return redisconn.Instrument(redisClient,
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redisconn.WithTracerProvider(telemetryRuntime.TracerProvider()),
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redisconn.WithMeterProvider(telemetryRuntime.MeterProvider()),
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)
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}
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// pingRedis performs a single Redis PING bounded by
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// cfg.Conn.OperationTimeout to confirm that the configured Redis endpoint
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// is reachable at startup.
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func pingRedis(ctx context.Context, cfg config.RedisConfig, redisClient *redis.Client) error {
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return redisconn.Ping(ctx, redisClient, cfg.Conn.OperationTimeout)
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}
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// newDockerClient constructs a Docker SDK client for cfg.Host with an
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// optional API version override. The bootstrap layer opens and pings
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// the client; the production Docker adapter wraps it for the service
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// layer.
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func newDockerClient(cfg config.DockerConfig) (*client.Client, error) {
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options := []client.Opt{client.WithHost(cfg.Host)}
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if cfg.APIVersion == "" {
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options = append(options, client.WithAPIVersionNegotiation())
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} else {
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options = append(options, client.WithVersion(cfg.APIVersion))
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}
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docker, err := client.NewClientWithOpts(options...)
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if err != nil {
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return nil, fmt.Errorf("new docker client: %w", err)
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}
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return docker, nil
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}
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// pingDocker bounds one Docker daemon ping under timeout and returns a
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// wrapped error so startup failures are easy to spot in service logs.
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func pingDocker(ctx context.Context, dockerClient *client.Client, timeout time.Duration) error {
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if dockerClient == nil {
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return errors.New("ping docker: nil client")
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}
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if timeout <= 0 {
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return errors.New("ping docker: timeout must be positive")
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}
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pingCtx, cancel := context.WithTimeout(ctx, timeout)
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defer cancel()
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if _, err := dockerClient.Ping(pingCtx); err != nil {
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return fmt.Errorf("ping docker: %w", err)
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}
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return nil
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}
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