feat: use postgres

gateway/internal/redisclient/client.go

@@ -0,0 +1,55 @@
+// Package redisclient provides the Redis client helpers used by Gateway
+// runtime wiring. The helpers wrap `pkg/redisconn` so the runtime keeps the
+// same construction surface as the other Galaxy services.
+package redisclient
+
+import (
+	"context"
+	"fmt"
+
+	"galaxy/gateway/internal/telemetry"
+	"galaxy/redisconn"
+
+	"github.com/redis/go-redis/v9"
+)
+
+// NewClient constructs one Redis client from cfg using the shared
+// `pkg/redisconn` helper, which enforces the master/replica/password env-var
+// shape.
+func NewClient(cfg redisconn.Config) *redis.Client {
+	return redisconn.NewMasterClient(cfg)
+}
+
+// InstrumentClient attaches Redis tracing and metrics exporters to client
+// when telemetryRuntime is available.
+func InstrumentClient(client *redis.Client, telemetryRuntime *telemetry.Runtime) error {
+	if client == nil {
+		return fmt.Errorf("instrument redis client: nil client")
+	}
+	if telemetryRuntime == nil {
+		return nil
+	}
+
+	return redisconn.Instrument(
+		client,
+		redisconn.WithTracerProvider(telemetryRuntime.TracerProvider()),
+		redisconn.WithMeterProvider(telemetryRuntime.MeterProvider()),
+	)
+}
+
+// Ping performs the startup Redis connectivity check bounded by
+// cfg.OperationTimeout.
+func Ping(ctx context.Context, cfg redisconn.Config, client *redis.Client) error {
+	if client == nil {
+		return fmt.Errorf("ping redis: nil client")
+	}
+
+	pingCtx, cancel := context.WithTimeout(ctx, cfg.OperationTimeout)
+	defer cancel()
+
+	if err := client.Ping(pingCtx).Err(); err != nil {
+		return fmt.Errorf("ping redis: %w", err)
+	}
+
+	return nil
+}