1 files changed, 146 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/modules/redis/redis.go b/src/go/collectors/go.d.plugin/modules/redis/redis.go
new file mode 100644
index 000000000..11abf3afd
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/modules/redis/redis.go
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package redis
+
+import (
+	"context"
+	_ "embed"
+	"errors"
+	"sync"
+	"time"
+
+	"github.com/netdata/netdata/go/go.d.plugin/agent/module"
+	"github.com/netdata/netdata/go/go.d.plugin/pkg/metrics"
+	"github.com/netdata/netdata/go/go.d.plugin/pkg/tlscfg"
+	"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
+
+	"github.com/blang/semver/v4"
+	"github.com/go-redis/redis/v8"
+)
+
+//go:embed "config_schema.json"
+var configSchema string
+
+func init() {
+	module.Register("redis", module.Creator{
+		Create:          func() module.Module { return New() },
+		JobConfigSchema: configSchema,
+	})
+}
+
+func New() *Redis {
+	return &Redis{
+		Config: Config{
+			Address:     "redis://@localhost:6379",
+			Timeout:     web.Duration(time.Second),
+			PingSamples: 5,
+		},
+
+		addAOFChartsOnce:       &sync.Once{},
+		addReplSlaveChartsOnce: &sync.Once{},
+		pingSummary:            metrics.NewSummary(),
+		collectedCommands:      make(map[string]bool),
+		collectedDbs:           make(map[string]bool),
+	}
+}
+
+type Config struct {
+	tlscfg.TLSConfig `yaml:",inline" json:""`
+	UpdateEvery      int          `yaml:"update_every" json:"update_every"`
+	Address          string       `yaml:"address" json:"address"`
+	Timeout          web.Duration `yaml:"timeout" json:"timeout"`
+	Username         string       `yaml:"username" json:"username"`
+	Password         string       `yaml:"password" json:"password"`
+	PingSamples      int          `yaml:"ping_samples" json:"ping_samples"`
+}
+
+type (
+	Redis struct {
+		module.Base
+		Config `yaml:",inline" json:""`
+
+		charts                 *module.Charts
+		addAOFChartsOnce       *sync.Once
+		addReplSlaveChartsOnce *sync.Once
+
+		rdb redisClient
+
+		server            string
+		version           *semver.Version
+		pingSummary       metrics.Summary
+		collectedCommands map[string]bool
+		collectedDbs      map[string]bool
+	}
+	redisClient interface {
+		Info(ctx context.Context, section ...string) *redis.StringCmd
+		Ping(context.Context) *redis.StatusCmd
+		Close() error
+	}
+)
+
+func (r *Redis) Configuration() any {
+	return r.Config
+}
+
+func (r *Redis) Init() error {
+	err := r.validateConfig()
+	if err != nil {
+		r.Errorf("config validation: %v", err)
+		return err
+	}
+
+	rdb, err := r.initRedisClient()
+	if err != nil {
+		r.Errorf("init redis client: %v", err)
+		return err
+	}
+	r.rdb = rdb
+
+	charts, err := r.initCharts()
+	if err != nil {
+		r.Errorf("init charts: %v", err)
+		return err
+	}
+	r.charts = charts
+
+	return nil
+}
+
+func (r *Redis) Check() error {
+	mx, err := r.collect()
+	if err != nil {
+		r.Error(err)
+		return err
+	}
+	if len(mx) == 0 {
+		return errors.New("no metrics collected")
+	}
+	return nil
+}
+
+func (r *Redis) Charts() *module.Charts {
+	return r.charts
+}
+
+func (r *Redis) Collect() map[string]int64 {
+	ms, err := r.collect()
+	if err != nil {
+		r.Error(err)
+	}
+
+	if len(ms) == 0 {
+		return nil
+	}
+	return ms
+}
+
+func (r *Redis) Cleanup() {
+	if r.rdb == nil {
+		return
+	}
+	err := r.rdb.Close()
+	if err != nil {
+		r.Warningf("cleanup: error on closing redis client [%s]: %v", r.Address, err)
+	}
+	r.rdb = nil
+}