693 lines
19 KiB
Go
Executable File
693 lines
19 KiB
Go
Executable File
package redis
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import (
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"context"
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"fmt"
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"reflect"
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"strings"
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"time"
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redis "github.com/redis/go-redis/v9"
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"go.unistack.org/micro/v3/semconv"
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"go.unistack.org/micro/v3/store"
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pool "go.unistack.org/micro/v3/util/xpool"
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)
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var (
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DefaultPathSeparator = "/"
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DefaultClusterOptions = &redis.ClusterOptions{
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Username: "",
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Password: "", // no password set
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MaxRetries: 2,
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MaxRetryBackoff: 256 * time.Millisecond,
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DialTimeout: 1 * time.Second,
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ReadTimeout: 1 * time.Second,
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WriteTimeout: 1 * time.Second,
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PoolTimeout: 1 * time.Second,
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MinIdleConns: 10,
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}
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DefaultOptions = &redis.Options{
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Username: "",
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Password: "", // no password set
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DB: 0, // use default DB
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MaxRetries: 2,
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MaxRetryBackoff: 256 * time.Millisecond,
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DialTimeout: 1 * time.Second,
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ReadTimeout: 1 * time.Second,
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WriteTimeout: 1 * time.Second,
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PoolTimeout: 1 * time.Second,
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MinIdleConns: 10,
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}
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)
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type Store struct {
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opts store.Options
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cli *wrappedClient
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done chan struct{}
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pool pool.Pool[*strings.Builder]
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}
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type wrappedClient struct {
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*redis.Client
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*redis.ClusterClient
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}
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func (r *Store) Connect(ctx context.Context) error {
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var err error
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if r.cli.Client != nil {
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err = r.cli.Client.Ping(ctx).Err()
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}
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err = r.cli.ClusterClient.Ping(ctx).Err()
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setSpanError(ctx, err)
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return err
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}
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func (r *Store) Init(opts ...store.Option) error {
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for _, o := range opts {
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o(&r.opts)
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}
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err := r.configure()
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if err != nil {
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return err
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}
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return nil
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}
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func (r *Store) Client() *redis.Client {
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if r.cli.Client != nil {
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return r.cli.Client
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}
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return nil
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}
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func (r *Store) ClusterClient() *redis.ClusterClient {
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if r.cli.ClusterClient != nil {
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return r.cli.ClusterClient
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}
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return nil
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}
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func (r *Store) Disconnect(ctx context.Context) error {
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var err error
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select {
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case <-r.done:
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return err
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default:
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if r.cli.Client != nil {
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err = r.cli.Client.Close()
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} else if r.cli.ClusterClient != nil {
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err = r.cli.ClusterClient.Close()
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}
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close(r.done)
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return err
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}
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}
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func (r *Store) Exists(ctx context.Context, key string, opts ...store.ExistsOption) error {
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options := store.NewExistsOptions(opts...)
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timeout := r.opts.Timeout
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if options.Timeout > 0 {
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timeout = options.Timeout
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}
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if timeout > 0 {
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var cancel context.CancelFunc
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ctx, cancel = context.WithTimeout(ctx, timeout)
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defer cancel()
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}
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rkey := r.getKey(r.opts.Namespace, options.Namespace, key)
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
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ts := time.Now()
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var err error
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var val int64
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if r.cli.Client != nil {
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val, err = r.cli.Client.Exists(ctx, rkey).Result()
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} else {
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val, err = r.cli.ClusterClient.Exists(ctx, rkey).Result()
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}
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setSpanError(ctx, err)
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te := time.Since(ts)
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
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r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
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r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
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if err == redis.Nil || (err == nil && val == 0) {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
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return store.ErrNotFound
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} else if err == nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
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} else if err != nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
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return err
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}
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return nil
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}
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func (r *Store) Read(ctx context.Context, key string, val interface{}, opts ...store.ReadOption) error {
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options := store.NewReadOptions(opts...)
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timeout := r.opts.Timeout
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if options.Timeout > 0 {
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timeout = options.Timeout
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}
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if timeout > 0 {
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var cancel context.CancelFunc
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ctx, cancel = context.WithTimeout(ctx, timeout)
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defer cancel()
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}
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rkey := r.getKey(r.opts.Namespace, options.Namespace, key)
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
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ts := time.Now()
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var buf []byte
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var err error
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if r.cli.Client != nil {
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buf, err = r.cli.Client.Get(ctx, rkey).Bytes()
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} else {
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buf, err = r.cli.ClusterClient.Get(ctx, rkey).Bytes()
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}
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setSpanError(ctx, err)
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te := time.Since(ts)
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
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r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
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r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
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if err == redis.Nil || (err == nil && buf == nil) {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
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return store.ErrNotFound
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} else if err == nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
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} else if err != nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
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return err
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}
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switch b := val.(type) {
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case *[]byte:
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*b = buf
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case *string:
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*b = string(buf)
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default:
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if err = r.opts.Codec.Unmarshal(buf, val); err != nil {
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setSpanError(ctx, err)
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}
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}
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return err
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}
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func (r *Store) MRead(ctx context.Context, keys []string, vals interface{}, opts ...store.ReadOption) error {
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options := store.NewReadOptions(opts...)
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timeout := r.opts.Timeout
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if options.Timeout > 0 {
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timeout = options.Timeout
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}
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if timeout > 0 {
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var cancel context.CancelFunc
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ctx, cancel = context.WithTimeout(ctx, timeout)
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defer cancel()
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}
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if r.opts.Namespace != "" || options.Namespace != "" {
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for idx, key := range keys {
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keys[idx] = r.getKey(r.opts.Namespace, options.Namespace, key)
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}
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}
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
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ts := time.Now()
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var rvals []interface{}
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var err error
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if r.cli.Client != nil {
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rvals, err = r.cli.Client.MGet(ctx, keys...).Result()
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} else {
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rvals, err = r.cli.ClusterClient.MGet(ctx, keys...).Result()
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}
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setSpanError(ctx, err)
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te := time.Since(ts)
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
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r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
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r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
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if err == redis.Nil || (len(rvals) == 0) {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
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return store.ErrNotFound
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} else if err == nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
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} else if err != nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
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return err
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}
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vv := reflect.ValueOf(vals)
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vt := reflect.TypeOf(vals)
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switch vv.Kind() {
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case reflect.Ptr:
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vv = reflect.Indirect(vv)
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vt = vt.Elem()
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}
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if vv.Kind() != reflect.Slice {
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return store.ErrNotFound
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}
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nvv := reflect.MakeSlice(vt, len(rvals), len(rvals))
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vt = vt.Elem()
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for idx := 0; idx < len(rvals); idx++ {
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if rvals[idx] == nil {
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continue
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}
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itm := nvv.Index(idx)
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var buf []byte
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switch b := rvals[idx].(type) {
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case []byte:
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buf = b
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case string:
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buf = []byte(b)
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}
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// special case for raw data
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if vt.Kind() == reflect.Slice && vt.Elem().Kind() == reflect.Uint8 {
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itm.Set(reflect.MakeSlice(itm.Type(), len(buf), len(buf)))
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itm.SetBytes(buf)
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continue
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} else if vt.Kind() == reflect.String {
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itm.SetString(string(buf))
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continue
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}
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itm.Set(reflect.New(vt.Elem()))
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if err = r.opts.Codec.Unmarshal(buf, itm.Interface()); err != nil {
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setSpanError(ctx, err)
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return err
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}
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}
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vv.Set(nvv)
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return nil
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}
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func (r *Store) MDelete(ctx context.Context, keys []string, opts ...store.DeleteOption) error {
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options := store.NewDeleteOptions(opts...)
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timeout := r.opts.Timeout
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if options.Timeout > 0 {
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timeout = options.Timeout
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}
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if timeout > 0 {
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var cancel context.CancelFunc
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ctx, cancel = context.WithTimeout(ctx, timeout)
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defer cancel()
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}
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if r.opts.Namespace != "" || options.Namespace != "" {
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for idx, key := range keys {
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keys[idx] = r.getKey(r.opts.Namespace, options.Namespace, key)
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}
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}
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
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ts := time.Now()
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var err error
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if r.cli.Client != nil {
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err = r.cli.Client.Del(ctx, keys...).Err()
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} else {
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err = r.cli.ClusterClient.Del(ctx, keys...).Err()
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}
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setSpanError(ctx, err)
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te := time.Since(ts)
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
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r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
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r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
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if err == redis.Nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
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return store.ErrNotFound
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} else if err == nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
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} else if err != nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
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return err
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}
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return nil
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}
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func (r *Store) Delete(ctx context.Context, key string, opts ...store.DeleteOption) error {
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options := store.NewDeleteOptions(opts...)
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timeout := r.opts.Timeout
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if options.Timeout > 0 {
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timeout = options.Timeout
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}
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if timeout > 0 {
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var cancel context.CancelFunc
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ctx, cancel = context.WithTimeout(ctx, timeout)
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defer cancel()
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}
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
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ts := time.Now()
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var err error
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if r.cli.Client != nil {
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err = r.cli.Client.Del(ctx, r.getKey(r.opts.Namespace, options.Namespace, key)).Err()
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} else {
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err = r.cli.ClusterClient.Del(ctx, r.getKey(r.opts.Namespace, options.Namespace, key)).Err()
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}
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setSpanError(ctx, err)
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te := time.Since(ts)
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
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r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
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r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
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if err == redis.Nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
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return store.ErrNotFound
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} else if err == nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
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} else if err != nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
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return err
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}
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return nil
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}
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func (r *Store) MWrite(ctx context.Context, keys []string, vals []interface{}, opts ...store.WriteOption) error {
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options := store.NewWriteOptions(opts...)
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timeout := r.opts.Timeout
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if options.Timeout > 0 {
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timeout = options.Timeout
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}
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if timeout > 0 {
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var cancel context.CancelFunc
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ctx, cancel = context.WithTimeout(ctx, timeout)
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defer cancel()
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}
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kvs := make([]string, 0, len(keys)*2)
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for idx, key := range keys {
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kvs = append(kvs, r.getKey(r.opts.Namespace, options.Namespace, key))
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switch vt := vals[idx].(type) {
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case string:
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kvs = append(kvs, vt)
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case []byte:
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kvs = append(kvs, string(vt))
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default:
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buf, err := r.opts.Codec.Marshal(vt)
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if err != nil {
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return err
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}
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kvs = append(kvs, string(buf))
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}
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}
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
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ts := time.Now()
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pipeliner := func(pipe redis.Pipeliner) error {
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for idx := 0; idx < len(kvs); idx += 2 {
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if _, err := pipe.Set(ctx, kvs[idx], kvs[idx+1], options.TTL).Result(); err != nil {
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setSpanError(ctx, err)
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return err
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}
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}
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return nil
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}
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var err error
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var cmds []redis.Cmder
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if r.cli.Client != nil {
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cmds, err = r.cli.Client.Pipelined(ctx, pipeliner)
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} else {
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cmds, err = r.cli.ClusterClient.Pipelined(ctx, pipeliner)
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}
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setSpanError(ctx, err)
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te := time.Since(ts)
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
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r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
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r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
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if err == redis.Nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
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return store.ErrNotFound
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} else if err == nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
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} else if err != nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
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return err
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}
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for _, cmd := range cmds {
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if err = cmd.Err(); err != nil {
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if err == redis.Nil {
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
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return store.ErrNotFound
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}
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setSpanError(ctx, err)
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r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
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return err
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}
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}
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return nil
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}
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func (r *Store) Write(ctx context.Context, key string, val interface{}, opts ...store.WriteOption) error {
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options := store.NewWriteOptions(opts...)
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timeout := r.opts.Timeout
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if options.Timeout > 0 {
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timeout = options.Timeout
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}
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if timeout > 0 {
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var cancel context.CancelFunc
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ctx, cancel = context.WithTimeout(ctx, timeout)
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defer cancel()
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}
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rkey := r.getKey(r.opts.Namespace, options.Namespace, key)
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var buf []byte
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switch vt := val.(type) {
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case string:
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buf = []byte(vt)
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case []byte:
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buf = vt
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default:
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var err error
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buf, err = r.opts.Codec.Marshal(val)
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if err != nil {
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return err
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}
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}
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
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ts := time.Now()
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var err error
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if r.cli.Client != nil {
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err = r.cli.Client.Set(ctx, rkey, buf, options.TTL).Err()
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} else {
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err = r.cli.ClusterClient.Set(ctx, rkey, buf, options.TTL).Err()
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}
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setSpanError(ctx, err)
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te := time.Since(ts)
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r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
|
|
r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
|
|
r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
|
|
if err == redis.Nil {
|
|
r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
|
|
return store.ErrNotFound
|
|
} else if err == nil {
|
|
r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
|
|
} else if err != nil {
|
|
r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
|
|
return err
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func (r *Store) List(ctx context.Context, opts ...store.ListOption) ([]string, error) {
|
|
options := store.NewListOptions(opts...)
|
|
if len(options.Namespace) == 0 {
|
|
options.Namespace = r.opts.Namespace
|
|
}
|
|
|
|
rkey := r.getKey(options.Namespace, "", options.Prefix+"*")
|
|
if options.Suffix != "" {
|
|
rkey += options.Suffix
|
|
}
|
|
|
|
timeout := r.opts.Timeout
|
|
if options.Timeout > 0 {
|
|
timeout = options.Timeout
|
|
}
|
|
|
|
if timeout > 0 {
|
|
var cancel context.CancelFunc
|
|
ctx, cancel = context.WithTimeout(ctx, timeout)
|
|
defer cancel()
|
|
}
|
|
|
|
// TODO: add support for prefix/suffix/limit
|
|
r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
|
|
ts := time.Now()
|
|
var keys []string
|
|
var err error
|
|
|
|
if r.cli.Client != nil {
|
|
keys, err = r.cli.Client.Keys(ctx, rkey).Result()
|
|
} else {
|
|
err = r.cli.ClusterClient.ForEachMaster(ctx, func(nctx context.Context, cli *redis.Client) error {
|
|
nkeys, nerr := cli.Keys(nctx, rkey).Result()
|
|
if nerr != nil {
|
|
return nerr
|
|
}
|
|
keys = append(keys, nkeys...)
|
|
return nil
|
|
})
|
|
}
|
|
setSpanError(ctx, err)
|
|
te := time.Since(ts)
|
|
r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
|
|
r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
|
|
r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
|
|
if err == redis.Nil {
|
|
r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
|
|
return nil, store.ErrNotFound
|
|
} else if err == nil {
|
|
r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
|
|
} else if err != nil {
|
|
r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
|
|
return nil, err
|
|
}
|
|
|
|
prefix := r.opts.Namespace
|
|
if options.Namespace != "" {
|
|
prefix = options.Namespace
|
|
}
|
|
if prefix == "" {
|
|
return keys, nil
|
|
}
|
|
|
|
for idx, key := range keys {
|
|
keys[idx] = strings.TrimPrefix(key, prefix)
|
|
}
|
|
|
|
return keys, nil
|
|
}
|
|
|
|
func (r *Store) Options() store.Options {
|
|
return r.opts
|
|
}
|
|
|
|
func (r *Store) Name() string {
|
|
return r.opts.Name
|
|
}
|
|
|
|
func (r *Store) String() string {
|
|
return "redis"
|
|
}
|
|
|
|
func NewStore(opts ...store.Option) *Store {
|
|
return &Store{done: make(chan struct{}), opts: store.NewOptions(opts...)}
|
|
}
|
|
|
|
func (r *Store) configure() error {
|
|
var redisOptions *redis.Options
|
|
var redisClusterOptions *redis.ClusterOptions
|
|
var err error
|
|
|
|
nodes := r.opts.Addrs
|
|
|
|
if len(nodes) == 0 {
|
|
nodes = []string{"redis://127.0.0.1:6379"}
|
|
}
|
|
|
|
if r.cli != nil && r.opts.Context == nil {
|
|
return nil
|
|
}
|
|
|
|
if r.opts.Context != nil {
|
|
if c, ok := r.opts.Context.Value(configKey{}).(*redis.Options); ok {
|
|
redisOptions = c
|
|
if r.opts.TLSConfig != nil {
|
|
redisOptions.TLSConfig = r.opts.TLSConfig
|
|
}
|
|
}
|
|
|
|
if c, ok := r.opts.Context.Value(clusterConfigKey{}).(*redis.ClusterOptions); ok {
|
|
redisClusterOptions = c
|
|
if r.opts.TLSConfig != nil {
|
|
redisClusterOptions.TLSConfig = r.opts.TLSConfig
|
|
}
|
|
}
|
|
}
|
|
|
|
if redisOptions != nil && redisClusterOptions != nil {
|
|
return fmt.Errorf("must specify only one option Config or ClusterConfig")
|
|
}
|
|
|
|
if redisOptions == nil && redisClusterOptions == nil && r.cli != nil {
|
|
return nil
|
|
}
|
|
|
|
if redisOptions == nil && redisClusterOptions == nil && len(nodes) == 1 {
|
|
redisOptions, err = redis.ParseURL(nodes[0])
|
|
if err != nil {
|
|
redisOptions = DefaultOptions
|
|
redisOptions.Addr = r.opts.Addrs[0]
|
|
redisOptions.TLSConfig = r.opts.TLSConfig
|
|
}
|
|
} else if redisOptions == nil && redisClusterOptions == nil && len(nodes) > 1 {
|
|
redisClusterOptions = DefaultClusterOptions
|
|
redisClusterOptions.Addrs = r.opts.Addrs
|
|
redisClusterOptions.TLSConfig = r.opts.TLSConfig
|
|
}
|
|
|
|
if redisOptions != nil {
|
|
c := redis.NewClient(redisOptions)
|
|
setTracing(c, r.opts.Tracer)
|
|
r.cli = &wrappedClient{Client: c}
|
|
} else if redisClusterOptions != nil {
|
|
c := redis.NewClusterClient(redisClusterOptions)
|
|
setTracing(c, r.opts.Tracer)
|
|
r.cli = &wrappedClient{ClusterClient: c}
|
|
}
|
|
|
|
r.pool = pool.NewPool(func() *strings.Builder { return &strings.Builder{} })
|
|
|
|
r.statsMeter()
|
|
|
|
return nil
|
|
}
|
|
|
|
func (r *Store) getKey(mainNamespace string, opNamespace string, key string) string {
|
|
b := r.pool.Get()
|
|
defer r.pool.Put(b)
|
|
b.Reset()
|
|
|
|
if opNamespace == "" {
|
|
opNamespace = mainNamespace
|
|
}
|
|
if opNamespace != "" {
|
|
b.WriteString(opNamespace)
|
|
b.WriteString(DefaultPathSeparator)
|
|
}
|
|
b.WriteString(key)
|
|
return b.String()
|
|
}
|