micro-store-redis/redis.go
Vasiliy Tolstov 7c641fa8ac
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fixup nil pointer assign
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
2024-10-08 16:47:27 +03:00

738 lines
20 KiB
Go
Executable File

package redis
import (
"context"
"reflect"
"strings"
"time"
goredis "github.com/redis/go-redis/v9"
"go.unistack.org/micro/v3/semconv"
"go.unistack.org/micro/v3/store"
pool "go.unistack.org/micro/v3/util/xpool"
)
var (
DefaultPathSeparator = "/"
DefaultUniversalOptions = &goredis.UniversalOptions{
Username: "",
Password: "", // no password set
MaxRetries: 2,
MaxRetryBackoff: 256 * time.Millisecond,
DialTimeout: 1 * time.Second,
ReadTimeout: 1 * time.Second,
WriteTimeout: 1 * time.Second,
PoolTimeout: 1 * time.Second,
MinIdleConns: 10,
}
DefaultClusterOptions = &goredis.ClusterOptions{
Username: "",
Password: "", // no password set
MaxRetries: 2,
MaxRetryBackoff: 256 * time.Millisecond,
DialTimeout: 1 * time.Second,
ReadTimeout: 1 * time.Second,
WriteTimeout: 1 * time.Second,
PoolTimeout: 1 * time.Second,
MinIdleConns: 10,
}
DefaultOptions = &goredis.Options{
Username: "",
Password: "", // no password set
DB: 0, // use default DB
MaxRetries: 2,
MaxRetryBackoff: 256 * time.Millisecond,
DialTimeout: 1 * time.Second,
ReadTimeout: 1 * time.Second,
WriteTimeout: 1 * time.Second,
PoolTimeout: 1 * time.Second,
MinIdleConns: 10,
}
)
type Store struct {
opts store.Options
cli goredis.UniversalClient
done chan struct{}
pool *pool.StringsPool
}
func (r *Store) Connect(ctx context.Context) error {
if r.cli == nil {
return store.ErrNotConnected
}
err := r.cli.Ping(ctx).Err()
setSpanError(ctx, err)
return err
}
func (r *Store) Init(opts ...store.Option) error {
for _, o := range opts {
o(&r.opts)
}
err := r.configure()
if err != nil {
return err
}
return nil
}
func (r *Store) Client() *goredis.Client {
if c, ok := r.cli.(*goredis.Client); ok {
return c
}
return nil
}
func (r *Store) UniversalClient() goredis.UniversalClient {
return r.cli
}
func (r *Store) ClusterClient() *goredis.ClusterClient {
if c, ok := r.cli.(*goredis.ClusterClient); ok {
return c
}
return nil
}
func (r *Store) Disconnect(ctx context.Context) error {
var err error
select {
case <-r.done:
return err
default:
if r.cli != nil {
err = r.cli.Close()
}
close(r.done)
return err
}
}
func (r *Store) Exists(ctx context.Context, key string, opts ...store.ExistsOption) error {
b := r.pool.Get()
defer r.pool.Put(b)
options := store.NewExistsOptions(opts...)
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()
}
rkey := r.getKey(b, r.opts.Namespace, options.Namespace, key)
r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
ts := time.Now()
val, err := r.cli.Exists(ctx, rkey).Result()
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 == goredis.Nil || (err == nil && val == 0) {
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 nil
}
func (r *Store) Read(ctx context.Context, key string, val interface{}, opts ...store.ReadOption) error {
b := r.pool.Get()
defer r.pool.Put(b)
options := store.NewReadOptions(opts...)
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()
}
rkey := r.getKey(b, r.opts.Namespace, options.Namespace, key)
r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
ts := time.Now()
buf, err := r.cli.Get(ctx, rkey).Bytes()
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 == goredis.Nil || (err == nil && buf == 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
}
switch b := val.(type) {
case *[]byte:
*b = buf
case *string:
*b = string(buf)
default:
if err = r.opts.Codec.Unmarshal(buf, val); err != nil {
setSpanError(ctx, err)
}
}
return err
}
func (r *Store) MRead(ctx context.Context, keys []string, vals interface{}, opts ...store.ReadOption) error {
options := store.NewReadOptions(opts...)
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()
}
var rkeys []string
var pools []*strings.Builder
if r.opts.Namespace != "" || options.Namespace != "" {
rkeys = make([]string, len(keys))
pools = make([]*strings.Builder, len(keys))
for idx, key := range keys {
b := r.pool.Get()
pools[idx] = b
rkeys[idx] = r.getKey(b, r.opts.Namespace, options.Namespace, key)
}
}
r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
ts := time.Now()
var rvals []interface{}
var err error
if r.opts.Namespace != "" || options.Namespace != "" {
rvals, err = r.cli.MGet(ctx, rkeys...).Result()
for idx := range pools {
r.pool.Put(pools[idx])
}
} else {
rvals, err = r.cli.MGet(ctx, keys...).Result()
}
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 == goredis.Nil || (len(rvals) == 0) {
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
}
vv := reflect.ValueOf(vals)
vt := reflect.TypeOf(vals)
switch vv.Kind() {
case reflect.Ptr:
vv = reflect.Indirect(vv)
vt = vt.Elem()
}
if vv.Kind() != reflect.Slice {
return store.ErrNotFound
}
nvv := reflect.MakeSlice(vt, len(rvals), len(rvals))
vt = vt.Elem()
for idx := 0; idx < len(rvals); idx++ {
if rvals[idx] == nil {
continue
}
itm := nvv.Index(idx)
var buf []byte
switch b := rvals[idx].(type) {
case []byte:
buf = b
case string:
buf = []byte(b)
}
// special case for raw data
if vt.Kind() == reflect.Slice && vt.Elem().Kind() == reflect.Uint8 {
itm.Set(reflect.MakeSlice(itm.Type(), len(buf), len(buf)))
itm.SetBytes(buf)
continue
} else if vt.Kind() == reflect.String {
itm.SetString(string(buf))
continue
}
itm.Set(reflect.New(vt.Elem()))
if err = r.opts.Codec.Unmarshal(buf, itm.Interface()); err != nil {
setSpanError(ctx, err)
return err
}
}
vv.Set(nvv)
return nil
}
func (r *Store) MDelete(ctx context.Context, keys []string, opts ...store.DeleteOption) error {
options := store.NewDeleteOptions(opts...)
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()
}
var rkeys []string
var pools []*strings.Builder
if r.opts.Namespace != "" || options.Namespace != "" {
rkeys = make([]string, len(keys))
pools = make([]*strings.Builder, len(keys))
for idx, key := range keys {
b := r.pool.Get()
pools[idx] = b
rkeys[idx] = r.getKey(b, r.opts.Namespace, options.Namespace, key)
}
}
r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
ts := time.Now()
var err error
if r.opts.Namespace != "" || options.Namespace != "" {
err = r.cli.Del(ctx, rkeys...).Err()
for idx := range pools {
r.pool.Put(pools[idx])
}
} else {
err = r.cli.Del(ctx, keys...).Err()
}
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 == goredis.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 nil
}
func (r *Store) Delete(ctx context.Context, key string, opts ...store.DeleteOption) error {
b := r.pool.Get()
defer r.pool.Put(b)
options := store.NewDeleteOptions(opts...)
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()
}
r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
ts := time.Now()
err := r.cli.Del(ctx, r.getKey(b, r.opts.Namespace, options.Namespace, key)).Err()
te := time.Since(ts)
setSpanError(ctx, err)
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 == goredis.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 nil
}
func (r *Store) MWrite(ctx context.Context, keys []string, vals []interface{}, opts ...store.WriteOption) error {
options := store.NewWriteOptions(opts...)
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()
}
kvs := make([]string, 0, len(keys)*2)
pools := make([]*strings.Builder, len(keys))
for idx, key := range keys {
b := r.pool.Get()
pools[idx] = b
kvs = append(kvs, r.getKey(b, r.opts.Namespace, options.Namespace, key))
switch vt := vals[idx].(type) {
case string:
kvs = append(kvs, vt)
case []byte:
kvs = append(kvs, string(vt))
default:
buf, err := r.opts.Codec.Marshal(vt)
if err != nil {
return err
}
kvs = append(kvs, string(buf))
}
}
r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
pipeliner := func(pipe goredis.Pipeliner) error {
for idx := 0; idx < len(kvs); idx += 2 {
if _, err := pipe.Set(ctx, kvs[idx], kvs[idx+1], options.TTL).Result(); err != nil {
setSpanError(ctx, err)
return err
}
}
return nil
}
ts := time.Now()
cmds, err := r.cli.Pipelined(ctx, pipeliner)
for idx := range pools {
r.pool.Put(pools[idx])
}
te := time.Since(ts)
setSpanError(ctx, err)
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 == goredis.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
}
for _, cmd := range cmds {
if err = cmd.Err(); err != nil {
if err == goredis.Nil {
r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
return store.ErrNotFound
}
setSpanError(ctx, err)
r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
return err
}
}
return nil
}
func (r *Store) Write(ctx context.Context, key string, val interface{}, opts ...store.WriteOption) error {
b := r.pool.Get()
defer r.pool.Put(b)
options := store.NewWriteOptions(opts...)
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()
}
rkey := r.getKey(b, r.opts.Namespace, options.Namespace, key)
var buf []byte
switch vt := val.(type) {
case string:
buf = []byte(vt)
case []byte:
buf = vt
default:
var err error
buf, err = r.opts.Codec.Marshal(val)
if err != nil {
return err
}
}
r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
ts := time.Now()
err := r.cli.Set(ctx, rkey, buf, options.TTL).Err()
te := time.Since(ts)
setSpanError(ctx, err)
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 == goredis.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) {
b := r.pool.Get()
defer r.pool.Put(b)
options := store.NewListOptions(opts...)
if len(options.Namespace) == 0 {
options.Namespace = r.opts.Namespace
}
rkey := r.getKey(b, 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 c, ok := r.cli.(*goredis.ClusterClient); ok {
err = c.ForEachMaster(ctx, func(nctx context.Context, cli *goredis.Client) error {
nkeys, nerr := cli.Keys(nctx, rkey).Result()
if nerr != nil {
return nerr
}
keys = append(keys, nkeys...)
return nil
})
} else {
keys, err = r.cli.Keys(ctx, rkey).Result()
}
te := time.Since(ts)
setSpanError(ctx, err)
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 == goredis.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 {
universalOptions := &goredis.UniversalOptions{}
if r.cli != nil && r.opts.Context == nil {
return nil
}
if r.opts.Context != nil {
if o, ok := r.opts.Context.Value(configKey{}).(*goredis.Options); ok {
universalOptions.Addrs = []string{o.Addr}
universalOptions.Dialer = o.Dialer
universalOptions.OnConnect = o.OnConnect
universalOptions.Username = o.Username
universalOptions.Password = o.Password
universalOptions.MaxRetries = o.MaxRetries
universalOptions.MinRetryBackoff = o.MinRetryBackoff
universalOptions.MaxRetryBackoff = o.MaxRetryBackoff
universalOptions.DialTimeout = o.DialTimeout
universalOptions.ReadTimeout = o.ReadTimeout
universalOptions.WriteTimeout = o.WriteTimeout
universalOptions.ContextTimeoutEnabled = o.ContextTimeoutEnabled
universalOptions.PoolFIFO = o.PoolFIFO
universalOptions.PoolSize = o.PoolSize
universalOptions.PoolTimeout = o.PoolTimeout
universalOptions.MinIdleConns = o.MinIdleConns
universalOptions.MaxIdleConns = o.MaxIdleConns
universalOptions.ConnMaxIdleTime = o.ConnMaxIdleTime
universalOptions.ConnMaxLifetime = o.ConnMaxLifetime
if r.opts.TLSConfig != nil {
universalOptions.TLSConfig = r.opts.TLSConfig
}
}
if o, ok := r.opts.Context.Value(clusterConfigKey{}).(*goredis.ClusterOptions); ok {
universalOptions.Addrs = o.Addrs
universalOptions.Dialer = o.Dialer
universalOptions.OnConnect = o.OnConnect
universalOptions.Username = o.Username
universalOptions.Password = o.Password
universalOptions.MaxRedirects = o.MaxRedirects
universalOptions.ReadOnly = o.ReadOnly
universalOptions.RouteByLatency = o.RouteByLatency
universalOptions.RouteRandomly = o.RouteRandomly
universalOptions.MaxRetries = o.MaxRetries
universalOptions.MinRetryBackoff = o.MinRetryBackoff
universalOptions.MaxRetryBackoff = o.MaxRetryBackoff
universalOptions.DialTimeout = o.DialTimeout
universalOptions.ReadTimeout = o.ReadTimeout
universalOptions.WriteTimeout = o.WriteTimeout
universalOptions.ContextTimeoutEnabled = o.ContextTimeoutEnabled
universalOptions.PoolFIFO = o.PoolFIFO
universalOptions.PoolSize = o.PoolSize
universalOptions.PoolTimeout = o.PoolTimeout
universalOptions.MinIdleConns = o.MinIdleConns
universalOptions.MaxIdleConns = o.MaxIdleConns
universalOptions.ConnMaxIdleTime = o.ConnMaxIdleTime
universalOptions.ConnMaxLifetime = o.ConnMaxLifetime
if r.opts.TLSConfig != nil {
universalOptions.TLSConfig = r.opts.TLSConfig
}
}
if o, ok := r.opts.Context.Value(universalConfigKey{}).(*goredis.UniversalOptions); ok {
universalOptions = o
if r.opts.TLSConfig != nil {
universalOptions.TLSConfig = r.opts.TLSConfig
}
}
}
if universalOptions == nil {
universalOptions = DefaultUniversalOptions
}
if len(r.opts.Addrs) > 0 {
universalOptions.Addrs = r.opts.Addrs
} else {
universalOptions.Addrs = []string{"127.0.0.1:6379"}
}
r.cli = goredis.NewUniversalClient(universalOptions)
setTracing(r.cli, r.opts.Tracer)
r.pool = pool.NewStringsPool(50)
r.statsMeter()
return nil
}
func (r *Store) getKey(b *strings.Builder, mainNamespace string, opNamespace string, key string) string {
if opNamespace == "" {
opNamespace = mainNamespace
}
if opNamespace != "" {
b.WriteString(opNamespace)
b.WriteString(DefaultPathSeparator)
}
b.WriteString(key)
return b.String()
}