forked from mirror/redis
95 lines
2.3 KiB
Go
95 lines
2.3 KiB
Go
package redis_test
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import (
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"context"
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"fmt"
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"net"
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"github.com/go-redis/redis/v9"
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)
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type redisHook struct{}
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var _ redis.Hook = redisHook{}
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func (redisHook) DialHook(hook redis.DialHook) redis.DialHook {
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return func(ctx context.Context, network, addr string) (net.Conn, error) {
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fmt.Printf("dialing %s %s\n", network, addr)
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conn, err := hook(ctx, network, addr)
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fmt.Printf("finished dialing %s %s\n", network, addr)
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return conn, err
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}
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}
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func (redisHook) ProcessHook(hook redis.ProcessHook) redis.ProcessHook {
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return func(ctx context.Context, cmd redis.Cmder) error {
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fmt.Printf("starting processing: <%s>\n", cmd)
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err := hook(ctx, cmd)
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fmt.Printf("finished processing: <%s>\n", cmd)
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return err
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}
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}
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func (redisHook) ProcessPipelineHook(hook redis.ProcessPipelineHook) redis.ProcessPipelineHook {
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return func(ctx context.Context, cmds []redis.Cmder) error {
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fmt.Printf("pipeline starting processing: %v\n", cmds)
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err := hook(ctx, cmds)
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fmt.Printf("pipeline finished processing: %v\n", cmds)
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return err
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}
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}
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func Example_instrumentation() {
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rdb := redis.NewClient(&redis.Options{
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Addr: ":6379",
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})
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rdb.AddHook(redisHook{})
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rdb.Ping(ctx)
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// Output: starting processing: <ping: >
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// dialing tcp :6379
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// finished dialing tcp :6379
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// finished processing: <ping: PONG>
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}
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func ExamplePipeline_instrumentation() {
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rdb := redis.NewClient(&redis.Options{
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Addr: ":6379",
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})
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rdb.AddHook(redisHook{})
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rdb.Pipelined(ctx, func(pipe redis.Pipeliner) error {
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pipe.Ping(ctx)
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pipe.Ping(ctx)
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return nil
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})
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// Output: pipeline starting processing: [ping: ping: ]
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// dialing tcp :6379
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// finished dialing tcp :6379
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// pipeline finished processing: [ping: PONG ping: PONG]
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}
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func ExampleClient_Watch_instrumentation() {
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rdb := redis.NewClient(&redis.Options{
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Addr: ":6379",
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})
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rdb.AddHook(redisHook{})
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rdb.Watch(ctx, func(tx *redis.Tx) error {
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tx.Ping(ctx)
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tx.Ping(ctx)
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return nil
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}, "foo")
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// Output:
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// starting processing: <watch foo: >
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// dialing tcp :6379
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// finished dialing tcp :6379
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// finished processing: <watch foo: OK>
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// starting processing: <ping: >
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// finished processing: <ping: PONG>
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// starting processing: <ping: >
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// finished processing: <ping: PONG>
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// starting processing: <unwatch: >
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// finished processing: <unwatch: OK>
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}
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