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exec.go
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exec.go
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package redis
import (
"errors"
"io"
"net"
"strings"
"github.com/justtrackio/gosoline/pkg/exec"
"github.com/justtrackio/gosoline/pkg/log"
)
func NewExecutor(logger log.Logger, settings exec.BackoffSettings, name string) exec.Executor {
return NewBackoffExecutor(logger, settings, name)
}
func NewBackoffExecutor(logger log.Logger, settings exec.BackoffSettings, name string) exec.Executor {
executableResource := &exec.ExecutableResource{
Type: "redis",
Name: name,
}
checks := []exec.ErrorChecker{
RetryableErrorChecker,
OOMChecker,
NilChecker,
}
return exec.NewBackoffExecutor(logger, executableResource, &settings, checks...)
}
func NilChecker(_ interface{}, err error) exec.ErrorType {
if errors.Is(err, Nil) {
return exec.ErrorTypeOk
}
return exec.ErrorTypeUnknown
}
func OOMChecker(_ interface{}, err error) exec.ErrorType {
if strings.HasPrefix(err.Error(), "OOM") {
return exec.ErrorTypeRetryable
}
return exec.ErrorTypeUnknown
}
func RetryableErrorChecker(_ interface{}, err error) exec.ErrorType {
if IsRetryableError(err) {
return exec.ErrorTypeRetryable
}
return exec.ErrorTypeUnknown
}
func IsRetryableError(err error) bool {
if err == nil {
return false
}
if err == io.EOF {
return true
}
if _, ok := err.(net.Error); ok {
return true
}
s := err.Error()
if s == "ERR max number of clients reached" {
return true
}
if strings.HasPrefix(s, "LOADING ") {
return true
}
if strings.HasPrefix(s, "READONLY ") {
return true
}
if strings.HasPrefix(s, "CLUSTERDOWN ") {
return true
}
return false
}