mirror of
https://gitee.com/milvus-io/milvus.git
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109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package datacoord
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import (
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"context"
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"errors"
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"fmt"
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"time"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/proto/commonpb"
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)
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// Response response interface for verification
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type Response interface {
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GetStatus() *commonpb.Status
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}
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var errNilResponse = errors.New("response is nil")
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var errNilStatusResponse = errors.New("response has nil status")
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var errUnknownResponseType = errors.New("unknown response type")
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// VerifyResponse verify grpc Response 1. check error is nil 2. check response.GetStatus() with status success
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func VerifyResponse(response interface{}, err error) error {
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if err != nil {
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return err
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}
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if response == nil {
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return errNilResponse
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}
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switch resp := response.(type) {
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case Response:
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// note that resp will not be nil here, since it's still a interface
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if resp.GetStatus() == nil {
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return errNilStatusResponse
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}
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if resp.GetStatus().GetErrorCode() != commonpb.ErrorCode_Success {
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return errors.New(resp.GetStatus().GetReason())
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}
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case *commonpb.Status:
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if resp == nil {
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return errNilResponse
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}
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if resp.ErrorCode != commonpb.ErrorCode_Success {
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return errors.New(resp.GetReason())
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}
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default:
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return errUnknownResponseType
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}
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return nil
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}
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// LongTermChecker checks we receive at least one msg in d duration. If not, checker
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// will print a warn message.
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type LongTermChecker struct {
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d time.Duration
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t *time.Ticker
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ch chan struct{}
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warn string
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name string
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}
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// NewLongTermChecker create a long term checker specified name, checking interval and warning string to print
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func NewLongTermChecker(ctx context.Context, name string, d time.Duration, warn string) *LongTermChecker {
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c := &LongTermChecker{
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name: name,
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d: d,
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warn: warn,
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ch: make(chan struct{}),
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}
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return c
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}
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// Start starts the check process
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func (c *LongTermChecker) Start() {
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c.t = time.NewTicker(c.d)
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go func() {
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for {
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select {
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case <-c.ch:
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log.Warn(fmt.Sprintf("long term checker [%s] shutdown", c.name))
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return
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case <-c.t.C:
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log.Warn(c.warn)
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}
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}
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}()
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}
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// Check reset the time ticker
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func (c *LongTermChecker) Check() {
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c.t.Reset(c.d)
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}
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// Stop stop the checker
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func (c *LongTermChecker) Stop() {
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c.t.Stop()
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close(c.ch)
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}
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