woodpecker/agent/rpc/client_grpc.go

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// Copyright 2023 Woodpecker Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
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package rpc
import (
"context"
"encoding/json"
"strings"
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"time"
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"github.com/cenkalti/backoff/v4"
"github.com/rs/zerolog/log"
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"google.golang.org/grpc"
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"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
backend "go.woodpecker-ci.org/woodpecker/v2/pipeline/backend/types"
"go.woodpecker-ci.org/woodpecker/v2/pipeline/rpc"
"go.woodpecker-ci.org/woodpecker/v2/pipeline/rpc/proto"
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)
// Set grpc version on compile time to compare against server version response.
const ClientGrpcVersion int32 = proto.Version
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type client struct {
client proto.WoodpeckerClient
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conn *grpc.ClientConn
}
// NewGrpcClient returns a new grpc Client.
func NewGrpcClient(conn *grpc.ClientConn) rpc.Peer {
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client := new(client)
client.client = proto.NewWoodpeckerClient(conn)
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client.conn = conn
return client
}
func (c *client) Close() error {
return c.conn.Close()
}
func (c *client) newBackOff() backoff.BackOff {
b := backoff.NewExponentialBackOff()
b.MaxElapsedTime = 0
b.MaxInterval = 10 * time.Second //nolint:mnd
b.InitialInterval = 10 * time.Millisecond //nolint:mnd
return b
}
// Version returns the server- & grpc-version.
func (c *client) Version(ctx context.Context) (*rpc.Version, error) {
res, err := c.client.Version(ctx, &proto.Empty{})
if err != nil {
return nil, err
}
return &rpc.Version{
GrpcVersion: res.GrpcVersion,
ServerVersion: res.ServerVersion,
}, nil
}
// Next returns the next workflow in the queue.
func (c *client) Next(ctx context.Context, f rpc.Filter) (*rpc.Workflow, error) {
var res *proto.NextResponse
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var err error
retry := c.newBackOff()
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req := new(proto.NextRequest)
req.Filter = new(proto.Filter)
req.Filter.Labels = f.Labels
for {
res, err = c.client.Next(ctx, req)
if err == nil {
break
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}
switch status.Code(err) {
case codes.Canceled:
if ctx.Err() != nil {
// expected as context was canceled
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log.Debug().Err(err).Msgf("grpc error: next(): context canceled")
return nil, nil
}
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log.Error().Err(err).Msgf("grpc error: next(): code: %v", status.Code(err))
return nil, err
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case
codes.Aborted,
codes.DataLoss,
codes.DeadlineExceeded,
codes.Internal,
codes.Unavailable:
// non-fatal errors
// TODO: remove after adding continuous data exchange by something like #536
if strings.Contains(err.Error(), "\"too_many_pings\"") {
// https://github.com/woodpecker-ci/woodpecker/issues/717#issuecomment-1049365104
log.Trace().Err(err).Msg("grpc: to many keepalive pings without sending data")
} else {
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log.Warn().Err(err).Msgf("grpc error: next(): code: %v", status.Code(err))
}
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default:
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log.Error().Err(err).Msgf("grpc error: next(): code: %v", status.Code(err))
return nil, err
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}
select {
case <-time.After(retry.NextBackOff()):
case <-ctx.Done():
return nil, nil
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}
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}
if res.GetWorkflow() == nil {
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return nil, nil
}
w := new(rpc.Workflow)
w.ID = res.GetWorkflow().GetId()
w.Timeout = res.GetWorkflow().GetTimeout()
w.Config = new(backend.Config)
if err := json.Unmarshal(res.GetWorkflow().GetPayload(), w.Config); err != nil {
log.Error().Err(err).Msgf("could not unmarshal workflow config of '%s'", w.ID)
}
return w, nil
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}
// Wait blocks until the workflow is complete.
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func (c *client) Wait(ctx context.Context, id string) (err error) {
retry := c.newBackOff()
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req := new(proto.WaitRequest)
req.Id = id
for {
_, err = c.client.Wait(ctx, req)
if err == nil {
break
}
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switch status.Code(err) {
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case codes.Canceled:
if ctx.Err() != nil {
// expected as context was canceled
log.Debug().Err(err).Msgf("grpc error: wait(): context canceled")
return nil
}
log.Error().Err(err).Msgf("grpc error: wait(): code: %v", status.Code(err))
return err
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case
codes.Aborted,
codes.DataLoss,
codes.DeadlineExceeded,
codes.Internal,
codes.Unavailable:
// non-fatal errors
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log.Warn().Err(err).Msgf("grpc error: wait(): code: %v", status.Code(err))
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default:
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log.Error().Err(err).Msgf("grpc error: wait(): code: %v", status.Code(err))
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return err
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}
select {
case <-time.After(retry.NextBackOff()):
case <-ctx.Done():
return ctx.Err()
}
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}
return nil
}
// Init signals the workflow is initialized.
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func (c *client) Init(ctx context.Context, workflowID string, state rpc.WorkflowState) (err error) {
retry := c.newBackOff()
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req := new(proto.InitRequest)
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req.Id = workflowID
req.State = new(proto.WorkflowState)
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req.State.Started = state.Started
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req.State.Finished = state.Finished
req.State.Error = state.Error
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for {
_, err = c.client.Init(ctx, req)
if err == nil {
break
}
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log.Error().Err(err).Msgf("grpc error: init(): code: %v", status.Code(err))
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switch status.Code(err) {
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case codes.Canceled:
if ctx.Err() != nil {
// expected as context was canceled
log.Debug().Err(err).Msgf("grpc error: init(): context canceled")
return nil
}
log.Error().Err(err).Msgf("grpc error: init(): code: %v", status.Code(err))
return err
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case
codes.Aborted,
codes.DataLoss,
codes.DeadlineExceeded,
codes.Internal,
codes.Unavailable:
// non-fatal errors
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log.Warn().Err(err).Msgf("grpc error: init(): code: %v", status.Code(err))
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default:
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log.Error().Err(err).Msgf("grpc error: init(): code: %v", status.Code(err))
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return err
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}
select {
case <-time.After(retry.NextBackOff()):
case <-ctx.Done():
return ctx.Err()
}
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}
return nil
}
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// Done signals the workflow is complete.
func (c *client) Done(ctx context.Context, workflowID string, state rpc.WorkflowState) (err error) {
retry := c.newBackOff()
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req := new(proto.DoneRequest)
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req.Id = workflowID
req.State = new(proto.WorkflowState)
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req.State.Started = state.Started
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req.State.Finished = state.Finished
req.State.Error = state.Error
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for {
_, err = c.client.Done(ctx, req)
if err == nil {
break
}
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log.Error().Err(err).Msgf("grpc error: done(): code: %v", status.Code(err))
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switch status.Code(err) {
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case codes.Canceled:
if ctx.Err() != nil {
// expected as context was canceled
log.Debug().Err(err).Msgf("grpc error: done(): context canceled")
return nil
}
log.Error().Err(err).Msgf("grpc error: done(): code: %v", status.Code(err))
return err
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case
codes.Aborted,
codes.DataLoss,
codes.DeadlineExceeded,
codes.Internal,
codes.Unavailable:
// non-fatal errors
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log.Warn().Err(err).Msgf("grpc error: done(): code: %v", status.Code(err))
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default:
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log.Error().Err(err).Msgf("grpc error: done(): code: %v", status.Code(err))
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return err
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}
select {
case <-time.After(retry.NextBackOff()):
case <-ctx.Done():
return ctx.Err()
}
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}
return nil
}
// Extend extends the workflow deadline.
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func (c *client) Extend(ctx context.Context, id string) (err error) {
retry := c.newBackOff()
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req := new(proto.ExtendRequest)
req.Id = id
for {
_, err = c.client.Extend(ctx, req)
if err == nil {
break
}
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log.Error().Err(err).Msgf("grpc error: extend(): code: %v", status.Code(err))
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switch status.Code(err) {
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case codes.Canceled:
if ctx.Err() != nil {
// expected as context was canceled
log.Debug().Err(err).Msgf("grpc error: extend(): context canceled")
return nil
}
log.Error().Err(err).Msgf("grpc error: extend(): code: %v", status.Code(err))
return err
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case
codes.Aborted,
codes.DataLoss,
codes.DeadlineExceeded,
codes.Internal,
codes.Unavailable:
// non-fatal errors
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log.Warn().Err(err).Msgf("grpc error: extend(): code: %v", status.Code(err))
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default:
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log.Error().Err(err).Msgf("grpc error: extend(): code: %v", status.Code(err))
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return err
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}
select {
case <-time.After(retry.NextBackOff()):
case <-ctx.Done():
return ctx.Err()
}
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}
return nil
}
// Update updates the workflow state.
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func (c *client) Update(ctx context.Context, id string, state rpc.StepState) (err error) {
retry := c.newBackOff()
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req := new(proto.UpdateRequest)
req.Id = id
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req.State = new(proto.StepState)
req.State.StepUuid = state.StepUUID
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req.State.Started = state.Started
req.State.Finished = state.Finished
req.State.Exited = state.Exited
req.State.ExitCode = int32(state.ExitCode)
req.State.Error = state.Error
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for {
_, err = c.client.Update(ctx, req)
if err == nil {
break
}
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log.Error().Err(err).Msgf("grpc error: update(): code: %v", status.Code(err))
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switch status.Code(err) {
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case codes.Canceled:
if ctx.Err() != nil {
// expected as context was canceled
log.Debug().Err(err).Msgf("grpc error: update(): context canceled")
return nil
}
log.Error().Err(err).Msgf("grpc error: update(): code: %v", status.Code(err))
return err
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case
codes.Aborted,
codes.DataLoss,
codes.DeadlineExceeded,
codes.Internal,
codes.Unavailable:
// non-fatal errors
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log.Warn().Err(err).Msgf("grpc error: update(): code: %v", status.Code(err))
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default:
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log.Error().Err(err).Msgf("grpc error: update(): code: %v", status.Code(err))
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return err
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}
select {
case <-time.After(retry.NextBackOff()):
case <-ctx.Done():
return ctx.Err()
}
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}
return nil
}
// Log writes the workflow log entry.
func (c *client) Log(ctx context.Context, logEntry *rpc.LogEntry) (err error) {
retry := c.newBackOff()
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req := new(proto.LogRequest)
req.LogEntry = new(proto.LogEntry)
req.LogEntry.StepUuid = logEntry.StepUUID
req.LogEntry.Data = logEntry.Data
req.LogEntry.Line = int32(logEntry.Line)
req.LogEntry.Time = logEntry.Time
req.LogEntry.Type = int32(logEntry.Type)
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for {
_, err = c.client.Log(ctx, req)
if err == nil {
break
}
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switch status.Code(err) {
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case codes.Canceled:
if ctx.Err() != nil {
// expected as context was canceled
log.Debug().Err(err).Msgf("grpc error: log(): context canceled")
return nil
}
log.Error().Err(err).Msgf("grpc error: log(): code: %v", status.Code(err))
return err
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case
codes.Aborted,
codes.DataLoss,
codes.DeadlineExceeded,
codes.Internal,
codes.Unavailable:
// non-fatal errors
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log.Warn().Err(err).Msgf("grpc error: log(): code: %v", status.Code(err))
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default:
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log.Error().Err(err).Msgf("grpc error: log(): code: %v", status.Code(err))
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return err
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}
select {
case <-time.After(retry.NextBackOff()):
case <-ctx.Done():
return ctx.Err()
}
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}
return nil
}
func (c *client) RegisterAgent(ctx context.Context, platform, backend, version string, capacity int) (int64, error) {
req := new(proto.RegisterAgentRequest)
req.Platform = platform
req.Backend = backend
req.Version = version
req.Capacity = int32(capacity)
res, err := c.client.RegisterAgent(ctx, req)
return res.GetAgentId(), err
}
func (c *client) UnregisterAgent(ctx context.Context) error {
_, err := c.client.UnregisterAgent(ctx, &proto.Empty{})
return err
}
func (c *client) ReportHealth(ctx context.Context) (err error) {
retry := c.newBackOff()
req := new(proto.ReportHealthRequest)
req.Status = "I am alive!"
for {
_, err = c.client.ReportHealth(ctx, req)
if err == nil {
return nil
}
switch status.Code(err) {
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case codes.Canceled:
if ctx.Err() != nil {
// expected as context was canceled
log.Debug().Err(err).Msgf("grpc error: report_health(): context canceled")
return nil
}
log.Error().Err(err).Msgf("grpc error: report_health(): code: %v", status.Code(err))
return err
case
codes.Aborted,
codes.DataLoss,
codes.DeadlineExceeded,
codes.Internal,
codes.Unavailable:
// non-fatal errors
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log.Warn().Err(err).Msgf("grpc error: report_health(): code: %v", status.Code(err))
default:
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log.Error().Err(err).Msgf("grpc error: report_health(): code: %v", status.Code(err))
return err
}
select {
case <-time.After(retry.NextBackOff()):
case <-ctx.Done():
return ctx.Err()
}
}
}