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pipe.go
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pipe.go
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package instance
import (
"context"
"errors"
"fmt"
"github.com/cirruslabs/cirrus-ci-agent/api"
"github.com/cirruslabs/cirrus-cli/internal/executor/instance/container"
"github.com/cirruslabs/cirrus-cli/internal/executor/instance/runconfig"
"github.com/cirruslabs/cirrus-cli/internal/executor/instance/volume"
"github.com/cirruslabs/cirrus-cli/internal/executor/platform"
)
var ErrPipeCreationFailed = errors.New("failed to create pipe instance")
type PipeStage struct {
Image string
CommandFrom, CommandTo string
}
type PipeInstance struct {
Stages []PipeStage
CPU float32
Memory uint32
CustomWorkingDir string
}
// PipeStagesFromCommands uses image hints in commands to build the stages.
func PipeStagesFromCommands(commands []*api.Command) ([]PipeStage, error) {
var stages []PipeStage
for i, command := range commands {
image, found := command.Properties["image"]
if !found {
if i == 0 {
return nil, fmt.Errorf("%w: first command does not have an image property", ErrPipeCreationFailed)
}
continue
}
// Close old stage
if len(stages) != 0 {
stages[len(stages)-1].CommandTo = command.Name
}
// Open new stage
stages = append(stages, PipeStage{
Image: image,
CommandFrom: command.Name,
})
}
return stages, nil
}
func (pi *PipeInstance) Run(ctx context.Context, config *runconfig.RunConfig) (err error) {
platform := platform.NewUnix()
logger := config.Logger()
containerBackend, err := config.GetContainerBackend()
if err != nil {
return err
}
agentVolume, workingVolume, err := volume.CreateWorkingVolumeFromConfig(ctx, config, platform, nil)
if err != nil {
return err
}
defer func() {
if config.ContainerOptions.NoCleanup {
logger.Infof("not cleaning up agent volume %s, don't forget to remove it with \"docker volume rm %s\"",
agentVolume.Name(), agentVolume.Name())
logger.Infof("not cleaning up working volume %s, don't forget to remove it with \"docker volume rm %s\"",
workingVolume.Name(), workingVolume.Name())
return
}
cleanupErr := agentVolume.Close(containerBackend)
if err == nil {
err = cleanupErr
}
cleanupErr = workingVolume.Close(containerBackend)
if err == nil {
err = cleanupErr
}
}()
for _, stage := range pi.Stages {
params := &container.Params{
Image: stage.Image,
CPU: pi.CPU,
Memory: pi.Memory,
CommandFrom: stage.CommandFrom,
CommandTo: stage.CommandTo,
Platform: platform,
AgentVolumeName: agentVolume.Name(),
WorkingVolumeName: workingVolume.Name(),
WorkingDirectory: pi.WorkingDirectory(config.ProjectDir, config.DirtyMode),
}
if err := container.RunContainerizedAgent(ctx, config, params); err != nil {
return err
}
}
return nil
}
func (pi *PipeInstance) WorkingDirectory(projectDir string, dirtyMode bool) string {
if pi.CustomWorkingDir != "" {
return pi.CustomWorkingDir
}
return platform.NewUnix().GenericWorkingDir()
}
func (pi *PipeInstance) Close() error {
return nil
}