agola/internal/services/runservice/executor/driver/driver.go

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// Copyright 2019 Sorint.lab
//
// 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.
package driver
import (
"context"
"io"
)
const (
agolaLabelKey = "agola"
agolaLabelValue = "true"
podIDKey = "podID"
containerIndexKey = "index"
taskKey = "task"
podLabelPrefix = "podlabel_"
)
// Driver is a generic interface around the pod concept (a group of "containers"
// sharing, at least, the same network namespace)
// It's just tailored aroun the need of an executor and should be quite generic
// to work with multiple implementations. For example:
// * Docker containers
// * Kubernetes pods
// * A Virtual Machine on which we execute multiple processes
type Driver interface {
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NewPod(ctx context.Context, podConfig *PodConfig, out io.Writer) (Pod, error)
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GetPodsByLabels(ctx context.Context, labels map[string]string, all bool) ([]Pod, error)
GetPodByID(ctx context.Context, containerID string) (Pod, error)
}
type Pod interface {
// ID returns the pod id
ID() string
// Labels returns the pod labels
Labels() map[string]string
// Stop stops the pod
Stop(ctx context.Context) error
// Stop stops the pod
Remove(ctx context.Context) error
// Exec executes a command inside the first container in the Pod
Exec(ctx context.Context, execConfig *ExecConfig) (ContainerExec, error)
// CopyTo copies srcPath inside dstPath of the first container in the Pod
CopyTo(ctx context.Context, srcPath, dstPath string) error
}
type ContainerExec interface {
Stdin() io.WriteCloser
Wait(ctx context.Context) (int, error)
}
type PodConfig struct {
Containers []*ContainerConfig
Labels map[string]string
// The container dir where the init volume will be mounted
InitVolumeDir string
}
type ContainerConfig struct {
Cmd []string
Env map[string]string
WorkingDir string
Image string
User string
Privileged bool
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RegistryAuth string
}
type ExecConfig struct {
Cmd []string
Env map[string]string
WorkingDir string
User string
Stdout io.Writer
Stderr io.Writer
Tty bool
}