d2b09d854f
Implement a new error handling library based on pkg/errors. It provides stack saving on wrapping and exports some function to add stack saving also to external errors. It also implements custom zerolog error formatting without adding too much verbosity by just printing the chain error file:line without a full stack trace of every error. * Add a --detailed-errors options to print error with they full chain * Wrap all error returns. Use errors.WithStack to wrap without adding a new messsage and error.Wrap[f] to add a message. * Add golangci-lint wrapcheck to check that external packages errors are wrapped. This won't check that internal packages error are wrapped. But we want also to ensure this case so we'll have to find something else to check also these.
129 lines
3.3 KiB
Go
129 lines
3.3 KiB
Go
// Copyright 2019 Sorint.lab
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package driver
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import (
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"context"
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"fmt"
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"io"
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"os"
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"path/filepath"
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"agola.io/agola/internal/errors"
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"agola.io/agola/internal/services/executor/registry"
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"agola.io/agola/services/types"
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)
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const (
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toolboxPrefix = "agola-toolbox"
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labelPrefix = "agola.io/"
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agolaLabelKey = labelPrefix + "agola"
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agolaLabelValue = "true"
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executorIDKey = labelPrefix + "executorid"
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podIDKey = labelPrefix + "podid"
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taskIDKey = labelPrefix + "taskid"
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containerIndexKey = labelPrefix + "containerindex"
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)
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// Driver is a generic interface around the pod concept (a group of "containers"
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// sharing, at least, the same network namespace)
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// It's just tailored aroun the need of an executor and should be quite generic
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// to work with multiple implementations. For example:
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// * Docker containers
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// * Kubernetes pods
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// * A Virtual Machine on which we execute multiple processes
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type Driver interface {
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Setup(ctx context.Context) error
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NewPod(ctx context.Context, podConfig *PodConfig, out io.Writer) (Pod, error)
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GetPods(ctx context.Context, all bool) ([]Pod, error)
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ExecutorGroup(ctx context.Context) (string, error)
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GetExecutors(ctx context.Context) ([]string, error)
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Archs(ctx context.Context) ([]types.Arch, error)
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}
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type Pod interface {
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// ID returns the pod id
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ID() string
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// ExecutorID return the pod owner executor id
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ExecutorID() string
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// TaskID return the pod task id
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TaskID() string
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// Stop stops the pod
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Stop(ctx context.Context) error
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// Stop stops the pod
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Remove(ctx context.Context) error
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// Exec executes a command inside the first container in the Pod
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Exec(ctx context.Context, execConfig *ExecConfig) (ContainerExec, error)
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}
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type ContainerExec interface {
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Stdin() io.WriteCloser
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Wait(ctx context.Context) (int, error)
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}
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type PodConfig struct {
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ID string
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TaskID string
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Containers []*ContainerConfig
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Arch types.Arch
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// The container dir where the init volume will be mounted
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InitVolumeDir string
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DockerConfig *registry.DockerConfig
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}
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type ContainerConfig struct {
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Cmd []string
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Env map[string]string
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WorkingDir string
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Image string
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User string
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Privileged bool
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Volumes []Volume
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}
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type Volume struct {
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Path string
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TmpFS *VolumeTmpFS
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}
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type VolumeTmpFS struct {
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Size int64
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}
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type ExecConfig struct {
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Cmd []string
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Env map[string]string
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WorkingDir string
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User string
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AttachStdin bool
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Stdout io.Writer
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Stderr io.Writer
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Tty bool
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}
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func toolboxExecPath(toolboxDir string, arch types.Arch) (string, error) {
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toolboxPath := filepath.Join(toolboxDir, fmt.Sprintf("%s-linux-%s", toolboxPrefix, arch))
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_, err := os.Stat(toolboxPath)
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if err != nil {
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return "", errors.WithStack(err)
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}
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return toolboxPath, nil
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}
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