drone-yaml/yaml/compiler/step.go

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// Copyright 2019 Drone IO, Inc.
//
// 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 compiler
import (
"strings"
"github.com/drone/drone-runtime/engine"
"github.com/drone/drone-yaml/yaml"
"github.com/drone/drone-yaml/yaml/compiler/image"
"github.com/drone/drone-yaml/yaml/compiler/internal/rand"
)
func createStep(spec *engine.Spec, src *yaml.Container) *engine.Step {
dst := &engine.Step{
Metadata: engine.Metadata{
UID: rand.String(),
Name: src.Name,
Namespace: spec.Metadata.Namespace,
Labels: map[string]string{
"io.drone.step.name": src.Name,
},
},
Detach: src.Detach,
DependsOn: src.DependsOn,
Devices: nil,
Docker: &engine.DockerStep{
Args: src.Command,
Command: src.Entrypoint,
DNS: src.DNS,
DNSSearch: src.DNSSearch,
ExtraHosts: src.ExtraHosts,
Image: image.Expand(src.Image),
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Network: src.Network,
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Networks: nil, // set in compiler.go
Ports: toPorts(src),
Privileged: src.Privileged,
PullPolicy: toPullPolicy(src),
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User: src.User,
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},
Envs: map[string]string{},
Files: nil, // set below
IgnoreErr: toIgnoreErr(src),
IgnoreStderr: false,
IgnoreStdout: false,
Resources: toResources(src),
RunPolicy: toRunPolicy(src),
Secrets: nil, // set below
Volumes: nil, // set below
WorkingDir: "", // set in compiler.go
}
// if the user is running a service container with
// no custom commands, we should revert back to the
// user-defined working directory, which may be empty.
if dst.Detach && len(src.Commands) == 0 {
dst.WorkingDir = src.WorkingDir
}
// appends the volumes to the container def.
for _, vol := range src.Volumes {
// the user should never be able to directly
// mount the docker socket. This should be
// restricted by the linter, but we place this
// check here just to be safe.
if vol.Name == "_docker_socket" {
continue
}
mount := &engine.VolumeMount{
Name: vol.Name,
Path: vol.MountPath,
}
dst.Volumes = append(dst.Volumes, mount)
}
// appends the environment variables to the
// container definition.
for key, value := range src.Environment {
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// fix https://github.com/drone/drone-yaml/issues/13
if value == nil {
continue
}
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if value.Secret != "" {
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sec := &engine.SecretVar{
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Name: value.Secret,
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Env: key,
}
dst.Secrets = append(dst.Secrets, sec)
} else {
dst.Envs[key] = value.Value
}
}
// appends the settings variables to the
// container definition.
for key, value := range src.Settings {
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// fix https://github.com/drone/drone-yaml/issues/13
if value == nil {
continue
}
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// all settings are passed to the plugin env
// variables, prefixed with PLUGIN_
key = "PLUGIN_" + strings.ToUpper(key)
// if the setting parameter is sources from the
// secret we create a secret enviornment variable.
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if value.Secret != "" {
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sec := &engine.SecretVar{
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Name: value.Secret,
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Env: key,
}
dst.Secrets = append(dst.Secrets, sec)
} else {
// else if the setting parameter is opaque
// we inject as a string-encoded environment
// variable.
dst.Envs[key] = encode(value.Value)
}
}
// if the step specifies shell commands we generate a
// script. The script is copied to the container at
// runtime (or mounted as a config map) and then executed
// as the entrypoint.
if len(src.Commands) > 0 {
switch spec.Platform.OS {
case "windows":
setupScriptWin(spec, dst, src)
default:
setupScript(spec, dst, src)
}
}
return dst
}
func createBuildStep(spec *engine.Spec, src *yaml.Container) *engine.Step {
dst := &engine.Step{
Metadata: engine.Metadata{
UID: rand.String(),
Name: src.Name,
Namespace: spec.Metadata.Namespace,
Labels: map[string]string{
"io.drone.step.name": src.Name,
},
},
Detach: src.Detach,
DependsOn: src.DependsOn,
Devices: nil,
Docker: &engine.DockerStep{
Args: []string{"--build"},
DNS: src.DNS,
Image: "drone/docker",
PullPolicy: engine.PullIfNotExists,
},
Envs: map[string]string{},
IgnoreErr: toIgnoreErr(src),
IgnoreStderr: false,
IgnoreStdout: false,
Resources: toResources(src),
RunPolicy: toRunPolicy(src),
}
// if v := src.Build.Args; len(v) > 0 {
// dst.Envs["DOCKER_BUILD_ARGS"] = strings.Join(v, ",")
// }
if v := src.Build.CacheFrom; len(v) > 0 {
dst.Envs["DOCKER_BUILD_CACHE_FROM"] = strings.Join(v, ",")
}
// if len(src.Build.Labels) > 0 {
// dst.Envs["DOCKER_BUILD_LABELS"] = strings.Join(v, ",")
// }
if v := src.Build.Dockerfile; v != "" {
dst.Envs["DOCKER_BUILD_DOCKERFILE"] = v
}
if v := src.Build.Context; v != "" {
dst.Envs["DOCKER_BUILD_CONTEXT"] = v
}
if v := src.Build.Image; v != "" {
alias := image.Trim(v) + ":" + dst.Metadata.UID
dst.Envs["DOCKER_BUILD_IMAGE"] = image.Expand(v)
dst.Envs["DOCKER_BUILD_IMAGE_ALIAS"] = image.Expand(alias)
}
dst.Volumes = append(dst.Volumes, &engine.VolumeMount{
Name: "_docker_socket",
Path: "/var/run/docker.sock",
})
return dst
}