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woodpecker/server/procBuilder.go
2019-08-27 13:07:19 +02:00

365 lines
8.7 KiB
Go

// Copyright 2018 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.
package server
import (
"fmt"
"math/rand"
"net/url"
"sort"
"strings"
"github.com/drone/envsubst"
"github.com/laszlocph/woodpecker/cncd/pipeline/pipeline/backend"
"github.com/laszlocph/woodpecker/cncd/pipeline/pipeline/frontend"
"github.com/laszlocph/woodpecker/cncd/pipeline/pipeline/frontend/yaml"
"github.com/laszlocph/woodpecker/cncd/pipeline/pipeline/frontend/yaml/compiler"
"github.com/laszlocph/woodpecker/cncd/pipeline/pipeline/frontend/yaml/linter"
"github.com/laszlocph/woodpecker/cncd/pipeline/pipeline/frontend/yaml/matrix"
"github.com/laszlocph/woodpecker/model"
"github.com/laszlocph/woodpecker/remote"
)
// Takes the hook data and the yaml and returns in internal data model
type procBuilder struct {
Repo *model.Repo
Curr *model.Build
Last *model.Build
Netrc *model.Netrc
Secs []*model.Secret
Regs []*model.Registry
Link string
Yamls []*remote.FileMeta
Envs map[string]string
}
type buildItem struct {
Proc *model.Proc
Platform string
Labels map[string]string
DependsOn []string
RunsOn []string
Config *backend.Config
}
func (b *procBuilder) Build() ([]*buildItem, error) {
var items []*buildItem
sort.Sort(remote.ByName(b.Yamls))
pidSequence := 1
for _, y := range b.Yamls {
// matrix axes
axes, err := matrix.ParseString(string(y.Data))
if err != nil {
return nil, err
}
if len(axes) == 0 {
axes = append(axes, matrix.Axis{})
}
for _, axis := range axes {
proc := &model.Proc{
BuildID: b.Curr.ID,
PID: pidSequence,
PGID: pidSequence,
State: model.StatusPending,
Environ: axis,
Name: sanitizePath(y.Name),
}
metadata := metadataFromStruct(b.Repo, b.Curr, b.Last, proc, b.Link)
environ := b.environmentVariables(metadata, axis)
// substitute vars
substituted, err := b.envsubst_(string(y.Data), environ)
if err != nil {
return nil, err
}
// parse yaml pipeline
parsed, err := yaml.ParseString(substituted)
if err != nil {
return nil, err
}
// lint pipeline
lerr := linter.New(
linter.WithTrusted(b.Repo.IsTrusted),
).Lint(parsed)
if lerr != nil {
return nil, lerr
}
if !parsed.Branches.Match(b.Curr.Branch) {
proc.State = model.StatusSkipped
}
metadata.SetPlatform(parsed.Platform)
ir := b.toInternalRepresentation(parsed, environ, metadata, proc.ID)
if len(ir.Stages) == 0 {
continue
}
item := &buildItem{
Proc: proc,
Config: ir,
Labels: parsed.Labels,
DependsOn: parsed.DependsOn,
RunsOn: parsed.RunsOn,
Platform: metadata.Sys.Arch,
}
if item.Labels == nil {
item.Labels = map[string]string{}
}
items = append(items, item)
pidSequence++
}
}
items = filterItemsWithMissingDependencies(items)
return items, nil
}
func filterItemsWithMissingDependencies(items []*buildItem) []*buildItem {
itemsToRemove := make([]*buildItem, 0)
for _, item := range items {
for _, dep := range item.DependsOn {
if !containsItemWithName(dep, items) {
itemsToRemove = append(itemsToRemove, item)
}
}
}
if len(itemsToRemove) > 0 {
filtered := make([]*buildItem, 0)
for _, item := range items {
if !containsItemWithName(item.Proc.Name, itemsToRemove) {
filtered = append(filtered, item)
}
}
// Recursive to handle transitive deps
return filterItemsWithMissingDependencies(filtered)
}
return items
}
func containsItemWithName(name string, items []*buildItem) bool {
for _, item := range items {
if name == item.Proc.Name {
return true
}
}
return false
}
func (b *procBuilder) envsubst_(y string, environ map[string]string) (string, error) {
return envsubst.Eval(y, func(name string) string {
env := environ[name]
if strings.Contains(env, "\n") {
env = fmt.Sprintf("%q", env)
}
return env
})
}
func (b *procBuilder) environmentVariables(metadata frontend.Metadata, axis matrix.Axis) map[string]string {
environ := metadata.Environ()
for k, v := range metadata.EnvironDrone() {
environ[k] = v
}
for k, v := range axis {
environ[k] = v
}
return environ
}
func (b *procBuilder) toInternalRepresentation(parsed *yaml.Config, environ map[string]string, metadata frontend.Metadata, procID int64) *backend.Config {
var secrets []compiler.Secret
for _, sec := range b.Secs {
if !sec.Match(b.Curr.Event) {
continue
}
secrets = append(secrets, compiler.Secret{
Name: sec.Name,
Value: sec.Value,
Match: sec.Images,
})
}
var registries []compiler.Registry
for _, reg := range b.Regs {
registries = append(registries, compiler.Registry{
Hostname: reg.Address,
Username: reg.Username,
Password: reg.Password,
Email: reg.Email,
})
}
return compiler.New(
compiler.WithEnviron(environ),
compiler.WithEnviron(b.Envs),
compiler.WithEscalated(Config.Pipeline.Privileged...),
compiler.WithResourceLimit(Config.Pipeline.Limits.MemSwapLimit, Config.Pipeline.Limits.MemLimit, Config.Pipeline.Limits.ShmSize, Config.Pipeline.Limits.CPUQuota, Config.Pipeline.Limits.CPUShares, Config.Pipeline.Limits.CPUSet),
compiler.WithVolumes(Config.Pipeline.Volumes...),
compiler.WithNetworks(Config.Pipeline.Networks...),
compiler.WithLocal(false),
compiler.WithOption(
compiler.WithNetrc(
b.Netrc.Login,
b.Netrc.Password,
b.Netrc.Machine,
),
b.Repo.IsPrivate,
),
compiler.WithRegistry(registries...),
compiler.WithSecret(secrets...),
compiler.WithPrefix(
fmt.Sprintf(
"%d_%d",
procID,
rand.Int(),
),
),
compiler.WithProxy(),
compiler.WithWorkspaceFromURL("/drone", b.Repo.Link),
compiler.WithMetadata(metadata),
).Compile(parsed)
}
func setBuildStepsOnBuild(build *model.Build, buildItems []*buildItem) *model.Build {
var pidSequence int
for _, item := range buildItems {
build.Procs = append(build.Procs, item.Proc)
if pidSequence < item.Proc.PID {
pidSequence = item.Proc.PID
}
}
for _, item := range buildItems {
for _, stage := range item.Config.Stages {
var gid int
for _, step := range stage.Steps {
pidSequence++
if gid == 0 {
gid = pidSequence
}
proc := &model.Proc{
BuildID: build.ID,
Name: step.Alias,
PID: pidSequence,
PPID: item.Proc.PID,
PGID: gid,
State: model.StatusPending,
}
if item.Proc.State == model.StatusSkipped {
proc.State = model.StatusSkipped
}
build.Procs = append(build.Procs, proc)
}
}
}
return build
}
// return the metadata from the cli context.
func metadataFromStruct(repo *model.Repo, build, last *model.Build, proc *model.Proc, link string) frontend.Metadata {
host := link
uri, err := url.Parse(link)
if err == nil {
host = uri.Host
}
return frontend.Metadata{
Repo: frontend.Repo{
Name: repo.FullName,
Link: repo.Link,
Remote: repo.Clone,
Private: repo.IsPrivate,
Branch: repo.Branch,
},
Curr: frontend.Build{
Number: build.Number,
Parent: build.Parent,
Created: build.Created,
Started: build.Started,
Finished: build.Finished,
Status: build.Status,
Event: build.Event,
Link: build.Link,
Target: build.Deploy,
Commit: frontend.Commit{
Sha: build.Commit,
Ref: build.Ref,
Refspec: build.Refspec,
Branch: build.Branch,
Message: build.Message,
Author: frontend.Author{
Name: build.Author,
Email: build.Email,
Avatar: build.Avatar,
},
},
},
Prev: frontend.Build{
Number: last.Number,
Created: last.Created,
Started: last.Started,
Finished: last.Finished,
Status: last.Status,
Event: last.Event,
Link: last.Link,
Target: last.Deploy,
Commit: frontend.Commit{
Sha: last.Commit,
Ref: last.Ref,
Refspec: last.Refspec,
Branch: last.Branch,
Message: last.Message,
Author: frontend.Author{
Name: last.Author,
Email: last.Email,
Avatar: last.Avatar,
},
},
},
Job: frontend.Job{
Number: proc.PID,
Matrix: proc.Environ,
},
Sys: frontend.System{
Name: "drone",
Link: link,
Host: host,
Arch: "linux/amd64",
},
}
}
func sanitizePath(path string) string {
path = strings.TrimSuffix(path, ".yml")
path = strings.TrimPrefix(path, ".drone/")
path = strings.TrimPrefix(path, ".")
return path
}