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builder.go
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builder.go
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package aws
import (
"fmt"
"io"
"io/ioutil"
"os"
"sort"
"strings"
"time"
log "github.com/Sirupsen/logrus"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/codebuild"
"github.com/aws/aws-sdk-go/service/dynamodb"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/aws/aws-sdk-go/service/s3/s3manager"
pb "github.com/datacol-io/datacol/api/models"
"github.com/ejholmes/cloudwatch"
)
func (a *AwsCloud) ecrRepository(n string) string {
return fmt.Sprintf("%s-%s-repo", a.DeploymentName, n)
}
func (a *AwsCloud) codebuildProjectName(n string) string {
return fmt.Sprintf("%s-%s-code-builder", a.DeploymentName, n)
}
func (a *AwsCloud) dynamoBuilds() string {
return fmt.Sprintf("%s-builds", a.DeploymentName)
}
func (a *AwsCloud) codeBuildBucket() string {
return a.SettingBucket
}
func (a *AwsCloud) BuildGet(app, id string) (*pb.Build, error) {
req := &dynamodb.GetItemInput{
ConsistentRead: aws.Bool(true),
Key: map[string]*dynamodb.AttributeValue{
"id": {S: aws.String(id)},
},
TableName: aws.String(a.dynamoBuilds()),
}
res, err := a.dynamodb().GetItem(req)
if err != nil {
return nil, err
}
if res.Item == nil {
return nil, fmt.Errorf("no build found by id: %s", id)
}
build := a.buildFromItem(res.Item)
if build.Status == "IN_PROGRESS" {
rb, err := a.fetchRemoteBuild(build.RemoteId)
if err != nil {
return nil, err
}
status := rb.BuildStatus
if status != nil && *status != build.Status {
build.Status = *status
a.buildSave(build)
}
}
return build, nil
}
func (a *AwsCloud) BuildDelete(app, id string) error {
return nil
}
func (a *AwsCloud) BuildList(app string, limit int) (pb.Builds, error) {
req := &dynamodb.ScanInput{
ConsistentRead: aws.Bool(true),
TableName: aws.String(a.dynamoBuilds()),
ExpressionAttributeValues: map[string]*dynamodb.AttributeValue{
":app": {S: aws.String(app)},
},
FilterExpression: aws.String("app=:app"),
}
res, err := a.dynamodb().Scan(req)
if err != nil {
return nil, err
}
builds := make(pb.Builds, len(res.Items))
for i, item := range res.Items {
builds[i] = a.buildFromItem(item)
}
sort.Slice(builds, func(i, j int) bool {
return builds[i].CreatedAt < builds[j].CreatedAt
})
return builds, nil
}
func (a *AwsCloud) BuildImport(id, gzipPath string) error {
build, err := a.BuildGet("", id)
if err != nil {
return err
}
app := build.App
// We need to convert gzip to zip format since AWS codebuild only
// supports zip file for s3 based source
log.Debugf("converting gzip to zip of %s", gzipPath)
zipPath, err := convertGzipToZip(app, gzipPath)
if err != nil {
return fmt.Errorf("converting gzip to zip archive. err: %v", err)
}
defer os.RemoveAll(zipPath)
reader, err := os.Open(zipPath)
if err != nil {
return fmt.Errorf("reading tempfile err: %v", err)
}
defer reader.Close()
log.Debugf("Uploading to s3 from %s", zipPath)
uploader := s3manager.NewUploaderWithClient(a.s3())
if _, err = uploader.Upload(&s3manager.UploadInput{
Body: reader,
Bucket: aws.String(a.codeBuildBucket()),
Key: aws.String(app + "/source.zip"),
}, func(u *s3manager.Uploader) {
u.PartSize = 64 * 1024 * 1024 // 64MB per part
}); err != nil {
return fmt.Errorf("uploading source to s3 err: %v", err)
}
log.Debug("OK \n")
return a.startBuild(build, &pb.CreateBuildOptions{})
}
func (a *AwsCloud) BuildCreate(app string, req *pb.CreateBuildOptions) (*pb.Build, error) {
Id := generateId("B", 5)
build := &pb.Build{
App: app,
Id: Id,
Version: req.Version,
Procfile: req.Procfile,
Status: pb.StatusCreated,
CreatedAt: timestampNow(),
}
//FIXME: If version is not blank, we can trigger the build. this is a hack as of now and
// should be replaced with better build API
// Version os GIT COMMIT hash
if req.Version != "" {
return build, a.startBuild(build, req)
}
return build, a.buildSave(build)
}
func (a *AwsCloud) BuildLogs(app, id string, index int) (int, []string, error) {
rb, err := a.fetchRemoteBuild(id)
if err != nil {
return 0, nil, err
}
return a.buildLogs(a.s3(), rb.Logs.GroupName, rb.Logs.StreamName, id, index)
}
func (a *AwsCloud) BuildLogsStream(id string) (io.Reader, error) {
fmt.Print("waiting for cloudwatch logstream (1s)")
var rb *codebuild.Build
bb, err := a.BuildGet("", id)
if err != nil {
return nil, err
}
if bb.RemoteId == "" {
return nil, fmt.Errorf("No build process found for Id=%s", bb.Id)
}
for {
b, err := a.fetchRemoteBuild(bb.RemoteId)
if err != nil {
return nil, fmt.Errorf("fetching build err: %v", err)
}
rb = b
if rb.Logs != nil && rb.Logs.StreamName != nil {
break
}
fmt.Print(".")
time.Sleep(1 * time.Second)
}
fmt.Print(" OK\n")
log.Debugf("Will start streaming from stream: %s", *rb.Logs.StreamName)
return cloudwatch.NewGroup(*rb.Logs.GroupName, a.cloudwatchlogs()).Open(*rb.Logs.StreamName)
}
func (a *AwsCloud) buildFromItem(item map[string]*dynamodb.AttributeValue) *pb.Build {
return &pb.Build{
Id: coalesce(item["id"], ""),
App: coalesce(item["app"], ""),
Status: coalesce(item["status"], ""),
Version: coalesce(item["version"], ""),
RemoteId: coalesce(item["remote_id"], ""),
Procfile: coalesceBytes(item["procfile"]),
CreatedAt: int32(coalesceInt(item["created_at"], 0)),
}
}
func (a *AwsCloud) buildSave(b *pb.Build) error {
req := &dynamodb.PutItemInput{
Item: map[string]*dynamodb.AttributeValue{
"id": {S: aws.String(b.Id)},
"app": {S: aws.String(b.App)},
},
TableName: aws.String(a.dynamoBuilds()),
}
if b.Status != "" {
req.Item["status"] = &dynamodb.AttributeValue{S: aws.String(b.Status)}
}
if b.Version != "" {
req.Item["version"] = &dynamodb.AttributeValue{S: aws.String(b.Version)}
}
if b.RemoteId != "" {
req.Item["remote_id"] = &dynamodb.AttributeValue{S: aws.String(b.RemoteId)}
}
if len(b.Procfile) > 0 {
req.Item["procfile"] = &dynamodb.AttributeValue{B: b.Procfile}
}
if b.CreatedAt > 0 {
req.Item["created_at"] = &dynamodb.AttributeValue{
N: aws.String(fmt.Sprintf("%d", b.CreatedAt)),
}
}
_, err := a.dynamodb().PutItem(req)
return err
}
func (a *AwsCloud) fetchRemoteBuild(id string) (*codebuild.Build, error) {
out, err := a.codebuild().BatchGetBuilds(&codebuild.BatchGetBuildsInput{
Ids: []*string{aws.String(id)},
})
if err != nil {
return nil, fmt.Errorf("fetching cloud builds err: %v", err)
}
for _, b := range out.Builds {
if b.Id != nil && *b.Id == id {
return b, nil
}
}
return nil, fmt.Errorf("no build found by id: %s", id)
}
func (a *AwsCloud) buildLogs(svc *s3.S3, bucket, key *string, bid string, index int) (int, []string, error) {
out, err := svc.GetObject(&s3.GetObjectInput{Bucket: bucket, Key: key})
if err != nil {
return 0, nil, err
}
defer out.Body.Close()
lines := []string{}
body, err := ioutil.ReadAll(out.Body)
if err != nil {
return index, lines, err
}
parts := strings.Split(string(body), "\n")
for _, line := range parts[index:] {
if len(line) > 0 && line != "\n" {
lines = append(lines, line)
}
}
return len(parts) - 1, lines, nil
}
func (a *AwsCloud) startBuild(build *pb.Build, req *pb.CreateBuildOptions) error {
log.Infof("Starting the build ...")
ret, err := a.codebuild().StartBuild(&codebuild.StartBuildInput{
ProjectName: aws.String(a.codebuildProjectName(build.App)),
SourceVersion: aws.String(req.Version),
EnvironmentVariablesOverride: []*codebuild.EnvironmentVariable{
{
Name: aws.String("APP"),
Value: aws.String(build.App),
}, {
Name: aws.String("IMAGE_TAG"),
Value: aws.String(build.Id),
},
},
})
if err != nil {
return err
}
build.RemoteId = *ret.Build.Id
build.Status = *ret.Build.BuildStatus
log.Debugf("Persisting build: %+v", build)
return a.buildSave(build)
}