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cloud_build_status.go
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cloud_build_status.go
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package metrics
import (
"context"
"encoding/json"
"fmt"
"log"
"strings"
"sync"
"time"
pubsub "cloud.google.com/go/pubsub/apiv1"
"github.com/bazelbuild/continuous-integration/metrics/data"
timestamp "github.com/golang/protobuf/ptypes/timestamp"
metricpb "google.golang.org/genproto/googleapis/api/metric"
monitoredres "google.golang.org/genproto/googleapis/api/monitoredres"
monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)
const (
cloudBuildBaseMetricType = "custom.googleapis.com/bazel/cloudbuild"
)
var (
buildSuccessState = "SUCCESS"
)
type buildResult struct {
ID string `json:"id"`
ProjectID string `json:"projectId"`
Status string `json:"status"`
FinishTime *time.Time `json:"finishTime"`
Source struct {
RepoSource struct {
RepoName string `json:"repoName"`
BranchName string `json:"branchName"`
} `json:"repoSource"`
} `json:"source"`
}
func (br *buildResult) toRow() (*cloudBuildStatusRow, error) {
if br.FinishTime == nil {
return nil, fmt.Errorf("build %s hasn't finished yet", br.ID)
}
src := br.Source.RepoSource
return &cloudBuildStatusRow{
ts: *br.FinishTime,
build: br.ID,
repo: src.RepoName,
branch: src.BranchName,
success: br.success(),
}, nil
}
func (br *buildResult) success() bool {
return br.Status == buildSuccessState
}
func (br *buildResult) finished() bool {
return br.FinishTime != nil
}
type CloudBuildStatus struct {
subscriber *pubsub.SubscriberClient
subscription string
columns []Column
mux sync.Mutex
results []*buildResult
errors []string
}
func (cbs *CloudBuildStatus) Name() string {
return "cloud_build_status"
}
func (cbs *CloudBuildStatus) Columns() []Column {
return cbs.columns
}
func (*CloudBuildStatus) Type() MetricType {
return TimeBasedMetric
}
func (*CloudBuildStatus) RelevantDelta() int {
return 2 * 24 * 60 * 60 // Two days in seconds
}
// CREATE TABLE cloud_build_status (timestamp DATETIME, build VARCHAR(255), source VARCHAR(255), success BOOL, PRIMARY KEY(timestamp, build));
func CreateCloudBuildStatus(ctx context.Context, projectID, subscriptionID string) (*CloudBuildStatus, error) {
subscriber, err := pubsub.NewSubscriberClient(ctx)
if err != nil {
return nil, err
}
columns := []Column{Column{"timestamp", true}, Column{"build", true}, Column{"source", false}, Column{"success", false}}
subscription := fmt.Sprintf("projects/%s/subscriptions/%s", projectID, subscriptionID)
results := make([]*buildResult, 0)
errors := make([]string, 0)
cbs := &CloudBuildStatus{
subscriber: subscriber,
subscription: subscription,
columns: columns,
results: results,
errors: errors,
}
go cbs.listen(ctx)
return cbs, nil
}
func (cbs *CloudBuildStatus) listen(ctx context.Context) {
req := pubsubpb.PullRequest{
Subscription: cbs.subscription,
MaxMessages: 10,
}
for {
res, err := cbs.subscriber.Pull(ctx, &req)
if err != nil {
cbs.recordError(err)
continue
}
for _, m := range res.ReceivedMessages {
if err := cbs.handleMessage(m.Message.Data); err != nil {
cbs.recordError(err)
}
err := cbs.subscriber.Acknowledge(ctx, &pubsubpb.AcknowledgeRequest{
Subscription: cbs.subscription,
AckIds: []string{m.AckId},
})
if err != nil {
cbs.recordError(err)
}
}
}
}
func (cbs *CloudBuildStatus) handleMessage(data []byte) error {
result := new(buildResult)
if err := json.Unmarshal(data, result); err != nil {
return fmt.Errorf("invalid JSON message: %v", err)
}
if result.finished() {
cbs.mux.Lock()
cbs.results = append(cbs.results, result)
cbs.mux.Unlock()
}
return nil
}
func (cbs *CloudBuildStatus) recordError(err error) {
cbs.mux.Lock()
cbs.errors = append(cbs.errors, err.Error())
cbs.mux.Unlock()
}
func (cbs *CloudBuildStatus) Collect() (data.DataSet, error) {
cbs.mux.Lock()
defer cbs.mux.Unlock()
if len(cbs.errors) > 0 {
err := fmt.Errorf("failed to collect data due to previous errors:\n%s", strings.Join(cbs.errors, "\n"))
cbs.errors = make([]string, 0)
return nil, err
}
result := &cloudBuildStatusSet{headers: GetColumnNames(cbs.columns)}
if len(cbs.results) > 0 {
for _, r := range cbs.results {
if row, err := r.toRow(); err != nil {
return nil, err
} else {
result.rows = append(result.rows, row)
}
}
cbs.results = make([]*buildResult, 0)
}
return result, nil
}
// TODO(fweikert): refactor Stackdriver code here and in platform_load
type cloudBuildStatusRow struct {
ts time.Time
repo string
branch string
build string
success bool
}
type cloudBuildStatusSet struct {
headers []string
rows []*cloudBuildStatusRow
}
func (s *cloudBuildStatusSet) GetData() *data.LegacyDataSet {
rawSet := data.CreateDataSet(s.headers)
for _, row := range s.rows {
source := fmt.Sprintf("%s/%s", row.repo, row.branch)
rawRow := []interface{}{row.ts, row.build, source, row.success}
rawSet.Data = append(rawSet.Data, rawRow)
}
return rawSet
}
func (s *cloudBuildStatusSet) CreateTimeSeriesRequest(projectID string) *monitoringpb.CreateTimeSeriesRequest {
series := make([]*monitoringpb.TimeSeries, len(s.rows))
for i, row := range s.rows {
series[i] = row.createTimeSeries()
}
return &monitoringpb.CreateTimeSeriesRequest{
Name: "projects/" + projectID,
TimeSeries: series,
}
}
func (r *cloudBuildStatusRow) createTimeSeries() *monitoringpb.TimeSeries {
ts := ×tamp.Timestamp{
Seconds: r.ts.Unix(),
}
t := fmt.Sprintf("%s/%s/%s", cloudBuildBaseMetricType, r.repo, r.branch)
t = strings.Replace(t, "-", "_", -1)
log.Printf("Publishing time series for metric '%s'\n", t)
return &monitoringpb.TimeSeries{
Metric: &metricpb.Metric{
Type: t,
},
Resource: &monitoredres.MonitoredResource{
Type: "global",
},
Points: []*monitoringpb.Point{{
Interval: &monitoringpb.TimeInterval{
StartTime: ts,
EndTime: ts,
},
Value: &monitoringpb.TypedValue{
Value: &monitoringpb.TypedValue_BoolValue{
BoolValue: r.success,
},
},
}},
}
}