harness-drone/datastore/bolt/build.go

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package bolt
import (
"bytes"
"encoding/binary"
"strconv"
"time"
"github.com/boltdb/bolt"
"github.com/drone/drone/common"
)
// Build gets the specified build number for the
// named repository and build number.
func (db *DB) Build(repo string, build int) (*common.Build, error) {
build_ := &common.Build{}
key := []byte(repo + "/" + strconv.Itoa(build))
err := db.View(func(t *bolt.Tx) error {
return get(t, bucketBuild, key, build_)
})
return build_, err
}
// BuildList gets a list of recent builds for the
// named repository.
func (db *DB) BuildList(repo string) ([]*common.Build, error) {
// TODO (bradrydzewski) we can do this more efficiently
var builds []*common.Build
build, err := db.BuildLast(repo)
if err == ErrKeyNotFound {
return builds, nil
} else if err != nil {
return nil, err
}
err = db.View(func(t *bolt.Tx) error {
pos := build.Number - 25
if pos < 1 {
pos = 1
}
for i := pos; i <= build.Number; i++ {
key := []byte(repo + "/" + strconv.Itoa(i))
build := &common.Build{}
err = get(t, bucketBuild, key, build)
if err != nil {
return err
}
builds = append(builds, build)
}
return nil
})
return builds, err
}
// BuildLast gets the last executed build for the
// named repository.
func (db *DB) BuildLast(repo string) (*common.Build, error) {
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key := []byte(repo)
build := &common.Build{}
err := db.View(func(t *bolt.Tx) error {
raw := t.Bucket(bucketBuildSeq).Get(key)
if raw == nil {
return ErrKeyNotFound
}
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num := binary.LittleEndian.Uint32(raw)
key = []byte(repo + "/" + strconv.FormatUint(uint64(num), 10))
return get(t, bucketBuild, key, build)
})
return build, err
}
// SetBuild inserts or updates a build for the named
// repository. The build number is incremented and
// assigned to the provided build.
func (db *DB) SetBuild(repo string, build *common.Build) error {
repokey := []byte(repo)
build.Updated = time.Now().UTC().Unix()
return db.Update(func(t *bolt.Tx) error {
if build.Number == 0 {
raw, err := raw(t, bucketBuildSeq, repokey)
var next_seq uint32
switch err {
case ErrKeyNotFound:
next_seq = 1
case nil:
next_seq = 1 + binary.LittleEndian.Uint32(raw)
default:
return err
}
// covert our seqno to raw value
raw = make([]byte, 4) // TODO(benschumacher) replace magic number 4 (uint32)
binary.LittleEndian.PutUint32(raw, next_seq)
err = t.Bucket(bucketBuildSeq).Put(repokey, raw)
if err != nil {
return err
}
// fill out the build structure
build.Number = int(next_seq)
build.Created = time.Now().UTC().Unix()
}
key := []byte(repo + "/" + strconv.Itoa(build.Number))
return update(t, bucketBuild, key, build)
})
}
// Status returns the status for the given repository
// and build number.
func (db *DB) Status(repo string, build int, status string) (*common.Status, error) {
status_ := &common.Status{}
key := []byte(repo + "/" + strconv.Itoa(build) + "/" + status)
err := db.Update(func(t *bolt.Tx) error {
return update(t, bucketBuildStatus, key, status)
})
return status_, err
}
// StatusList returned a list of all build statues for
// the given repository and build number.
func (db *DB) StatusList(repo string, build int) ([]*common.Status, error) {
// TODO (bradrydzewski) explore efficiency of cursor vs index
statuses := []*common.Status{}
err := db.View(func(tx *bolt.Tx) error {
c := tx.Bucket(bucketBuildStatus).Cursor()
prefix := []byte(repo + "/" + strconv.Itoa(build) + "/")
for k, v := c.Seek(prefix); bytes.HasPrefix(k, prefix); k, v = c.Next() {
status := &common.Status{}
if err := decode(v, status); err != nil {
return err
}
statuses = append(statuses, status)
}
return nil
})
return statuses, err
}
// SetStatus inserts a new build status for the
// named repository and build number. If the status already
// exists an error is returned.
func (db *DB) SetStatus(repo string, build int, status *common.Status) error {
key := []byte(repo + "/" + strconv.Itoa(build) + "/" + status.Context)
return db.Update(func(t *bolt.Tx) error {
return update(t, bucketBuildStatus, key, status)
})
}