agola/internal/services/runservice/readdb/readdb.go

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// Copyright 2019 Sorint.lab
//
// 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 readdb
import (
"context"
"database/sql"
"encoding/json"
"fmt"
"io"
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"os"
"path"
"path/filepath"
"sort"
"strings"
"sync"
"time"
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"agola.io/agola/internal/datamanager"
"agola.io/agola/internal/db"
"agola.io/agola/internal/etcd"
"agola.io/agola/internal/objectstorage"
"agola.io/agola/internal/sequence"
"agola.io/agola/internal/services/runservice/common"
"agola.io/agola/internal/services/runservice/store"
"agola.io/agola/internal/util"
"agola.io/agola/services/runservice/types"
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sq "github.com/Masterminds/squirrel"
etcdclientv3 "go.etcd.io/etcd/clientv3"
etcdclientv3rpc "go.etcd.io/etcd/etcdserver/api/v3rpc/rpctypes"
"go.etcd.io/etcd/mvcc/mvccpb"
"go.uber.org/zap"
errors "golang.org/x/xerrors"
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)
const (
paginationSize = 100
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)
var (
// Use postgresql $ placeholder. It'll be converted to ? from the provided db functions
sb = sq.StatementBuilder.PlaceholderFormat(sq.Dollar)
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// readdb tables based on etcd data
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revisionSelect = sb.Select("revision").From("revision")
revisionInsert = sb.Insert("revision").Columns("revision")
//runSelect = sb.Select("id", "grouppath", "phase", "result").From("run")
runInsert = sb.Insert("run").Columns("id", "grouppath", "phase", "result")
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rundataInsert = sb.Insert("rundata").Columns("id", "data")
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//runeventSelect = sb.Select("data").From("runevent")
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runeventInsert = sb.Insert("runevent").Columns("sequence", "data")
changegrouprevisionSelect = sb.Select("id, revision").From("changegrouprevision")
changegrouprevisionInsert = sb.Insert("changegrouprevision").Columns("id", "revision")
// readdb tables based on objectstorage data
//revisionOSTSelect = sb.Select("revision").From("revision_ost")
revisionOSTInsert = sb.Insert("revision_ost").Columns("revision")
//runOSTSelect = sb.Select("id", "grouppath", "phase", "result").From("run_ost")
runOSTInsert = sb.Insert("run_ost").Columns("id", "grouppath", "phase", "result")
rundataOSTInsert = sb.Insert("rundata_ost").Columns("id", "data")
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committedwalsequenceOSTSelect = sb.Select("seq").From("committedwalsequence_ost")
committedwalsequenceOSTInsert = sb.Insert("committedwalsequence_ost").Columns("seq")
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changegrouprevisionOSTSelect = sb.Select("id, revision").From("changegrouprevision_ost")
changegrouprevisionOSTInsert = sb.Insert("changegrouprevision_ost").Columns("id", "revision")
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runcounterOSTSelect = sb.Select("groupid", "counter").From("runcounter_ost")
runcounterOSTInsert = sb.Insert("runcounter_ost").Columns("groupid", "counter")
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)
type ReadDB struct {
log *zap.SugaredLogger
dataDir string
e *etcd.Store
rdb *db.DB
ost *objectstorage.ObjStorage
dm *datamanager.DataManager
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Initialized bool
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initLock sync.Mutex
// dbWriteLock is used to have only one concurrent write transaction or sqlite
// will return a deadlock error (since we are using the unlock/notify api) if
// two write transactions acquire a lock on each other (we cannot specificy
// that a transaction will be a write tx so it'll start as a read tx, can
// acquire a lock on another read tx, when both become write tx the deadlock
// detector will return an error)
dbWriteLock sync.Mutex
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}
func NewReadDB(ctx context.Context, logger *zap.Logger, dataDir string, e *etcd.Store, ost *objectstorage.ObjStorage, dm *datamanager.DataManager) (*ReadDB, error) {
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if err := os.MkdirAll(dataDir, 0770); err != nil {
return nil, err
}
readDB := &ReadDB{
log: logger.Sugar(),
e: e,
dataDir: dataDir,
ost: ost,
dm: dm,
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}
return readDB, nil
}
func (r *ReadDB) SetInitialized(initialized bool) {
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r.initLock.Lock()
r.Initialized = initialized
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r.initLock.Unlock()
}
func (r *ReadDB) IsInitialized() bool {
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r.initLock.Lock()
defer r.initLock.Unlock()
return r.Initialized
}
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// Initialize populates the readdb with the current etcd data and save the
// revision to then feed it with the etcd events
func (r *ReadDB) Initialize(ctx context.Context) error {
if err := r.ResetDB(ctx); err != nil {
return errors.Errorf("failed to reset db: %w", err)
}
if err := r.SyncObjectStorage(ctx); err != nil {
return errors.Errorf("error syncing objectstorage db: %w", err)
}
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if err := r.SyncRDB(ctx); err != nil {
return errors.Errorf("error syncing run db: %w", err)
}
return nil
}
func (r *ReadDB) ResetDB(ctx context.Context) error {
// TODO(sgotti) this needs to be protected by a mutex
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if r.rdb != nil {
r.rdb.Close()
}
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// drop rdb
if err := os.Remove(filepath.Join(r.dataDir, "db")); err != nil {
return err
}
rdb, err := db.NewDB(db.Sqlite3, filepath.Join(r.dataDir, "db"))
if err != nil {
return err
}
// populate readdb
if err := rdb.Create(ctx, Stmts); err != nil {
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return err
}
r.rdb = rdb
return nil
}
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func (r *ReadDB) SyncRDB(ctx context.Context) error {
err := r.rdb.Do(ctx, func(tx *db.Tx) error {
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// Do pagination to limit the number of keys per request
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var revision int64
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key := common.EtcdRunsDir
var continuation *etcd.ListPagedContinuation
for {
listResp, err := r.e.ListPaged(ctx, key, revision, paginationSize, continuation)
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if err != nil {
return err
}
resp := listResp.Resp
continuation = listResp.Continuation
if revision == 0 {
revision = resp.Header.Revision
}
for _, kv := range resp.Kvs {
var run *types.Run
if err := json.Unmarshal(kv.Value, &run); err != nil {
return err
}
if err := insertRun(tx, run, kv.Value); err != nil {
return err
}
}
if !listResp.HasMore {
break
}
}
// sync changegroups, use the same revision of previous operations
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key = common.EtcdChangeGroupsDir
continuation = nil
for {
listResp, err := r.e.ListPaged(ctx, key, revision, paginationSize, continuation)
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if err != nil {
return err
}
resp := listResp.Resp
continuation = listResp.Continuation
for _, kv := range resp.Kvs {
changegroupID := path.Base(string(kv.Key))
if err := insertChangeGroupRevision(tx, changegroupID, kv.ModRevision); err != nil {
return err
}
}
if !listResp.HasMore {
break
}
}
if err := insertRevision(tx, revision); err != nil {
return err
}
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return nil
})
return err
}
func (r *ReadDB) Run(ctx context.Context) error {
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if r.rdb != nil {
r.rdb.Close()
}
rdb, err := db.NewDB(db.Sqlite3, filepath.Join(r.dataDir, "db"))
if err != nil {
return err
}
r.rdb = rdb
// populate readdb
if err := r.rdb.Create(ctx, Stmts); err != nil {
return err
}
revision, err := r.GetRevision(ctx)
if err != nil {
return err
}
if revision == 0 {
for {
err := r.Initialize(ctx)
if err == nil {
break
}
r.log.Errorf("initialize err: %+v", err)
sleepCh := time.NewTimer(1 * time.Second).C
select {
case <-ctx.Done():
return nil
case <-sleepCh:
}
}
}
r.SetInitialized(true)
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for {
for {
initialized := r.IsInitialized()
if initialized {
break
}
err := r.Initialize(ctx)
if err == nil {
r.SetInitialized(true)
break
}
r.log.Errorf("initialize err: %+v", err)
sleepCh := time.NewTimer(1 * time.Second).C
select {
case <-ctx.Done():
return nil
case <-sleepCh:
}
}
errCh := make(chan error, 2)
hctx, cancel := context.WithCancel(ctx)
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wg := &sync.WaitGroup{}
wg.Add(1)
go func() {
r.log.Infof("starting handleEvents")
if err := r.handleEvents(hctx); err != nil {
r.log.Errorf("handleEvents err: %+v", err)
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errCh <- err
}
wg.Done()
}()
wg.Add(1)
go func() {
r.log.Infof("starting handleEventsOST")
if err := r.handleEventsOST(hctx); err != nil {
r.log.Errorf("handleEventsOST err: %+v", err)
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errCh <- err
}
wg.Done()
}()
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select {
case <-ctx.Done():
r.log.Infof("readdb exiting")
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cancel()
return nil
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case <-errCh:
// cancel context and wait for the all the goroutines to exit
cancel()
wg.Wait()
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}
sleepCh := time.NewTimer(1 * time.Second).C
select {
case <-ctx.Done():
return nil
case <-sleepCh:
}
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}
}
func (r *ReadDB) handleEvents(ctx context.Context) error {
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var revision int64
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var lastRuns []*RunData
err := r.rdb.Do(ctx, func(tx *db.Tx) error {
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var err error
revision, err = r.getRevision(tx)
if err != nil {
return err
}
lastRuns, err = r.GetActiveRuns(tx, nil, true, nil, nil, "", 1, types.SortOrderDesc)
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return err
})
if err != nil {
return err
}
runSequence, _, err := sequence.CurSequence(ctx, r.e, common.EtcdRunSequenceKey)
if err != nil {
return err
}
var lastRun *types.Run
if len(lastRuns) > 0 {
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lastRun = lastRuns[0].Run
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}
if lastRun != nil {
if runSequence == nil {
r.SetInitialized(false)
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return errors.Errorf("no runsequence in etcd, reinitializing.")
}
lastRunSequence, err := sequence.Parse(lastRun.ID)
if err != nil {
return err
}
// check that the run sequence epoch isn't different than the current one (this means etcd
// has been reset, or worst, restored from a backup or manually deleted)
if runSequence.Epoch != lastRunSequence.Epoch {
r.SetInitialized(false)
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return errors.Errorf("last run epoch %d is different than current epoch in etcd %d, reinitializing.", lastRunSequence.Epoch, runSequence.Epoch)
}
}
wctx, cancel := context.WithCancel(ctx)
defer cancel()
wctx = etcdclientv3.WithRequireLeader(wctx)
wch := r.e.Watch(wctx, common.EtcdSchedulerBaseDir+"/", revision+1)
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for wresp := range wch {
if wresp.Canceled {
err = wresp.Err()
if err == etcdclientv3rpc.ErrCompacted {
r.log.Errorf("required events already compacted, reinitializing readdb")
r.SetInitialized(false)
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}
return errors.Errorf("watch error: %w", err)
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}
// a single transaction for every response (every response contains all the
// events happened in an etcd revision).
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r.dbWriteLock.Lock()
err = r.rdb.Do(ctx, func(tx *db.Tx) error {
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for _, ev := range wresp.Events {
if err := r.handleEvent(tx, ev, &wresp); err != nil {
return err
}
if err := insertRevision(tx, ev.Kv.ModRevision); err != nil {
return err
}
}
return nil
})
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r.dbWriteLock.Unlock()
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if err != nil {
return err
}
}
return nil
}
func (r *ReadDB) handleEvent(tx *db.Tx, ev *etcdclientv3.Event, wresp *etcdclientv3.WatchResponse) error {
r.log.Debugf("event: %s %q : %q\n", ev.Type, ev.Kv.Key, ev.Kv.Value)
key := string(ev.Kv.Key)
switch {
case strings.HasPrefix(key, common.EtcdRunsDir+"/"):
return r.handleRunEvent(tx, ev, wresp)
case strings.HasPrefix(key, common.EtcdChangeGroupsDir+"/"):
return r.handleChangeGroupEvent(tx, ev, wresp)
case key == common.EtcdRunEventKey:
return r.handleRunsEventEvent(tx, ev, wresp)
default:
return nil
}
}
func (r *ReadDB) handleRunEvent(tx *db.Tx, ev *etcdclientv3.Event, wresp *etcdclientv3.WatchResponse) error {
switch ev.Type {
case mvccpb.PUT:
var run *types.Run
if err := json.Unmarshal(ev.Kv.Value, &run); err != nil {
return errors.Errorf("failed to unmarshal run: %w", err)
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}
return insertRun(tx, run, ev.Kv.Value)
case mvccpb.DELETE:
runID := path.Base(string(ev.Kv.Key))
if _, err := tx.Exec("delete from run where id = $1", runID); err != nil {
return errors.Errorf("failed to delete run: %w", err)
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}
// Run has been deleted from etcd, this means that it was stored in the objectstorage
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// TODO(sgotti) this is here just to avoid a window where the run is not in
// run table and in the run_os table but should be changed/removed when we'll
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// implement run removal
run, err := store.OSTGetRun(r.dm, runID)
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if err != nil {
return err
}
return r.insertRunOST(tx, run, []byte{})
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}
return nil
}
func (r *ReadDB) handleRunsEventEvent(tx *db.Tx, ev *etcdclientv3.Event, wresp *etcdclientv3.WatchResponse) error {
switch ev.Type {
case mvccpb.PUT:
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var runEvent *types.RunEvent
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if err := json.Unmarshal(ev.Kv.Value, &runEvent); err != nil {
return errors.Errorf("failed to unmarshal run: %w", err)
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}
// poor man insert or update that works because transaction isolation level is serializable
if _, err := tx.Exec("delete from runevent where sequence = $1", runEvent.Sequence); err != nil {
return errors.Errorf("failed to delete run: %w", err)
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}
q, args, err := runeventInsert.Values(runEvent.Sequence, ev.Kv.Value).ToSql()
if err != nil {
return errors.Errorf("failed to build query: %w", err)
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}
if _, err = tx.Exec(q, args...); err != nil {
return err
}
}
return nil
}
func (r *ReadDB) handleChangeGroupEvent(tx *db.Tx, ev *etcdclientv3.Event, wresp *etcdclientv3.WatchResponse) error {
changegroupID := path.Base(string(ev.Kv.Key))
switch ev.Type {
case mvccpb.PUT:
return insertChangeGroupRevision(tx, changegroupID, ev.Kv.ModRevision)
case mvccpb.DELETE:
if _, err := tx.Exec("delete from changegrouprevision where id = $1", changegroupID); err != nil {
return errors.Errorf("failed to delete change group revision: %w", err)
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}
}
return nil
}
func (r *ReadDB) SyncObjectStorage(ctx context.Context) error {
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// get the last committed storage wal sequence saved in the rdb
curWalSeq := ""
err := r.rdb.Do(ctx, func(tx *db.Tx) error {
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var err error
curWalSeq, err = r.GetCommittedWalSequenceOST(tx)
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if err != nil {
return err
}
return nil
})
if err != nil {
return err
}
lastCommittedStorageWal, _, err := r.dm.LastCommittedStorageWal(ctx)
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if err != nil {
return err
}
doFullSync := false
if curWalSeq == "" {
doFullSync = true
r.log.Warn("no startWalSeq in db, doing a full sync")
} else {
ok, err := r.dm.HasOSTWal(curWalSeq)
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if err != nil {
return err
}
if !ok {
r.log.Warnf("no wal with seq %q in objectstorage, doing a full sync", curWalSeq)
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doFullSync = true
}
// if the epoch of the wals has changed this means etcd has been reset. If so
// we should do a full resync since we are saving in the rdb also data that
// was not yet committed to objectstorage so we should have the rdb ahead of
// the current objectstorage data
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// TODO(sgotti) improve this to avoid doing a full resync
curWalSequence, err := sequence.Parse(curWalSeq)
if err != nil {
return err
}
curWalEpoch := curWalSequence.Epoch
lastCommittedStorageWalSequence, err := sequence.Parse(lastCommittedStorageWal)
if err != nil {
return err
}
if curWalEpoch != lastCommittedStorageWalSequence.Epoch {
r.log.Warnf("current rdb wal sequence epoch %d different than new wal sequence epoch %d, doing a full sync", curWalEpoch, lastCommittedStorageWalSequence.Epoch)
doFullSync = true
}
}
if doFullSync {
r.log.Infof("doing a full sync from dump")
if err := r.ResetDB(ctx); err != nil {
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return err
}
var err error
curWalSeq, err = r.SyncFromDump(ctx)
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if err != nil {
return err
}
}
r.log.Debugf("startWalSeq: %s", curWalSeq)
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// Sync from wals
// sync from objectstorage until the current known lastCommittedStorageWal in etcd
// since wals are first committed to objectstorage and then in etcd we would like to
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// avoid to store in rdb something that is not yet marked as committedstorage
// in etcd
curWalSeq, err = r.SyncFromWals(ctx, curWalSeq, lastCommittedStorageWal)
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if err != nil {
return errors.Errorf("failed to sync from wals: %w", err)
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}
// Get the first available wal from etcd and check that our current walseq
// from wals on objectstorage is >=
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// if not (this happens when syncFromWals takes some time and in the meantime
// many new wals are written, the next sync should be faster and able to continue
firstAvailableWalData, revision, err := r.dm.FirstAvailableWalData(ctx)
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if err != nil {
return errors.Errorf("failed to get first available wal data: %w", err)
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}
r.log.Debugf("firstAvailableWalData: %s", util.Dump(firstAvailableWalData))
r.log.Debugf("revision: %d", revision)
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if firstAvailableWalData == nil {
return errors.Errorf("no wal data in etcd")
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}
if curWalSeq < firstAvailableWalData.WalSequence {
return errors.Errorf("current applied wal seq %q is smaller than the first available wal in etcd %q", curWalSeq, firstAvailableWalData.WalSequence)
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}
r.log.Infof("syncing from wals")
err = r.rdb.Do(ctx, func(tx *db.Tx) error {
if err := insertRevisionOST(tx, revision); err != nil {
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return err
}
// use the same revision as previous operation
for walElement := range r.dm.ListEtcdWals(ctx, revision) {
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if walElement.Err != nil {
return walElement.Err
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}
if walElement.WalData.WalSequence <= curWalSeq {
continue
}
// update readdb only when the wal has been committed to etcd
if walElement.WalData.WalStatus != datamanager.WalStatusCommitted {
return nil
}
if err := r.insertCommittedWalSequenceOST(tx, walElement.WalData.WalSequence); err != nil {
return err
}
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r.log.Debugf("applying wal to db")
if err := r.applyWal(tx, walElement.WalData.WalDataFileID); err != nil {
return err
}
}
// sync changegroups, use the same revision of previous operations
changeGroupsRevisions, err := r.dm.ListEtcdChangeGroups(ctx, revision)
if err != nil {
return err
}
for changeGroupID, changeGroupRevision := range changeGroupsRevisions {
if err := r.insertChangeGroupRevisionOST(tx, changeGroupID, changeGroupRevision); err != nil {
return err
}
}
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return nil
})
return err
}
func (r *ReadDB) SyncFromDump(ctx context.Context) (string, error) {
dumpIndex, err := r.dm.GetLastDataStatus()
if err != nil && err != objectstorage.ErrNotExist {
return "", err
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}
if err == objectstorage.ErrNotExist {
return "", nil
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}
for dataType, files := range dumpIndex.Files {
for _, file := range files {
dumpf, err := r.ost.ReadObject(r.dm.DataFilePath(dataType, file.ID))
if err != nil {
return "", err
}
dumpEntries := []*datamanager.DataEntry{}
dec := json.NewDecoder(dumpf)
for {
var de *datamanager.DataEntry
err := dec.Decode(&de)
if err == io.EOF {
// all done
break
}
if err != nil {
dumpf.Close()
return "", err
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}
dumpEntries = append(dumpEntries, de)
}
dumpf.Close()
err = r.rdb.Do(ctx, func(tx *db.Tx) error {
for _, de := range dumpEntries {
action := &datamanager.Action{
ActionType: datamanager.ActionTypePut,
ID: de.ID,
DataType: dataType,
Data: de.Data,
}
if err := r.applyAction(tx, action); err != nil {
return err
}
}
return nil
})
if err != nil {
return "", err
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}
}
}
err = r.rdb.Do(ctx, func(tx *db.Tx) error {
if err := r.insertCommittedWalSequenceOST(tx, dumpIndex.WalSequence); err != nil {
return err
}
return nil
})
if err != nil {
return "", err
}
return dumpIndex.WalSequence, nil
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}
func (r *ReadDB) SyncFromWals(ctx context.Context, startWalSeq, endWalSeq string) (string, error) {
insertfunc := func(walFiles []*datamanager.WalFile) error {
err := r.rdb.Do(ctx, func(tx *db.Tx) error {
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for _, walFile := range walFiles {
header, err := r.dm.ReadWal(walFile.WalSequence)
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if err != nil {
return err
}
if err := r.insertCommittedWalSequenceOST(tx, walFile.WalSequence); err != nil {
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return err
}
if err := r.applyWal(tx, header.WalDataFileID); err != nil {
return err
}
}
return nil
})
return err
}
lastWalSeq := startWalSeq
walFiles := []*datamanager.WalFile{}
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count := 0
doneCh := make(chan struct{})
defer close(doneCh)
for walFile := range r.dm.ListOSTWals(startWalSeq) {
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if walFile.Err != nil {
return "", walFile.Err
}
walFiles = append(walFiles, walFile)
lastWalSeq = walFile.WalSequence
if count > 100 {
if err := insertfunc(walFiles); err != nil {
return "", err
}
count = 0
walFiles = []*datamanager.WalFile{}
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} else {
count++
}
}
if err := insertfunc(walFiles); err != nil {
return "", err
}
return lastWalSeq, nil
}
func (r *ReadDB) handleEventsOST(ctx context.Context) error {
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var revision int64
err := r.rdb.Do(ctx, func(tx *db.Tx) error {
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err := tx.QueryRow("select revision from revision order by revision desc limit 1").Scan(&revision)
if err != nil {
if err == sql.ErrNoRows {
revision = 0
} else {
return err
}
}
return nil
})
if err != nil {
return err
}
wctx, cancel := context.WithCancel(ctx)
defer cancel()
r.log.Debugf("revision: %d", revision)
wch := r.dm.Watch(wctx, revision+1)
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for we := range wch {
r.log.Debugf("we: %s", util.Dump(we))
if we.Err != nil {
err := we.Err
if err == datamanager.ErrCompacted {
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r.log.Warnf("required events already compacted, reinitializing readdb")
r.Initialized = false
return nil
}
return errors.Errorf("watch error: %w", err)
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}
// a single transaction for every response (every response contains all the
// events happened in an etcd revision).
r.dbWriteLock.Lock()
err = r.rdb.Do(ctx, func(tx *db.Tx) error {
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// if theres a wal seq epoch change something happened to etcd, usually (if
// the user hasn't messed up with etcd keys) this means etcd has been reset
// in such case we should resync from the objectstorage state to ensure we
// apply all the wal marked as committedstorage (since they could have been
// lost from etcd)
curWalSeq, err := r.GetCommittedWalSequenceOST(tx)
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if err != nil {
return err
}
r.log.Debugf("curWalSeq: %q", curWalSeq)
if curWalSeq != "" && we.WalData != nil {
curWalSequence, err := sequence.Parse(curWalSeq)
if err != nil {
return err
}
curWalEpoch := curWalSequence.Epoch
weWalSequence, err := sequence.Parse(we.WalData.WalSequence)
if err != nil {
return err
}
r.log.Debugf("we.WalData.WalSequence: %q", we.WalData.WalSequence)
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weWalEpoch := weWalSequence.Epoch
if curWalEpoch != weWalEpoch {
r.Initialized = false
return errors.Errorf("current rdb wal sequence epoch %d different than new wal sequence epoch %d, resyncing from objectstorage", curWalEpoch, weWalEpoch)
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}
}
if err := r.handleEventOST(tx, we); err != nil {
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return err
}
if err := insertRevisionOST(tx, we.Revision); err != nil {
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return err
}
return nil
})
r.dbWriteLock.Unlock()
if err != nil {
return err
}
}
return nil
}
func (r *ReadDB) applyWal(tx *db.Tx, walDataFileID string) error {
walFile, err := r.dm.ReadWalData(walDataFileID)
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if err != nil {
return errors.Errorf("cannot read wal data file %q: %w", walDataFileID, err)
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}
defer walFile.Close()
dec := json.NewDecoder(walFile)
for {
var action *datamanager.Action
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err := dec.Decode(&action)
if err == io.EOF {
// all done
break
}
if err != nil {
return errors.Errorf("failed to decode wal file: %w", err)
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}
if err := r.applyAction(tx, action); err != nil {
return err
}
}
return nil
}
func (r *ReadDB) applyAction(tx *db.Tx, action *datamanager.Action) error {
r.log.Debugf("action: dataType: %s, ID: %s", action.DataType, action.ID)
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switch action.ActionType {
case datamanager.ActionTypePut:
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switch action.DataType {
case string(common.DataTypeRun):
var run *types.Run
if err := json.Unmarshal(action.Data, &run); err != nil {
return err
}
if err := r.insertRunOST(tx, run, action.Data); err != nil {
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return err
}
case string(common.DataTypeRunCounter):
var runCounter uint64
if err := json.Unmarshal(action.Data, &runCounter); err != nil {
return err
}
r.log.Debugf("inserting run counter %q, c: %d", action.ID, runCounter)
if err := r.insertRunCounterOST(tx, action.ID, runCounter); err != nil {
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return err
}
}
case datamanager.ActionTypeDelete:
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switch action.DataType {
case string(common.DataTypeRun):
case string(common.DataTypeRunCounter):
}
}
return nil
}
func (r *ReadDB) handleEventOST(tx *db.Tx, we *datamanager.WatchElement) error {
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//r.log.Debugf("event: %s %q : %q\n", ev.Type, ev.Kv.Key, ev.Kv.Value)
//key := string(ev.Kv.Key)
if err := r.handleWalEvent(tx, we); err != nil {
return err
}
return nil
}
func (r *ReadDB) handleWalEvent(tx *db.Tx, we *datamanager.WatchElement) error {
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for cgName, cgRev := range we.ChangeGroupsRevisions {
if err := r.insertChangeGroupRevisionOST(tx, cgName, cgRev); err != nil {
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return err
}
}
if we.WalData != nil {
// update readdb only when the wal has been committed to etcd
if we.WalData.WalStatus != datamanager.WalStatusCommitted {
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return nil
}
if err := r.insertCommittedWalSequenceOST(tx, we.WalData.WalSequence); err != nil {
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return err
}
r.log.Debugf("applying wal to db")
return r.applyWal(tx, we.WalData.WalDataFileID)
}
return nil
}
func (r *ReadDB) Do(ctx context.Context, f func(tx *db.Tx) error) error {
if !r.IsInitialized() {
return errors.Errorf("db not initialized")
}
return r.rdb.Do(ctx, f)
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}
func insertRevision(tx *db.Tx, revision int64) error {
// poor man insert or update that works because transaction isolation level is serializable
if _, err := tx.Exec("delete from revision"); err != nil {
return errors.Errorf("failed to delete revision: %w", err)
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}
// TODO(sgotti) go database/sql and mattn/sqlite3 don't support uint64 types...
//q, args, err = revisionInsert.Values(int64(wresp.Header.ClusterId), run.Revision).ToSql()
q, args, err := revisionInsert.Values(revision).ToSql()
if err != nil {
return errors.Errorf("failed to build query: %w", err)
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}
if _, err = tx.Exec(q, args...); err != nil {
return err
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}
return nil
}
func insertRevisionOST(tx *db.Tx, revision int64) error {
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// poor man insert or update that works because transaction isolation level is serializable
if _, err := tx.Exec("delete from revision_ost"); err != nil {
return errors.Errorf("failed to delete revision: %w", err)
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}
// TODO(sgotti) go database/sql and mattn/sqlite3 don't support uint64 types...
//q, args, err = revisionInsert.Values(int64(wresp.Header.ClusterId), run.Revision).ToSql()
q, args, err := revisionOSTInsert.Values(revision).ToSql()
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if err != nil {
return errors.Errorf("failed to build query: %w", err)
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}
if _, err = tx.Exec(q, args...); err != nil {
return err
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}
return nil
}
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func insertRun(tx *db.Tx, run *types.Run, data []byte) error {
// add ending slash to distinguish between final group (i.e project/projectid/branch/feature and project/projectid/branch/feature02)
groupPath := run.Group
if !strings.HasSuffix(groupPath, "/") {
groupPath += "/"
}
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// poor man insert or update that works because transaction isolation level is serializable
if _, err := tx.Exec("delete from run where id = $1", run.ID); err != nil {
return errors.Errorf("failed to delete run: %w", err)
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}
q, args, err := runInsert.Values(run.ID, groupPath, run.Phase, run.Result).ToSql()
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if err != nil {
return errors.Errorf("failed to build query: %w", err)
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}
if _, err = tx.Exec(q, args...); err != nil {
return err
}
// poor man insert or update that works because transaction isolation level is serializable
if _, err := tx.Exec("delete from rundata where id = $1", run.ID); err != nil {
return errors.Errorf("failed to delete rundata: %w", err)
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}
q, args, err = rundataInsert.Values(run.ID, data).ToSql()
if err != nil {
return errors.Errorf("failed to build query: %w", err)
}
if _, err = tx.Exec(q, args...); err != nil {
return err
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}
return nil
}
func (r *ReadDB) insertRunOST(tx *db.Tx, run *types.Run, data []byte) error {
// add ending slash to distinguish between final group (i.e project/projectid/branch/feature and project/projectid/branch/feature02)
groupPath := run.Group
if !strings.HasSuffix(groupPath, "/") {
groupPath += "/"
}
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// poor man insert or update that works because transaction isolation level is serializable
if _, err := tx.Exec("delete from run_ost where id = $1", run.ID); err != nil {
return errors.Errorf("failed to delete run objectstorage: %w", err)
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}
q, args, err := runOSTInsert.Values(run.ID, groupPath, run.Phase, run.Result).ToSql()
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if err != nil {
return errors.Errorf("failed to build query: %w", err)
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}
if _, err = tx.Exec(q, args...); err != nil {
return err
}
// poor man insert or update that works because transaction isolation level is serializable
if _, err := tx.Exec("delete from rundata_ost where id = $1", run.ID); err != nil {
return errors.Errorf("failed to delete rundata: %w", err)
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}
q, args, err = rundataOSTInsert.Values(run.ID, data).ToSql()
if err != nil {
return errors.Errorf("failed to build query: %w", err)
}
if _, err = tx.Exec(q, args...); err != nil {
return err
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}
return nil
}
func insertChangeGroupRevision(tx *db.Tx, changegroupID string, revision int64) error {
// poor man insert or update that works because transaction isolation level is serializable
if _, err := tx.Exec("delete from changegrouprevision where id = $1", changegroupID); err != nil {
return errors.Errorf("failed to delete run: %w", err)
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}
q, args, err := changegrouprevisionInsert.Values(changegroupID, revision).ToSql()
if err != nil {
return errors.Errorf("failed to build query: %w", err)
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}
if _, err = tx.Exec(q, args...); err != nil {
return err
}
return nil
}
func (r *ReadDB) GetRevision(ctx context.Context) (int64, error) {
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var revision int64
err := r.rdb.Do(ctx, func(tx *db.Tx) error {
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var err error
revision, err = r.getRevision(tx)
return err
})
return revision, err
}
func (r *ReadDB) getRevision(tx *db.Tx) (int64, error) {
var revision int64
q, args, err := revisionSelect.ToSql()
r.log.Debugf("q: %s, args: %s", q, util.Dump(args))
if err != nil {
return 0, errors.Errorf("failed to build query: %w", err)
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}
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err = tx.QueryRow(q, args...).Scan(&revision)
if err == sql.ErrNoRows {
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return 0, nil
}
return revision, err
}
func (r *ReadDB) GetChangeGroupsUpdateTokens(tx *db.Tx, groups []string) (*types.ChangeGroupsUpdateToken, error) {
s := changegrouprevisionSelect.Where(sq.Eq{"id": groups})
q, args, err := s.ToSql()
r.log.Debugf("q: %s, args: %s", q, util.Dump(args))
if err != nil {
return nil, errors.Errorf("failed to build query: %w", err)
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}
changeGroupsRevisions, err := fetchChangeGroupsRevision(tx, q, args...)
if err != nil {
return nil, err
}
revision, err := r.getRevision(tx)
if err != nil {
return nil, err
}
// for non existing changegroups use a changegroup with revision = 0
for _, g := range groups {
if _, ok := changeGroupsRevisions[g]; !ok {
changeGroupsRevisions[g] = 0
}
}
return &types.ChangeGroupsUpdateToken{CurRevision: revision, ChangeGroupsRevisions: changeGroupsRevisions}, nil
}
func (r *ReadDB) GetActiveRuns(tx *db.Tx, groups []string, lastRun bool, phaseFilter []types.RunPhase, resultFilter []types.RunResult, startRunID string, limit int, sortOrder types.SortOrder) ([]*RunData, error) {
return r.getRunsFilteredActive(tx, groups, lastRun, phaseFilter, resultFilter, startRunID, limit, sortOrder)
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}
func (r *ReadDB) GetRuns(tx *db.Tx, groups []string, lastRun bool, phaseFilter []types.RunPhase, resultFilter []types.RunResult, startRunID string, limit int, sortOrder types.SortOrder) ([]*types.Run, error) {
useObjectStorage := false
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for _, phase := range phaseFilter {
if phase == types.RunPhaseFinished || phase == types.RunPhaseCancelled {
useObjectStorage = true
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}
}
if len(phaseFilter) == 0 {
useObjectStorage = true
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}
runDataRDB, err := r.getRunsFilteredActive(tx, groups, lastRun, phaseFilter, resultFilter, startRunID, limit, sortOrder)
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if err != nil {
return nil, err
}
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lastRunsMap := map[string]*RunData{}
runsMap := map[string]*RunData{}
for _, r := range runDataRDB {
runsMap[r.ID] = r
lastRunsMap[r.GroupPath] = r
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}
if useObjectStorage {
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// skip if the phase requested is not finished
runDataOST, err := r.GetRunsFilteredOST(tx, groups, lastRun, phaseFilter, resultFilter, startRunID, limit, sortOrder)
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if err != nil {
return nil, err
}
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for _, rd := range runDataOST {
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if lastRun {
if lr, ok := lastRunsMap[rd.GroupPath]; ok {
switch sortOrder {
case types.SortOrderAsc:
if rd.ID < lr.ID {
lastRunsMap[rd.GroupPath] = rd
}
case types.SortOrderDesc:
if rd.ID > lr.ID {
lastRunsMap[rd.GroupPath] = rd
}
}
} else {
lastRunsMap[rd.GroupPath] = rd
runsMap[rd.ID] = rd
}
} else {
runsMap[rd.ID] = rd
}
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}
}
var keys []string
for k := range runsMap {
keys = append(keys, k)
}
switch sortOrder {
case types.SortOrderAsc:
sort.Sort(sort.StringSlice(keys))
case types.SortOrderDesc:
sort.Sort(sort.Reverse(sort.StringSlice(keys)))
}
aruns := make([]*types.Run, 0, len(runsMap))
count := 0
for _, runID := range keys {
if count >= limit {
break
}
count++
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rd := runsMap[runID]
if rd.Run != nil {
aruns = append(aruns, rd.Run)
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continue
}
// get run from objectstorage
run, err := store.OSTGetRun(r.dm, runID)
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if err != nil {
return nil, err
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}
aruns = append(aruns, run)
}
return aruns, nil
}
func (r *ReadDB) getRunsFilteredQuery(phaseFilter []types.RunPhase, resultFilter []types.RunResult, groups []string, lastRun bool, startRunID string, limit int, sortOrder types.SortOrder, objectstorage bool) sq.SelectBuilder {
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runt := "run"
rundatat := "rundata"
fields := []string{"run.id", "run.grouppath", "run.phase", "rundata.data"}
if len(groups) > 0 && lastRun {
fields = []string{"max(run.id)", "run.grouppath", "run.phase", "rundata.data"}
}
if objectstorage {
runt = "run_ost"
rundatat = "rundata_ost"
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}
r.log.Debugf("runt: %s", runt)
s := sb.Select(fields...).From(runt + " as run")
switch sortOrder {
case types.SortOrderAsc:
s = s.OrderBy("run.id asc")
case types.SortOrderDesc:
s = s.OrderBy("run.id desc")
}
if len(phaseFilter) > 0 {
s = s.Where(sq.Eq{"phase": phaseFilter})
}
if len(resultFilter) > 0 {
s = s.Where(sq.Eq{"result": resultFilter})
}
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if startRunID != "" {
if lastRun {
switch sortOrder {
case types.SortOrderAsc:
s = s.Having(sq.Gt{"run.id": startRunID})
case types.SortOrderDesc:
s = s.Having(sq.Lt{"run.id": startRunID})
}
} else {
switch sortOrder {
case types.SortOrderAsc:
s = s.Where(sq.Gt{"run.id": startRunID})
case types.SortOrderDesc:
s = s.Where(sq.Lt{"run.id": startRunID})
}
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}
}
if limit > 0 {
s = s.Limit(uint64(limit))
}
s = s.Join(fmt.Sprintf("%s as rundata on rundata.id = run.id", rundatat))
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if len(groups) > 0 {
cond := sq.Or{}
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for _, groupPath := range groups {
// add ending slash to distinguish between final group (i.e project/projectid/branch/feature and project/projectid/branch/feature02)
if !strings.HasSuffix(groupPath, "/") {
groupPath += "/"
}
cond = append(cond, sq.Like{"run.grouppath": groupPath + "%"})
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}
s = s.Where(sq.Or{cond})
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if lastRun {
s = s.GroupBy("run.grouppath")
}
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}
return s
}
func (r *ReadDB) getRunsFilteredActive(tx *db.Tx, groups []string, lastRun bool, phaseFilter []types.RunPhase, resultFilter []types.RunResult, startRunID string, limit int, sortOrder types.SortOrder) ([]*RunData, error) {
s := r.getRunsFilteredQuery(phaseFilter, resultFilter, groups, lastRun, startRunID, limit, sortOrder, false)
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q, args, err := s.ToSql()
r.log.Debugf("q: %s, args: %s", q, util.Dump(args))
if err != nil {
return nil, errors.Errorf("failed to build query: %w", err)
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}
return fetchRuns(tx, q, args...)
}
func (r *ReadDB) GetRunsFilteredOST(tx *db.Tx, groups []string, lastRun bool, phaseFilter []types.RunPhase, resultFilter []types.RunResult, startRunID string, limit int, sortOrder types.SortOrder) ([]*RunData, error) {
s := r.getRunsFilteredQuery(phaseFilter, resultFilter, groups, lastRun, startRunID, limit, sortOrder, true)
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q, args, err := s.ToSql()
r.log.Debugf("q: %s, args: %s", q, util.Dump(args))
if err != nil {
return nil, errors.Errorf("failed to build query: %w", err)
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}
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return fetchRuns(tx, q, args...)
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}
func (r *ReadDB) GetRun(tx *db.Tx, runID string) (*types.Run, error) {
run, err := r.getRun(tx, runID, false)
if err != nil {
return nil, err
}
if run != nil {
return run, nil
}
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// try to fetch from ost
return r.getRun(tx, runID, true)
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}
func (r *ReadDB) getRun(tx *db.Tx, runID string, ost bool) (*types.Run, error) {
s := r.getRunQuery(runID, ost)
q, args, err := s.ToSql()
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r.log.Debugf("q: %s, args: %s", q, util.Dump(args))
if err != nil {
return nil, errors.Errorf("failed to build query: %w", err)
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}
runsData, err := fetchRuns(tx, q, args...)
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if err != nil {
return nil, err
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}
if len(runsData) > 1 {
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return nil, errors.Errorf("too many rows returned")
}
if len(runsData) == 0 {
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return nil, nil
}
run := runsData[0].Run
if run == nil {
var err error
if !ost {
return nil, errors.Errorf("nil active run data. This should never happen")
}
// get run from objectstorage
run, err = store.OSTGetRun(r.dm, runID)
if err != nil {
return nil, err
}
}
return run, nil
}
func (r *ReadDB) getRunQuery(runID string, objectstorage bool) sq.SelectBuilder {
runt := "run"
rundatat := "rundata"
fields := []string{"run.id", "run.grouppath", "run.phase", "rundata.data"}
if objectstorage {
runt = "run_ost"
rundatat = "rundata_ost"
}
s := sb.Select(fields...).From(runt + " as run").Where(sq.Eq{"run.id": runID})
s = s.Join(fmt.Sprintf("%s as rundata on rundata.id = run.id", rundatat))
return s
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}
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type RunData struct {
ID string
GroupPath string
Phase string
Run *types.Run
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}
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func fetchRuns(tx *db.Tx, q string, args ...interface{}) ([]*RunData, error) {
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rows, err := tx.Query(q, args...)
if err != nil {
return nil, err
}
defer rows.Close()
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return scanRuns(rows)
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}
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func scanRun(rows *sql.Rows) (*RunData, error) {
r := &RunData{}
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var data []byte
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if err := rows.Scan(&r.ID, &r.GroupPath, &r.Phase, &data); err != nil {
return nil, errors.Errorf("failed to scan rows: %w", err)
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}
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if len(data) > 0 {
if err := json.Unmarshal(data, &r.Run); err != nil {
return nil, errors.Errorf("failed to unmarshal run: %w", err)
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}
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}
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return r, nil
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}
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func scanRuns(rows *sql.Rows) ([]*RunData, error) {
runs := []*RunData{}
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for rows.Next() {
r, err := scanRun(rows)
if err != nil {
return nil, err
}
runs = append(runs, r)
}
if err := rows.Err(); err != nil {
return nil, err
}
return runs, nil
}
func fetchChangeGroupsRevision(tx *db.Tx, q string, args ...interface{}) (types.ChangeGroupsRevisions, error) {
rows, err := tx.Query(q, args...)
if err != nil {
return nil, err
}
defer rows.Close()
return scanChangeGroupsRevision(rows)
}
func scanChangeGroupsRevision(rows *sql.Rows) (types.ChangeGroupsRevisions, error) {
changegroups := types.ChangeGroupsRevisions{}
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for rows.Next() {
var (
id string
revision int64
)
if err := rows.Scan(&id, &revision); err != nil {
return nil, errors.Errorf("failed to scan rows: %w", err)
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}
changegroups[id] = revision
}
if err := rows.Err(); err != nil {
return nil, err
}
return changegroups, nil
}
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func (r *ReadDB) insertCommittedWalSequenceOST(tx *db.Tx, seq string) error {
r.log.Debugf("insert seq: %s", seq)
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// poor man insert or update that works because transaction isolation level is serializable
if _, err := tx.Exec("delete from committedwalsequence_ost"); err != nil {
return errors.Errorf("failed to delete committedwalsequence: %w", err)
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}
q, args, err := committedwalsequenceOSTInsert.Values(seq).ToSql()
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if err != nil {
return errors.Errorf("failed to build query: %w", err)
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}
if _, err = tx.Exec(q, args...); err != nil {
return err
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}
return nil
}
func (r *ReadDB) GetCommittedWalSequenceOST(tx *db.Tx) (string, error) {
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var seq string
q, args, err := committedwalsequenceOSTSelect.OrderBy("seq").Limit(1).ToSql()
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r.log.Debugf("q: %s, args: %s", q, util.Dump(args))
if err != nil {
return "", errors.Errorf("failed to build query: %w", err)
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}
err = tx.QueryRow(q, args...).Scan(&seq)
if err == sql.ErrNoRows {
return "", nil
}
return seq, err
}
func (r *ReadDB) insertChangeGroupRevisionOST(tx *db.Tx, changegroup string, revision int64) error {
r.log.Debugf("insertChangeGroupRevision: %s %d", changegroup, revision)
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// poor man insert or update that works because transaction isolation level is serializable
if _, err := tx.Exec("delete from changegrouprevision_ost where id = $1", changegroup); err != nil {
return errors.Errorf("failed to delete run: %w", err)
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}
// insert only if revision > 0
if revision > 0 {
q, args, err := changegrouprevisionOSTInsert.Values(changegroup, revision).ToSql()
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if err != nil {
return errors.Errorf("failed to build query: %w", err)
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}
if _, err = tx.Exec(q, args...); err != nil {
return err
}
}
return nil
}
func (r *ReadDB) GetChangeGroupsUpdateTokensOST(tx *db.Tx, groups []string) (*datamanager.ChangeGroupsUpdateToken, error) {
s := changegrouprevisionOSTSelect.Where(sq.Eq{"id": groups})
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q, args, err := s.ToSql()
r.log.Debugf("q: %s, args: %s", q, util.Dump(args))
if err != nil {
return nil, errors.Errorf("failed to build query: %w", err)
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}
cgr, err := fetchChangeGroupsRevisionOST(tx, q, args...)
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if err != nil {
return nil, err
}
revision, err := r.getRevision(tx)
if err != nil {
return nil, err
}
// for non existing changegroups use a changegroup with revision = 0
for _, g := range groups {
if _, ok := cgr[g]; !ok {
cgr[g] = 0
}
}
return &datamanager.ChangeGroupsUpdateToken{CurRevision: revision, ChangeGroupsRevisions: cgr}, nil
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}
func fetchChangeGroupsRevisionOST(tx *db.Tx, q string, args ...interface{}) (map[string]int64, error) {
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rows, err := tx.Query(q, args...)
if err != nil {
return nil, err
}
defer rows.Close()
return scanChangeGroupsRevisionOST(rows)
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}
func scanChangeGroupsRevisionOST(rows *sql.Rows) (map[string]int64, error) {
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changegroups := map[string]int64{}
for rows.Next() {
var (
id string
revision int64
)
if err := rows.Scan(&id, &revision); err != nil {
return nil, errors.Errorf("failed to scan rows: %w", err)
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}
changegroups[id] = revision
}
if err := rows.Err(); err != nil {
return nil, err
}
return changegroups, nil
}
func (r *ReadDB) insertRunCounterOST(tx *db.Tx, group string, counter uint64) error {
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// poor man insert or update that works because transaction isolation level is serializable
if _, err := tx.Exec("delete from runcounter_ost where groupid = $1", group); err != nil {
return errors.Errorf("failed to delete revision: %w", err)
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}
// TODO(sgotti) go database/sql and mattn/sqlite3 don't support uint64 types...
//q, args, err = revisionInsert.Values(int64(wresp.Header.ClusterId), run.Revision).ToSql()
q, args, err := runcounterOSTInsert.Values(group, counter).ToSql()
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if err != nil {
return errors.Errorf("failed to build query: %w", err)
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}
if _, err = tx.Exec(q, args...); err != nil {
return err
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}
return nil
}
func (r *ReadDB) GetRunCounterOST(tx *db.Tx, group string) (uint64, error) {
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var g string
var counter uint64
q, args, err := runcounterOSTSelect.Where(sq.Eq{"groupid": group}).ToSql()
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r.log.Debugf("q: %s, args: %s", q, util.Dump(args))
if err != nil {
return 0, errors.Errorf("failed to build query: %w", err)
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}
err = tx.QueryRow(q, args...).Scan(&g, &counter)
if err == sql.ErrNoRows {
return 0, nil
}
return counter, err
}
func (r *ReadDB) GetRunCountersOST(tx *db.Tx, start string, limit int) ([]*types.RunCounter, error) {
s := runcounterOSTSelect.Where(sq.Gt{"groupid": start})
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if limit > 0 {
s = s.Limit(uint64(limit))
}
s = s.OrderBy("groupid asc")
q, args, err := s.ToSql()
r.log.Debugf("q: %s, args: %s", q, util.Dump(args))
if err != nil {
return nil, errors.Errorf("failed to build query: %w", err)
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}
return fetchRunCounters(tx, q, args...)
}
func fetchRunCounters(tx *db.Tx, q string, args ...interface{}) ([]*types.RunCounter, error) {
rows, err := tx.Query(q, args...)
if err != nil {
return nil, err
}
defer rows.Close()
return scanRunCounters(rows)
}
func scanRunCounter(rows *sql.Rows) (*types.RunCounter, error) {
r := &types.RunCounter{}
if err := rows.Scan(&r.Group, &r.Counter); err != nil {
return nil, errors.Errorf("failed to scan rows: %w", err)
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}
return r, nil
}
func scanRunCounters(rows *sql.Rows) ([]*types.RunCounter, error) {
runCounters := []*types.RunCounter{}
for rows.Next() {
r, err := scanRunCounter(rows)
if err != nil {
return nil, err
}
runCounters = append(runCounters, r)
}
if err := rows.Err(); err != nil {
return nil, err
}
return runCounters, nil
}