func (b *etcdBackend) SetServiceMeta(service string, meta *discoverd.ServiceMeta) error {
serviceKey := b.serviceKey(service)
_, err := b.etcd.Get(serviceKey, false, false)
if isEtcdNotFound(err) {
return NotFoundError{Service: service}
}
if err != nil {
return err
}
var res *etcd.Response
key := path.Join(serviceKey, "meta")
if meta.Index == 0 {
res, err = b.etcd.Create(key, string(meta.Data), 0)
if isEtcdExists(err) {
err = hh.ObjectExistsErr(fmt.Sprintf("Service metadata for %q already exists, use index=n to set", service))
}
} else {
res, err = b.etcd.CompareAndSwap(key, string(meta.Data), 0, "", meta.Index)
if isEtcdNotFound(err) {
err = hh.PreconditionFailedErr(fmt.Sprintf("Service metadata for %q does not exist, use index=0 to set", service))
} else if isEtcdCompareFailed(err) {
err = hh.PreconditionFailedErr(fmt.Sprintf("Service metadata for %q exists, but wrong index provided", service))
}
}
if err != nil {
return err
}
meta.Index = res.Node.ModifiedIndex
return nil
}
func (r *AppRepo) Add(data interface{}) error {
app := data.(*ct.App)
tx, err := r.db.Begin()
if err != nil {
return err
}
if app.Name == "" {
var nameID uint32
if err := tx.QueryRow("SELECT nextval('name_ids')").Scan(&nameID); err != nil {
tx.Rollback()
return err
}
app.Name = name.Get(nameID)
}
if len(app.Name) > 100 || !utils.AppNamePattern.MatchString(app.Name) {
return ct.ValidationError{Field: "name", Message: "is invalid"}
}
if app.ID == "" {
app.ID = random.UUID()
}
if app.Strategy == "" {
app.Strategy = "all-at-once"
}
meta, err := json.Marshal(app.Meta)
if err != nil {
return err
}
if err := tx.QueryRow("INSERT INTO apps (app_id, name, meta, strategy) VALUES ($1, $2, $3, $4) RETURNING created_at, updated_at", app.ID, app.Name, meta, app.Strategy).Scan(&app.CreatedAt, &app.UpdatedAt); err != nil {
tx.Rollback()
if postgres.IsUniquenessError(err, "apps_name_idx") {
return httphelper.ObjectExistsErr(fmt.Sprintf("application %q already exists", app.Name))
}
return err
}
if err := createEvent(tx.Exec, &ct.Event{
AppID: app.ID,
ObjectID: app.ID,
ObjectType: ct.EventTypeApp,
}, app); err != nil {
tx.Rollback()
return err
}
if err := tx.Commit(); err != nil {
return err
}
if !app.System() && r.defaultDomain != "" {
route := (&router.HTTPRoute{
Domain: fmt.Sprintf("%s.%s", app.Name, r.defaultDomain),
Service: app.Name + "-web",
}).ToRoute()
if err := createRoute(r.db, r.router, app.ID, route); err != nil {
log.Printf("Error creating default route for %s: %s", app.Name, err)
}
}
return nil
}
func (s *Store) applySetServiceMetaCommand(cmd []byte, index uint64) error {
var c setServiceMetaCommand
if err := json.Unmarshal(cmd, &c); err != nil {
return err
}
// Verify that the service exists.
service := s.data.Services[c.Service]
if service == nil {
return NotFoundError{Service: c.Service}
}
// If no index is provided then the meta should not be set.
curr := s.data.Metas[c.Service]
if c.Meta.Index == 0 {
if curr != nil {
return hh.ObjectExistsErr(fmt.Sprintf("Service metadata for %q already exists, use index=n to set", c.Service))
}
} else {
if curr == nil {
return hh.PreconditionFailedErr(fmt.Sprintf("Service metadata for %q does not exist, use index=0 to set", c.Service))
} else if curr.Index != c.Meta.Index {
return hh.PreconditionFailedErr(fmt.Sprintf("Service metadata for %q exists, but wrong index provided", c.Service))
}
}
leaderID := c.Meta.LeaderID
c.Meta.LeaderID = ""
// Update the meta and set the index.
c.Meta.Index = index
s.data.Metas[c.Service] = c.Meta
if leaderID != "" {
// If a new leader was included in the meta update, apply it
s.data.Leaders[c.Service] = leaderID
}
// Broadcast EventKindServiceMeta event.
s.broadcast(&discoverd.Event{
Service: c.Service,
Kind: discoverd.EventKindServiceMeta,
ServiceMeta: c.Meta,
})
if leaderID != "" {
// Broadcast leader update, if the new instance exists
if inst := s.data.Instances[c.Service][leaderID]; inst != nil {
s.broadcast(&discoverd.Event{
Service: c.Service,
Kind: discoverd.EventKindLeader,
Instance: inst,
})
}
}
return nil
}
func (r *AppRepo) Add(data interface{}) error {
app := data.(*ct.App)
tx, err := r.db.Begin()
if err != nil {
return err
}
if app.Name == "" {
var nameID int64
if err := tx.QueryRow("app_next_name_id").Scan(&nameID); err != nil {
tx.Rollback()
return err
}
// Safe cast because name_ids is limited to 32 bit size in schema
app.Name = name.Get(uint32(nameID))
}
if len(app.Name) > 100 || !utils.AppNamePattern.MatchString(app.Name) {
return ct.ValidationError{Field: "name", Message: "is invalid"}
}
if app.ID == "" {
app.ID = random.UUID()
}
if app.Strategy == "" {
app.Strategy = "all-at-once"
}
if app.DeployTimeout == 0 {
app.DeployTimeout = ct.DefaultDeployTimeout
}
if err := tx.QueryRow("app_insert", app.ID, app.Name, app.Meta, app.Strategy, app.DeployTimeout).Scan(&app.CreatedAt, &app.UpdatedAt); err != nil {
tx.Rollback()
if postgres.IsUniquenessError(err, "apps_name_idx") {
return httphelper.ObjectExistsErr(fmt.Sprintf("application %q already exists", app.Name))
}
return err
}
if err := createEvent(tx.Exec, &ct.Event{
AppID: app.ID,
ObjectID: app.ID,
ObjectType: ct.EventTypeApp,
}, app); err != nil {
tx.Rollback()
return err
}
if err := tx.Commit(); err != nil {
return err
}
if !app.System() && r.defaultDomain != "" {
route := (&router.HTTPRoute{
Domain: fmt.Sprintf("%s.%s", app.Name, r.defaultDomain),
Service: app.Name + "-web",
}).ToRoute()
if err := createRoute(r.db, r.router, app.ID, route); err != nil {
log.Printf("Error creating default route for %s: %s", app.Name, err)
}
}
return nil
}
func (r *AppRepo) Add(data interface{}) error {
app := data.(*ct.App)
if app.Name == "" {
var nameID uint32
if err := r.db.QueryRow("SELECT nextval('name_ids')").Scan(&nameID); err != nil {
return err
}
app.Name = name.Get(nameID)
}
if len(app.Name) > 100 || !appNamePattern.MatchString(app.Name) {
return ct.ValidationError{Field: "name", Message: "is invalid"}
}
if app.ID == "" {
app.ID = random.UUID()
}
if app.Strategy == "" {
app.Strategy = "all-at-once"
}
meta := metaToHstore(app.Meta)
if err := r.db.QueryRow("INSERT INTO apps (app_id, name, meta, strategy) VALUES ($1, $2, $3, $4) RETURNING created_at, updated_at", app.ID, app.Name, meta, app.Strategy).Scan(&app.CreatedAt, &app.UpdatedAt); err != nil {
if postgres.IsUniquenessError(err, "apps_name_idx") {
return httphelper.ObjectExistsErr(fmt.Sprintf("application %q already exists", app.Name))
}
return err
}
app.ID = postgres.CleanUUID(app.ID)
if !app.System() && r.defaultDomain != "" {
route := (&router.HTTPRoute{
Domain: fmt.Sprintf("%s.%s", app.Name, r.defaultDomain),
Service: app.Name + "-web",
}).ToRoute()
route.ParentRef = routeParentRef(app.ID)
if err := r.router.CreateRoute(route); err != nil {
log.Printf("Error creating default route for %s: %s", app.Name, err)
}
}
return nil
}