func (e *Elasticsearch) applyOp(msg *message.Msg) (*message.Msg, error) {
if msg.Op == message.Command {
err := e.runCommand(msg)
if err != nil {
e.pipe.Err <- NewError(ERROR, e.path, fmt.Sprintf("elasticsearch error (%s)", err), msg.Data)
}
return msg, nil
}
// TODO there might be some inconsistency here. elasticsearch uses the _id field for an primary index,
// and we're just mapping it to a string here.
id, err := msg.IDString("_id")
if err != nil {
id = ""
}
_, _type, err := msg.SplitNamespace()
if err != nil {
e.pipe.Err <- NewError(ERROR, e.path, fmt.Sprintf("unable to determine type from msg.Namespace (%s)", msg.Namespace), msg)
return msg, nil
}
switch msg.Op {
case message.Delete:
e.indexer.Delete(e.index, _type, id, false)
err = nil
default:
err = e.indexer.Index(e.index, _type, id, "", "", nil, msg.Data, false)
}
if err != nil {
e.pipe.Err <- NewError(ERROR, e.path, fmt.Sprintf("elasticsearch error (%s)", err), msg.Data)
}
return msg, nil
}
// applyOp applies one operation to the database
func (r *Rethinkdb) applyOp(msg *message.Msg) (*message.Msg, error) {
var (
resp gorethink.WriteResponse
err error
)
_, msgTable, err := msg.SplitNamespace()
if err != nil {
r.pipe.Err <- NewError(ERROR, r.path, fmt.Sprintf("rethinkdb error (msg namespace improperly formatted, must be database.table, got %s)", msg.Namespace), msg.Data)
return msg, nil
}
if !msg.IsMap() {
r.pipe.Err <- NewError(ERROR, r.path, "rethinkdb error (document must be a json document)", msg.Data)
return msg, nil
}
doc := msg.Map()
switch msg.Op {
case message.Delete:
id, err := msg.IDString("id")
if err != nil {
r.pipe.Err <- NewError(ERROR, r.path, "rethinkdb error (cannot delete an object with a nil id)", msg.Data)
return msg, nil
}
resp, err = gorethink.Table(msgTable).Get(id).Delete().RunWrite(r.client)
case message.Insert:
resp, err = gorethink.Table(msgTable).Insert(doc).RunWrite(r.client)
case message.Update:
resp, err = gorethink.Table(msgTable).Insert(doc, gorethink.InsertOpts{Conflict: "replace"}).RunWrite(r.client)
}
if err != nil {
r.pipe.Err <- NewError(ERROR, r.path, "rethinkdb error (%s)", err)
return msg, nil
}
err = r.handleResponse(&resp)
if err != nil {
r.pipe.Err <- NewError(ERROR, r.path, "rethinkdb error (%s)", err)
}
return msg, nil
}