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Implement query to get state and auth chain (#352)
* Implement query to get state and auth chain * Add routing for queryStateAndAuthChain * Comments * Fix fetching wrong set of events * Add tests * Shuffle and comment
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174 changes: 174 additions & 0 deletions
174
src/github.com/matrix-org/dendrite/roomserver/query/query_test.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,174 @@ | ||
| // Copyright 2017 Vector Creations Ltd | ||
| // | ||
| // 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. | ||
|
|
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| package query | ||
|
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| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "testing" | ||
|
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| "sort" | ||
|
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| "github.com/matrix-org/dendrite/roomserver/types" | ||
| "github.com/matrix-org/gomatrixserverlib" | ||
| ) | ||
|
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| // used to implement RoomserverQueryAPIEventDB to test getAuthChain | ||
| type getEventDB struct { | ||
| eventMap map[string]gomatrixserverlib.Event | ||
| } | ||
|
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| func createEventDB() *getEventDB { | ||
| return &getEventDB{ | ||
| eventMap: make(map[string]gomatrixserverlib.Event), | ||
| } | ||
| } | ||
|
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| // Adds a fake event to the storage with given auth events. | ||
| func (db *getEventDB) addFakeEvent(eventID string, authIDs []string) error { | ||
| authEvents := []gomatrixserverlib.EventReference{} | ||
| for _, authID := range authIDs { | ||
| authEvents = append(authEvents, gomatrixserverlib.EventReference{ | ||
| EventID: authID, | ||
| }) | ||
| } | ||
|
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| builder := map[string]interface{}{ | ||
| "event_id": eventID, | ||
| "auth_events": authEvents, | ||
| } | ||
|
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| eventJSON, err := json.Marshal(&builder) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| event, err := gomatrixserverlib.NewEventFromTrustedJSON(eventJSON, false) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| db.eventMap[eventID] = event | ||
|
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| return nil | ||
| } | ||
|
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| // Adds multiple events at once, each entry in the map is an eventID and set of | ||
| // auth events that are converted to an event and added. | ||
| func (db *getEventDB) addFakeEvents(graph map[string][]string) error { | ||
| for eventID, authIDs := range graph { | ||
| err := db.addFakeEvent(eventID, authIDs) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| // EventsFromIDs implements RoomserverQueryAPIEventDB | ||
| func (db *getEventDB) EventsFromIDs(ctx context.Context, eventIDs []string) (res []types.Event, err error) { | ||
| for _, evID := range eventIDs { | ||
| res = append(res, types.Event{ | ||
| EventNID: 0, | ||
| Event: db.eventMap[evID], | ||
| }) | ||
| } | ||
|
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| return | ||
| } | ||
|
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| // Returns if the slices are equal after sorting them. | ||
| func compareUnsortedStringSlices(a []string, b []string) bool { | ||
| if len(a) != len(b) { | ||
| return false | ||
| } | ||
|
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| sort.Strings(a) | ||
| sort.Strings(b) | ||
|
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| for i := range a { | ||
| if a[i] != b[i] { | ||
| return false | ||
| } | ||
| } | ||
|
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| return true | ||
| } | ||
|
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| func TestGetAuthChainSingle(t *testing.T) { | ||
| db := createEventDB() | ||
|
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| err := db.addFakeEvents(map[string][]string{ | ||
| "a": {}, | ||
| "b": {"a"}, | ||
| "c": {"a", "b"}, | ||
| "d": {"b", "c"}, | ||
| "e": {"a", "d"}, | ||
| }) | ||
|
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| if err != nil { | ||
| t.Fatalf("Failed to add events to db: %v", err) | ||
| } | ||
|
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| result, err := getAuthChain(context.TODO(), db, []string{"e"}) | ||
| if err != nil { | ||
| t.Fatalf("getAuthChain failed: %v", err) | ||
| } | ||
|
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| var returnedIDs []string | ||
| for _, event := range result { | ||
| returnedIDs = append(returnedIDs, event.EventID()) | ||
| } | ||
|
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| expectedIDs := []string{"a", "b", "c", "d", "e"} | ||
|
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| if !compareUnsortedStringSlices(expectedIDs, returnedIDs) { | ||
| t.Fatalf("returnedIDs got '%v', expected '%v'", returnedIDs, expectedIDs) | ||
| } | ||
| } | ||
|
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| func TestGetAuthChainMultiple(t *testing.T) { | ||
| db := createEventDB() | ||
|
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| err := db.addFakeEvents(map[string][]string{ | ||
| "a": {}, | ||
| "b": {"a"}, | ||
| "c": {"a", "b"}, | ||
| "d": {"b", "c"}, | ||
| "e": {"a", "d"}, | ||
| "f": {"a", "b", "c"}, | ||
| }) | ||
|
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| if err != nil { | ||
| t.Fatalf("Failed to add events to db: %v", err) | ||
| } | ||
|
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| result, err := getAuthChain(context.TODO(), db, []string{"e", "f"}) | ||
| if err != nil { | ||
| t.Fatalf("getAuthChain failed: %v", err) | ||
| } | ||
|
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| var returnedIDs []string | ||
| for _, event := range result { | ||
| returnedIDs = append(returnedIDs, event.EventID()) | ||
| } | ||
|
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| expectedIDs := []string{"a", "b", "c", "d", "e", "f"} | ||
|
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| if !compareUnsortedStringSlices(expectedIDs, returnedIDs) { | ||
| t.Fatalf("returnedIDs got '%v', expected '%v'", returnedIDs, expectedIDs) | ||
| } | ||
| } |
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