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| /**
* Copyright 2017 Google Inc.
*
* 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.
*/
import * as api from '../protos/firestore_proto_api';
import { Blob } from '../api/blob';
import { GeoPoint } from '../api/geo_point';
import { DatabaseId } from '../core/database_info';
import {
Bound,
Direction,
Filter,
NanFilter,
NullFilter,
OrderBy,
Query,
RelationFilter,
RelationOp
} from '../core/query';
import { SnapshotVersion } from '../core/snapshot_version';
import { Timestamp } from '../core/timestamp';
import { ProtoByteString, TargetId } from '../core/types';
import { QueryData, QueryPurpose } from '../local/query_data';
import { Document, MaybeDocument, NoDocument } from '../model/document';
import { DocumentKey } from '../model/document_key';
import * as fieldValue from '../model/field_value';
import {
DeleteMutation,
FieldMask,
FieldTransform,
Mutation,
MutationResult,
PatchMutation,
Precondition,
ServerTimestampTransform,
SetMutation,
TransformMutation
} from '../model/mutation';
import { FieldPath, ResourcePath } from '../model/path';
import { assert, fail } from '../util/assert';
import { Code, FirestoreError } from '../util/error';
import { AnyJs } from '../util/misc';
import * as obj from '../util/obj';
import * as typeUtils from '../util/types';
import { ExistenceFilter } from './existence_filter';
import { mapCodeFromRpcCode, mapRpcCodeFromCode } from './rpc_error';
import {
DocumentWatchChange,
ExistenceFilterChange,
WatchChange,
WatchTargetChange,
WatchTargetChangeState
} from './watch_change';
import { ApiClientObjectMap } from '../protos/firestore_proto_api';
const DIRECTIONS = (() => {
const dirs: { [dir: string]: api.OrderDirection } = {};
dirs[Direction.ASCENDING.name] = 'ASCENDING';
dirs[Direction.DESCENDING.name] = 'DESCENDING';
return dirs;
})();
const OPERATORS = (() => {
const ops: { [op: string]: api.FieldFilterOp } = {};
ops[RelationOp.LESS_THAN.name] = 'LESS_THAN';
ops[RelationOp.LESS_THAN_OR_EQUAL.name] = 'LESS_THAN_OR_EQUAL';
ops[RelationOp.GREATER_THAN.name] = 'GREATER_THAN';
ops[RelationOp.GREATER_THAN_OR_EQUAL.name] = 'GREATER_THAN_OR_EQUAL';
ops[RelationOp.EQUAL.name] = 'EQUAL';
return ops;
})();
function assertPresent(value: AnyJs, description: string) {
assert(!typeUtils.isNullOrUndefined(value), description + ' is missing');
}
function parseInt64(value: number | string): number {
// TODO(bjornick): Handle int64 greater than 53 bits.
if (typeof value === 'number') {
return value;
} else Eif (typeof value === 'string') {
return Number(value);
} else {
return fail("can't parse " + value);
}
}
// This is a supplement to the generated proto interfaces, which fail to account
// for the fact that a timestamp may be encoded as either a string OR this.
interface TimestampProto {
seconds?: string;
nanos?: number;
}
export interface SerializerOptions {
/**
* The serializer supports both Protobuf.js and Proto3 JSON formats. By
* setting this flag to true, the serializer will use the Proto3 JSON format.
*
* For a description of the Proto3 JSON format check
* https://developers.google.com/protocol-buffers/docs/proto3#json
*/
useProto3Json: boolean;
}
/**
* Generates JsonObject values for the Datastore API suitable for sending to
* either GRPC stub methods or via the JSON/HTTP REST API.
* TODO(klimt): We can remove the databaseId argument if we keep the full
* resource name in documents.
*/
export class JsonProtoSerializer {
constructor(
private databaseId: DatabaseId,
private options: SerializerOptions
) {}
private emptyByteString(): ProtoByteString {
Eif (this.options.useProto3Json) {
return '';
} else {
return new Uint8Array(0);
}
}
private unsafeCastProtoByteString(byteString: ProtoByteString): string {
// byteStrings can be either string or UInt8Array, but the typings say
// it's always a string. Cast as string to avoid type check failing
return byteString as string;
}
fromRpcStatus(status: api.Status): FirestoreError {
const code =
status.code === undefined
? Code.UNKNOWN
: mapCodeFromRpcCode(status.code);
return new FirestoreError(code, status.message || '');
}
/**
* Returns a value for a number (or undefined) that's appropriate to put into
* a google.protobuf.Int32Value proto.
* DO NOT USE THIS FOR ANYTHING ELSE.
* This method cheats. It's typed as returning "number" because that's what
* our generated proto interfaces say Int32Value must be. But GRPC actually
* expects a { value: <number> } struct.
*/
private toInt32Value(val: number | null): number | undefined {
if (!typeUtils.isNullOrUndefined(val)) {
// tslint:disable-next-line:no-any We need to match generated Proto types.
return { value: val } as any;
} else {
return undefined;
}
}
/**
* Returns a number (or null) from a google.protobuf.Int32Value proto.
* DO NOT USE THIS FOR ANYTHING ELSE.
* This method cheats. It's typed as accepting "number" because that's what
* our generated proto interfaces say Int32Value must be, but it actually
* accepts { value: number } to match our serialization in toInt32Value().
*/
private fromInt32Value(val: number | undefined): number | null {
let result;
Eif (typeof val === 'object') {
// tslint:disable-next-line:no-any We need to match generated Proto types.
result = (val as any).value;
} else {
// We accept raw numbers (without the {value: ... } wrapper) for
// compatibility with legacy persisted data.
result = val;
}
return typeUtils.isNullOrUndefined(result) ? null : result;
}
/**
* Returns a value for a Date that's appropriate to put into a proto.
* DO NOT USE THIS FOR ANYTHING ELSE.
* This method cheats. It's typed as returning "string" because that's what
* our generated proto interfaces say dates must be. But it's easier and safer
* to actually return a Timestamp proto.
*/
private toTimestamp(timestamp: Timestamp): string {
return {
seconds: timestamp.seconds,
nanos: timestamp.nanos
// tslint:disable-next-line:no-any
} as any;
}
private fromTimestamp(date: string | TimestampProto): Timestamp {
// The json interface (for the browser) will return an iso timestamp string,
// while the proto js library (for node) will return a
// google.protobuf.Timestamp instance.
if (typeof date === 'string') {
// TODO(b/37282237): Use strings for Proto3 timestamps
// assert(this.options.useProto3Json,
// 'The timestamp string format requires Proto3.');
return Timestamp.fromISOString(date);
} else {
assert(!!date, 'Cannot deserialize null or undefined timestamp.');
// TODO(b/37282237): Use strings for Proto3 timestamps
// assert(!this.options.useProto3Json,
// 'The timestamp instance format requires Proto JS.');
const seconds = parseInt64(date.seconds || '0');
const nanos = date.nanos || 0;
return new Timestamp(seconds, nanos);
}
}
/**
* Returns a value for bytes that's appropriate to put in a proto.
* DO NOT USE THIS FOR ANYTHING ELSE.
* This method cheats. It's typed as returning "string" because that's what
* our generated proto interfaces say bytes must be. But it should return
* an Uint8Array in Node.
*/
private toBytes(bytes: Blob): string {
Eif (this.options.useProto3Json) {
return bytes.toBase64();
} else {
// The typings say it's a string, but it needs to be a Uint8Array in Node.
return this.unsafeCastProtoByteString(bytes.toUint8Array());
}
}
/**
* Parse the blob from the protos into the internal Blob class. Note that the
* typings assume all blobs are strings, but they are actually Uint8Arrays
* on Node.
*/
private fromBlob(blob: string | Uint8Array): Blob {
Eif (typeof blob === 'string') {
assert(
this.options.useProto3Json,
'Expected bytes to be passed in as Uint8Array, but got a string instead.'
);
return Blob.fromBase64String(blob);
} else {
assert(
!this.options.useProto3Json,
'Expected bytes to be passed in as string, but got something else instead.'
);
return Blob.fromUint8Array(blob);
}
}
toVersion(version: SnapshotVersion): string {
return this.toTimestamp(version.toTimestamp());
}
fromVersion(version: string): SnapshotVersion {
assert(!!version, "Trying to deserialize version that isn't set");
return SnapshotVersion.fromTimestamp(this.fromTimestamp(version));
}
toResourceName(databaseId: DatabaseId, path: ResourcePath): string {
return this.fullyQualifiedPrefixPath(databaseId)
.child('documents')
.child(path)
.canonicalString();
}
fromResourceName(name: string): ResourcePath {
const resource = ResourcePath.fromString(name);
assert(
this.isValidResourceName(resource),
'Tried to deserialize invalid key ' + resource.toString()
);
return resource;
}
toName(key: DocumentKey): string {
return this.toResourceName(this.databaseId, key.path);
}
fromName(name: string): DocumentKey {
const resource = this.fromResourceName(name);
assert(
resource.get(1) === this.databaseId.projectId,
'Tried to deserialize key from different project: ' +
resource.get(1) +
' vs ' +
this.databaseId.projectId
);
assert(
(!resource.get(3) && !this.databaseId.database) ||
resource.get(3) === this.databaseId.database,
'Tried to deserialize key from different database: ' +
resource.get(3) +
' vs ' +
this.databaseId.database
);
return new DocumentKey(this.extractLocalPathFromResourceName(resource));
}
toQueryPath(path: ResourcePath): string {
if (path.length === 0) {
// If the path is empty, the backend requires we leave off the /documents
// at the end.
return this.encodedDatabaseId;
}
return this.toResourceName(this.databaseId, path);
}
fromQueryPath(name: string): ResourcePath {
const resourceName = this.fromResourceName(name);
if (resourceName.length === 4) {
return ResourcePath.EMPTY_PATH;
}
return this.extractLocalPathFromResourceName(resourceName);
}
get encodedDatabaseId(): string {
const path = new ResourcePath([
'projects',
this.databaseId.projectId,
'databases',
this.databaseId.database
]);
return path.canonicalString();
}
private fullyQualifiedPrefixPath(databaseId: DatabaseId): ResourcePath {
return new ResourcePath([
'projects',
databaseId.projectId,
'databases',
databaseId.database
]);
}
private extractLocalPathFromResourceName(
resourceName: ResourcePath
): ResourcePath {
assert(
resourceName.length > 4 && resourceName.get(4) === 'documents',
'tried to deserialize invalid key ' + resourceName.toString()
);
return resourceName.popFirst(5);
}
private isValidResourceName(path: ResourcePath): boolean {
// Resource names have at least 4 components (project ID, database ID)
return (
path.length >= 4 &&
path.get(0) === 'projects' &&
path.get(2) === 'databases'
);
}
toValue(val: fieldValue.FieldValue): api.Value {
if (val instanceof fieldValue.NullValue) {
return { nullValue: 'NULL_VALUE' };
} else if (val instanceof fieldValue.BooleanValue) {
return { booleanValue: val.value() };
} else if (val instanceof fieldValue.IntegerValue) {
return { integerValue: '' + val.value() };
} else if (val instanceof fieldValue.DoubleValue) {
const doubleValue = val.value();
Eif (this.options.useProto3Json) {
// Proto 3 let's us encode NaN and Infinity as string values as
// expected by the backend. This is currently not checked by our unit
// tests because they rely on protobuf.js.
if (isNaN(doubleValue)) {
return { doubleValue: 'NaN' } as {};
} else if (doubleValue === Infinity) {
return { doubleValue: 'Infinity' } as {};
} else Eif (doubleValue === -Infinity) {
return { doubleValue: '-Infinity' } as {};
}
}
return { doubleValue: val.value() };
} else if (val instanceof fieldValue.StringValue) {
return { stringValue: val.value() };
} else if (val instanceof fieldValue.ObjectValue) {
return { mapValue: this.toMapValue(val) };
} else if (val instanceof fieldValue.ArrayValue) {
return { arrayValue: this.toArrayValue(val) };
} else if (val instanceof fieldValue.TimestampValue) {
return {
timestampValue: this.toTimestamp(val.internalValue)
};
} else if (val instanceof fieldValue.GeoPointValue) {
return {
geoPointValue: {
latitude: val.value().latitude,
longitude: val.value().longitude
}
};
} else if (val instanceof fieldValue.BlobValue) {
return {
bytesValue: this.toBytes(val.value())
};
} else Eif (val instanceof fieldValue.RefValue) {
return {
referenceValue: this.toResourceName(val.databaseId, val.key.path)
};
} else {
return fail('Unknown FieldValue ' + JSON.stringify(val));
}
}
fromValue(obj: api.Value): fieldValue.FieldValue {
// tslint:disable-next-line:no-any
const type = (obj as any)['value_type'];
if (hasTag(obj, type, 'nullValue')) {
return fieldValue.NullValue.INSTANCE;
} else if (hasTag(obj, type, 'booleanValue')) {
return fieldValue.BooleanValue.of(obj.booleanValue!);
} else if (hasTag(obj, type, 'integerValue')) {
return new fieldValue.IntegerValue(parseInt64(obj.integerValue!));
} else if (hasTag(obj, type, 'doubleValue')) {
Eif (this.options.useProto3Json) {
// Proto 3 uses the string values 'NaN' and 'Infinity'.
if ((obj.doubleValue as {}) === 'NaN') {
return fieldValue.DoubleValue.NAN;
} else if ((obj.doubleValue as {}) === 'Infinity') {
return fieldValue.DoubleValue.POSITIVE_INFINITY;
} else Eif ((obj.doubleValue as {}) === '-Infinity') {
return fieldValue.DoubleValue.NEGATIVE_INFINITY;
}
}
return new fieldValue.DoubleValue(obj.doubleValue!);
} else if (hasTag(obj, type, 'stringValue')) {
return new fieldValue.StringValue(obj.stringValue!);
} else if (hasTag(obj, type, 'mapValue')) {
return this.fromFields(obj.mapValue!.fields || {});
} else if (hasTag(obj, type, 'arrayValue')) {
// "values" is not present if the array is empty
assertPresent(obj.arrayValue, 'arrayValue');
const values = obj.arrayValue!.values || [];
return new fieldValue.ArrayValue(values.map(v => this.fromValue(v)));
} else if (hasTag(obj, type, 'timestampValue')) {
assertPresent(obj.timestampValue, 'timestampValue');
return new fieldValue.TimestampValue(
this.fromTimestamp(obj.timestampValue!)
);
} else if (hasTag(obj, type, 'geoPointValue')) {
assertPresent(obj.geoPointValue, 'geoPointValue');
const latitude = obj.geoPointValue!.latitude || 0;
const longitude = obj.geoPointValue!.longitude || 0;
return new fieldValue.GeoPointValue(new GeoPoint(latitude, longitude));
} else if (hasTag(obj, type, 'bytesValue')) {
assertPresent(obj.bytesValue, 'bytesValue');
const blob = this.fromBlob(obj.bytesValue!);
return new fieldValue.BlobValue(blob);
} else Eif (hasTag(obj, type, 'referenceValue')) {
assertPresent(obj.referenceValue, 'referenceValue');
const resourceName = this.fromResourceName(obj.referenceValue!);
const dbId = new DatabaseId(resourceName.get(1), resourceName.get(3));
const key = new DocumentKey(
this.extractLocalPathFromResourceName(resourceName)
);
return new fieldValue.RefValue(dbId, key);
} else {
return fail('Unknown Value proto ' + JSON.stringify(obj));
}
}
/** Creates an api.Document from key and fields (but no create/update time) */
toMutationDocument(
key: DocumentKey,
fields: fieldValue.ObjectValue
): api.Document {
return {
name: this.toName(key),
fields: this.toFields(fields)
};
}
toDocument(document: Document): api.Document {
assert(
!document.hasLocalMutations,
"Can't serialize documents with mutations."
);
return {
name: this.toName(document.key),
fields: this.toFields(document.data),
updateTime: this.toTimestamp(document.version.toTimestamp())
};
}
fromDocument(document: api.Document): Document {
return new Document(
this.fromName(document.name!),
this.fromVersion(document.updateTime!),
this.fromFields(document.fields || {}),
{ hasLocalMutations: false }
);
}
toFields(fields: fieldValue.ObjectValue): { [key: string]: api.Value } {
const result: { [key: string]: api.Value } = {};
fields.forEach((key, value) => {
result[key] = this.toValue(value);
});
return result;
}
fromFields(object: {}): fieldValue.ObjectValue {
// Proto map<string, Value> gets mapped to Object, so cast it.
const map = object as { [key: string]: api.Value };
let result = fieldValue.ObjectValue.EMPTY;
obj.forEach(map, (key, value) => {
result = result.set(new FieldPath([key]), this.fromValue(value));
});
return result;
}
toMapValue(map: fieldValue.ObjectValue): api.MapValue {
return {
fields: this.toFields(map)
};
}
toArrayValue(array: fieldValue.ArrayValue): api.ArrayValue {
const result: api.Value[] = [];
array.forEach(value => {
result.push(this.toValue(value));
});
return { values: result };
}
private fromFound(doc: api.BatchGetDocumentsResponse): Document {
assert(
!!doc.found,
'Tried to deserialize a found document from a missing document.'
);
assertPresent(doc.found!.name, 'doc.found.name');
assertPresent(doc.found!.updateTime, 'doc.found.updateTime');
const key = this.fromName(doc.found!.name!);
const version = this.fromVersion(doc.found!.updateTime!);
const fields = this.fromFields(doc.found!.fields || {});
return new Document(key, version, fields, { hasLocalMutations: false });
}
private fromMissing(result: api.BatchGetDocumentsResponse): NoDocument {
assert(
!!result.missing,
'Tried to deserialize a missing document from a found document.'
);
assert(
!!result.readTime,
'Tried to deserialize a missing document without a read time.'
);
const key = this.fromName(result.missing!);
const version = this.fromVersion(result.readTime!);
return new NoDocument(key, version);
}
fromMaybeDocument(result: api.BatchGetDocumentsResponse): MaybeDocument {
// tslint:disable-next-line:no-any
const type = (result as any)['result'];
if (hasTag(result, type, 'found')) {
return this.fromFound(result);
} else Eif (hasTag(result, type, 'missing')) {
return this.fromMissing(result);
}
return fail('invalid batch get response: ' + JSON.stringify(result));
}
private toWatchTargetChangeState(
state: WatchTargetChangeState
): api.TargetChangeTargetChangeType {
switch (state) {
case WatchTargetChangeState.Added:
return 'ADD';
case WatchTargetChangeState.Current:
return 'CURRENT';
case WatchTargetChangeState.NoChange:
return 'NO_CHANGE';
case WatchTargetChangeState.Removed:
return 'REMOVE';
case WatchTargetChangeState.Reset:
return 'RESET';
default:
return fail('Unknown WatchTargetChangeState: ' + state);
}
}
toTestWatchChange(watchChange: WatchChange): api.ListenResponse {
if (watchChange instanceof ExistenceFilterChange) {
return {
filter: {
count: watchChange.existenceFilter.count,
targetId: watchChange.targetId
}
};
}
if (watchChange instanceof DocumentWatchChange) {
if (watchChange.newDoc instanceof Document) {
const doc = watchChange.newDoc;
return {
documentChange: {
document: {
name: this.toName(doc.key),
fields: this.toFields(doc.data),
updateTime: this.toVersion(doc.version)
},
targetIds: watchChange.updatedTargetIds,
removedTargetIds: watchChange.removedTargetIds
}
};
} else Iif (watchChange.newDoc instanceof NoDocument) {
const doc = watchChange.newDoc;
return {
documentDelete: {
document: this.toName(doc.key),
readTime: this.toVersion(doc.version),
removedTargetIds: watchChange.removedTargetIds
}
};
} else Eif (watchChange.newDoc === null) {
return {
documentRemove: {
document: this.toName(watchChange.key),
removedTargetIds: watchChange.removedTargetIds
}
};
}
}
Eif (watchChange instanceof WatchTargetChange) {
let cause: api.Status | undefined = undefined;
if (watchChange.cause) {
cause = {
code: mapRpcCodeFromCode(watchChange.cause.code),
message: watchChange.cause.message
};
}
return {
targetChange: {
targetChangeType: this.toWatchTargetChangeState(watchChange.state),
targetIds: watchChange.targetIds,
resumeToken: this.unsafeCastProtoByteString(watchChange.resumeToken),
cause
}
};
}
return fail('Unrecognized watch change: ' + JSON.stringify(watchChange));
}
fromWatchChange(change: api.ListenResponse): WatchChange {
// tslint:disable-next-line:no-any
const type = (change as any)['response_type'];
let watchChange: WatchChange;
if (hasTag(change, type, 'targetChange')) {
assertPresent(change.targetChange, 'targetChange');
// proto3 default value is unset in JSON (undefined), so use 'NO_CHANGE'
// if unset
const state = this.fromWatchTargetChangeState(
change.targetChange!.targetChangeType || 'NO_CHANGE'
);
const targetIds: TargetId[] = change.targetChange!.targetIds || [];
const resumeToken =
change.targetChange!.resumeToken || this.emptyByteString();
const causeProto = change.targetChange!.cause;
const cause = causeProto && this.fromRpcStatus(causeProto);
watchChange = new WatchTargetChange(
state,
targetIds,
resumeToken,
cause || null
);
} else if (hasTag(change, type, 'documentChange')) {
assertPresent(change.documentChange, 'documentChange');
assertPresent(change.documentChange!.document, 'documentChange.name');
assertPresent(
change.documentChange!.document!.name,
'documentChange.document.name'
);
assertPresent(
change.documentChange!.document!.updateTime,
'documentChange.document.updateTime'
);
const entityChange = change.documentChange!;
const key = this.fromName(entityChange.document!.name!);
const version = this.fromVersion(entityChange.document!.updateTime!);
const fields = this.fromFields(entityChange.document!.fields || {});
const doc = new Document(key, version, fields, {
hasLocalMutations: false
});
const updatedTargetIds = entityChange.targetIds || [];
const removedTargetIds = entityChange.removedTargetIds || [];
watchChange = new DocumentWatchChange(
updatedTargetIds,
removedTargetIds,
doc.key,
doc
);
} else if (hasTag(change, type, 'documentDelete')) {
assertPresent(change.documentDelete, 'documentDelete');
assertPresent(change.documentDelete!.document, 'documentDelete.document');
const docDelete = change.documentDelete!;
const key = this.fromName(docDelete.document!);
const version = docDelete.readTime
? this.fromVersion(docDelete.readTime)
: SnapshotVersion.forDeletedDoc();
const doc = new NoDocument(key, version);
const removedTargetIds = docDelete.removedTargetIds || [];
watchChange = new DocumentWatchChange([], removedTargetIds, doc.key, doc);
} else if (hasTag(change, type, 'documentRemove')) {
assertPresent(change.documentRemove, 'documentRemove');
assertPresent(change.documentRemove!.document, 'documentRemove');
const docRemove = change.documentRemove!;
const key = this.fromName(docRemove.document!);
const removedTargetIds = docRemove.removedTargetIds || [];
watchChange = new DocumentWatchChange([], removedTargetIds, key, null);
} else Eif (hasTag(change, type, 'filter')) {
// TODO(dimond): implement existence filter parsing with strategy.
assertPresent(change.filter, 'filter');
assertPresent(change.filter!.targetId, 'filter.targetId');
const filter = change.filter;
const count = filter!.count || 0;
const existenceFilter = new ExistenceFilter(count);
const targetId = filter!.targetId!;
watchChange = new ExistenceFilterChange(targetId, existenceFilter);
} else {
return fail('Unknown change type ' + JSON.stringify(change));
}
return watchChange;
}
fromWatchTargetChangeState(
state: api.TargetChangeTargetChangeType
): WatchTargetChangeState {
if (state === 'NO_CHANGE') {
return WatchTargetChangeState.NoChange;
} else if (state === 'ADD') {
return WatchTargetChangeState.Added;
} else if (state === 'REMOVE') {
return WatchTargetChangeState.Removed;
} else if (state === 'CURRENT') {
return WatchTargetChangeState.Current;
} else Eif (state === 'RESET') {
return WatchTargetChangeState.Reset;
} else {
return fail('Got unexpected TargetChange.state: ' + state);
}
}
versionFromListenResponse(change: api.ListenResponse): SnapshotVersion {
// We have only reached a consistent snapshot for the entire stream if there
// is a read_time set and it applies to all targets (i.e. the list of
// targets is empty). The backend is guaranteed to send such responses.
// tslint:disable-next-line:no-any
const type = (change as any)['response_type'];
if (!hasTag(change, type, 'targetChange')) {
return SnapshotVersion.MIN;
}
const targetChange = change.targetChange!;
if (targetChange.targetIds && targetChange.targetIds.length) {
return SnapshotVersion.MIN;
}
Iif (!targetChange.readTime) {
return SnapshotVersion.MIN;
}
return this.fromVersion(targetChange.readTime);
}
toMutation(mutation: Mutation): api.Write {
let result: api.Write;
if (mutation instanceof SetMutation) {
result = {
update: this.toMutationDocument(mutation.key, mutation.value)
};
} else if (mutation instanceof DeleteMutation) {
result = { delete: this.toName(mutation.key) };
} else if (mutation instanceof PatchMutation) {
result = {
update: this.toMutationDocument(mutation.key, mutation.data),
updateMask: this.toDocumentMask(mutation.fieldMask)
};
} else Eif (mutation instanceof TransformMutation) {
result = {
transform: {
document: this.toName(mutation.key),
fieldTransforms: mutation.fieldTransforms.map(transform =>
this.toFieldTransform(transform)
)
}
};
} else {
return fail('Unknown mutation type ' + mutation.type);
}
if (!mutation.precondition.isNone) {
result.currentDocument = this.toPrecondition(mutation.precondition);
}
return result;
}
fromMutation(proto: api.Write): Mutation {
const precondition = proto.currentDocument
? this.fromPrecondition(proto.currentDocument)
: Precondition.NONE;
if (proto.update) {
assertPresent(proto.update.name, 'name');
const key = this.fromName(proto.update.name!);
const value = this.fromFields(proto.update.fields || {});
if (proto.updateMask) {
const fieldMask = this.fromDocumentMask(proto.updateMask);
return new PatchMutation(key, value, fieldMask, precondition);
} else {
return new SetMutation(key, value, precondition);
}
} else if (proto.delete) {
const key = this.fromName(proto.delete);
return new DeleteMutation(key, precondition);
} else Eif (proto.transform) {
const key = this.fromName(proto.transform.document!);
const fieldTransforms = proto.transform.fieldTransforms!.map(transform =>
this.fromFieldTransform(transform)
);
assert(
precondition.exists === true,
'Transforms only support precondition "exists == true"'
);
return new TransformMutation(key, fieldTransforms);
} else {
return fail('unknown mutation proto: ' + JSON.stringify(proto));
}
}
private toPrecondition(precondition: Precondition): api.Precondition {
assert(!precondition.isNone, "Can't serialize an empty precondition");
if (precondition.updateTime !== undefined) {
return {
updateTime: this.toVersion(precondition.updateTime)
};
} else Eif (precondition.exists !== undefined) {
return { exists: precondition.exists };
} else {
return fail('Unknown precondition');
}
}
private fromPrecondition(precondition: api.Precondition): Precondition {
Iif (precondition.updateTime !== undefined) {
return Precondition.updateTime(this.fromVersion(precondition.updateTime));
} else Eif (precondition.exists !== undefined) {
return Precondition.exists(precondition.exists);
} else {
return Precondition.NONE;
}
}
private fromWriteResult(proto: api.WriteResult): MutationResult {
// NOTE: Deletes don't have an updateTime.
const version = proto.updateTime
? this.fromVersion(proto.updateTime)
: null;
let transformResults: fieldValue.FieldValue[] | null = null;
if (proto.transformResults && proto.transformResults.length > 0) {
transformResults = proto.transformResults.map(result =>
this.fromValue(result)
);
}
return new MutationResult(version, transformResults);
}
fromWriteResults(protos: api.WriteResult[] | undefined): MutationResult[] {
return (protos || []).map(proto => this.fromWriteResult(proto));
}
private toFieldTransform(fieldTransform: FieldTransform): api.FieldTransform {
assert(
fieldTransform.transform instanceof ServerTimestampTransform,
'Unknown transform: ' + fieldTransform.transform
);
return {
fieldPath: fieldTransform.field.canonicalString(),
setToServerValue: 'REQUEST_TIME'
};
}
private fromFieldTransform(proto: api.FieldTransform): FieldTransform {
assert(
proto.setToServerValue! === 'REQUEST_TIME',
'Unknown transform proto: ' + JSON.stringify(proto)
);
const fieldPath = FieldPath.fromServerFormat(proto.fieldPath!);
return new FieldTransform(fieldPath, ServerTimestampTransform.instance);
}
toDocumentsTarget(query: Query): api.DocumentsTarget {
return { documents: [this.toQueryPath(query.path)] };
}
fromDocumentsTarget(documentsTarget: api.DocumentsTarget): Query {
const count = documentsTarget.documents!.length;
assert(
count === 1,
'DocumentsTarget contained other than 1 document: ' + count
);
const name = documentsTarget.documents![0];
return Query.atPath(this.fromQueryPath(name));
}
toQueryTarget(query: Query): api.QueryTarget {
// Dissect the path into parent, collectionId, and optional key filter.
const result: api.QueryTarget = { structuredQuery: {} };
Iif (query.path.isEmpty()) {
result.parent = this.toQueryPath(ResourcePath.EMPTY_PATH);
} else {
const path = query.path;
assert(
path.length % 2 !== 0,
'Document queries with filters are not supported.'
);
result.parent = this.toQueryPath(path.popLast());
result.structuredQuery!.from = [{ collectionId: path.lastSegment() }];
}
const where = this.toFilter(query.filters);
if (where) {
result.structuredQuery!.where = where;
}
const orderBy = this.toOrder(query.orderBy);
Eif (orderBy) {
result.structuredQuery!.orderBy = orderBy;
}
const limit = this.toInt32Value(query.limit);
if (limit !== undefined) {
result.structuredQuery!.limit = limit;
}
if (query.startAt) {
result.structuredQuery!.startAt = this.toCursor(query.startAt);
}
if (query.endAt) {
result.structuredQuery!.endAt = this.toCursor(query.endAt);
}
return result;
}
fromQueryTarget(target: api.QueryTarget): Query {
let path = this.fromQueryPath(target.parent!);
const query = target.structuredQuery!;
const fromCount = query.from ? query.from.length : 0;
Eif (fromCount > 0) {
assert(
fromCount === 1,
'StructuredQuery.from with more than one collection is not supported.'
);
const from = query.from![0];
path = path.child(from.collectionId!);
}
let filterBy: Filter[] = [];
if (query.where) {
filterBy = this.fromFilter(query.where);
}
let orderBy: OrderBy[] = [];
Eif (query.orderBy) {
orderBy = this.fromOrder(query.orderBy);
}
let limit: number | null = null;
if (query.limit) {
limit = this.fromInt32Value(query.limit);
}
let startAt: Bound | null = null;
if (query.startAt) {
startAt = this.fromCursor(query.startAt);
}
let endAt: Bound | null = null;
if (query.endAt) {
endAt = this.fromCursor(query.endAt);
}
return new Query(path, orderBy, filterBy, limit, startAt, endAt);
}
toListenRequestLabels(
queryData: QueryData
): ApiClientObjectMap<string> | null {
const value = this.toLabel(queryData.purpose);
if (value == null) {
return null;
} else {
return {
'goog-listen-tags': value
};
}
}
private toLabel(purpose: QueryPurpose): string | null {
switch (purpose) {
case QueryPurpose.Listen:
return null;
case QueryPurpose.ExistenceFilterMismatch:
return 'existence-filter-mismatch';
case QueryPurpose.LimboResolution:
return 'limbo-document';
default:
return fail('Unrecognized query purpose: ' + purpose);
}
}
toTarget(queryData: QueryData): api.Target {
let result: api.Target;
const query = queryData.query;
if (query.isDocumentQuery()) {
result = { documents: this.toDocumentsTarget(query) };
} else {
result = { query: this.toQueryTarget(query) };
}
result.targetId = queryData.targetId;
if (queryData.resumeToken.length > 0) {
result.resumeToken = this.unsafeCastProtoByteString(
queryData.resumeToken
);
}
return result;
}
private toFilter(filters: Filter[]): api.Filter | undefined {
if (filters.length === 0) return;
const protos = filters.map(
filter =>
filter instanceof RelationFilter
? this.toRelationFilter(filter)
: this.toUnaryFilter(filter)
);
if (protos.length === 1) {
return protos[0];
}
return { compositeFilter: { op: 'AND', filters: protos } };
}
private fromFilter(filter: api.Filter | undefined): Filter[] {
Iif (!filter) {
return [];
} else if (filter.unaryFilter !== undefined) {
return [this.fromUnaryFilter(filter)];
} else if (filter.fieldFilter !== undefined) {
return [this.fromRelationFilter(filter)];
} else Eif (filter.compositeFilter !== undefined) {
return filter.compositeFilter.filters!
.map(f => this.fromFilter(f))
.reduce((accum, current) => accum.concat(current));
} else {
return fail('Unknown filter: ' + JSON.stringify(filter));
}
}
private toOrder(orderBys: OrderBy[]): api.Order[] | undefined {
Iif (orderBys.length === 0) return;
return orderBys.map(order => this.toPropertyOrder(order));
}
private fromOrder(orderBys: api.Order[]): OrderBy[] {
return orderBys.map(order => this.fromPropertyOrder(order));
}
private toCursor(cursor: Bound): api.Cursor {
return {
before: cursor.before,
values: cursor.position.map(component => this.toValue(component))
};
}
private fromCursor(cursor: api.Cursor): Bound {
const before = !!cursor.before;
const position = cursor.values!.map(component => this.fromValue(component));
return new Bound(position, before);
}
// visible for testing
toDirection(dir: Direction): api.OrderDirection {
return DIRECTIONS[dir.name];
}
// visible for testing
fromDirection(dir: api.OrderDirection | undefined): Direction | undefined {
switch (dir) {
case 'ASCENDING':
return Direction.ASCENDING;
case 'DESCENDING':
return Direction.DESCENDING;
default:
return undefined;
}
}
// visible for testing
toOperatorName(op: RelationOp): api.FieldFilterOp {
return OPERATORS[op.name];
}
fromOperatorName(op: api.FieldFilterOp): RelationOp {
switch (op) {
case 'EQUAL':
return RelationOp.EQUAL;
case 'GREATER_THAN':
return RelationOp.GREATER_THAN;
case 'GREATER_THAN_OR_EQUAL':
return RelationOp.GREATER_THAN_OR_EQUAL;
case 'LESS_THAN':
return RelationOp.LESS_THAN;
case 'LESS_THAN_OR_EQUAL':
return RelationOp.LESS_THAN_OR_EQUAL;
case 'OPERATOR_UNSPECIFIED':
return fail('Unspecified relation');
default:
return fail('Unknown relation');
}
}
toFieldPathReference(path: FieldPath): api.FieldReference {
return { fieldPath: path.canonicalString() };
}
fromFieldPathReference(fieldReference: api.FieldReference): FieldPath {
return FieldPath.fromServerFormat(fieldReference.fieldPath!);
}
// visible for testing
toPropertyOrder(orderBy: OrderBy): api.Order {
return {
field: this.toFieldPathReference(orderBy.field),
direction: this.toDirection(orderBy.dir)
};
}
fromPropertyOrder(orderBy: api.Order): OrderBy {
return new OrderBy(
this.fromFieldPathReference(orderBy.field!),
this.fromDirection(orderBy.direction)
);
}
// visible for testing
toRelationFilter(filter: Filter): api.Filter {
Eif (filter instanceof RelationFilter) {
return {
fieldFilter: {
field: this.toFieldPathReference(filter.field),
op: this.toOperatorName(filter.op),
value: this.toValue(filter.value)
}
};
} else {
return fail('Unrecognized filter: ' + JSON.stringify(filter));
}
}
fromRelationFilter(filter: api.Filter): Filter {
return new RelationFilter(
this.fromFieldPathReference(filter.fieldFilter!.field!),
this.fromOperatorName(filter.fieldFilter!.op!),
this.fromValue(filter.fieldFilter!.value!)
);
}
// visible for testing
toUnaryFilter(filter: Filter): api.Filter {
if (filter instanceof NanFilter) {
return {
unaryFilter: {
field: this.toFieldPathReference(filter.field),
op: 'IS_NAN'
}
};
} else Eif (filter instanceof NullFilter) {
return {
unaryFilter: {
field: this.toFieldPathReference(filter.field),
op: 'IS_NULL'
}
};
} else {
return fail('Unrecognized filter: ' + JSON.stringify(filter));
}
}
fromUnaryFilter(filter: api.Filter): Filter {
switch (filter.unaryFilter!.op!) {
case 'IS_NAN':
const nanField = this.fromFieldPathReference(
filter.unaryFilter!.field!
);
return new NanFilter(nanField);
case 'IS_NULL':
const nullField = this.fromFieldPathReference(
filter.unaryFilter!.field!
);
return new NullFilter(nullField);
case 'OPERATOR_UNSPECIFIED':
return fail('Unspecified filter');
default:
return fail('Unknown filter');
}
}
toDocumentMask(fieldMask: FieldMask): api.DocumentMask {
return {
fieldPaths: fieldMask.fields.map(field => field.canonicalString())
};
}
fromDocumentMask(proto: api.DocumentMask): FieldMask {
const paths = proto.fieldPaths || [];
const fields = paths.map(path => FieldPath.fromServerFormat(path));
return new FieldMask(fields);
}
}
/**
* Checks for a specific oneof tag in a protocol buffer message.
*
* This intentionally accommodates two distinct cases:
*
* 1) Messages containing a type tag: these are the format produced by GRPC in
* return values. These may contain default-value mappings for all tags in the
* oneof but the type tag specifies which one was actually set.
*
* 2) Messages that don't contain a type tag: these are the format required by
* GRPC as inputs. If we emitted objects with type tags, ProtoBuf.js would
* choke claiming that the tags aren't fields in the Message.
*
* Allowing both formats here makes the serializer able to consume the outputs
* it produces: for all messages it supports, fromX(toX(value)) == value.
*
* Note that case 2 suffers from ambiguity: if multiple tags are present
* without a type tag then the callers are structured in such a way that the
* first invocation will win. Since we only parse in this mode when parsing
* the output of a serialize method this works, but it's not a general
* solution.
*
* Unfortunately there is no general solution here because proto3 makes it
* impossible to distinguish unset from explicitly set fields: both have the
* default value for the type. Without the type tag but multiple value tags
* it's possible to have default values for each tag in the oneof and not be
* able to know which was actually in effect.
*/
function hasTag(obj: {}, type: string, tag: string): boolean {
return type === tag || (!type && tag in obj);
}
|