data sync by mohitpubnub · Pull Request #498 · pubnub/javascript

mohitpubnub · 2026-05-22T08:07:36Z

feat(dataSync): Support for dataSync feature.

Added dataSync feature support.

fix(listeners): discard unknown event types

No listener callback will be triggered for event with unknown event types

fix: all events from presence channels will be categorised as presence event

all events from the presence channels will be categorised as presence event

…ases, include PUT type where needed. update body include cases when body present while making http requests.

… definition, updated pubnub-common file to have datasync apis support

coderabbitai · 2026-05-22T08:07:50Z

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📝 Walkthrough

Walkthrough

The test workflow now maps three Data Streams secrets to environment variables. It also reports whether DS_SUBSCRIBE_KEY is set before tests run.

Changes

Data Streams workflow configuration

Layer / File(s)	Summary
Configure Data Streams test environment `.github/workflows/run-tests.yml`	The workflow adds subscription, publish, and secret key variables from GitHub secrets. It reports whether `DS_SUBSCRIBE_KEY` is set before tests run.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: 🟡 Moderate · up to 9f531

The workflow adds Data Streams credentials for testing, but they remain available across the entire job, increasing exposure if a dependency or action is compromised. Narrow secret scope before merging.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title directly identifies the main change: adding data sync support. It is concise and related to the pull request objective.
Description check	✅ Passed	The description explains dataSync support and listener behavior changes. It is related to the changeset and objectives.

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pubnub-ops-terraform · 2026-05-22T08:07:56Z

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Inline comments:
In @.github/CODEOWNERS:
- Line 1: The CODEOWNERS entry currently lists "jguz-pubnub" without the
required @ prefix; update the owner token on the same line so it reads
"`@jguz-pubnub`" (i.e., change the token "jguz-pubnub" to "`@jguz-pubnub`") to
ensure GitHub recognizes the user; locate the line containing "*        
`@mohitpubnub` `@parfeon` jguz-pubnub" and add the missing @ before jguz-pubnub.

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.github/CODEOWNERS

…put accepted

…y not typinf domain keywords during parameter property inputs, update method name conventions to align with existing methods. update parse token to parse dataSync related permissions and projection definitions details. added more patch operation variants which are supported.

TEST SETUP- added secrets for dataSync tests.

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Actionable comments posted: 1

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Inline comments:
In @.github/workflows/run-tests.yml:
- Around line 19-22: Move DS_SUBSCRIBE_KEY, DS_PUBLISH_KEY, DS_SECRET_KEY, and
DS_ORIGIN from workflow-level environment configuration into the specific test
step that runs npm scripts. Separate npm install from npm run if needed so
dependency installation and unrelated steps cannot access these secrets.

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.github/workflows/run-tests.yml

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parfeon

Small changes are needed

parfeon · 2026-09-03T07:07:19Z

+            const retriableError = !error || error.category !== StatusCategory.PNCancelledCategory;
+            const statusCode = error?.statusCode;
+            const retriableStatusCode =
+              (!res || res.status >= 400) && !NON_RETRIABLE_STATUS_CODES.includes(statusCode as number);


Can we delegate all this to the shouldRetry call?
It already check for retriable error (where PNCancelledCategory is not retriable) and also checks for retriable status codes where 404 and 409 is not retriable (special case only for 429 and >=500).

required changes applied, now the decision about whether to retry or not is completely at shouldRetry()

parfeon · 2026-09-03T07:59:39Z

+  /**
+   * Format a user-facing error message for this API error.
+   *
+   * When the error contains structured details extracted from the service response
+   * (e.g., DataSync `errors` array), those details are included in the message.
+   * Otherwise, falls back to a generic description.
+   *
+   * @param operation - Request operation during which error happened.
+   *
+   * @returns Formatted error message string.
+   */
+  public toFormattedMessage(operation: RequestOperation): string {
+    const fallback = 'REST API request processing error, check status for details';
+
+    // When errorData contains a structured `errors` array, `this.message` was already
+    // constructed from it in `createFromServiceResponse` — prefer it over the generic fallback.
+    if (
+      this.errorData &&
+      typeof this.errorData === 'object' &&
+      !('name' in this.errorData && 'message' in this.errorData && 'stack' in this.errorData) &&
+      'errors' in this.errorData &&
+      Array.isArray((this.errorData as Record<string, unknown>).errors)
+    ) {
+      return `${operation}: ${this.message}`;
+    }
+
+    return fallback;
+  }
+


I believe we do have logic somewhere else, which is capable to print our errors. Shouldn't we just try to normalize structure to follow the contracts? Or there is no way for it?

Agree, I updated the error response handling (actually merged with existing mechanism)

parfeon · 2026-09-03T08:51:32Z

+  private extractDataSyncPermissions(permissions: number): PAM.DataSyncPermissions {
+    return {
+      create: (permissions & 16) === 16,
+      get: (permissions & 32) === 32,
+      update: (permissions & 64) === 64,
+      delete: (permissions & 8) === 8,
+    };
+  }


Is there a reason to have two of these functions?

parfeon · 2026-09-03T09:12:33Z

   * @internal
   */
-  override get entityType(): 'Channel' | 'ChannelGroups' | 'ChannelMetadata' | 'UserMetadata' {
+  override get entityType(): 'UserMetadata' {


In src/entities/entity.ts as a return type we have EntityType and here we have a literal - is it intentional?

Yes, intentional. Every concrete entity narrows to its own literal (Channel, ChannelGroups, ChannelMetadata, all five DataSync*) — only the abstract base and EntityInterface return the wide EntityType, since they describe all of them.

parfeon · 2026-09-03T09:30:53Z

+ * {@link UserTokenPermissions}: only the CRUD-relevant operations apply, so `read` / `write` /
+ * `manage` / `join` are intentionally not part of this type.
+ */
+export type UserScopePermissions = {


Should it have DataSync prefix in the type name?

From grantToken perspective:
There will only be one type of User and that will be of dataSync type only. So no explicit prefix in grantToken.
which is same for channels as well.

During permission configuration the type is now DataSyncPermissions so api consumer has information which all permissions can be specified

parfeon · 2026-09-03T09:47:03Z

+  /**
+   * Registry of the entities which observe the same DataSync object through different projections.
+   *
+   * The registry is **shared** by all entities created for the same object (keyed by normalized
+   * projection name, with {@link BASE_PROJECTION_KEY} used for the base projection), so a specific
+   * (object, projection) pair is always represented by a single entity instance. That is required
+   * for correct per-entity subscription ref-counting: {@link Entity#subscriptionsCount} is what
+   * {@link Subscription#subscriptionInput} uses to decide whether a channel may leave the
+   * subscription loop.
+   *
+   * @internal
+   */
+  private variants?: Record<string, DataSyncSubscribable | undefined>;


Why we can't rely on this.entities in PubNub client core? Will entity usage work properly with this approach and won't let unsubscribe if there is other subscription object which still use DS entity?

the reason was - this.entities is keyed ${id}_dsu / _dsc / … with no projection component (pubnub-common.ts:1034-1113). Projection is chosen per-subscription (subscription({ projection })), not per-entity, so the core cache physically cannot distinguish u1/base from u1/admin.

Will entity usage work properly with this approach and won't let unsubscribe if there is other subscription object which still use DS entity

yes, that is confirmed and tests were added to confirm this.

parfeon · 2026-09-07T09:10:08Z

+    if (!this.parameters.userId) return 'User id cannot be empty';
+    if (!this.parameters.channelId) return 'Channel id cannot be empty';
+    if (!this.parameters.data) return 'Membership data cannot be empty';
+    if (!this.parameters.data.classVersion) return 'Relationship class version cannot be empty';


Suggested change

if (!this.parameters.data.classVersion) return 'Relationship class version cannot be empty';

if (!this.parameters.data.classVersion) return 'Membership class version cannot be empty';

parfeon · 2026-09-07T09:10:21Z

+    if (!this.parameters.userId) return 'User id cannot be empty';
+    if (!this.parameters.channelId) return 'Channel id cannot be empty';
+    if (!this.parameters.data) return 'Membership data cannot be empty';
+    if (!this.parameters.data.classVersion) return 'Relationship class version cannot be empty';


Suggested change

if (!this.parameters.data.classVersion) return 'Relationship class version cannot be empty';

if (!this.parameters.data.classVersion) return 'Membership class version cannot be empty';

…houldRetry function

…reating new formatted error message.

…en_manager, additional validation to not allow spaces and uuid permission specification together

…assLevel parameters fix validation message for membership create and set apis

…d in reponse

…ence count tests

…p tests, additional tests for patch or json pointers, tests for user, entity, membershi and relationship crud

…nfiguration update for dataSync tests

… fixes existing tests which were affected by nock setup.

parfeon

LGTM!

parfeon

LGTM!

…pertaion events

Mohit Tejani added 9 commits May 22, 2026 13:27

pre-requisites for data_sync: handle error array during exceptional c…

0c83fb4

…ases, include PUT type where needed. update body include cases when body present while making http requests.

data-sync: channel endpoint apis

5502af9

data-sync:user endpoint apis

ea6da83

data-sync:membership endpoint apis

f128cbc

data-sync: entity endpoint apis

fbe3e3c

data-sync: entity-relationship endpoint apis

8734092

data-sync: apis domain object export, added operation constants, type…

1843165

… definition, updated pubnub-common file to have datasync apis support

updated dist/lib and codeowner files.

7a5a27f

fix lint

e82c07a

coderabbitai Bot reviewed May 22, 2026

View reviewed changes

Comment thread .github/CODEOWNERS Outdated

mohitpubnub and others added 6 commits May 22, 2026 13:40

Fix CODEOWNERS syntax for jguz-pubnub

f57123e

dataSync relationship api for getAll should have class and version in…

3876080

…put accepted

sync package.json with latest

adbfa29

fix type definition for getAllRelationships

fd1b9e4

Merge branch 'master' into CLEN-3438

66391b4

Merge branch 'master' into CLEN-3438

97152c2

mohitpubnub marked this pull request as ready for review June 25, 2026 08:33

mohitpubnub requested review from jguz-pubnub and parfeon as code owners June 25, 2026 08:33

Mohit Tejani and others added 9 commits July 10, 2026 14:57

datasync event handling, grantToken update for datasync permissions

4be5002

remove idempotencyKey from datasync apis

25eb24d

Merge branch 'master' into CLEN-3438

f51c1dc

lint fixes

6d2d137

Merge branch 'master' into CLEN-3438

2d6a210

handling user/channel/membership events in subscription

c5be680

lib files

8d7f54f

dist/lib updates

7fa7586

mohitpubnub added 3 commits September 3, 2026 13:07

filter parameter renaming for dataSync get apis

f8425b7

description change for sort param in dataSync

fe94998

TEST(dataSync): channels crud, projection tests added and test helpers.

6b926d4

TEST SETUP- added secrets for dataSync tests.

coderabbitai Bot reviewed Sep 4, 2026

View reviewed changes

Comment thread .github/workflows/run-tests.yml Outdated

parfeon requested changes Sep 7, 2026

View reviewed changes

mohitpubnub added 15 commits September 7, 2026 17:55

refactor(retry-decision): moved status code based retry decision to s…

9381d57

…houldRetry function

dataSync error normalised with pubnub-api-error convention, instead c…

6aa30c3

…reating new formatted error message.

PAM extension (refactor): unified permission extraction method at tok…

7131213

…en_manager, additional validation to not allow spaces and uuid permission specification together

dataSync fixes - getUsers, getChannels, getEntities support class, cl…

8d41e08

…assLevel parameters fix validation message for membership create and set apis

dataSync type definition update: expiresAt is mandatory field receive…

0309c98

…d in reponse

test(PAM): access manager test updates with additional validation

80c5f22

test(dataSync subscription): dataSync entity subscription based refer…

06385c2

…ence count tests

test(dataSync) update channels tests using mocked response to speed u…

954bcbc

…p tests, additional tests for patch or json pointers, tests for user, entity, membershi and relationship crud

.pubnub.yml updates for dataSync

5fdd27d

update configuration as custom origin not needed for dataSync tests

c801cc8

test(fix) for membership error assertion, test fix for projection, co…

7837888

…nfiguration update for dataSync tests

test environment variable configuration update

e17c7b5

test config, dataSync environment configuration

9f531f3

reverted run-tests workflow changes, added tests for dataSync events,…

b04a75e

… fixes existing tests which were affected by nock setup.

dist/lib updates

5b07221

mohitpubnub requested a review from parfeon September 7, 2026 18:49

parfeon approved these changes Sep 8, 2026

View reviewed changes

mohitpubnub added 2 commits September 8, 2026 12:06

dataSync parameter naming sync for get*s operation

bb98219

dist/lib updates

03239d2

mohitpubnub requested a review from parfeon September 8, 2026 06:40

mohitpubnub added status: done This issue is considered resolved. javascript Pull requests that update javascript code labels Sep 8, 2026

parfeon approved these changes Sep 8, 2026

View reviewed changes

mohitpubnub added 2 commits September 8, 2026 21:08

update dataSync event type parsing for user, channel and membership o…

8997be8

…pertaion events

dist/lib updates

fb8ffcf

	if (!this.parameters.data.classVersion) return 'Relationship class version cannot be empty';
	if (!this.parameters.data.classVersion) return 'Membership class version cannot be empty';

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mohitpubnub commented May 22, 2026 •

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