Specific Changes

• Update SDK version by @bergundy in #1558

Nexus pre-release

⚠️ EXPERIMENTAL - APIs may change in a future release ⚠️

See the proposal for usage instructions.

Self hosted users can try Nexus out in single cluster deployments with server version 1.25.0-rc.0 - not meant for production use.

Temporal Cloud users may reach out and open a support ticket to request access to the pre-release.

To use Nexus with the temporal CLI dev server:

1. download CLI 0.14.0-nexus.0 to the current directory:

   curl -sSf https://temporal.download/cli.sh | sh -s -- --version v0.14.0-nexus.0 --dir .
   

2. run the dev server with the required configs:

   ./temporal server start-dev --dynamic-config-value system.enableNexus=true --http-port 7243
   

Warn on unfinished handlers

The SDK will now WARN by default if a workflow is completed by the SDK with unfinished update handlers. Users can use workflow.AllHandlersFinished to wait for all handlers to be finished or set UnfinishedPolicy in UpdateHandlerOptions.

Add Workflow safe Mutex and Semaphore

This release includes new helper interfaces workflow.Mutex and workflow.Semaphore that are workflow safe versions of a mutex and semaphore. These interfaces are to help users synchronize sensitive business logic across multiple coroutines or update handlers.

What's Changed

• Clean up docs for NextRetryDelay by @Quinn-With-Two-Ns in #1522
• Update some docs around grpc Dial options by @Quinn-With-Two-Ns in #1514
• Wrap GRPC::CANCELED and DEADLINE_EXCEEDED in an SDK Timeout exception… by @Quinn-With-Two-Ns in #1524
• Use grpc context for GetSystemInfo. by @Quinn-With-Two-Ns in #1528
• Add option to handle scream snake case enums. by @Quinn-With-Two-Ns in #1529
• Add workflow safe Mutex and Semaphore by @Quinn-With-Two-Ns in #1530
• Ensure our proxy helpers forward metadata by @Quinn-With-Two-Ns in #1531
• Point feature repo back to main by @Quinn-With-Two-Ns in #1532
• Warn on unhandled updates by @Quinn-With-Two-Ns in #1533
• Experimental cloud operations client by @cretz in #1462
• add Name method to ReceiveChannel and SendChannel interface by @bentveljanzx in #1538
• Test AllHandlersFinished in update validator by @Quinn-With-Two-Ns in #1540
• Fix some Deprecated go docs by @Quinn-With-Two-Ns in #1542
• Fix bug in updateWorkflowByID by @Quinn-With-Two-Ns in #1548
• Fix typed search attributes with SignalWithStartWorkflow by @Quinn-With-Two-Ns in #1552
• Add support for query parameter when listing schedules by @justinp-tt in #1556
• Nexus by @bergundy in #1555

Reset workflow with Updates

The Go SDK now supports reapplying Workflow Updates when resetting a workflow execution.

Note: Support for reapplying updates on workflow reset require a server version ≥1.24.0

Request failure code labeled metrics

gRPC request failure metrics (*request_failure) emitted by the Go SDK now include the error status code as a tag under status_code. This can be disabled by setting DisableErrorCodeMetricTags on client.Options.

See also: #1472

💥 BREAKING CHANGES

This release includes some breaking changes for the experimental features Workflow Update and Worker Versioning. Users of these features should read the release notes carefully before upgrading.

Workflow Update (Experimental)

Based on users feedback this release makes some breaking changes to the Workflow Update API used by client and workflows code.

Client API changes

• Merged Client.UpdateWorkflowWithOptions and Client.UpdateWorkflow into one API called Client.UpdateWorkflow that takes a client.UpdateWorkflowOptions struct.
• WaitPolicy in client.UpdateWorkflowOptions was replaced with WaitForStage. WaitForStage is now a required parameter in client.UpdateWorkflowOptions.
• WaitForStage is now properly respected by Client.UpdateWorkflow. Previously Client.UpdateWorkflow may have returned a handle before the desired WaitForStage was reached.

Workflow API changes

• workflow.SetUpdateHandler and workflow.SetUpdateHandlerWithOptions Now require update handles to take a workflow.Context as the first argument.
• workflow.GetUpdateInfo has been renamed to workflow.GetCurrentUpdateInfo .

Worker Versioning (Experimental)

Worker Versioning is a pre-release, experimental feature that simplifies managing code changes by allowing you to peg workflows to build versions. This change revamps and improves the API and deprecates the existing experience.

The new APIs introduced with worker versioning are:

• GetWorkerVersioningRules returns assignment and redirect rules for a given task queue.
• UpdateWorkerVersioningRules updates assignment and redirect rules for a given task queue.
• DescribeTaskQueueEnhanced extends the functionality of DescribeTaskQueue with workflow reachability status.

A few APIs associated with legacy worker versioning have been deprecated:

• UpdateWorkerBuildIdCompatibility replaced by UpdateWorkerVersioningRules.
• GetWorkerBuildIdCompatibility replaced by GetWorkerVersioningRules.
• GetWorkerTaskReachability replaced by DescribeTaskQueueEnhanced.

Note: These new Worker Versioning APIs require a server version ≥1.24.0

Internally call grpc.NewClient instead of grpc.Dial

Internally the SDK now calls grpc.NewClient instead of grpc.Dial because it was deprecated in google.golang.org/grpc

This should be a transparent change to most users, google.golang.org/grpc does call out one subtle difference:

One subtle difference between NewClient and Dial and DialContext is that the former uses "dns" as the default name resolver, while the latter use "passthrough" for backward compatibility. This distinction should not matter to most users, but could matter to legacy users that specify a custom dialer and expect it to receive the target string directly.

Some deprecated dial options like WithBlock, WithTimeout, WithReturnConnectionError, and FailOnNonTempDialError are now ignored by grpc.NewClient. See https://github.com/grpc/grpc-go/blob/master/Documentation/anti-patterns.md for more context.

See also: #1488

Child workflows now properly Continue-As-New in the TestWorkflowEnvironment

In previous version of the Go SDK when a child workflow running in the test environment tried to continue as new the parent workflow would receive an error from the child workflow. Now the child workflow properly continues as new and the parent workflow will not receive an error.

See also: #1437

Specific Changes

2024-04-12 - c4bf074 - datadog: Add tracer option to check error eligibility in the span (#1438)
2024-04-17 - 69bc6c3 - Update reapply (#1436)
2024-04-23 - 93c08b0 - Ensure consistent labels for rpc metrics (#1444)
2024-04-24 - 8361067 - Disable UTF8-invalid tests when running CLI dev server (#1448)
2024-04-30 - fe44a47 - Improve error message for missing body (#1451)
2024-05-01 - d051de6 - Option to redirect devserver stdout/stderr to a file (#1452)
2024-05-09 - 386a6d3 - Require update handler to have a context (#1457)
2024-05-09 - ded70a3 - Add support for NextRetryDelay for local activities (#1456)
2024-05-10 - 81cd5dc - Fix QueryRejectCondition parameter in QueryWorkflowWithOptions (#1461)
2024-05-10 - c69831e - Remove DisableStickyExecution (#1464)
2024-05-14 - 3b68c6d - Add request failure code label to metrics (#1472)
2024-05-17 - aa17647 - get-free-port: prevent duplicate ports on Linux (#1478)
2024-05-21 - 06c0ebc - Add SetFailureConverter to the activity and workflow test environments (#1484)
2024-05-21 - 222d4cf - Fix gauge metrics with latest otel SDK (#1482)
2024-05-21 - 725b428 - Only record activity_succeed_endtoend_latency on success (#1481)
2024-05-21 - fb06909 - Send original update request back in response (#1480)
2024-05-22 - bf2c79d - Switch to using Float64Gauge in otel integration (#1485)
2024-05-24 - a6ca6a5 - Replace grpc.Dial with grpc.NewClient (#1488)
2024-05-28 - bcfa85a - Workflow update client API refactor (#1489)
2024-05-31 - 486c233 - Minor logger improovments (#1495)
2024-05-31 - 4dd1ed8 - Fix bugs when using a custom FailureConverter in tests (#1490)
2024-06-06 - 0df7ad5 - Bump GitHub Actions (#1503)
2024-06-06 - 17193aa - Manually copy proxy options (#1502)
2024-06-06 - 5c171b7 - Make backfill tests more robust (#1504)
2024-06-06 - 9ecb2a4 - Change GetUpdateInfo to GetCurrentUpdateInfo (#1505)
2024-06-06 - bf29944 - testsuite.StartDevServer: Respect timeout during dial (#1498)
2024-06-07 - c73a007 - Support the new versioning API (#1494)
2024-06-10 - d4ff1f6 - Fix flake in TestUpdateAdmittedNoWorker (#1506)
2024-06-12 - 38fe879 - Always run all the versioning tests (#1510)
2024-06-12 - a7c8208 - Allow SDK to handle speculative WFT with command events (#1509)
2024-06-13 - 2720358 - Improve CI action (#1512)
2024-06-13 - 30a29ce - Add integration test for reset with update events (#1507)
2024-06-13 - 4c8b9e1 - Update API to v1.34.0 (#1511)

Highlights

Bugfixes

Fixes a bug with typed search attributes for child workflows not being properly applied to new child workflow executions.

Specific Changes

2024-03-12 - 9c42221 - Make client Dial context controlable by callers (#1416)
2024-03-13 - 03d7704 - Update readme badge to github action (#1422)
2024-03-18 - 3da09e0 - Switch github runner to macos-14 (m1) (#1421)
2024-03-25 - 00fd4cd - Remove experimental flag from Start Delay (#1428)
2024-04-04 - 0cfdccb - Clarified description of workflow.Now (#1430)
2024-04-08 - 108aac8 - Fix support for typed search attributes in child workflow options (#1434)
2024-04-09 - a02b92e - Add support for unit testing child workflows that call continue-as-new (#1437)
2024-04-10 - 0007eee - Bump api-go to 1.32.0 to include Versioning 2 API changes (#1439)

Typed search attributes

Previously, search attributes were untyped maps with string keys and interface values. This causes ambiguity on what types a search attribute key represents and leads to errors. Also, the way search attributes were created or upserted allowed mistakes to occur and was not clear to the server exactly what was expected.

• Added TypedSearchAttributes to client.ScheduleOptions and deprecated SearchAttributes
• Added GetTypedSearchAttributes to workflow and deprecated WorkflowInfo.SearchAttributes
• Added UpsertTypedSearchAttributes to workflow and deprecated UpsertSearchAttributes
• Added TypedSearchAttributes to client.StartWorkflowOptions and deprecated SearchAttributes
• Added several new things to temporal package including:
  • SearchAttributes collection with methods and constructor
  • SearchAttributeKey and SearchAttributeUpdate interfaces
  • SearchAttributeKeyX types and constructors for typed keys

💥 BREAKING CHANGES

gogo/protobuf

gogo/protobuf has been replaced with Google's official proto compiler.

Users may notice:

• time.Time in proto structs will now be timestamppb.Timestamp
• time.Duration will now be durationpb.Duration
• V2-generated structs embed locks, so you cannot dereference them.
• Proto enums will, when formatted to JSON, now be in SCREAMING_SNAKE_CASE rather than PascalCase.
  • If trying to deserialize old JSON with PascalCase to proto use go.temporal.io/api/temporalproto
    

Note on invalid UTF-8 data stored as proto strings

Prior to SDK version v1.26.0 our protobuf code generator allowed invalid UTF-8 data to be stored as proto strings. This isn't actually allowed by the proto3 spec, so if you're using our SDK and think you may store arbitrary binary data in our strings you should set -tags protolegacy when building against our SDK.
Example:

$ go build -tags protolegacy myworker/main.go

If you see an error like grpc: error unmarshalling request: string field contains invalid UTF-8 then you will need to enable this when building your code.
If you're unsure then you should specify it anyways as there's no harm in doing so unless you relied on the protobuf compiler to ensure all strings were valid UTF-8.

HTTP/2 Keep Alive

HTTP/2 Keep alive is now enabled by default. This should help avoid request timeouts on previously idle connections. If users want to revert to the old behavior they can set ConnectionOptions.DisableKeepAliveCheck to false.

See also: #1299

Typed search attributes

As part of typed search attributes most old untyped search attributes API were deprecated, but will continue to function as they always have been going forward some breaking changes were required.

See also: #1368

Breaking changes include:

• Added TypedSearchAttributes to client.ScheduleWorkflowAction and 💥removed SearchAttributes and added UntypedSearchAttributes (needed until temporalio/temporal#4787 is fixed)

Workflow Update (Experimental)

Workflow update handlers are now processed eagerly before the main workflow function instead of after. When calling workflow.SetUpdateHandler and an update was received during that workflow task, and no other handlers have been set before, workflow.SetUpdateHandler will trigger the queued update handlers to run.

Activity and Workflow mock name collision in Test Suite

Fixed a bug in the workflow test suite that would cause workflow and activity mocks that shared the same name to override each other. If your test was doing this and asserting on the number of times a mock was called you may notice a change in behavior as activity and workflow mocks are now stored in separate maps.

see also: #1371

💥 Rollback Note

Due to this change in update processing , rolling back the SDK to a pre v1.26.0 version may cause workflow using workflow update (receiving update requests or registering an update handler) to get stuck with non determinism errors until they roll forward again.

Other changes

• Tag workflow_task_execution_failed metric with error type to help differentiate workflow task failures caused by non determinism from other task failures

• Dump coroutine stack on deadlock timeout. When the SDK detects a deadlock it will now try to dump the stack trace of the coroutine it detected as deadlocked.

• Add deterministic range over map helper. Iterating over Go's standard maps is not deterministic and therefore cannot be done in a workflow context. The SDK now includes helpers DeterministicKeys and DeterministicKeysFunc to get the keys of a map in a deterministic order.

Specific Changes

2023-10-13 - 06c90fb - Propagate Baggage in OTEL tracing interceptor (#1260)
2023-10-26 - 3cccbdd - Fix error documentation typos and enum values (#1276)
2023-10-31 - 0352634 - Add EmitDefault option for ProtoJson converter (#1286)
2023-11-08 - 0e432a9 - Add context propagators to local activity executions through test environments (#1291)
2023-11-08 - 4663bab - Fix typo in documentation (#1288)
2023-11-17 - 8068455 - Delete .github/workflows/semgrep.yml (#1294)
2023-11-21 - f9d73bf - Replace gogo protobuf (#1256)
2023-11-22 - 7db0d87 - Use the official features repo (#1298)
2023-11-27 - 745e948 - Add NotBefore function to testsuite.MockCallWrapper (#1301)
2023-11-27 - f5a0127 - Edit docstrings (#1302)
2023-11-28 - 33e8360 - Multi-platform CI and Makefile removal (#1293)
2023-11-28 - 70c8400 - Fix doc typo (#1305)
2023-11-28 - 8f2a3c8 - Use our new JSON coding stack (#1307)
2023-11-29 - 288a04f - Bump api-go version to fix Payload marshaling (#1308)
2023-11-29 - 89c8dba - Enabled keep alive by default (#1299)
2023-11-30 - 266e049 - Fix race in WaitSignalReturnParam (#1309)
2023-11-30 - 802d32e - Run cloud tests in series to avoid wfID conflict (#1311)
2023-11-30 - a309e59 - Tag workflow_task_execution_failed with error type (#1295)
2023-12-04 - 5fdbecc - Handle updates immediately when registered (#1306)
2023-12-04 - 838121a - Don't run workflowCancelHandler in test harness (#1296)
2023-12-04 - 987379d - Make remoteDataConverter implement PayloadCodec (#1303)
2023-12-04 - eb05747 - Fix flaky test (#1314)
2023-12-07 - 5d5b9c4 - Fix typo in docstring (#1317)
2023-12-14 - 7a9640d - Fix typo in update docstring (#1321)
2023-12-15 - f823b64 - Cleanup dead code and incorrect use of go routine in context pkg (#1320)
2023-12-27 - 95fe6ab - Fix bad Update mock in NamespaceClient (#1328)
2023-12-30 - 5a64898 - Failed Read-Only check causes a WFT failure in validator (#1329)
2024-01-04 - cb1d35e - Update dd-trace-go.v1 (#1332)
2024-01-05 - 2f61d2f - Add last BuildID to workflow info (#1335)
2024-01-07 - 7fc12d3 - Add otel metrics support (#1336)
2024-01-08 - 6244097 - Include update state machine fields in panic (#1327)
2024-01-08 - c1744ee - Bump go-api version to fix protojson vuln (#1333)
2024-01-09 - 1fe10d5 - Fix flaky build id issue (#1338)
2024-01-09 - 5ca9a4d - Add deterministic range over map helper (#1340)
2024-01-13 - fac7f7f - Update WorkflowRun.Get Doc String (#1346)
2024-01-16 - 0f12265 - Replace go.uber.org/atomic with sync/atomic (#1344)
2024-01-16 - 41d2288 - Evict workflow from cache on RespondTaskCompleted failure (#1358)
2024-01-16 - 54e131e - Make dataConverterWithoutDeadlock context aware (#1348)
2024-01-17 - 14103e0 - regenerate mocks with latest mockery (#1361)
2024-01-17 - 50ab40d - regenerate mocks under client to allow dynamic returns based on arguments (#1353)
2024-01-17 - 55c39b5 - Disable eager activities if tq rate limits is set (#1350)
2024-01-17 - b50cce9 - Replace some Sprintfs with string concatenation (#1345)
2024-01-17 - e3a3d95 - Always yield when registering update handles (#1325)
2024-01-19 - 14ddd7b - Dump coroutine stack on deadlock timeout (#1356)
2024-01-22 - 171504d - Fail task on unknown event when HistoryEvent.worker_may_ignore is false (#1363)
2024-01-22 - 30b2681 - Exit coroutine in order (#1362)
2024-01-22 - 94a5f5f - Allow client to suggest delay until next retry (#1319)
2024-01-26 - 536b875 - Exclude codes.DeadlineExceeded from the list of retryable gRPC codes (#1366)
2024-02-01 - 57b6679 - Typed Search Attributes (#1368)
2024-02-01 - 86764f8 - Handle nil valuePtr case in update handler Get (#1373)
2024-02-01 - a7c9528 - Prefix some errors with rule identifiers (#1281)
2024-02-01 - e2bec16 - Fix testing suite name conflict for workflow and activity (#887) (#1371)
2024-02-02 - 5c8c9a3 - Release Go SDK version 1.26.0-RC.1 (#1374)
2024-02-05 - 262766c - Fix data race on desiredWorkflowCacheSize (#1377)
2024-02-08 - 246a7d2 - Rectify the default values for keep-alive timeout (#1381)
2024-02-08 - 72a5b6f - workflowcheck: bump golang.org/x/tools from 0.13.0 to 0.17.0 (#1379)
2024-02-13 - d39fa9d - Add support for typed search attributes to the test suite (#1378)
2024-02-14 - 30da688 - Introduce a new constructor to override retry policy in ContinueAsNewError (#1383)
2024-02-20 - 5621b7f - Clarify OnUpsertTypedSearchAttributes (#1391)
2024-02-20 - 65aae9b - Document GetSearchAttributes is not supported on cloud (#1388)
2024-02-21 - 6d4ec2d - Make it possible to cancel workflows by ID when testing (#1392)
2024-02-22 - a71e4c4 - Update CI to Go lang 1.22 (#1389)
2024-02-27 - 34ef0a7 - Only set SDKPriorityUpdateHandling if workflow update is being used (#1398)
2024-02-27 - 54b2336 - Add note NextRetryDelay is not supported on the server (#1400)
2024-02-29 - d9a574d - Update workflow check with new...

Note: This is a release candidate, we encourage users to test out this release to be prepared for upcoming changes and to report any bugs.

Typed search attributes

Previously, search attributes were untyped maps with string keys and interface values. This causes ambiguity on what types a search attribute key represents and leads to errors. Also, the way search attributes were created or upserted allowed mistakes to occur and was not clear to the server exactly what was expected.

• Added TypedSearchAttributes to client.ScheduleOptions and deprecated SearchAttributes
• Added GetTypedSearchAttributes to workflow and deprecated WorkflowInfo.SearchAttributes
• Added UpsertTypedSearchAttributes to workflow and deprecated UpsertSearchAttributes
• Added TypedSearchAttributes to client.StartWorkflowOptions and deprecated SearchAttributes
• Added several new things to temporal package including:
  • SearchAttributes collection with methods and constructor
  • SearchAttributeKey and SearchAttributeUpdate interfaces
  • SearchAttributeKeyX types and constructors for typed keys

💥 BREAKING CHANGES

gogo/protobuf

gogo/protobuf has been replaced with Google's official proto compiler.

Users may notice:

• time.Time in proto structs will now be timestamppb.Timestamp
• time.Duration will now be durationpb.Duration
• V2-generated structs embed locks, so you cannot dereference them.
• Proto enums will, when formatted to JSON, now be in SCREAMING_SNAKE_CASE rather than PascalCase.

Note on invalid UTF-8 data stored as proto strings

Prior to SDK version v1.26.0 our protobuf code generator allowed invalid UTF-8 data to be stored as proto strings. This isn't actually allowed by the proto3 spec, so if you're using our SDK and think you may store arbitrary binary data in our strings you should set -tags protolegacy when building against our SDK.
Example:

$ go build -tags protolegacy myworker/main.go

If you see an error like grpc: error unmarshalling request: string field contains invalid UTF-8 then you will need to enable this when building your code.
If you're unsure then you should specify it anyways as there's no harm in doing so unless you relied on the protobuf compiler to ensure all strings were valid UTF-8.

HTTP/2 Keep Alive

HTTP/2 Keep alive is now enabled by default. This should help avoid request timeouts on previously idle connections. If users want to revert to the old behavior they can set ConnectionOptions.DisableKeepAliveCheck to false.

See also: #1299

Typed search attributes

As part of typed search attributes most old untyped search attributes API were deprecated, but will continue to function as they always have been going forward some breaking changes were required.

See also: #1368

Breaking changes include:

• Added TypedSearchAttributes to client.ScheduleWorkflowAction and 💥removed SearchAttributes and added UntypedSearchAttributes (needed until temporalio/temporal#4787 is fixed)

Workflow Update (Experimental)

Workflow update handlers are now processed eagerly before the main workflow function instead of after. When calling workflow.SetUpdateHandler and an update was received during that workflow task, and no other handlers have been set before, workflow.SetUpdateHandler will trigger the queued update handlers to run.

Activity and Workflow mock name collision in Test Suite

Fixed a bug in the workflow test suite that would cause workflow and activity mocks that shared the same name to override each other. If your test was doing this and asserting on the number of times a mock was called you may notice a change in behavior as activity and workflow mocks are now stored in separate maps.

see also: #1371

💥 Rollback Note

Due to this change in update processing , rolling back the SDK to a pre v1.26.0 version may cause workflow using workflow update (receiving update requests or registering an update handler) to get stuck with non determinism errors until they roll forward again.

Other changes

• Tag workflow_task_execution_failed metric with error type to help differentiate workflow task failures caused by non determinism from other task failures

• Dump coroutine stack on deadlock timeout. When the SDK detects a deadlock it will now try to dump the stack trace of the coroutine it detected as deadlocked.

• Add deterministic range over map helper. Iterating over Go's standard maps is not deterministic and therefore cannot be done in a workflow context. The SDK now includes helpers DeterministicKeys and DeterministicKeysFunc to get the keys of a map in a deterministic order.

Specific Changes

2023-10-13 - 06c90fb - Propagate Baggage in OTEL tracing interceptor (#1260)
2023-10-26 - 3cccbdd - Fix error documentation typos and enum values (#1276)
2023-10-31 - 0352634 - Add EmitDefault option for ProtoJson converter (#1286)
2023-11-08 - 0e432a9 - Add context propagators to local activity executions through test environments (#1291)
2023-11-08 - 4663bab - Fix typo in documentation (#1288)
2023-11-17 - 8068455 - Delete .github/workflows/semgrep.yml (#1294)
2023-11-21 - f9d73bf - Replace gogo protobuf (#1256)
2023-11-22 - 7db0d87 - Use the official features repo (#1298)
2023-11-27 - 745e948 - Add NotBefore function to testsuite.MockCallWrapper (#1301)
2023-11-27 - f5a0127 - Edit docstrings (#1302)
2023-11-28 - 33e8360 - Multi-platform CI and Makefile removal (#1293)
2023-11-28 - 70c8400 - Fix doc typo (#1305)
2023-11-28 - 8f2a3c8 - Use our new JSON coding stack (#1307)
2023-11-29 - 288a04f - Bump api-go version to fix Payload marshaling (#1308)
2023-11-29 - 89c8dba - Enabled keep alive by default (#1299)
2023-11-30 - 266e049 - Fix race in WaitSignalReturnParam (#1309)
2023-11-30 - 802d32e - Run cloud tests in series to avoid wfID conflict (#1311)
2023-11-30 - a309e59 - Tag workflow_task_execution_failed with error type (#1295)
2023-12-04 - 5fdbecc - Handle updates immediately when registered (#1306)
2023-12-04 - 838121a - Don't run workflowCancelHandler in test harness (#1296)
2023-12-04 - 987379d - Make remoteDataConverter implement PayloadCodec (#1303)
2023-12-04 - eb05747 - Fix flaky test (#1314)
2023-12-07 - 5d5b9c4 - Fix typo in docstring (#1317)
2023-12-14 - 7a9640d - Fix typo in update docstring (#1321)
2023-12-15 - f823b64 - Cleanup dead code and incorrect use of go routine in context pkg (#1320)
2023-12-27 - 95fe6ab - Fix bad Update mock in NamespaceClient (#1328)
2023-12-30 - 5a64898 - Failed Read-Only check causes a WFT failure in validator (#1329)
2024-01-04 - cb1d35e - Update dd-trace-go.v1 (#1332)
2024-01-05 - 2f61d2f - Add last BuildID to workflow info (#1335)
2024-01-07 - 7fc12d3 - Add otel metrics support (#1336)
2024-01-08 - 6244097 - Include update state machine fields in panic (#1327)
2024-01-08 - c1744ee - Bump go-api version to fix protojson vuln (#1333)
2024-01-09 - 1fe10d5 - Fix flaky build id issue (#1338)
2024-01-09 - 5ca9a4d - Add deterministic range over map helper (#1340)
2024-01-13 - fac7f7f - Update WorkflowRun.Get Doc String (#1346)
2024-01-16 - 0f12265 - Replace go.uber.org/atomic with sync/atomic (#1344)
2024-01-16 - 41d2288 - Evict workflow from cache on RespondTaskCompleted failure (#1358)
2024-01-16 - 54e131e - Make dataConverterWithoutDeadlock context aware (#1348)
2024-01-17 - 14103e0 - regenerate mocks with latest mockery (#1361)
2024-01-17 - 50ab40d - regenerate mocks under client to allow dynamic returns based on arguments (#1353)
2024-01-17 - 55c39b5 - Disable eager activities if tq rate limits is set (#1350)
2024-01-17 - b50cce9 - Replace some Sprintfs with string concatenation (#1345)
2024-01-17 - e3a3d95 - Always yield when registering update handles (#1325)
2024-01-19 - 14ddd7b - Dump coroutine stack on deadlock timeout (#1356)
2024-01-22 - 171504d - Fail task on unknown event when HistoryEvent.worker_may_ignore is false (#1363)
2024-01-22 - 30b2681 - Exit coroutine in order (#1362)
2024-01-22 - 94a5f5f - Allow client to suggest delay until next retry (#1319)
2024-01-26 - 536b875 - Exclude codes.DeadlineExceeded from the list of retryable gRPC codes (#1366)
2024-02-01 - 57b6679 - Typed Search Attributes (#1368)
2024-02-01 - 86764f8 - Handle nil valuePtr case in update handler Get (#1373)
2024-02-01 - a7c9528 - Prefix some errors with rule identifiers (#1281)
2024-02-01 - e2bec16 - Fix testing suite name conflict for workflow and activity (#887) (#1371)
2024-02-02 - 5c8c9a3 - Release Go SDK version 1.26.0-RC.1 (#1374)
2024-02-05 - 262766c - Fix data race on desiredWorkflowCacheSize (#1377)
2024-02-08 - 246a7d2 - Rectify the default values for keep-alive timeout (#1381)
2024-02-08 - 72a5b6f - workflowcheck: bump golang.org/x/tools from 0.13.0 to 0.17.0 (#1379)
2024-02-13 - d39fa9d - Add support for typed search attributes to the test suite (#1378)
2024-02-14 - 30da688 - Introduce a new constructor to override retry policy in ContinueAsNewError (#1383)
2024-02-20 - 5621b7f - Clarify OnUpsertTypedSearchAttributes (#1391)
2024-02-20 - 65aae9b - Document GetSearchAttributes is not supported on cloud (#1388)
2024-02-21 - 6d4ec2d - Make it possible to cancel workflows by ID when testing (#1392)
2024-02-22 - a71e4c4 - Update CI to Go lang 1.22 (#1389)
2024-02-27 - 34ef0a7 - Only set SDKPriorityUpdateHandling if workflow update is being used (#1398)
2024-02-27 - 54b2336 - Add note NextRetryDelay is not supported on the server (#1400)
2024-02-29 - d9a574d - Update workflow check with new function added ...

Note: This is a release candidate, we encourage users to test out this release to be prepared for upcoming changes and to report any bugs.

Typed search attributes

Previously, search attributes were untyped maps with string keys and interface values. This causes ambiguity on what types a search attribute key represents and leads to errors. Also, the way search attributes were created or upserted allowed mistakes to occur and was not clear to the server exactly what was expected.

• Added TypedSearchAttributes to client.ScheduleOptions and deprecated SearchAttributes
• Added GetTypedSearchAttributes to workflow and deprecated WorkflowInfo.SearchAttributes
• Added UpsertTypedSearchAttributes to workflow and deprecated UpsertSearchAttributes
• Added TypedSearchAttributes to client.StartWorkflowOptions and deprecated SearchAttributes
• Added several new things to temporal package including:
  • SearchAttributes collection with methods and constructor
  • SearchAttributeKey and SearchAttributeUpdate interfaces
  • SearchAttributeKeyX types and constructors for typed keys

💥 BREAKING CHANGES

gogo/protobuf

gogo/protobuf has been replaced with Google's official proto compiler.

Users may notice:

• time.Time in proto structs will now be timestamppb.Timestamp
• time.Duration will now be durationpb.Duration
• V2-generated structs embed locks, so you cannot dereference them.
• Proto enums will, when formatted to JSON, now be in SCREAMING_SNAKE_CASE rather than PascalCase.

HTTP/2 Keep Alive

HTTP/2 Keep alive is not enabled by default. This should help avoid request timeouts on previously idle connections. If users want to revert to the old behaviour they can set ConnectionOptions.DisableKeepAliveCheck to false.

See also: #1299

Typed search attributes

As part of typed search attributes most old untyped search attributes API were deprecated, but will continue to function as they always have been going forward some breaking changes were required.

Breaking changes include:

• Added TypedSearchAttributes to client.ScheduleWorkflowAction and 💥removed SearchAttributes and added UntypedSearchAttributes (needed until temporalio/temporal#4787 is fixed)

Workflow Update (Experimental)

Workflow update handlers are now processed eagerly before the main workflow function instead of after. When calling workflow.SetUpdateHandler and an update was received during that workflow task, and no other handlers have been set before, workflow.SetUpdateHandler will trigger the queued update handlers to run.

Activity and Workflow mock name collision in Test Suite

Fixed a bug in the workflow test suite that would cause workflow and activity mocks that shared the same name to override each other. If your test was doing this and asserting on the number of times a mock was called you may notice a change in behavior as activity and workflow mocks are now stored in separate maps.

see also: #1371

💥 Rollback Note

Due to this change in update processing , rolling back the SDK to a pre v1.26.0 version may cause workflow using workflow update (receiving update requests or registering an update handler) to get stuck with non determinism errors until they roll forward again.

Other changes

• Tag workflow_task_execution_failed metric with error type to help differentiate workflow task failures caused by non determinism from other task failures

• Dump coroutine stack on deadlock timeout. When the SDK detects a deadlock it will now try to dump the stack trace of the coroutine it detected as deadlocked.

• Add deterministic range over map helper. Iterating over Go's standard maps is not deterministic and therefore cannot be done in a workflow context. The SDK now includes helpers DeterministicKeys and DeterministicKeysFunc to get the keys of a map in a deterministic order.

Specific Changes

2023-10-13 - 06c90fb - Propagate Baggage in OTEL tracing interceptor (#1260)
2023-10-26 - 3cccbdd - Fix error documentation typos and enum values (#1276)
2023-10-31 - 0352634 - Add EmitDefault option for ProtoJson converter (#1286)
2023-11-08 - 0e432a9 - Add context propagators to local activity executions through test environments (#1291)
2023-11-08 - 4663bab - Fix typo in documentation (#1288)
2023-11-17 - 8068455 - Delete .github/workflows/semgrep.yml (#1294)
2023-11-21 - f9d73bf - Replace gogo protobuf (#1256)
2023-11-22 - 7db0d87 - Use the official features repo (#1298)
2023-11-27 - 745e948 - Add NotBefore function to testsuite.MockCallWrapper (#1301)
2023-11-27 - f5a0127 - Edit docstrings (#1302)
2023-11-28 - 33e8360 - Multi-platform CI and Makefile removal (#1293)
2023-11-28 - 70c8400 - Fix doc typo (#1305)
2023-11-28 - 8f2a3c8 - Use our new JSON coding stack (#1307)
2023-11-29 - 288a04f - Bump api-go version to fix Payload marshaling (#1308)
2023-11-29 - 89c8dba - Enabled keep alive by default (#1299)
2023-11-30 - 266e049 - Fix race in WaitSignalReturnParam (#1309)
2023-11-30 - 802d32e - Run cloud tests in series to avoid wfID conflict (#1311)
2023-11-30 - a309e59 - Tag workflow_task_execution_failed with error type (#1295)
2023-12-04 - 5fdbecc - Handle updates immediately when registered (#1306)
2023-12-04 - 838121a - Don't run workflowCancelHandler in test harness (#1296)
2023-12-04 - 987379d - Make remoteDataConverter implement PayloadCodec (#1303)
2023-12-04 - eb05747 - Fix flaky test (#1314)
2023-12-07 - 5d5b9c4 - Fix typo in docstring (#1317)
2023-12-14 - 7a9640d - Fix typo in update docstring (#1321)
2023-12-15 - f823b64 - Cleanup dead code and incorrect use of go routine in context pkg (#1320)
2023-12-27 - 95fe6ab - Fix bad Update mock in NamespaceClient (#1328)
2023-12-30 - 5a64898 - Failed Read-Only check causes a WFT failure in validator (#1329)
2024-01-04 - cb1d35e - Update dd-trace-go.v1 (#1332)
2024-01-05 - 2f61d2f - Add last BuildID to workflow info (#1335)
2024-01-07 - 7fc12d3 - Add otel metrics support (#1336)
2024-01-08 - 6244097 - Include update state machine fields in panic (#1327)
2024-01-08 - c1744ee - Bump go-api version to fix protojson vuln (#1333)
2024-01-09 - 1fe10d5 - Fix flaky build id issue (#1338)
2024-01-09 - 5ca9a4d - Add deterministic range over map helper (#1340)
2024-01-13 - fac7f7f - Update WorkflowRun.Get Doc String (#1346)
2024-01-16 - 0f12265 - Replace go.uber.org/atomic with sync/atomic (#1344)
2024-01-16 - 41d2288 - Evict workflow from cache on RespondTaskCompleted failure (#1358)
2024-01-16 - 54e131e - Make dataConverterWithoutDeadlock context aware (#1348)
2024-01-17 - 14103e0 - regenerate mocks with latest mockery (#1361)
2024-01-17 - 50ab40d - regenerate mocks under client to allow dynamic returns based on arguments (#1353)
2024-01-17 - 55c39b5 - Disable eager activities if tq rate limits is set (#1350)
2024-01-17 - b50cce9 - Replace some Sprintfs with string concatenation (#1345)
2024-01-17 - e3a3d95 - Always yield when registering update handles (#1325)
2024-01-19 - 14ddd7b - Dump coroutine stack on deadlock timeout (#1356)
2024-01-22 - 171504d - Fail task on unknown event when HistoryEvent.worker_may_ignore is false (#1363)
2024-01-22 - 30b2681 - Exit coroutine in order (#1362)
2024-01-22 - 94a5f5f - Allow client to suggest delay until next retry (#1319)
2024-01-26 - 536b875 - Exclude codes.DeadlineExceeded from the list of retryable gRPC codes (#1366)
2024-02-01 - 57b6679 - Typed Search Attributes (#1368)
2024-02-01 - 86764f8 - Handle nil valuePtr case in update handler Get (#1373)
2024-02-01 - a7c9528 - Prefix some errors with rule identifiers (#1281)
2024-02-01 - e2bec16 - Fix testing suite name conflict for workflow and activity (#887) (#1371)
2024-02-02 - 5c8c9a3 - Release Go SDK version 1.26.0-RC.1 (#1374)
2024-02-05 - 262766c - Fix data race on desiredWorkflowCacheSize (#1377)
2024-02-08 - 246a7d2 - Rectify the default values for keep-alive timeout (#1381)
2024-02-08 - 72a5b6f - workflowcheck: bump golang.org/x/tools from 0.13.0 to 0.17.0 (#1379)
2024-02-13 - d39fa9d - Add support for typed search attributes to the test suite (#1378)
2024-02-14 - 30da688 - Introduce a new constructor to override retry policy in ContinueAsNewError (#1383)
2024-02-20 - 5621b7f - Clarify OnUpsertTypedSearchAttributes (#1391)
2024-02-20 - 65aae9b - Document GetSearchAttributes is not supported on cloud (#1388)
2024-02-21 - 6d4ec2d - Make it possible to cancel workflows by ID when testing (#1392)
2024-02-22 - a71e4c4 - Update CI to Go lang 1.22 (#1389)
2024-02-27 - 34ef0a7 - Only set SDKPriorityUpdateHandling if workflow update is being used (#1398)
2024-02-27 - 54b2336 - Add note NextRetryDelay is not supported on the server (#1400)

For release notes see:

https://github.com/temporalio/sdk-go/releases/tag/v1.26.0-rc.1

Publishing a new tag to fix a mismatch in the sum.db checksum

Note: This is a release candidate, we encourage users to test out this release to be prepared for upcoming changes and to report any bugs.

Typed search attributes

Previously, search attributes were untyped maps with string keys and interface values. This causes ambiguity on what types a search attribute key represents and leads to errors. Also, the way search attributes were created or upserted allowed mistakes to occur and was not clear to the server exactly what was expected.

• Added TypedSearchAttributes to client.ScheduleOptions and deprecated SearchAttributes
• Added GetTypedSearchAttributes to workflow and deprecated WorkflowInfo.SearchAttributes
• Added UpsertTypedSearchAttributes to workflow and deprecated UpsertSearchAttributes
• Added TypedSearchAttributes to client.StartWorkflowOptions and deprecated SearchAttributes
• Added several new things to temporal package including:
  • SearchAttributes collection with methods and constructor
  • SearchAttributeKey and SearchAttributeUpdate interfaces
  • SearchAttributeKeyX types and constructors for typed keys

💥 BREAKING CHANGES

gogo/protobuf

gogo/protobuf has been replaced with Google's official proto compiler.

Users may notice:

• time.Time in proto structs will now be timestamppb.Timestamp
• time.Duration will now be durationpb.Duration
• V2-generated structs embed locks, so you cannot dereference them.
• Proto enums will, when formatted to JSON, now be in SCREAMING_SNAKE_CASE rather than PascalCase.

Typed search attributes

As part of typed search attributes most old untyped search attributes API were deprecated, but will continue to function as they always have been going forward some breaking changes were required.

Breaking changes include:

• Added TypedSearchAttributes to client.ScheduleWorkflowAction and 💥removed SearchAttributes and added UntypedSearchAttributes (needed until temporalio/temporal#4787 is fixed)

Workflow Update (Experimental)

Workflow update handlers are now processed eagerly before the main workflow function instead of after. When calling workflow.SetUpdateHandler and an update was received during that workflow task, and no other handlers have been set before, workflow.SetUpdateHandler will trigger the queued update handlers to run.

Activity and Workflow mock name collision in Test Suite

Fixed a bug in the workflow test suite that would cause workflow and activity mocks that shared the same name to override each other. If your test was doing this and asserting on the number of times a mock was called you may notice a change in behavior as activity and workflow mocks are now stored in separate maps.

see also: #1371

Other changes

• Tag workflow_task_execution_failed metric with error type to help differentiate workflow task failures caused by non determinism from other task failures

• Dump coroutine stack on deadlock timeout. When the SDK detects a deadlock it will now try to dump the stack trace of the coroutine it detected as deadlocked.

• Add deterministic range over map helper. Iterating over Go's standard maps is not deterministic and therefore cannot be done in a workflow context. The SDK now includes helpers DeterministicKeys and DeterministicKeysFunc to get the keys of a map in a deterministic order.

Specific Changes

2023-10-13 - 06c90fb - Propagate Baggage in OTEL tracing interceptor (#1260)
2023-10-26 - 3cccbdd - Fix error documentation typos and enum values (#1276)
2023-10-31 - 0352634 - Add EmitDefault option for ProtoJson converter (#1286)
2023-11-08 - 0e432a9 - Add context propagators to local activity executions through test environments (#1291)
2023-11-08 - 4663bab - Fix typo in documentation (#1288)
2023-11-17 - 8068455 - Delete .github/workflows/semgrep.yml (#1294)
2023-11-21 - f9d73bf - Replace gogo protobuf (#1256)
2023-11-22 - 7db0d87 - Use the official features repo (#1298)
2023-11-27 - 745e948 - Add NotBefore function to testsuite.MockCallWrapper (#1301)
2023-11-27 - f5a0127 - Edit docstrings (#1302)
2023-11-28 - 33e8360 - Multi-platform CI and Makefile removal (#1293)
2023-11-28 - 70c8400 - Fix doc typo (#1305)
2023-11-28 - 8f2a3c8 - Use our new JSON coding stack (#1307)
2023-11-29 - 288a04f - Bump api-go version to fix Payload marshaling (#1308)
2023-11-29 - 89c8dba - Enabled keep alive by default (#1299)
2023-11-30 - 266e049 - Fix race in WaitSignalReturnParam (#1309)
2023-11-30 - 802d32e - Run cloud tests in series to avoid wfID conflict (#1311)
2023-11-30 - a309e59 - Tag workflow_task_execution_failed with error type (#1295)
2023-12-04 - 5fdbecc - Handle updates immediately when registered (#1306)
2023-12-04 - 838121a - Don't run workflowCancelHandler in test harness (#1296)
2023-12-04 - 987379d - Make remoteDataConverter implement PayloadCodec (#1303)
2023-12-04 - eb05747 - Fix flaky test (#1314)
2023-12-07 - 5d5b9c4 - Fix typo in docstring (#1317)
2023-12-14 - 7a9640d - Fix typo in update docstring (#1321)
2023-12-15 - f823b64 - Cleanup dead code and incorrect use of go routine in context pkg (#1320)
2023-12-27 - 95fe6ab - Fix bad Update mock in NamespaceClient (#1328)
2023-12-30 - 5a64898 - Failed Read-Only check causes a WFT failure in validator (#1329)
2024-01-04 - cb1d35e - Update dd-trace-go.v1 (#1332)
2024-01-05 - 2f61d2f - Add last BuildID to workflow info (#1335)
2024-01-07 - 7fc12d3 - Add otel metrics support (#1336)
2024-01-08 - 6244097 - Include update state machine fields in panic (#1327)
2024-01-08 - c1744ee - Bump go-api version to fix protojson vuln (#1333)
2024-01-09 - 1fe10d5 - Fix flaky build id issue (#1338)
2024-01-09 - 5ca9a4d - Add deterministic range over map helper (#1340)
2024-01-13 - fac7f7f - Update WorkflowRun.Get Doc String (#1346)
2024-01-16 - 0f12265 - Replace go.uber.org/atomic with sync/atomic (#1344)
2024-01-16 - 41d2288 - Evict workflow from cache on RespondTaskCompleted failure (#1358)
2024-01-16 - 54e131e - Make dataConverterWithoutDeadlock context aware (#1348)
2024-01-17 - 14103e0 - regenerate mocks with latest mockery (#1361)
2024-01-17 - 50ab40d - regenerate mocks under client to allow dynamic returns based on arguments (#1353)
2024-01-17 - 55c39b5 - Disable eager activities if tq rate limits is set (#1350)
2024-01-17 - b50cce9 - Replace some Sprintfs with string concatenation (#1345)
2024-01-17 - e3a3d95 - Always yield when registering update handles (#1325)
2024-01-19 - 14ddd7b - Dump coroutine stack on deadlock timeout (#1356)
2024-01-22 - 171504d - Fail task on unknown event when HistoryEvent.worker_may_ignore is false (#1363)
2024-01-22 - 30b2681 - Exit coroutine in order (#1362)
2024-01-22 - 94a5f5f - Allow client to suggest delay until next retry (#1319)
2024-01-26 - 536b875 - Exclude codes.DeadlineExceeded from the list of retryable gRPC codes (#1366)
2024-02-01 - 57b6679 - Typed Search Attributes (#1368)
2024-02-01 - 86764f8 - Handle nil valuePtr case in update handler Get (#1373)
2024-02-01 - a7c9528 - Prefix some errors with rule identifiers (#1281)
2024-02-01 - e2bec16 - Fix testing suite name conflict for workflow and activity (#887) (#1371)
2024-02-01 - f144428 - Release Go SDK version 1.26.0-RC.1

Highlights

Bugfixes

Fix a regression causing some custom logger implementations to log key-values as a list.

Specific Changes

2023-10-11 - 83199af - Small docs tweaks. (#1262)
2023-10-12 - a6cdcd7 - Add UpdateWorkflowByID to TestWorkflowEnvironment (#1264)
2023-10-13 - b484666 - loggerWith.WithCallerSkip expand keyvals (#1267)