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feat: Infinite Sessions#76

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jmoseley merged 30 commits intomainfrom
jm/infinite
Jan 24, 2026
Merged

feat: Infinite Sessions#76
jmoseley merged 30 commits intomainfrom
jm/infinite

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Allow configuration of infinite sessions and compaction thresholds.

- Add InfiniteSessionConfig type with thresholds
- Add infiniteSessions option to SessionConfig
- Expose workspacePath on CopilotSession
- Pass config to server and capture workspace path in create/resume
- Add InfiniteSessionConfig TypedDict with thresholds
- Add infinite_sessions option to SessionConfig
- Expose workspace_path property on CopilotSession
- Convert snake_case to camelCase for wire format
- Add InfiniteSessionConfig struct with pointer fields for optional values
- Add InfiniteSessions field to SessionConfig
- Add WorkspacePath() method to Session
- Pass config in CreateSession and capture path in create/resume
- Add InfiniteSessionConfig class with threshold properties
- Add InfiniteSessions property to SessionConfig
- Add WorkspacePath property to CopilotSession
- Pass config in CreateSessionAsync and capture path in create/resume
- Add InfiniteSessionConfig documentation to SessionConfig options
- Document workspacePath property on CopilotSession
- Add Infinite Sessions section with examples for each SDK
- Document compaction events
@jmoseley jmoseley requested a review from a team as a code owner January 21, 2026 22:26
Copilot AI review requested due to automatic review settings January 21, 2026 22:26
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Pull request overview

This PR adds support for infinite sessions with automatic context compaction and workspace persistence across all language SDKs (Python, Node.js, Go, and .NET). Sessions can now automatically manage context window limits through background compaction and persist state to workspace directories.

Changes:

  • Added InfiniteSessionConfig type across all SDKs with configurable thresholds for background compaction and buffer exhaustion
  • Updated session objects to include workspace_path property that points to the session's persistent workspace directory
  • Modified create and resume session methods to accept infinite session configuration and return workspace paths
  • Added comprehensive documentation with usage examples for all supported languages

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 6 comments.

Show a summary per file
File Description
python/copilot/types.py Added InfiniteSessionConfig TypedDict and infinite_sessions field to SessionConfig
python/copilot/session.py Added workspace_path parameter and property to CopilotSession
python/copilot/client.py Updated create_session and resume_session to handle infinite sessions config and workspace path
python/README.md Added Infinite Sessions documentation section with Python examples
nodejs/src/types.ts Added InfiniteSessionConfig interface and infiniteSessions field to SessionConfig
nodejs/src/session.ts Added workspacePath parameter and getter to CopilotSession
nodejs/src/index.ts Exported InfiniteSessionConfig type
nodejs/src/client.ts Updated createSession and resumeSession to handle infinite sessions config and workspace path
nodejs/README.md Added Infinite Sessions documentation section with TypeScript examples
go/types.go Added InfiniteSessionConfig struct and InfiniteSessions field to SessionConfig
go/session.go Added workspacePath field and WorkspacePath() method to Session
go/client.go Updated CreateSession and ResumeSessionWithOptions to handle infinite sessions config and workspace path
go/README.md Added Infinite Sessions documentation section with Go examples
dotnet/src/Types.cs Added InfiniteSessionConfig class and InfiniteSessions property to SessionConfig
dotnet/src/Session.cs Added WorkspacePath parameter and property to CopilotSession
dotnet/src/Client.cs Updated CreateSessionAsync and ResumeSessionAsync to handle infinite sessions config and workspace path
dotnet/README.md Added Infinite Sessions documentation section with C# examples
Comments suppressed due to low confidence (1)

go/README.md:286

  • The function call references Float64(0.95) but should be copilot.Float64(0.95) to be consistent with the copilot.Bool(true) on line 284. This appears to be a missing package prefix.
        BufferExhaustionThreshold:     Float64(0.95), // Block at 95% until compaction completes

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Comment thread nodejs/README.md
Comment thread python/copilot/client.py
Comment thread go/client.go
Comment thread nodejs/src/client.ts
Comment thread go/README.md Outdated
patniko
patniko previously approved these changes Jan 22, 2026
friggeri
friggeri previously approved these changes Jan 22, 2026
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@jmoseley not going to block based on this, but please add e2e tests if you feel like that would be warranted for this feature

@jmoseley jmoseley dismissed stale reviews from friggeri and patniko via 40ffae5 January 23, 2026 00:54
Comment thread cookbook/dotnet/recipe/error-handling.cs Fixed
Comment thread cookbook/python/recipe/error_handling.py Fixed
Comment thread cookbook/python/recipe/managing_local_files.py Fixed
Comment thread cookbook/python/recipe/multiple_sessions.py Fixed
Comment thread cookbook/python/recipe/multiple_sessions.py Fixed
Comment thread cookbook/python/recipe/multiple_sessions.py Fixed
Comment thread cookbook/python/recipe/persisting_sessions.py Fixed
Comment thread cookbook/python/recipe/pr_visualization.py Fixed
Comment thread cookbook/python/recipe/pr_visualization.py Fixed
- Test compaction triggers with low thresholds (0.5%/1%)
- Test session.usage_info events show token limits
- Test assistant.usage events
- Test no compaction events when infinite sessions disabled
The compaction trigger test requires real API calls to get realistic
token counts. The replay proxy doesn't provide the token usage data
needed for the CLI to trigger compaction.
The test requires a CLI build with infinite sessions support.
Run locally with COPILOT_CLI_PATH pointing to a local CLI build.
Add e2e tests for context compaction to Go, Python, and .NET SDKs:
- Test that compaction triggers with low thresholds and emits events
- Test that no compaction events occur when infinite sessions disabled
- Verify session still works after compaction (context preserved via summary)

These tests mirror the existing Node.js compaction tests.
@jmoseley jmoseley added this pull request to the merge queue Jan 24, 2026
Merged via the queue into main with commit 7a3dcf3 Jan 24, 2026
51 checks passed
@jmoseley jmoseley deleted the jm/infinite branch January 24, 2026 17:50
icode4fuud pushed a commit to icode4fuud/copilot-sdk that referenced this pull request Feb 23, 2026
* feat(nodejs): add infinite sessions configuration

- Add InfiniteSessionConfig type with thresholds
- Add infiniteSessions option to SessionConfig
- Expose workspacePath on CopilotSession
- Pass config to server and capture workspace path in create/resume

* feat(python): add infinite sessions configuration

- Add InfiniteSessionConfig TypedDict with thresholds
- Add infinite_sessions option to SessionConfig
- Expose workspace_path property on CopilotSession
- Convert snake_case to camelCase for wire format

* feat(go): add infinite sessions configuration

- Add InfiniteSessionConfig struct with pointer fields for optional values
- Add InfiniteSessions field to SessionConfig
- Add WorkspacePath() method to Session
- Pass config in CreateSession and capture path in create/resume

* feat(dotnet): add infinite sessions configuration

- Add InfiniteSessionConfig class with threshold properties
- Add InfiniteSessions property to SessionConfig
- Add WorkspacePath property to CopilotSession
- Pass config in CreateSessionAsync and capture path in create/resume

* docs: document infinite sessions feature in all SDKs

- Add InfiniteSessionConfig documentation to SessionConfig options
- Document workspacePath property on CopilotSession
- Add Infinite Sessions section with examples for each SDK
- Document compaction events

* docs: fix missing copilot. prefix in Go README example

* fix: wrap long line in Python docstring

* chore: remove accidentally committed node_modules, add .gitignore

* test(nodejs): add e2e tests for compaction and usage events

- Test compaction triggers with low thresholds (0.5%/1%)
- Test session.usage_info events show token limits
- Test assistant.usage events
- Test no compaction events when infinite sessions disabled

* test: skip compaction trigger test in CI

The compaction trigger test requires real API calls to get realistic
token counts. The replay proxy doesn't provide the token usage data
needed for the CLI to trigger compaction.

* fix(dotnet): fix syntax errors from merge conflict resolution

* test: remove usage event tests (not part of this PR)

* test: enable compaction test in CI

* fix(dotnet): change records to internal for JSON serializer

* test: skip compaction trigger test in CI until CLI is released

The test requires a CLI build with infinite sessions support.
Run locally with COPILOT_CLI_PATH pointing to a local CLI build.

* test: revert skip - will update after CLI release

* test: add compaction e2e tests for all SDK flavors

Add e2e tests for context compaction to Go, Python, and .NET SDKs:
- Test that compaction triggers with low thresholds and emits events
- Test that no compaction events occur when infinite sessions disabled
- Verify session still works after compaction (context preserved via summary)

These tests mirror the existing Node.js compaction tests.

* fix: use %v format for float64 tokensRemoved in Go test

* chore: update @github/copilot CLI to 0.0.394

Updates CLI dependency for Node.js SDK and shared test harness
to support protocol version 2 (infinite sessions).

* style: format compaction tests for all SDKs

* fix: use dict instead of Dict in Python SDK

* fix: correct SessionEventType import in Python compaction test

* feat(go): add Float64 helper function for pointer values

* test: skip .NET compaction tests due to Windows CI proxy timing issues

The compaction tests require the shared test harness proxy, which has
timing issues on Windows CI causing TimeoutException during fixture
initialization. Tests pass on macOS and Ubuntu.

* test: remove .NET compaction tests causing Windows CI fixture issues

The CompactionTests class was causing the E2ETestFixture to fail
initialization on Windows, which cascaded to other test classes.
Removing the tests to unblock CI - the compaction feature is still
tested via Node.js, Go, and Python SDKs.

* Revert "test: remove .NET compaction tests causing Windows CI fixture issues"

This reverts commit bc261a3.

* test: enable .NET compaction tests (remove Skip attributes)

Tests pass locally on macOS and the proxy timeout issue appears to be
unrelated to these specific tests. The ToolsTests fixture timeout
that was seen in CI is a pre-existing flaky issue on Windows.

* fix: increase proxy timeout to 30s on Windows

Windows CI has slower process startup times, especially when multiple
test classes initialize their fixtures in parallel. Increase the proxy
startup timeout from 10s to 30s on Windows to reduce flakiness.
icode4fuud pushed a commit to icode4fuud/copilot-sdk that referenced this pull request Mar 30, 2026
* feat(nodejs): add infinite sessions configuration

- Add InfiniteSessionConfig type with thresholds
- Add infiniteSessions option to SessionConfig
- Expose workspacePath on CopilotSession
- Pass config to server and capture workspace path in create/resume

* feat(python): add infinite sessions configuration

- Add InfiniteSessionConfig TypedDict with thresholds
- Add infinite_sessions option to SessionConfig
- Expose workspace_path property on CopilotSession
- Convert snake_case to camelCase for wire format

* feat(go): add infinite sessions configuration

- Add InfiniteSessionConfig struct with pointer fields for optional values
- Add InfiniteSessions field to SessionConfig
- Add WorkspacePath() method to Session
- Pass config in CreateSession and capture path in create/resume

* feat(dotnet): add infinite sessions configuration

- Add InfiniteSessionConfig class with threshold properties
- Add InfiniteSessions property to SessionConfig
- Add WorkspacePath property to CopilotSession
- Pass config in CreateSessionAsync and capture path in create/resume

* docs: document infinite sessions feature in all SDKs

- Add InfiniteSessionConfig documentation to SessionConfig options
- Document workspacePath property on CopilotSession
- Add Infinite Sessions section with examples for each SDK
- Document compaction events

* docs: fix missing copilot. prefix in Go README example

* fix: wrap long line in Python docstring

* chore: remove accidentally committed node_modules, add .gitignore

* test(nodejs): add e2e tests for compaction and usage events

- Test compaction triggers with low thresholds (0.5%/1%)
- Test session.usage_info events show token limits
- Test assistant.usage events
- Test no compaction events when infinite sessions disabled

* test: skip compaction trigger test in CI

The compaction trigger test requires real API calls to get realistic
token counts. The replay proxy doesn't provide the token usage data
needed for the CLI to trigger compaction.

* fix(dotnet): fix syntax errors from merge conflict resolution

* test: remove usage event tests (not part of this PR)

* test: enable compaction test in CI

* fix(dotnet): change records to internal for JSON serializer

* test: skip compaction trigger test in CI until CLI is released

The test requires a CLI build with infinite sessions support.
Run locally with COPILOT_CLI_PATH pointing to a local CLI build.

* test: revert skip - will update after CLI release

* test: add compaction e2e tests for all SDK flavors

Add e2e tests for context compaction to Go, Python, and .NET SDKs:
- Test that compaction triggers with low thresholds and emits events
- Test that no compaction events occur when infinite sessions disabled
- Verify session still works after compaction (context preserved via summary)

These tests mirror the existing Node.js compaction tests.

* fix: use %v format for float64 tokensRemoved in Go test

* chore: update @github/copilot CLI to 0.0.394

Updates CLI dependency for Node.js SDK and shared test harness
to support protocol version 2 (infinite sessions).

* style: format compaction tests for all SDKs

* fix: use dict instead of Dict in Python SDK

* fix: correct SessionEventType import in Python compaction test

* feat(go): add Float64 helper function for pointer values

* test: skip .NET compaction tests due to Windows CI proxy timing issues

The compaction tests require the shared test harness proxy, which has
timing issues on Windows CI causing TimeoutException during fixture
initialization. Tests pass on macOS and Ubuntu.

* test: remove .NET compaction tests causing Windows CI fixture issues

The CompactionTests class was causing the E2ETestFixture to fail
initialization on Windows, which cascaded to other test classes.
Removing the tests to unblock CI - the compaction feature is still
tested via Node.js, Go, and Python SDKs.

* Revert "test: remove .NET compaction tests causing Windows CI fixture issues"

This reverts commit bc261a3.

* test: enable .NET compaction tests (remove Skip attributes)

Tests pass locally on macOS and the proxy timeout issue appears to be
unrelated to these specific tests. The ToolsTests fixture timeout
that was seen in CI is a pre-existing flaky issue on Windows.

* fix: increase proxy timeout to 30s on Windows

Windows CI has slower process startup times, especially when multiple
test classes initialize their fixtures in parallel. Increase the proxy
startup timeout from 10s to 30s on Windows to reduce flakiness.
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4 participants