* fix(initial_setup): upsert by (user_id, name) when loading flows from disk Langflow fails to start with IntegrityError on the unique_flow_name constraint when LANGFLOW_LOAD_FLOWS_PATH is used in CI/CD pipelines and the flow file's id differs from the DB record's id (e.g. nightly upgrade, regenerated UUIDs, fresh DB). Manual DB intervention was the only workaround. Root cause: find_existing_flow only looked up by endpoint_name and id, never by (user_id, name). The unique constraint is on (user_id, name), so when those lookups missed, the loader fell through to INSERT and PostgreSQL rejected it. Fix: - find_existing_flow now takes optional keyword args (user_id, name) and falls back to a (user_id, name) lookup when endpoint_name/id don't match. The endpoint_name branch is also scoped by user_id when supplied so it can't accidentally return another user's flow. - upsert_flow_from_file passes name and user_id to find_existing_flow. When the match is by name (existing.id != file's flow_id), the DB id is preserved during the setattr loop -- rewriting it from under FK referrers was unsafe and was never required by the original logic. Tests: 8 regression tests cover lookup precedence (id wins, endpoint scoped by user, name fallback fires only when id misses), the reporter's scenario (no IntegrityError on repeated import with differing file ids), DB-id preservation on name-match, and a no-regression case where matched-by-id behavior is unchanged. Fixes the CI/CD upgrade failure reported in IBM Cloud Slack (C06SUKEN3LJ thread 1777992833.170099). * fix(initial_setup): fix matched_by_id on SQLite, improve update log message Normalize existing.id to UUID before the matched_by_id comparison. On SQLite, SQLAlchemy can return ids as strings; str == UUID is always False, so matched_by_id would silently be wrong and the file id would be dropped even on a genuine id-match. Improve the update log to include the DB id and flow name alongside the file's UUID so the CI/CD upgrade scenario (name-matched upsert with differing UUIDs) is debuggable from logs. * [autofix.ci] apply automated fixes * fix: Preserve db id * [autofix.ci] apply automated fixes * feat: Add flag to control name matching overwrite * [autofix.ci] apply automated fixes * Flip the default value for the flag * Update test_upsert_flow_from_file.py * fix: Sqlalchemy-based crash on startup --------- Co-authored-by: Jordan Frazier <jordan.frazier@datastax.com> Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Website
This website is built using Docusaurus 3, a modern static website generator.
Installation
$ npm install
Local Development
$ npm run start
This command starts a local development server and opens up a browser window. Most changes are reflected live without having to restart the server.
Build
$ npm run build
This command generates static content into the build directory and can be served using any static contents hosting service, including npm run serve.
Import code snippets from the repo with a line range
To pull a slice of a file into the docs, source the content with raw-loader and present the code with the CodeSnippet component.
For a working example, see the Components overview.
import CodeSnippet from "@site/src/components/CodeSnippet";
import customComponent from "!!raw-loader!@langflow/src/lfx/src/lfx/custom/custom_component/custom_component.py";
<CodeSnippet
source={customComponent}
startLine={41}
endLine={74}
language="python"
title="CustomComponent metadata (from codebase)"
showLineNumbers
/>
Docusaurus Versioning
The versioning configuration is found in docusaurus.config.js.
Versioning example for release version 1.9.x on top of 1.8.x:
- Before release, the docs in the active release branch should already be set to
1.8.x, the current version. - When ready to release
1.9.x, create a branch and runnpm run docs:version -- 1.9.0to snapshot the current docs. - After creating a new version, update
docusaurus.config.jsto include the 1.9.0 release:
docs: {
lastVersion: '1.9.0',
versions: {
'1.9.0': {
label: '1.9.x',
path: '1.9.0',
},
'1.8.0': {
label: '1.8.x',
path: '1.8.0',
},
},
},
- Test the deployment locally:
npm run build
npm run serve
- Create a pull request to main, and merge to create your new release.
- To create version 2.0.x, repeat the process: update the active release branch docs to
2.0.xwhen you begin working on it, then when ready to release, runnpm run docs:version -- 2.0.0, updatedocusaurus.config.jswith labels using.xnotation, and merge to main.
lastVersion= the most recent released version (shown as "latest" in the UI).
See the Docusaurus docs for more info.
Disable versioning
- Remove the versions configuration from
docusaurus.config.js. - Delete the
docs/versioned_docs/anddocs/versioned_sidebars/directories. - Delete
docs/versions.json.
References
Deployment
Using SSH:
$ USE_SSH=true npm run deploy
Not using SSH:
$ GIT_USER=<Your GitHub username> npm run deploy
If you are using GitHub pages for hosting, this command is a convenient way to build the website and push to the gh-pages branch.