https://linear.app/n8n/issue/PAY-933/set-up-leader-selection-for-multiple-main-instances
- [x] Set up new envs
- [x] Add config and license checks
- [x] Implement `MultiMainInstancePublisher`
- [x] Expand `RedisServicePubSubPublisher` to support
`MultiMainInstancePublisher`
- [x] Init `MultiMainInstancePublisher` on startup and destroy on
shutdown
- [x] Add to sandbox plans
- [x] Test manually
Note: This is only for setup - coordinating in reaction to leadership
changes will come in later PRs.
This change ensures that things like `encryptionKey` and `instanceId`
are always available directly where they are needed, instead of passing
them around throughout the code.
This PR adds a message for queue mode which triggers an external secrets
provider reload inside the workers if the configuration has changed on
the main instance.
It also refactors some of the message handler code to remove cyclic
dependencies, as well as remove unnecessary duplicate redis clients
inside services (thanks to no more cyclic deps)
all commands sent between main instance and workers need to contain a
server id to prevent senders from reacting to their own messages,
causing loops
this PR makes sure all sent messages contain a sender id by default as
part of constructing a sending redis client.
---------
Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>
This PR implements the updated license SDK so that worker and webhook
instances do not auto-renew licenses any more.
Instead, they receive a `reloadLicense` command via the Redis client
that will fetch the updated license after it was saved on the main
instance
This also contains some refactoring with moving redis sub and pub
clients into the event bus directly, to prevent cyclic dependency
issues.
# Motivation
In Queue mode, finished executions would cause the main instance to
always pull all execution data from the database, unflatten it and then
use it to send out event log events and telemetry events, as well as
required returns to Respond to Webhook nodes etc.
This could cause OOM errors when the data was large, since it had to be
fully unpacked and transformed on the main instance’s side, using up a
lot of memory (and time).
This PR attempts to limit this behaviour to only happen in those
required cases where the data has to be forwarded to some waiting
webhook, for example.
# Changes
Execution data is only required in cases, where the active execution has
a `postExecutePromise` attached to it. These usually forward the data to
some other endpoint (e.g. a listening webhook connection).
By adding a helper `getPostExecutePromiseCount()`, we can decide that in
cases where there is nothing listening at all, there is no reason to
pull the data on the main instance.
Previously, there would always be postExecutePromises because the
telemetry events were called. Now, these have been moved into the
workers, which have been given the various InternalHooks calls to their
hook function arrays, so they themselves issue these telemetry and event
calls.
This results in all event log messages to now be logged on the worker’s
event log, as well as the worker’s eventbus being the one to send out
the events to destinations. The main event log does…pretty much nothing.
We are not logging executions on the main event log any more, because
this would require all events to be replicated 1:1 from the workers to
the main instance(s) (this IS possible and implemented, see the worker’s
`replicateToRedisEventLogFunction` - but it is not enabled to reduce the
amount of traffic over redis).
Partial events in the main log could confuse the recovery process and
would result in, ironically, the recovery corrupting the execution data
by considering them crashed.
# Refactor
I have also used the opportunity to reduce duplicate code and move some
of the hook functionality into
`packages/cli/src/executionLifecycleHooks/shared/sharedHookFunctions.ts`
in preparation for a future full refactor of the hooks
This PR adds new endpoints to the REST API:
`/orchestration/worker/status` and `/orchestration/worker/id`
Currently these just trigger the return of status / ids from the workers
via the redis back channel, this still needs to be handled and passed
through to the frontend.
It also adds the eventbus to each worker, and triggers a reload of those
eventbus instances when the configuration changes on the main instances.
Issue: during startup, unfinished executions trigger a recovery process
that, under certain circumstances, can in itself crash the instance
(e.g. by running our of memory), resulting in an infinite recovery loop
This PR aims to change this behaviour by writing a flag file when the
recovery process starts, and removing it when it finishes. In the case
of a crash, this flag will persist and upon the next attempt, the
recovery will instead do the absolute minimal (marking executions as
'crashed'), without attempting any 'crashable' actions.
* first commit for postgres migration
* (not working)
* sqlite migration
* quicksave
* fix tests
* fix pg test
* fix postgres
* fix variables import
* fix execution saving
* add user settings fix
* change migration to single lines
* patch preferences endpoint
* cleanup
* improve variable import
* cleanup unusued code
* Update packages/cli/src/PublicApi/v1/handlers/workflows/workflows.handler.ts
Co-authored-by: Omar Ajoue <krynble@gmail.com>
* address review notes
* fix var update/import
* refactor: Separate execution data to its own table (#6323)
* wip: Temporary migration process
* refactor: Create boilerplate repository methods for executions
* fix: Lint issues
* refactor: Added search endpoint to repository
* refactor: Make the execution list work again
* wip: Updating how we create and update executions everywhere
* fix: Lint issues and remove most of the direct access to execution model
* refactor: Remove includeWorkflowData flag and fix more tests
* fix: Lint issues
* fix: Fixed ordering of executions for FE, removed transaction when saving execution and removed unnecessary update
* refactor: Add comment about missing feature
* refactor: Refactor counting executions
* refactor: Add migration for other dbms and fix issues found
* refactor: Fix lint issues
* refactor: Remove unnecessary comment and auto inject repo to internal hooks
* refactor: remove type assertion
* fix: Fix broken tests
* fix: Remove unnecessary import
* Remove unnecessary toString() call
Co-authored-by: Iván Ovejero <ivov.src@gmail.com>
* fix: Address comments after review
* refactor: Remove unused import
* fix: Lint issues
* fix: Add correct migration files
---------
Co-authored-by: Iván Ovejero <ivov.src@gmail.com>
* remove null values from credential export
* fix: Fix an issue with queue mode where all running execution would be returned
* fix: Update n8n node to allow for workflow ids with letters
* set upstream on set branch
* remove typo
* add nodeAccess to credentials
* fix unsaved run check for undefined id
* fix(core): Rename version control feature to source control (#6480)
* rename versionControl to sourceControl
* fix source control tooltip wording
---------
Co-authored-by: Romain Minaud <romain.minaud@gmail.com>
* fix(editor): Pay 548 hide the set up version control button (#6485)
* feat(DebugHelper Node): Fix and include in main app (#6406)
* improve node a bit
* fixing continueOnFail() ton contain error in json
* improve pairedItem
* fix random data returning object results
* fix nanoId length typo
* update pnpm-lock file
---------
Co-authored-by: Marcus <marcus@n8n.io>
* fix(editor): Remove setup source control CTA button
* fix(editor): Remove setup source control CTA button
---------
Co-authored-by: Michael Auerswald <michael.auerswald@gmail.com>
Co-authored-by: Marcus <marcus@n8n.io>
* fix(editor): Update source control docs links (#6488)
* feat(DebugHelper Node): Fix and include in main app (#6406)
* improve node a bit
* fixing continueOnFail() ton contain error in json
* improve pairedItem
* fix random data returning object results
* fix nanoId length typo
* update pnpm-lock file
---------
Co-authored-by: Marcus <marcus@n8n.io>
* feat(editor): Replace root events with event bus events (no-changelog) (#6454)
* feat: replace root events with event bus events
* fix: prevent cypress from replacing global with globalThis in import path
* feat: remove emitter mixin
* fix: replace component events with event bus
* fix: fix linting issue
* fix: fix breaking expression switch
* chore: prettify ndv e2e suite code
* fix(editor): Update source control docs links
---------
Co-authored-by: Michael Auerswald <michael.auerswald@gmail.com>
Co-authored-by: Marcus <marcus@n8n.io>
Co-authored-by: Alex Grozav <alex@grozav.com>
* fix tag endpoint regex
---------
Co-authored-by: Omar Ajoue <krynble@gmail.com>
Co-authored-by: Iván Ovejero <ivov.src@gmail.com>
Co-authored-by: Romain Minaud <romain.minaud@gmail.com>
Co-authored-by: Csaba Tuncsik <csaba@n8n.io>
Co-authored-by: Marcus <marcus@n8n.io>
Co-authored-by: Alex Grozav <alex@grozav.com>
* fix calling error workflows in main mode recovery
* cleanup
* remove WorkflowExecuteAdditionalData export from index
* revert refactor to fix test
* Update index.ts
---------
Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <netroy@users.noreply.github.com>
* use typedi for UserManagementMailer
* use typedi for SamlService
* fix typos
* use typedi for Queue
* use typedi for License
* convert some more code to use typedi
* add typedi
* convert ActiveWorkflowRunner into an injectable service
* convert ExternalHooks into an injectable service
* convert InternalHooks into an injectable service
* convert LoadNodesAndCredentials into an injectable service
* convert NodeTypes and CredentialTypes into an injectable service
* convert ActiveExecutions into an injectable service
* convert WaitTracker into an injectable service
* convert Push into an injectable service
* convert ActiveWebhooks and TestWebhooks into an injectable services
* handle circular references, and log errors when a circular dependency is found
* adds ExecutionEvents view modal to ExecutionList
* fix time rendering and remove wf column
* checks for unfinished executions and fails them
* prevent re-setting stoppedAt for execution
* some cleanup / manually create rundata after crash
* quicksave
* remove Threads lib, log worker rewrite
* cleanup comment
* fix sentry destination return value
* test for tests...
* run tests with single worker
* fix tests
* remove console log
* add endpoint for execution data recovery
* lint cleanup and some refactoring
* fix accidental recursion
* remove cyclic imports
* add rundata recovery to Workflowrunner
* remove comments
* cleanup and refactor
* adds a status field to executions
* setExecutionStatus on queued worker
* fix onWorkflowPostExecute
* set waiting from worker
* get crashed status into frontend
* remove comment
* merge fix
* cleanup
* catch empty rundata in recovery
* refactor IExecutionsSummary and inject nodeExecution Errors
* reduce default event log size to 10mb from 100mb
* add per node execution status
* lint fix
* merge and lint fix
* phrasing change
* improve preview rendering and messaging
* remove debug
* Improve partial rundata recovery
* fix labels
* fix line through
* send manual rundata to ui at crash
* some type and msg push fixes
* improve recovered item rendering in preview
* update workflowStatistics on recover
* merge fix
* review fixes
* merge fix
* notify eventbus when ui is back up
* add a small timeout to make sure the UI is back up
* increase reconnect timeout to 30s
* adjust recover timeout and ui connection lost msg
* do not stop execution in editor after x reconnects
* add executionRecovered push event
* fix recovered connection not green
* remove reconnect toast and merge existing rundata
* merge editor and recovered data for own mode
* create prometheus metrics from events
* feat(core): Add more Prometheus metrics (experimental) (#5187)
* refactor(core): Add Prometheus labels to relevant metrics
* feat(core): Add more Prometheus metrics (experimental)
* add 'v' prefix to value of version label
Co-authored-by: Cornelius Suermann <cornelius@n8n.io>
* adds ExecutionEvents view modal to ExecutionList
* fix time rendering and remove wf column
* checks for unfinished executions and fails them
* prevent re-setting stoppedAt for execution
* removing UI changes but keeping eventbus fixes
* remove comment
* store n8n version string in a const and use that everywhere
* reduce code duplication between Server and WebhookServer
* unify redis checks
* fix linting
