AbstractThe canonical integration name (e.g., "HubSpot", "Rasa.io"). Used by GetActionGeneratorConfig() and IntegrationActionExecutor to match connectors to action Config.IntegrationName.
Override in subclasses. Defaults to the class name.
Highest SAFE per-layer concurrency the source tolerates (plan.md §7 peak parallelization) — the
ceiling the engine's adaptive controller ramps toward. null → use configured syncConcurrency.
Whether the watermark this connector returns (FetchBatchResult.NewWatermarkValue) is a
RELIABLE, monotonically-increasing global maximum — i.e. the connector fetches in watermark
order so the last batch's value IS the true high-water mark, and an updated record always
re-surfaces at a NEW (higher) watermark. When true, the engine uses that watermark to NARROW
the next incremental (instead of advancing a full sync to wall-clock "now", and instead of the
keyset clear-and-re-scan), so incrementals fetch only what's new.
Default false — the safe, backwards-compatible choice: a connector whose source returns
records out of watermark order (e.g. HubSpot's creation-ordered list API, where the last batch
can carry old modstamps) MUST stay false so the engine keeps advancing to "now" and never saves
a stale watermark. Override to true ONLY when the source guarantees monotonic ordering.
Token-bucket rate-limit policy for this connector's source API (plan.md §7 peak-aware rate
limiting). null → the engine derives a conservative rate from Integration.BatchRequestWaitTime.
Override to push to the source's real limits.
Whether this connector supports batched target writes (plan.md §7 aggressive batching).
Whether this connector supports creating new records in the external system.
Whether this connector supports deleting records from the external system.
Whether this connector supports reading/fetching records. Always true.
Whether this connector supports paginated listing of records.
Whether this connector supports searching/querying records with filters.
Whether this connector supports updating existing records in the external system.
Whether this connector supports idempotent upserts (create-or-update keyed
by a unique business property). Connectors override this AND Upsert to enable it.
Batch-create. Default loops single-record CreateRecord, so the engine may always call the batch form.
Batch-delete. Default loops single-record DeleteRecord.
Batch-update. Default loops single-record UpdateRecord.
ProtectedBuildBuilds a CRUDResult for a record CREATE, failing LOUDLY when the external system returned no usable record ID. A 2xx response with an empty/undefined ID means the create did not durably produce a record we can track — returning Success:true there silently loses the record and causes duplicate creates on the next sync (the HubSpot-association class of bug, fixed in next commit 9f718a7e). This makes that failure explicit at the connector boundary.
Creates a new record in the external system.
Override in subclasses that support write operations.
Check SupportsCreate before calling.
Deletes a record from the external system.
Override in subclasses that support delete operations.
Check SupportsDelete before calling.
AbstractDiscoverDiscovers fields on a specific external object.
The company integration entity with connection credentials
Name of the external object to inspect
User context for authorization
Array of field schemas for the specified object
Discovery via the connector's READ PATH (FetchChanges), TIME-BOUNDED — the way to gather a statistically-significant sample when a single DiscoverFields sample is too small to PROVE a key. "Discovery is the sync read path with the save removed."
Loops FetchChanges as a read-only FULL fetch (WatermarkValue=null, nothing persisted), threading pagination/keyset cursors across batches, and streams every record through the data-informed field + provable-PK inference. It stops at the discovery TIME BUDGET (default 5 min), or a record cap, or source exhaustion — whichever comes first — so the provable-PK decision is made on as much real data as the budget allows. It NEVER fabricates a key: if even this larger sample yields no provable single/composite PK, the field set comes back PK-less and the object is honestly not added.
Falls back to the single-sample DiscoverFields if the read path can't run for this object (e.g. a connector whose FetchChanges needs an already-persisted IO row that doesn't exist yet).
ProtectedDiscoverStage-2 field discovery for sources WITHOUT a describe/introspection endpoint (file feeds,
undocumented JSON list endpoints): stream the source's actual records — READ-ONLY, no save,
no ack — and derive the full field set + data-informed PK/uniqueness/nullability from the
gathered statistics. The connector supplies whatever read-only fetch yields the records; this
helper turns that stream into ExternalFieldSchema[].
Why data-informed: streaming the real values lets pickPrimaryKeyFromStats pick the PK from
evidence (uniqueness/non-null statistics) COMBINED with the naming convention, rather than a
name guess alone. The PK is a SOFT key, so the pick is best-available, not strict-significance:
a confident unique+non-null column wins outright; otherwise a near-unique / convention-named
column is taken as a soft key (a PK-less object would stall CodeGen). The scan is time-bounded —
it stops on exhaustion OR opts.Discovery.TimeBudgetMs; more rows simply mean stronger claims.
Provable-only encoding into the standard flags:
IsPrimaryKey — set ONLY on the single statistics-first pick. Multiple equally-ranked unique
columns leave PK unset here (ambiguous → the pipeline's SoftPKClassifier LLM tiebreaker
decides, fed these same stats). Zero unique columns → no PK is fabricated.IsUniqueKey — set when the column was all-distinct over the scan AND uniqueness was provable
(the distinct-cap wasn't hit).AllowsNull — asserted true ONLY when a null/absent value was actually observed; otherwise
left undefined (permissive default). Never fabricates NOT NULL — critical under a time-capped
partial scan where unseen rows could still be null.The PK emitted here is SOFT (it rides additionalSchemaInfo via the persist + DDL path; it is
NEVER a hard DB key), so a wrong inference can never reject a valid row — the engine dedupes via
the record-map. IsReadOnly defaults to true (stream discovery targets read feeds); a writable
source overrides via opts.ReadOnly.
A read-only sync/async iterable of source records (the caller's fetch yields them).
OptionalDiscovery?: StreamDiscoveryOptionsTime budget / sample caps for the scan (see StreamDiscoveryOptions).
OptionalPk?: PkPickOptionsSignificance threshold + naming-rank tiebreaker (see PkPickOptions).
OptionalReadOnly?: booleanWhether discovered fields are read-only. Default true.
AbstractDiscoverDiscovers available objects/tables in the external system.
The company integration entity with connection credentials
User context for authorization
Array of object schemas available for integration
ProtectedDiscoveryThe record source DiscoverFieldsViaFetch streams for field/PK inference. Default: loop
FetchChanges (full fetch), yielding each record's fields until maxRecords. A protocol subclass
(e.g. REST) overrides this to sample a template-var CHILD with the correct record-constrained,
recursive stream. Yields plain field maps; the caller stops it at maxRecords.
Parse a Retry-After / rate-limit signal out of a failed response or thrown error into
milliseconds so the engine can back off precisely. Return undefined when the error is not a
throttle (or carries no hint).
AbstractFetchFetches a batch of changed records from the external system. Supports incremental fetching via watermarks.
Context containing connection info, object name, and watermark
Batch of external records with pagination info
Returns the ActionGeneratorConfig for this connector, combining the integration name, category, icon, and objects into a ready-to-use configuration for ActionMetadataGenerator.Generate().
Override in subclasses to customize the config (e.g., icon, category). Returns null by default if GetIntegrationObjects() returns empty.
Returns a proposed default configuration for quick setup. Override in subclasses to provide connector-specific defaults including schema name, objects to sync, and field mappings. Returns null by default (no quick setup available).
Returns suggested default field mappings for an external object to MJ entity. Override in subclasses to provide intelligent defaults.
Name of the external object
Name of the target MJ entity
Array of default field mappings (empty by default)
Returns the integration objects and their fields that this connector supports, for use by the ActionMetadataGenerator. This is static metadata that does NOT require a live connection — it describes the connector's known object model.
Override in subclasses to provide connector-specific objects/fields. Returns an empty array by default (no action generation available).
Retrieves a single record by ID from the external system. Override in subclasses that support direct record retrieval.
Optionaloptions: IntrospectSchemaOptionsLists records with cursor-based pagination.
Override in subclasses that support paginated listing.
Check SupportsListing before calling.
Type-driven post-processing hook (plan.md §10): a connector may normalize/enforce a record's
values to the resolved column formats AFTER transform/normalize and BEFORE write. Default
returns the record unchanged. (Named for this system — NOT MCP, not take.) The engine ALSO
applies target-type constraint enforcement; this is the connector-side complement.
Searches for records matching the given filters.
Override in subclasses that support search/query operations.
Check SupportsSearch before calling.
Name of a stable, monotonic ordering key (PK/identity) usable for KEYSET/seek resume on
watermark-less objects (plan.md §7 — resume from last-seen key, robust to mid-stream
insert/delete). null → keyset resume unavailable for this object.
AbstractTestTests connectivity to the external system.
The company integration entity with connection credentials
User context for authorization
Connection test result with success/failure and message
Updates an existing record in the external system.
Override in subclasses that support write operations.
Check SupportsUpdate before calling.
Upserts a record — a single idempotent create-or-update keyed by a unique
business property (e.g. email), eliminating the search-then-create race window.
Override in subclasses whose external system exposes a keyed upsert primitive.
Check SupportsUpsert before calling.
§7 — does this connector's discovery (DiscoverObjects/DiscoverFields → IntrospectSchema) return the AUTHORITATIVE, COMPLETE gamut of objects/fields the credentials expose? Default false (safe): a connector must explicitly affirm this. Override to
trueONLY when DiscoverObjects hits a real list/describe endpoint that returns EVERYTHING accessible — so an object/field absent from a refresh genuinely means the source dropped it (and may be deactivated). Leave false for stubbed discovery (returns nothing → static metadata is all we have), a cache-driven IntrospectSchema, or any partial/scoped enumeration — there, absence proves nothing and MUST NOT deactivate.