feat(low-code): Add API Budget

airbyte_cdk/sources/declarative/declarative_component_schema.yaml

@@ -40,6 +40,12 @@ properties:
     "$ref": "#/definitions/Spec"
   concurrency_level:
     "$ref": "#/definitions/ConcurrencyLevel"
+  api_budget:
+    title: API Budget
+    description: Defines how many requests can be made to the API in a given time frame. This field accepts either a generic APIBudget or an HTTP-specific configuration (HTTPAPIBudget) to be applied across all streams.
+    anyOf:
+      - "$ref": "#/definitions/APIBudget"
+      - "$ref": "#/definitions/HTTPAPIBudget"
   metadata:
     type: object
     description: For internal Airbyte use only - DO NOT modify manually. Used by consumers of declarative manifests for storing related metadata.
@@ -794,7 +800,7 @@ definitions:
         description: This option is used to adjust the upper and lower boundaries of each datetime window to beginning and end of the provided target period (day, week, month)
         type: object
         required:
-        - target
+          - target
         properties:
           target:
             title: Target
@@ -1365,6 +1371,207 @@ definitions:
       $parameters:
         type: object
         additional_properties: true
+  APIBudget:
+    title: API Budget
+    description: >
+      A generic API budget configuration that defines the policies (rate limiting rules)
+      and the maximum number of attempts to acquire a call credit. This budget does not automatically
+      update itself based on HTTP response headers.
+    type: object
+    required:
+      - type
+      - policies
+    properties:
+      type:
+        type: string
+        enum: [APIBudget]
+      policies:
+        title: Policies
+        description: List of call rate policies that define how many calls are allowed.
+        type: array
+        items:
+          anyOf:
+            - "$ref": "#/definitions/FixedWindowCallRatePolicy"
+            - "$ref": "#/definitions/MovingWindowCallRatePolicy"
+            - "$ref": "#/definitions/UnlimitedCallRatePolicy"
+      maximum_attempts_to_acquire:
+        title: Maximum Attempts to Acquire
+        description: The maximum number of attempts to acquire a call before giving up.
+        type: integer
+        default: 100000
+    additionalProperties: true
+  HTTPAPIBudget:
+    title: HTTP API Budget
+    description: >
+      An HTTP-specific API budget that extends APIBudget by updating rate limiting information based
+      on HTTP response headers. It extracts available calls and the next reset timestamp from the HTTP responses.
+    type: object
+    required:
+      - type
+      - policies
+    properties:
+      type:
+        type: string
+        enum: [HTTPAPIBudget]
+      policies:
+        title: Policies
+        description: List of call rate policies that define how many calls are allowed.
+        type: array
+        items:
+          anyOf:
+            - "$ref": "#/definitions/FixedWindowCallRatePolicy"
+            - "$ref": "#/definitions/MovingWindowCallRatePolicy"
+            - "$ref": "#/definitions/UnlimitedCallRatePolicy"
+      ratelimit_reset_header:
+        title: Rate Limit Reset Header
+        description: The HTTP response header name that indicates when the rate limit resets.
+        type: string
+        default: "ratelimit-reset"
+      ratelimit_remaining_header:
+        title: Rate Limit Remaining Header
+        description: The HTTP response header name that indicates the number of remaining allowed calls.
+        type: string
+        default: "ratelimit-remaining"
+      status_codes_for_ratelimit_hit:
+        title: Status Codes for Rate Limit Hit
+        description: List of HTTP status codes that indicate a rate limit has been hit.
+        type: array
+        items:
+          type: integer
+        default: [429]
+      maximum_attempts_to_acquire:
+        title: Maximum Attempts to Acquire
+        description: The maximum number of attempts to acquire a call before giving up.
+        type: integer
+        default: 100000
+    additionalProperties: true
+  FixedWindowCallRatePolicy:
+    title: Fixed Window Call Rate Policy
+    description: A policy that allows a fixed number of calls within a specific time window.
+    type: object
+    required:
+      - type
+      - next_reset_ts
+      - period
+      - call_limit
+      - matchers
+    properties:
+      type:
+        type: string
+        enum: [FixedWindowCallRatePolicy]
+      next_reset_ts:
+        title: Next Reset Timestamp
+        description: The timestamp when the rate limit will reset.
+        type: string
+        format: date-time
+      period:
+        title: Period
+        description: The time interval for the rate limit window.
+        type: string
+        format: duration
+      call_limit:
+        title: Call Limit
+        description: The maximum number of calls allowed within the period.
+        type: integer
+      matchers:
+        title: Matchers
+        description: List of matchers that define which requests this policy applies to.
+        type: array
+        items:
+          "$ref": "#/definitions/HttpRequestMatcher"
+    additionalProperties: true
+  MovingWindowCallRatePolicy:
+    title: Moving Window Call Rate Policy
+    description: A policy that allows a fixed number of calls within a moving time window.
+    type: object
+    required:
+      - type
+      - rates
+      - matchers
+    properties:
+      type:
+        type: string
+        enum: [MovingWindowCallRatePolicy]
+      rates:
+        title: Rates
+        description: List of rates that define the call limits for different time intervals.
+        type: array
+        items:
+          "$ref": "#/definitions/Rate"
+      matchers:
+        title: Matchers
+        description: List of matchers that define which requests this policy applies to.
+        type: array
+        items:
+          "$ref": "#/definitions/HttpRequestMatcher"
+    additionalProperties: true
+  UnlimitedCallRatePolicy:
+    title: Unlimited Call Rate Policy
+    description: A policy that allows unlimited calls for specific requests.
+    type: object
+    required:
+      - type
+      - matchers
+    properties:
+      type:
+        type: string
+        enum: [UnlimitedCallRatePolicy]
+      matchers:
+        title: Matchers
+        description: List of matchers that define which requests this policy applies to.
+        type: array
+        items:
+          "$ref": "#/definitions/HttpRequestMatcher"
+    additionalProperties: true
+  Rate:
+    title: Rate
+    description: Defines a rate limit with a specific number of calls allowed within a time interval.
+    type: object
+    required:
+      - limit
+      - interval
+    properties:
+      limit:
+        title: Limit
+        description: The maximum number of calls allowed within the interval.
+        type: integer
+      interval:
+        title: Interval
+        description: The time interval for the rate limit.
+        type: string
+        format: duration
+    additionalProperties: true
+  HttpRequestMatcher:
+    title: HTTP Request Matcher
+    description: >
+      Matches HTTP requests based on method, base URL, URL path pattern, query parameters, and headers.
+      Use `url_base` to specify the scheme and host (without trailing slash) and
+      `url_path_pattern` to apply a regex to the request path.
+    type: object
+    properties:
+      method:
+        title: Method
+        description: The HTTP method to match (e.g., GET, POST).
+        type: string
+      url_base:
+        title: URL Base
+        description: The base URL (scheme and host, e.g. "https://api.example.com") to match.
+        type: string
+      url_path_pattern:
+        title: URL Path Pattern
+        description: A regular expression pattern to match the URL path.
+        type: string
+      params:
+        title: Parameters
+        description: The query parameters to match.
+        type: object
+        additionalProperties: true
+      headers:
+        title: Headers
+        description: The headers to match.
+        type: object
+        additionalProperties: true
+    additionalProperties: true
   DefaultErrorHandler:
     title: Default Error Handler
     description: Component defining how to handle errors. Default behavior includes only retrying server errors (HTTP 5XX) and too many requests (HTTP 429) with an exponential backoff.

airbyte_cdk/sources/declarative/manifest_declarative_source.py

@@ -137,6 +137,10 @@ def streams(self, config: Mapping[str, Any]) -> List[Stream]:
             self._source_config, config
         )
 
+        api_budget_model = self._source_config.get("api_budget")
+        if api_budget_model:
+            self._constructor.set_api_budget(api_budget_model, config)
+
         source_streams = [
             self._constructor.create_component(
                 DeclarativeStreamModel,