package envoy.extensions.filters.http.a2a.v3

This filter will inspect and get attributes from A2A traffic. [#next-free-field: 6]

A2a.TrafficMode traffic_mode = 1
Configures how the filter handles non-A2A traffic.
optional google.protobuf.UInt32Value max_request_body_size = 3
Maximum size of the request body to buffer for JSON-RPC validation. If the request body exceeds this size, the request is rejected with ``413 Payload Too Large``. This limit applies to both ``REJECT`` and ``PASS_THROUGH`` modes to prevent unbounded buffering. It defaults to 8KB (8192 bytes) and the maximum allowed value is 10MB (10485760 bytes). Setting it to 0 would disable the limit. It is not recommended to do so in production.
optional ParserConfig parser_config = 4
Customized configuration for A2A parser.
A2a.StorageMode storage_mode = 5
Where to store parsed A2A message attributes. Controls whether attributes are written to dynamic metadata, filter state, or both. Default is no storage.

Where to store parsed A2A message attributes.

Used in: A2a

NONE = 0
Default behavior: no storage.
DYNAMIC_METADATA = 1
Store message attributes in dynamic metadata only.
FILTER_STATE = 2
Store message attributes in filter state only.
DYNAMIC_METADATA_AND_FILTER_STATE = 3
Store message attributes in both dynamic metadata and filter state.

Traffic handling mode for non-A2A traffic.

Used in: A2a

string group = 1
The group/category name to assign to this method (e.g., "tasks", "message"). If provided, this overrides any built-in classification for the method. This will be emitted to dynamic metadata under the key specified by ``group_metadata_key``.
repeated string paths = 2
List of attributes to extract for this method, specified by their JSON paths (e.g., "params.name").

Used in: A2a

map<string, MethodParsingConfig> method_configs = 1
Method-specific overrides for grouping and attribute extraction. If a method is not specified in method_configs, or if 'group' is empty in its config, its group will be determined by built-in classification based on method prefix (e.g., "message" for "message/send") and default extraction rules will be applied for that method.
repeated string always_extract_attributes = 2
Attributes that should always be extracted regardless of the method. Specified by their JSON paths (e.g., "params.id").
string group_metadata_key = 3
The dynamic metadata key under which the method's group name will be stored (e.g., "a2a_group"). If this key is empty, group information will not be added to dynamic metadata.

message A2a