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feat: additional configurations for Kafka Trigger and Output #306

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972cb28
add kafka configs and tests
Nov 14, 2025
b0edc44
change defaults
aloiva Dec 2, 2025
9ef9fd9
Merge branch 'dev' into dev
aloiva Jan 6, 2026
fb17b8e
fix tests
aloiva Jan 18, 2026
97a8da1
Merge branch 'dev' of https://github.com/aloiva/azure-functions-pytho…
aloiva Jan 18, 2026
3c11ed3
Merge branch 'dev' into dev
hallvictoria Jan 22, 2026
69938f4
add pydocs for kafka_trigger and update pydocs for kafka_output
aloiva Jan 27, 2026
ab4bd3d
Merge branch 'dev' of https://github.com/aloiva/azure-functions-pytho…
aloiva Jan 27, 2026
c727aab
fix code quality unit test
aloiva Feb 2, 2026
8220575
Merge branch 'dev' into dev
hallvictoria Feb 6, 2026
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58 changes: 56 additions & 2 deletions azure/functions/decorators/function_app.py
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Original file line number Diff line number Diff line change
Expand Up @@ -30,7 +30,8 @@
from azure.functions.decorators.http import HttpTrigger, HttpOutput, \
HttpMethod
from azure.functions.decorators.kafka import KafkaTrigger, KafkaOutput, \
BrokerAuthenticationMode, BrokerProtocol, OAuthBearerMethod
BrokerAuthenticationMode, BrokerProtocol, OAuthBearerMethod, \
KafkaMessageKeyType
from azure.functions.decorators.queue import QueueTrigger, QueueOutput
from azure.functions.decorators.servicebus import ServiceBusQueueTrigger, \
ServiceBusQueueOutput, ServiceBusTopicTrigger, \
Expand Down Expand Up @@ -1244,12 +1245,19 @@ def kafka_trigger(self,
event_hub_connection_string: Optional[str] = None,
consumer_group: Optional[str] = None,
avro_schema: Optional[str] = None,
key_avro_schema: Optional[str] = None,
key_data_type: Optional[
Union[KafkaMessageKeyType, str]] = KafkaMessageKeyType.STRING,
username: Optional[str] = None,
password: Optional[str] = None,
ssl_key_location: Optional[str] = None,
ssl_ca_location: Optional[str] = None,
ssl_certificate_location: Optional[str] = None,
ssl_key_password: Optional[str] = None,
ssl_certificate_pem: Optional[str] = None,
ssl_key_pem: Optional[str] = None,
ssl_ca_pem: Optional[str] = None,
ssl_certificate_and_key_pem: Optional[str] = None,
schema_registry_url: Optional[str] = None,
schema_registry_username: Optional[str] = None,
schema_registry_password: Optional[str] = None,
Expand Down Expand Up @@ -1287,6 +1295,10 @@ def kafka_trigger(self,
Azure Event Hubs).
:param consumer_group: Kafka consumer group used by the trigger.
:param avro_schema: Used only if a generic Avro record should be generated.
:param key_avro_schema: Avro schema for the message key. Used only if a
generic Avro record should be generated for the key.
:param key_data_type: Data type of the message key. Valid values: Int, Long,
String, Binary. Default is String. Ignored if key_avro_schema is set.
:param username: SASL username for use with the PLAIN or SASL-SCRAM mechanisms.
Equivalent to 'sasl.username' in librdkafka. Default is empty string.
:param password: SASL password for use with the PLAIN or SASL-SCRAM mechanisms.
Expand All @@ -1297,8 +1309,16 @@ def kafka_trigger(self,
certificate. Equivalent to 'ssl.ca.location' in librdkafka.
:param ssl_certificate_location: Path to the client's certificate.
Equivalent to 'ssl.certificate.location' in librdkafka.
:param ssl_key_password: Password for the client’s certificate.
:param ssl_key_password: Password for the client's certificate.
Equivalent to 'ssl.key.password' in librdkafka.
:param ssl_certificate_pem: Client certificate in PEM format.
Equivalent to 'ssl.certificate.pem' in librdkafka.
:param ssl_key_pem: Client private key in PEM format.
Equivalent to 'ssl.key.pem' in librdkafka.
:param ssl_ca_pem: CA certificate for verifying the broker's
certificate in PEM format. Equivalent to 'ssl.ca.pem' in librdkafka.
:param ssl_certificate_and_key_pem: Client certificate concatenated
with key in PEM format. Can also support KeyVault references.
:param schema_registry_url: URL of the Avro Schema Registry.
:param schema_registry_username: Username for the Schema Registry.
:param schema_registry_password: Password for the Schema Registry.
Expand All @@ -1319,6 +1339,7 @@ def kafka_trigger(self,
ScramSha256, ScramSha512. Default: Plain. Equivalent to 'sasl.mechanism'.
:param protocol: Security protocol used to communicate with brokers.
Default: plaintext. Equivalent to 'security.protocol'.
:param cardinality: Set to "many" to enable batching. Default is "One".
:param lag_threshold: Max number of unprocessed messages per worker instance.
Used in scaling logic to estimate needed worker instances. Default is 1000.
:param data_type: Defines how Functions runtime should treat the parameter value.
Expand All @@ -1338,12 +1359,19 @@ def decorator():
event_hub_connection_string=event_hub_connection_string, # noqa: E501
consumer_group=consumer_group,
avro_schema=avro_schema,
key_avro_schema=key_avro_schema,
key_data_type=parse_singular_param_to_enum(
key_data_type, KafkaMessageKeyType),
username=username,
password=password,
ssl_key_location=ssl_key_location,
ssl_ca_location=ssl_ca_location,
ssl_certificate_location=ssl_certificate_location,
ssl_key_password=ssl_key_password,
ssl_certificate_pem=ssl_certificate_pem,
ssl_key_pem=ssl_key_pem,
ssl_ca_pem=ssl_ca_pem,
ssl_certificate_and_key_pem=ssl_certificate_and_key_pem,
schema_registry_url=schema_registry_url,
schema_registry_username=schema_registry_username,
schema_registry_password=schema_registry_password,
Expand Down Expand Up @@ -2646,12 +2674,19 @@ def kafka_output(self,
topic: str,
broker_list: str,
avro_schema: Optional[str] = None,
key_avro_schema: Optional[str] = None,
key_data_type: Optional[
Union[KafkaMessageKeyType, str]] = KafkaMessageKeyType.STRING,
username: Optional[str] = None,
password: Optional[str] = None,
ssl_key_location: Optional[str] = None,
ssl_ca_location: Optional[str] = None,
ssl_certificate_location: Optional[str] = None,
ssl_key_password: Optional[str] = None,
ssl_certificate_pem: Optional[str] = None,
ssl_key_pem: Optional[str] = None,
ssl_ca_pem: Optional[str] = None,
ssl_certificate_and_key_pem: Optional[str] = None,
schema_registry_url: Optional[str] = None,
schema_registry_username: Optional[str] = None,
schema_registry_password: Optional[str] = None,
Expand Down Expand Up @@ -2688,6 +2723,10 @@ def kafka_output(self,
:param topic: The Kafka topic to which messages are published.
:param broker_list: The list of Kafka brokers to which the producer connects.
:param avro_schema: Optional. Avro schema to generate a generic record.
:param key_avro_schema: Avro schema for the message key. Used only if a
generic Avro record should be generated for the key.
:param key_data_type: Data type of the message key. Valid values: Int, Long,
String, Binary. Default is String. Ignored if key_avro_schema is set.
:param username: SASL username for use with the PLAIN and SASL-SCRAM
mechanisms. Equivalent to `'sasl.username'` in librdkafka.
:param password: SASL password for use with the PLAIN and SASL-SCRAM
Expand All @@ -2700,6 +2739,14 @@ def kafka_output(self,
Equivalent to `'ssl.certificate.location'` in librdkafka.
:param ssl_key_password: Password for the client's SSL key.
Equivalent to `'ssl.key.password'` in librdkafka.
:param ssl_certificate_pem: Client certificate in PEM format.
Equivalent to 'ssl.certificate.pem' in librdkafka.
:param ssl_key_pem: Client private key in PEM format.
Equivalent to 'ssl.key.pem' in librdkafka.
:param ssl_ca_pem: CA certificate for verifying the broker's
certificate in PEM format. Equivalent to 'ssl.ca.pem' in librdkafka.
:param ssl_certificate_and_key_pem: Client certificate concatenated
with key in PEM format. Can also support KeyVault references.
:param schema_registry_url: URL of the Avro Schema Registry.
:param schema_registry_username: Username for accessing the Schema Registry.
:param schema_registry_password: Password for accessing the Schema Registry.
Expand Down Expand Up @@ -2753,12 +2800,19 @@ def decorator():
topic=topic,
broker_list=broker_list,
avro_schema=avro_schema,
key_avro_schema=key_avro_schema,
key_data_type=parse_singular_param_to_enum(
key_data_type, KafkaMessageKeyType),
username=username,
password=password,
ssl_key_location=ssl_key_location,
ssl_ca_location=ssl_ca_location,
ssl_certificate_location=ssl_certificate_location,
ssl_key_password=ssl_key_password,
ssl_certificate_pem=ssl_certificate_pem,
ssl_key_pem=ssl_key_pem,
ssl_ca_pem=ssl_ca_pem,
ssl_certificate_and_key_pem=ssl_certificate_and_key_pem,
schema_registry_url=schema_registry_url,
schema_registry_username=schema_registry_username,
schema_registry_password=schema_registry_password,
Expand Down
73 changes: 52 additions & 21 deletions azure/functions/decorators/kafka.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,13 @@ class OAuthBearerMethod(StringifyEnum):
OIDC = 1


class KafkaMessageKeyType(StringifyEnum):
INT = 0
LONG = 1
STRING = 2
BINARY = 3


class KafkaOutput(OutputBinding):
@staticmethod
def get_binding_name() -> str:
Expand All @@ -39,15 +46,21 @@ def __init__(self,
topic: str,
broker_list: str,
avro_schema: Optional[str],
username: Optional[str],
password: Optional[str],
ssl_key_location: Optional[str],
ssl_ca_location: Optional[str],
ssl_certificate_location: Optional[str],
ssl_key_password: Optional[str],
schema_registry_url: Optional[str],
schema_registry_username: Optional[str],
schema_registry_password: Optional[str],
key_avro_schema: Optional[str] = None,
key_data_type: Optional[KafkaMessageKeyType] = KafkaMessageKeyType.STRING,
username: Optional[str] = None,
password: Optional[str] = None,
ssl_key_location: Optional[str] = None,
ssl_ca_location: Optional[str] = None,
ssl_certificate_location: Optional[str] = None,
ssl_key_password: Optional[str] = None,
ssl_certificate_pem: Optional[str] = None,
ssl_key_pem: Optional[str] = None,
ssl_ca_pem: Optional[str] = None,
ssl_certificate_and_key_pem: Optional[str] = None,
schema_registry_url: Optional[str] = None,
schema_registry_username: Optional[str] = None,
schema_registry_password: Optional[str] = None,
o_auth_bearer_method: Optional[OAuthBearerMethod] = None,
o_auth_bearer_client_id: Optional[str] = None,
o_auth_bearer_client_secret: Optional[str] = None,
Expand All @@ -68,12 +81,18 @@ def __init__(self,
self.topic = topic
self.broker_list = broker_list
self.avro_schema = avro_schema
self.key_avro_schema = key_avro_schema
self.key_data_type = key_data_type
self.username = username
self.password = password
self.ssl_key_location = ssl_key_location
self.ssl_ca_location = ssl_ca_location
self.ssl_certificate_location = ssl_certificate_location
self.ssl_key_password = ssl_key_password
self.ssl_certificate_pem = ssl_certificate_pem
self.ssl_key_pem = ssl_key_pem
self.ssl_ca_pem = ssl_ca_pem
self.ssl_certificate_and_key_pem = ssl_certificate_and_key_pem
self.schema_registry_url = schema_registry_url
self.schema_registry_username = schema_registry_username
self.schema_registry_password = schema_registry_password
Expand Down Expand Up @@ -104,18 +123,24 @@ def __init__(self,
name: str,
topic: str,
broker_list: str,
event_hub_connection_string: Optional[str],
consumer_group: Optional[str],
avro_schema: Optional[str],
username: Optional[str],
password: Optional[str],
ssl_key_location: Optional[str],
ssl_ca_location: Optional[str],
ssl_certificate_location: Optional[str],
ssl_key_password: Optional[str],
schema_registry_url: Optional[str],
schema_registry_username: Optional[str],
schema_registry_password: Optional[str],
event_hub_connection_string: Optional[str] = None,
consumer_group: Optional[str] = None,
avro_schema: Optional[str] = None,
key_avro_schema: Optional[str] = None,
key_data_type: Optional[KafkaMessageKeyType] = KafkaMessageKeyType.STRING,
username: Optional[str] = None,
password: Optional[str] = None,
ssl_key_location: Optional[str] = None,
ssl_ca_location: Optional[str] = None,
ssl_certificate_location: Optional[str] = None,
ssl_key_password: Optional[str] = None,
ssl_certificate_pem: Optional[str] = None,
ssl_key_pem: Optional[str] = None,
ssl_ca_pem: Optional[str] = None,
ssl_certificate_and_key_pem: Optional[str] = None,
schema_registry_url: Optional[str] = None,
schema_registry_username: Optional[str] = None,
schema_registry_password: Optional[str] = None,
o_auth_bearer_method: Optional[OAuthBearerMethod] = None,
o_auth_bearer_client_id: Optional[str] = None,
o_auth_bearer_client_secret: Optional[str] = None,
Expand All @@ -133,12 +158,18 @@ def __init__(self,
self.event_hub_connection_string = event_hub_connection_string
self.consumer_group = consumer_group
self.avro_schema = avro_schema
self.key_avro_schema = key_avro_schema
self.key_data_type = key_data_type
self.username = username
self.password = password
self.ssl_key_location = ssl_key_location
self.ssl_ca_location = ssl_ca_location
self.ssl_certificate_location = ssl_certificate_location
self.ssl_key_password = ssl_key_password
self.ssl_certificate_pem = ssl_certificate_pem
self.ssl_key_pem = ssl_key_pem
self.ssl_ca_pem = ssl_ca_pem
self.ssl_certificate_and_key_pem = ssl_certificate_and_key_pem
self.schema_registry_url = schema_registry_url
self.schema_registry_username = schema_registry_username
self.schema_registry_password = schema_registry_password
Expand Down
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