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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| #!/usr/bin/env python3 | ||
| # Copyright 2023 Canonical Ltd. | ||
| # See LICENSE file for licensing details. | ||
| import logging | ||
| from pathlib import Path | ||
| from subprocess import PIPE, check_output | ||
| from typing import Any, Dict | ||
|
|
||
| import yaml | ||
| from charms.kafka.v0.client import KafkaClient | ||
| from kafka.admin import NewTopic | ||
|
|
||
| from snap import KafkaSnap | ||
|
|
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| METADATA = yaml.safe_load(Path("./metadata.yaml").read_text()) | ||
| APP_NAME = METADATA["name"] | ||
| ZK_NAME = "zookeeper" | ||
| REL_NAME_ADMIN = "kafka-client-admin" | ||
|
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| logger = logging.getLogger(__name__) | ||
|
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|
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| def produce_and_check_logs( | ||
| model_full_name: str, kafka_unit_name: str, provider_unit_name: str, topic: str | ||
| ) -> None: | ||
| """Produces messages from HN to chosen Kafka topic. | ||
| Args: | ||
| model_full_name: the full name of the model | ||
| kafka_unit_name: the kafka unit to checks logs on | ||
| provider_unit_name: the app to grab credentials from | ||
| topic: the desired topic to produce to | ||
| Raises: | ||
| KeyError: if missing relation data | ||
| AssertionError: if logs aren't found for desired topic | ||
| """ | ||
| relation_data = get_provider_data( | ||
| unit_name=provider_unit_name, | ||
| model_full_name=model_full_name, | ||
| endpoint="kafka-client-admin", | ||
| ) | ||
| topic = topic | ||
| username = relation_data.get("username", None) | ||
| password = relation_data.get("password", None) | ||
| servers = relation_data.get("endpoints", "").split(",") | ||
| security_protocol = "SASL_PLAINTEXT" | ||
|
|
||
| if not (username and password and servers): | ||
| raise KeyError("missing relation data from app charm") | ||
|
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| client = KafkaClient( | ||
| servers=servers, | ||
| username=username, | ||
| password=password, | ||
| security_protocol=security_protocol, | ||
| ) | ||
| topic_config = NewTopic( | ||
| name=topic, | ||
| num_partitions=5, | ||
| replication_factor=1, | ||
| ) | ||
|
|
||
| client.create_topic(topic=topic_config) | ||
| for i in range(15): | ||
| message = f"Message #{i}" | ||
| client.produce_message(topic_name=topic, message_content=message) | ||
|
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| check_logs(model_full_name, kafka_unit_name, topic) | ||
|
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| def check_logs(model_full_name: str, kafka_unit_name: str, topic: str) -> None: | ||
| """Checks if messages for a topic have been produced. | ||
| Args: | ||
| model_full_name: the full name of the model | ||
| kafka_unit_name: the kafka unit to checks logs on | ||
| topic: the desired topic to check | ||
| """ | ||
| logs = check_output( | ||
| f"JUJU_MODEL={model_full_name} juju ssh {kafka_unit_name} sudo -i 'find {KafkaSnap.DATA_PATH}/data'", | ||
| stderr=PIPE, | ||
| shell=True, | ||
| universal_newlines=True, | ||
| ).splitlines() | ||
|
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| logger.debug(f"{logs=}") | ||
|
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| passed = False | ||
| for log in logs: | ||
| if topic and "index" in log: | ||
| passed = True | ||
| break | ||
|
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| assert passed, "logs not found" | ||
|
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|
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| def get_provider_data( | ||
| unit_name: str, model_full_name: str, endpoint: str = "kafka-client" | ||
| ) -> Dict[str, str]: | ||
| result = show_unit(unit_name=unit_name, model_full_name=model_full_name) | ||
| relations_info = result[unit_name]["relation-info"] | ||
| logger.info(f"Relation info: {relations_info}") | ||
| provider_relation_data = {} | ||
| for info in relations_info: | ||
| if info["endpoint"] == endpoint: | ||
| logger.info(f"Relation data: {info}") | ||
| provider_relation_data["username"] = info["application-data"]["username"] | ||
| provider_relation_data["password"] = info["application-data"]["password"] | ||
| provider_relation_data["endpoints"] = info["application-data"]["endpoints"] | ||
| provider_relation_data["zookeeper-uris"] = info["application-data"]["zookeeper-uris"] | ||
| provider_relation_data["tls"] = info["application-data"]["tls"] | ||
| if "consumer-group-prefix" in info["application-data"]: | ||
| provider_relation_data["consumer-group-prefix"] = info["application-data"][ | ||
| "consumer-group-prefix" | ||
| ] | ||
| provider_relation_data["topic"] = info["application-data"]["topic"] | ||
| return provider_relation_data | ||
|
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| def show_unit(unit_name: str, model_full_name: str) -> Any: | ||
| result = check_output( | ||
| f"JUJU_MODEL={model_full_name} juju show-unit {unit_name}", | ||
| stderr=PIPE, | ||
| shell=True, | ||
| universal_newlines=True, | ||
| ) | ||
|
|
||
| return yaml.safe_load(result) |
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