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- Add SharedStorageMonitor thread to periodically verify shared storage:
* Writes a temp file to the shared location and validates MD5 from all nodes.
* Skips nodes with unstable recent heartbeats; retries once; defers decision if any node is unreachable.
* Updates a cluster-wide stateful flag (shared_storage_on) only on conclusive checks.
- New CMAPI endpoints:
* PUT /cmapi/{ver}/cluster/check-shared-storage — orchestrates cross-node checks.
* GET /cmapi/{ver}/node/check-shared-file — validates a given file’s MD5 on a node.
* PUT /cmapi/{ver}/node/stateful-config — fast path to distribute stateful config updates.
- Introduce in-memory stateful config (AppStatefulConfig) with versioned flags (term/seq) and shared_storage_on flag:
* Broadcast via helpers.broadcast_stateful_config and enhanced broadcast_new_config.
* Config PUT is now validated with Pydantic models; supports stateful-only updates and set_mode requests.
- Failover behavior:
* NodeMonitor keeps failover inactive when shared_storage_on is false or cluster size < 3.
* Rebalancing DBRoots becomes a no-op when shared storage is OFF (safety guard).
- mcl status improvements: per-node 'state' (online/offline), better timeouts and error reporting.
- Routing/wiring: add dispatcher routes for new endpoints; add ClusterModeEnum.
- Tests: cover shared-storage monitor (unreachable nodes, HB-based skipping), node manipulation with shared storage ON/OFF, and server/config flows.
- Dependencies: add pydantic; minor cleanups and logging.
46 lines
1.2 KiB
Python
46 lines
1.2 KiB
Python
import unittest
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import requests
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import configparser
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from pathlib import Path
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from datetime import datetime
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from cmapi_server.constants import _version
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config_filename = './cmapi_server/cmapi_server.conf'
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url = f"https://localhost:8640/cmapi/{_version}/node/config"
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begin_url = f"https://localhost:8640/cmapi/{_version}/node/begin"
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config_path = './cmapi_server/test/Columnstore_apply_config.xml'
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# create tmp dir
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tmp_prefix = '/tmp/mcs_config_test'
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tmp_path = Path(tmp_prefix)
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tmp_path.mkdir(parents = True, exist_ok = True)
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copyfile(config_path_old, tmp_prefix + '/Columnstore.xml')
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def get_current_key():
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app_config = configparser.ConfigParser()
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try:
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with open(config_filename, 'r') as _config_file:
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app_config.read_file(_config_file)
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except FileNotFoundError:
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return ''
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if 'Authentication' not in app_config.sections():
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return ''
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return app_config['Authentication'].get('x-api-key', '')
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headers = {'x-api-key': get_current_key()}
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body = {'id': 42, 'timeout': 120}
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r = requests.put(begin_url, verify=False, headers=headers, json=body)
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config_file = Path(config_path)
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config = config_file.read_text()
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body = {
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'revision': '42',
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'manager': '1.1.1.1',
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'timeout': 0,
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'config': config,
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}
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