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Prepare How-To Guide documentation page for performing an OTA update …
…via the Update Manager (eclipse-kanto#264) [eclipse-kanto#244] Prepare How-To Guide for the Update Manager --------- Signed-off-by: Kristiyan Gostev <[email protected]> Signed-off-by: Dimitar Dimitrov <[email protected]> Co-authored-by: Dimitar Dimitrov <[email protected]>
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# Copyright (c) 2023 Contributors to the Eclipse Foundation | ||
# | ||
# See the NOTICE file(s) distributed with this work for additional | ||
# information regarding copyright ownership. | ||
# | ||
# This program and the accompanying materials are made available under the | ||
# terms of the Eclipse Public License 2.0 which is available at | ||
# https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 | ||
# which is available at https://www.apache.org/licenses/LICENSE-2.0. | ||
# | ||
# SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 | ||
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import getopt | ||
import json | ||
import os | ||
import signal | ||
import sys | ||
import threading | ||
import time | ||
import uuid | ||
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from string import Template | ||
from proton import Message | ||
from proton.handlers import MessagingHandler | ||
from proton.reactor import Container | ||
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alpine_container_template = """ | ||
{ | ||
"id": "alpine", | ||
"version": "latest", | ||
"config": [ | ||
{ | ||
"key": "image", | ||
"value": "docker.io/library/alpine:latest" | ||
}, | ||
{ | ||
"key": "restartPolicy", | ||
"value": "no" | ||
} | ||
] | ||
},""" | ||
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containers_desired_state = Template(""" | ||
{ | ||
"topic": "$namespace/$name/things/live/messages/apply", | ||
"headers": { | ||
"content-type": "application/json", | ||
"correlation-id": "$correlation_id", | ||
"response-required": true | ||
}, | ||
"path": "/features/UpdateManager/inbox/messages/apply", | ||
"value": { | ||
"activityId": "$activity_id", | ||
"desiredState": { | ||
"domains": [ | ||
{ | ||
"id": "containers", | ||
"config": [], | ||
"components": [ | ||
{ | ||
"id": "influxdb", | ||
"version": "2.7.1", | ||
"config": [ | ||
{ | ||
"key": "image", | ||
"value": "docker.io/library/influxdb:$influxdb_version" | ||
} | ||
] | ||
}, | ||
$alpine_container | ||
{ | ||
"id": "hello-world", | ||
"version": "latest", | ||
"config": [ | ||
{ | ||
"key": "image", | ||
"value": "docker.io/library/hello-world:latest" | ||
}, | ||
{ | ||
"key": "restartPolicy", | ||
"value": "no" | ||
} | ||
] | ||
} | ||
] | ||
} | ||
] | ||
} | ||
} | ||
} | ||
""") | ||
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containers_desired_state_clean_up = Template(""" | ||
{ | ||
"topic": "$namespace/$name/things/live/messages/apply", | ||
"headers": { | ||
"content-type": "application/json", | ||
"correlation-id": "$correlation_id", | ||
"response-required": true | ||
}, | ||
"path": "/features/UpdateManager/inbox/messages/apply", | ||
"value": { | ||
"activityId": "$activity_id", | ||
"desiredState": { | ||
"domains": [ | ||
{ | ||
"id": "containers", | ||
"config": [], | ||
"components": [] | ||
} | ||
] | ||
} | ||
} | ||
} | ||
""") | ||
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um_refresh_state = Template(""" | ||
{ | ||
"topic": "$namespace/$name/things/live/messages/apply", | ||
"headers": { | ||
"content-type": "application/json", | ||
"correlation-id": "$correlation_id", | ||
"response-required": true | ||
}, | ||
"path": "/features/UpdateManager/inbox/messages/refresh", | ||
"value": { | ||
"activityId": "$activity_id", | ||
} | ||
} | ||
""") | ||
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class CommandResponsesHandler(MessagingHandler): | ||
def __init__(self, server, address): | ||
super(CommandResponsesHandler, self).__init__() | ||
self.server = server | ||
self.address = address | ||
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def on_start(self, event): | ||
conn = event.container.connect(self.server, user="consumer@HONO", password="verysecret") | ||
event.container.create_receiver(conn, self.address) | ||
print('[connected]') | ||
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def on_message(self, event): | ||
print('[got response]') | ||
response = json.loads(event.message.body) | ||
print(json.dumps(response, indent=2)) | ||
if response["status"] == 204: | ||
print('[ok]', "um") | ||
else: | ||
print('[error]') | ||
event.receiver.close() | ||
event.connection.close() | ||
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def on_connection_closed(self, event): | ||
print('[connection closed]') | ||
os.kill(os.getpid(), signal.SIGINT) | ||
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class CommandsInvoker(MessagingHandler): | ||
def __init__(self, server, address): | ||
super(CommandsInvoker, self).__init__() | ||
self.server = server | ||
self.address = address | ||
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def on_start(self, event): | ||
conn = event.container.connect(self.server, sasl_enabled=True, allowed_mechs="PLAIN", allow_insecure_mechs=True, | ||
user="consumer@HONO", password="verysecret") | ||
event.container.create_sender(conn, self.address) | ||
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def on_sendable(self, event): | ||
print('[sending command]') | ||
correlation_id = str(uuid.uuid4()) | ||
namespaced_id = device_id.split(':', 1) | ||
activity_id = str(uuid.uuid4()) | ||
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influxdb_version = "1.8.4" | ||
alpine_container = alpine_container_template | ||
if operation == "update": | ||
influxdb_version = "1.8.5" | ||
alpine_container = "" | ||
if operation == "clean": | ||
payload = containers_desired_state_clean_up.substitute(namespace=namespaced_id[0], | ||
name=namespaced_id[1], | ||
correlation_id=correlation_id, | ||
activity_id=activity_id) | ||
else: | ||
payload = containers_desired_state.substitute(namespace=namespaced_id[0], name=namespaced_id[1], | ||
correlation_id=correlation_id, | ||
influxdb_version=influxdb_version, | ||
alpine_container=alpine_container, | ||
activity_id=activity_id) | ||
print(json.dumps(json.loads(payload), indent=2)) | ||
msg = Message(body=payload, address='{}/{}'.format(address, device_id), | ||
content_type="application/json", | ||
subject="um", reply_to=reply_to_address, correlation_id=correlation_id, id=str(uuid.uuid4())) | ||
event.sender.send(msg) | ||
event.sender.close() | ||
event.connection.close() | ||
print('[sent]') | ||
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# Parse command line args | ||
options, reminder = getopt.getopt(sys.argv[1:], 't:d:o:') | ||
opts_dict = dict(options) | ||
tenant_id = os.environ.get("TENANT") or opts_dict['-t'] | ||
device_id = os.environ.get("DEVICE_ID") or opts_dict['-d'] | ||
operation = opts_dict['-o'] | ||
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# AMQP global configurations | ||
uri = 'amqps://hono.eclipseprojects.io:15671' | ||
address = 'command/{}'.format(tenant_id) | ||
reply_to_address = 'command_response/{}/replies'.format(tenant_id) | ||
print('[starting] demo update manager app for tenant [{}], device [{}] at [{}]'.format(tenant_id, device_id, uri)) | ||
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# Create command invoker and handler | ||
response_handler = Container(CommandResponsesHandler(uri, reply_to_address)) | ||
commands_invoker = Container(CommandsInvoker(uri, address)) | ||
thread = threading.Thread(target=lambda: response_handler.run(), daemon=True) | ||
thread.start() | ||
# Give it some time to link | ||
time.sleep(2) | ||
# Send the command | ||
commands_invoker.run() | ||
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def handler(signum, frame): | ||
print('[stopping] demo update manager app for tenant [{}], device [{}] at [{}]'.format(tenant_id, device_id, uri)) | ||
response_handler.stop() | ||
thread.join(timeout=5) | ||
print('[stopped]') | ||
exit(0) | ||
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signal.signal(signal.SIGINT, handler) | ||
while True: | ||
pass |
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