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run_create_lambda_sns.py
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run_create_lambda_sns.py
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#!/usr/bin/env python3
import os
import re
import subprocess
import time
from env import env
from run_common import AWSCli
from run_common import print_message
from run_common import print_session
from run_common import re_sub_lines
from run_common import read_file
from run_common import write_file
from run_create_lambda_iam import create_iam_for_lambda
def run_create_lambda_sns(function_name, settings, options):
aws_cli = AWSCli(settings['AWS_REGION'])
description = settings['DESCRIPTION']
folder_name = settings.get('FOLDER_NAME', function_name)
git_url = settings['GIT_URL']
phase = env['common']['PHASE']
mm = re.match(r'^.+/(.+)\.git$', git_url)
if not mm:
raise Exception()
git_folder_name = mm.group(1)
################################################################################
print_session('create %s' % function_name)
################################################################################
print_message('download template: %s' % git_folder_name)
subprocess.Popen(['mkdir', '-p', './template']).communicate()
if not os.path.exists('template/%s' % git_folder_name):
branch = options.get('branch', 'master' if phase == 'dv' else phase)
print(f'branch: {branch}')
git_command = ['git', 'clone', '--depth=1', '-b', branch, git_url]
subprocess.Popen(git_command, cwd='template').communicate()
if not os.path.exists('template/%s' % git_folder_name):
raise Exception()
deploy_folder = 'template/%s/lambda/%s' % (git_folder_name, folder_name)
################################################################################
print_message(f'create iam: {function_name}')
role_created = create_iam_for_lambda(git_folder_name, folder_name, function_name)
if role_created:
print_message('wait 10 seconds to let iam role and policy propagated to all regions...')
time.sleep(10)
################################################################################
topic_arn_list = list()
for sns_topic_name in settings['SNS_TOPICS_NAMES']:
print_message('check topic exists: %s' % sns_topic_name)
region, topic_name = sns_topic_name.split('/')
topic_arn = AWSCli(region).get_topic_arn(topic_name)
if not topic_arn:
print('sns topic: "%s" is not exists in %s' % (sns_topic_name, region))
raise Exception()
topic_arn_list.append(topic_arn)
################################################################################
print_message('packaging lambda: %s' % function_name)
print_message('cleanup generated files')
subprocess.Popen(['git', 'clean', '-d', '-f', '-x'], cwd=deploy_folder).communicate()
requirements_path = '%s/requirements.txt' % deploy_folder
if os.path.exists(requirements_path):
print_message('install dependencies')
cmd = ['pip3', 'install', '-r', requirements_path, '-t', deploy_folder]
subprocess.Popen(cmd).communicate()
settings_path = '%s/settings_local_sample.py' % deploy_folder
if os.path.exists(settings_path):
print_message('create environment values')
lines = read_file(settings_path)
option_list = list()
option_list.append(['PHASE', phase])
for key in settings:
value = settings[key]
option_list.append([key, value])
for oo in option_list:
lines = re_sub_lines(lines, '^(%s) .*' % oo[0], '\\1 = \'%s\'' % oo[1])
write_file('%s/settings_local.py' % deploy_folder, lines)
print_message('zip files')
cmd = ['zip', '-r', 'deploy.zip', '.']
subprocess.Popen(cmd, cwd=deploy_folder).communicate()
print_message('create lambda function')
replaced_function_name = function_name.replace('_', '-')
role_arn = aws_cli.get_role_arn(f'lambda-{replaced_function_name}-role')
git_hash_johanna = subprocess.Popen(['git', 'rev-parse', 'HEAD'], stdout=subprocess.PIPE).communicate()[0]
git_hash_template = subprocess.Popen(['git', 'rev-parse', 'HEAD'],
stdout=subprocess.PIPE,
cwd='template/%s' % git_folder_name).communicate()[0]
tags = list()
# noinspection PyUnresolvedReferences
tags.append('git_hash_johanna=%s' % git_hash_johanna.decode('utf-8').strip())
# noinspection PyUnresolvedReferences
tags.append('git_hash_%s=%s' % (git_folder_name, git_hash_template.decode('utf-8').strip()))
################################################################################
print_message('check previous version')
need_update = False
cmd = ['lambda', 'list-functions']
result = aws_cli.run(cmd)
for ff in result['Functions']:
if function_name == ff['FunctionName']:
need_update = True
break
################################################################################
if need_update:
print_session('update lambda: %s' % function_name)
cmd = ['lambda', 'update-function-code',
'--function-name', function_name,
'--zip-file', 'fileb://deploy.zip']
result = aws_cli.run(cmd, cwd=deploy_folder)
print_message('wait few seconds until function is updated')
time.sleep(10)
function_arn = result['FunctionArn']
cmd = ['lambda', 'update-function-configuration',
'--function-name', function_name,
'--description', description,
'--role', role_arn,
'--handler', 'lambda.handler',
'--runtime', 'python3.8',
'--timeout', '120']
if settings.get('MEMORY_SIZE'):
cmd += ['--memory-size', settings['MEMORY_SIZE']]
aws_cli.run(cmd, cwd=deploy_folder)
print_message('update lambda tags')
cmd = ['lambda', 'tag-resource',
'--resource', function_arn,
'--tags', ','.join(tags)]
aws_cli.run(cmd, cwd=deploy_folder)
return
################################################################################
print_session('create lambda: %s' % function_name)
cmd = [
'lambda', 'create-function',
'--function-name', function_name,
'--description', description,
'--zip-file', 'fileb://deploy.zip',
'--role', role_arn,
'--handler', 'lambda.handler',
'--runtime', 'python3.8',
'--tags', ','.join(tags),
'--timeout', '120',
'--architectures', 'arm64',
]
if settings.get('MEMORY_SIZE'):
cmd += ['--memory-size', settings['MEMORY_SIZE']]
result = aws_cli.run(cmd, cwd=deploy_folder)
function_arn = result['FunctionArn']
for topic_arn in topic_arn_list:
print_message('create subscription')
topic_region = topic_arn.split(':')[3]
cmd = ['sns', 'subscribe',
'--topic-arn', topic_arn,
'--protocol', 'lambda',
'--notification-endpoint', function_arn]
AWSCli(topic_region).run(cmd)
print_message('Add permission to lambda')
statement_id = '%s_%s_Permission' % (function_name, topic_region)
cmd = ['lambda', 'add-permission',
'--function-name', function_name,
'--statement-id', statement_id,
'--action', 'lambda:InvokeFunction',
'--principal', 'sns.amazonaws.com',
'--source-arn', topic_arn]
aws_cli.run(cmd)
print_message('update tag with subscription info')
cmd = ['lambda', 'tag-resource',
'--resource', function_arn,
'--tags', ','.join(tags)]
aws_cli.run(cmd, cwd=deploy_folder)