def verify(config):
"""Verify the configuration contain the necessary details."""
errors = []
if 'build' in config:
for error in verify_build(config['build']):
errors.append(error)
else:
utils.debug('No "build" section found in configuration.')
for error in verify_package(config):
errors.append(error)
for section in {'build', 'package'}:
for local_path, container_path in config.get(section, dict()).get('volumes', dict()).items():
if not path.exists(local_path) and not create_local_directory(local_path):
errors.append('The path "{}" specified as a {} volume does not exist on the local machine.'.format(local_path, section))
if not path.isabs(container_path):
errors.append('The path "{}" specified as a {} volume has to be absolute.'.format(container_path, section))
if 'environment' in config and not isinstance(config['environment'], dict):
errors.append('The environment variables should be described as a dictionary.')
if errors:
utils.log('The following errors were encountered while verifying the configuration:', err=True, fg='red', bold=True)
for error in errors:
utils.log(' - {}'.format(error), err=True, prefix=False)
return False
else:
utils.info('The configuration has been verified without errors.')
return True
def create_build_script(script):
"""Write the build script to a temporary file."""
utils.debug('Writing build script to temporary file.')
with NamedTemporaryFile(prefix='berth-build-', suffix='.sh', delete=False, dir='.') as script_file:
script_file.write(script.encode('utf-8'))
script_path = script_file.name
chmod(script_path, 493) # Add execute permissions: 493 = rwxr-xr-x
utils.info('Wrote temporary build script to "{}".'.format(script_path))
return script_path
def create_local_directory(local_path):
"""Create a local directory for a specified path that doesn't exist."""
try:
utils.debug('Creating a directory at the local path "{}".'.format(local_path))
mkdir(local_path)
utils.info('Created directory at "{}" as the path did not exist.'.format(local_path))
return True
except PermissionError:
return False
def create_build_script(script):
"""Write the build script to a temporary file."""
utils.debug('Writing build script to temporary file.')
with NamedTemporaryFile(prefix='berth-build-', suffix='.sh', delete=False, dir='.') as script_file:
script_file.write(script.encode('utf-8'))
script_path = script_file.name
chmod(script_path, 493) # Add execute permissions: 493 = rwxr-xr-x
utils.info('Wrote temporary build script to "{}".'.format(script_path))
return script_path
def build(config):
"""Run the build part of the configuration."""
utils.log('Building project.')
script_path = create_build_script(config['build']['script'])
script_container_path = '/{}'.format(path.basename(script_path))
volumes = config['build'].get('volumes', dict())
volumes[script_path] = script_container_path
binds = utils.convert_volumes_list(volumes)
docker = utils.docker_client()
container = docker.create_container(
image=config['build']['image'],
command=[script_container_path],
environment={str(k): str(v) for k, v in config.get('environment', dict()).items()},
host_config=docker.create_host_config(binds=binds)
)
if container['Warnings']:
utils.log('We got a warning when creating the build container:', err=True, fg='red', bold=True)
utils.log(str(container['Warnings']), err=True, prefix=False)
remove_build_script(script_path)
return False
utils.debug('Starting build container.')
start_time = time.time()
docker.start(container['Id'])
utils.info('Build container started.')
if utils.get_log_level() > 0:
for line in docker.logs(container['Id'], stream=True):
utils.log(line.decode('utf-8').rstrip(), prefix=False)
exit_code = docker.wait(container['Id'])
utils.info('The build container has stopped after {:.1f} seconds.'.format(time.time() - start_time))
if exit_code == 0:
utils.log('Build succeeded.')
else:
if utils.get_log_level() > 0:
utils.log('Build script failed with exit code: {}.'.format(exit_code), err=True, fg='red', bold=True)
else:
utils.log('Build script failed with exit code: {}. Output follows:'.format(exit_code), err=True, fg='red', bold=True)
utils.log(docker.logs(container['Id']).decode('utf-8').rstrip(), err=True, prefix=False)
if config['keep_containers']:
utils.info('Keeping build container (ID: {}).'.format(container['Id'][:12]))
else:
utils.debug('Removing build container.')
docker.remove_container(container['Id'])
utils.info('Removed build container.')
remove_build_script(script_path)
return exit_code == 0
def build(config):
"""Run the build part of the configuration."""
utils.log('Building project.')
script_path = create_build_script(config['build']['script'])
script_container_path = '/{}'.format(path.basename(script_path))
volumes = config['build'].get('volumes', dict())
volumes[script_path] = script_container_path
volume_list, binds = utils.convert_volumes_list(volumes)
docker = utils.docker_client()
container = docker.create_container(
image=config['build']['image'],
command=[script_container_path],
volumes=volume_list,
environment={str(k): str(v) for k, v in config.get('environment', dict()).items()},
)
if container['Warnings']:
utils.log('We got a warning when creating the build container:', err=True, fg='red', bold=True)
utils.log(str(container['Warnings']), err=True, prefix=False)
remove_build_script(script_path)
return False
utils.debug('Starting build container.')
start_time = time.time()
docker.start(container['Id'], binds=binds)
utils.info('Build container started.')
if utils.get_log_level() > 0:
for line in docker.logs(container['Id'], stream=True):
utils.log(line.decode('utf-8').rstrip(), prefix=False)
exit_code = docker.wait(container['Id'])
utils.info('The build container has stopped after {:.1f} seconds.'.format(time.time() - start_time))
if exit_code == 0:
utils.log('Build succeeded.')
else:
if utils.get_log_level() > 0:
utils.log('Build script failed with exit code: {}.'.format(exit_code), err=True, fg='red', bold=True)
else:
utils.log('Build script failed with exit code: {}. Output follows:'.format(exit_code), err=True, fg='red', bold=True)
utils.log(docker.logs(container['Id']).decode('utf-8').rstrip(), err=True, prefix=False)
if config['keep_containers']:
utils.info('Keeping build container (ID: {}).'.format(container['Id'][:12]))
else:
utils.debug('Removing build container.')
docker.remove_container(container['Id'])
utils.info('Removed build container.')
remove_build_script(script_path)
return exit_code == 0
def create_local_directory(local_path):
"""Create a local directory for a specified path that doesn't exist."""
try:
utils.debug(
'Creating a directory at the local path "{}".'.format(local_path))
mkdir(local_path)
utils.info(
'Created directory at "{}" as the path did not exist.'.format(
local_path))
return True
except PermissionError:
return False
def replace_envvars(config, lines):
"""Replace environment variables in FPM command parameters."""
environment_variables = config.get('environment', dict())
if not environment_variables:
utils.debug('No environment variables has been specified for the packaging. No replacements are being performed.')
for line in lines:
yield line
else:
utils.debug('The following environment variables has been provided: {}'.format(str(environment_variables)))
os.environ.update({str(k): str(v) for k, v in environment_variables.items()})
for line in lines:
yield os.path.expandvars(line)
def read(file_pointer):
"""Read the configuration file and parse the YAML contents."""
utils.debug('Reading the configuration file.')
try:
config = yaml.load(file_pointer.read())
except yaml.parser.ParserError as error:
utils.log('The configuration file could not be parsed:', err=True, fg='red', bold=True)
utils.log(error.context, err=True, prefix=False)
utils.log(str(error.context_mark), err=True, prefix=False)
utils.log(error.problem, err=True, prefix=False)
utils.log(str(error.problem_mark), err=True, prefix=False)
return False
utils.info('The configuration file "{}" has been parsed.'.format(file_pointer.name))
utils.debug('Parsed configuration:\n{}'.format(config))
return config
def verify(config):
"""Verify the configuration contain the necessary details."""
errors = []
if 'build' in config:
for error in verify_build(config['build']):
errors.append(error)
else:
utils.debug('No "build" section found in configuration.')
for error in verify_package(config):
errors.append(error)
for section in {'build', 'package'}:
for local_path, container_path in config.get(section, dict()).get(
'volumes', dict()).items():
if not path.exists(local_path) and not create_local_directory(
local_path):
errors.append(
'The path "{}" specified as a {} volume does not exist on the local machine.'
.format(local_path, section))
if not path.isabs(container_path):
errors.append(
'The path "{}" specified as a {} volume has to be absolute.'
.format(container_path, section))
if 'environment' in config and not isinstance(config['environment'], dict):
errors.append(
'The environment variables should be described as a dictionary.')
if errors:
utils.log(
'The following errors were encountered while verifying the configuration:',
err=True,
fg='red',
bold=True)
for error in errors:
utils.log(' - {}'.format(error), err=True, prefix=False)
return False
else:
utils.info('The configuration has been verified without errors.')
return True
def read(file_pointer):
"""Read the configuration file and parse the YAML contents."""
utils.debug('Reading the configuration file.')
try:
config = yaml.load(file_pointer.read())
except yaml.parser.ParserError as error:
utils.log('The configuration file could not be parsed:',
err=True,
fg='red',
bold=True)
utils.log(error.context, err=True, prefix=False)
utils.log(str(error.context_mark), err=True, prefix=False)
utils.log(error.problem, err=True, prefix=False)
utils.log(str(error.problem_mark), err=True, prefix=False)
return False
utils.info('The configuration file "{}" has been parsed.'.format(
file_pointer.name))
utils.debug('Parsed configuration:\n{}'.format(config))
return config
def replace_envvars(config, lines):
"""Replace environment variables in FPM command parameters."""
environment_variables = config.get('environment', dict())
if not environment_variables:
utils.debug(
'No environment variables has been specified for the packaging. No replacements are being performed.'
)
for line in lines:
yield line
else:
utils.debug(
'The following environment variables has been provided: {}'.format(
str(environment_variables)))
os.environ.update(
{str(k): str(v)
for k, v in environment_variables.items()})
for line in lines:
yield os.path.expandvars(line)
def package(config):
"""Package a project of some kind to a package of some kind."""
utils.log('Packaging project.')
volumes = config['package'].get('volumes', dict())
volume_list, binds = utils.convert_volumes_list(volumes)
command = list(replace_envvars(config, map_to_fpm(config['package']['fpm'])))
utils.debug('Command to be run in packaging container is: {}'.format(str(command)))
docker = utils.docker_client()
container = docker.create_container(
image=config['package'].get('image', 'tenzer/fpm'),
command=command,
volumes=volume_list,
)
if container['Warnings']:
utils.log('We got a warning when creating the packaging container:', err=True, fg='red', bold=True)
utils.log(str(container['Warnings']), err=True, prefix=False)
return False
utils.debug('Starting packaging container.')
start_time = time.time()
docker.start(container['Id'], binds=binds)
utils.info('Packaging container started.')
if utils.get_log_level() > 0:
for line in docker.logs(container['Id'], stream=True):
utils.log(line.decode('utf-8').rstrip(), prefix=False)
exit_code = docker.wait(container['Id'])
utils.info('The packaging container has stopped after {:.1f} seconds.'.format(time.time() - start_time))
if exit_code == 0:
utils.log('Packaging succeeded.')
else:
if utils.get_log_level() > 0:
utils.log('Packaging command failed with exit code: {}.'.format(exit_code), err=True, fg='red', bold=True)
else:
utils.log('Packaging command failed with exit code: {}. Output follows:'.format(exit_code), err=True, fg='red', bold=True)
utils.log(docker.logs(container['Id']).decode('utf-8').rstrip(), err=True, prefix=False)
if config['keep_containers']:
utils.info('Keeping packaging container (ID: {}).'.format(container['Id'][:12]))
else:
utils.debug('Removing packaging container.')
docker.remove_container(container['Id'])
utils.info('Removed packaging container.')
return exit_code == 0
def package(config):
"""Package a project of some kind to a package of some kind."""
utils.log('Packaging project.')
volumes = config['package'].get('volumes', dict())
binds = utils.convert_volumes_list(volumes)
command = list(
replace_envvars(config, map_to_fpm(config['package']['fpm'])))
utils.debug('Command to be run in packaging container is: {}'.format(
str(command)))
docker = utils.docker_client()
container = docker.create_container(
image=config['package'].get('image', 'tenzer/fpm'),
command=command,
host_config=docker.create_host_config(binds=binds))
if container['Warnings']:
utils.log('We got a warning when creating the packaging container:',
err=True,
fg='red',
bold=True)
utils.log(str(container['Warnings']), err=True, prefix=False)
return False
utils.debug('Starting packaging container.')
start_time = time.time()
docker.start(container['Id'])
utils.info('Packaging container started.')
if utils.get_log_level() > 0:
for line in docker.logs(container['Id'], stream=True):
utils.log(line.decode('utf-8').rstrip(), prefix=False)
exit_code = docker.wait(container['Id'])
utils.info(
'The packaging container has stopped after {:.1f} seconds.'.format(
time.time() - start_time))
if exit_code == 0:
utils.log('Packaging succeeded.')
else:
if utils.get_log_level() > 0:
utils.log('Packaging command failed with exit code: {}.'.format(
exit_code),
err=True,
fg='red',
bold=True)
else:
utils.log(
'Packaging command failed with exit code: {}. Output follows:'.
format(exit_code),
err=True,
fg='red',
bold=True)
utils.log(docker.logs(container['Id']).decode('utf-8').rstrip(),
err=True,
prefix=False)
if config['keep_containers']:
utils.info('Keeping packaging container (ID: {}).'.format(
container['Id'][:12]))
else:
utils.debug('Removing packaging container.')
docker.remove_container(container['Id'])
utils.info('Removed packaging container.')
return exit_code == 0
def remove_build_script(script_path):
"""Remove the temporary build script file."""
utils.debug('Removing temporary build script at "{}".'.format(script_path))
unlink(script_path)
utils.info('Removed temporary build script.')
def remove_build_script(script_path):
"""Remove the temporary build script file."""
utils.debug('Removing temporary build script at "{}".'.format(script_path))
unlink(script_path)
utils.info('Removed temporary build script.')