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Source code for galaxy.jobs.command_factory

from logging import getLogger
from os import getcwd
from os.path import (
    abspath,
    join
)

from galaxy import util
from galaxy.jobs.runners.util.job_script import (
    check_script_integrity,
    INTEGRITY_INJECTION,
    write_script,
)

log = getLogger(__name__)

CAPTURE_RETURN_CODE = "return_code=$?"
YIELD_CAPTURED_CODE = 'sh -c "exit $return_code"'
SETUP_GALAXY_FOR_METADATA = """
[ "$GALAXY_VIRTUAL_ENV" = "None" ] && GALAXY_VIRTUAL_ENV="$_GALAXY_VIRTUAL_ENV"; _galaxy_setup_environment True
"""


[docs]def build_command( runner, job_wrapper, container=None, modify_command_for_container=True, include_metadata=False, include_work_dir_outputs=True, create_tool_working_directory=True, remote_command_params={}, metadata_directory=None, ): """ Compose the sequence of commands necessary to execute a job. This will currently include: - environment settings corresponding to any requirement tags - preparing input files - command line taken from job wrapper - commands to set metadata (if include_metadata is True) """ shell = job_wrapper.shell base_command_line = job_wrapper.get_command_line() # job_id = job_wrapper.job_id # log.debug( 'Tool evaluation for job (%s) produced command-line: %s' % ( job_id, base_command_line ) ) if not base_command_line: raise Exception("Attempting to run a tool with empty command definition.") commands_builder = CommandsBuilder(base_command_line) # All job runners currently handle this case which should never occur if not commands_builder.commands: return None # Version, dependency resolution, and task splitting are prepended to the # command - so they need to appear in the following order to ensure that # the underlying application used by version command is available in the # environment after dependency resolution, but the task splitting command # is still executed in Galaxy's Python environment. __handle_version_command(commands_builder, job_wrapper) # One could imagine also allowing dependencies inside of the container but # that is too sophisticated for a first crack at this - build your # containers ready to go! if not container or container.resolve_dependencies: __handle_dependency_resolution(commands_builder, job_wrapper, remote_command_params) __handle_task_splitting(commands_builder, job_wrapper) if (container and modify_command_for_container) or job_wrapper.commands_in_new_shell: if container and modify_command_for_container: # Many Docker containers do not have /bin/bash. external_command_shell = container.shell else: external_command_shell = shell externalized_commands = __externalize_commands(job_wrapper, external_command_shell, commands_builder, remote_command_params) if container and modify_command_for_container: # Stop now and build command before handling metadata and copying # working directory files back. These should always happen outside # of docker container - no security implications when generating # metadata and means no need for Galaxy to be available to container # and not copying workdir outputs back means on can be more restrictive # of where container can write to in some circumstances. run_in_container_command = container.containerize_command( externalized_commands ) commands_builder = CommandsBuilder(run_in_container_command) else: commands_builder = CommandsBuilder(externalized_commands) # Don't need to create a separate tool working directory for Pulsar # jobs - that is handled by Pulsar. if create_tool_working_directory: # usually working will already exist, but it will not for task # split jobs. # Remove the working directory incase this is for instance a SLURM re-submission. # xref https://github.com/galaxyproject/galaxy/issues/3289 commands_builder.prepend_command("rm -rf working; mkdir -p working; cd working") if include_work_dir_outputs: __handle_work_dir_outputs(commands_builder, job_wrapper, runner, remote_command_params) commands_builder.capture_return_code() if include_metadata and job_wrapper.requires_setting_metadata: metadata_directory = metadata_directory or job_wrapper.working_directory commands_builder.append_command("cd '%s'" % metadata_directory) __handle_metadata(commands_builder, job_wrapper, runner, remote_command_params) return commands_builder.build()
def __externalize_commands(job_wrapper, shell, commands_builder, remote_command_params, script_name="tool_script.sh"): local_container_script = join(job_wrapper.working_directory, script_name) tool_commands = commands_builder.build() config = job_wrapper.app.config integrity_injection = "" # Setting shell to none in job_conf.xml disables creating a tool command script, # set -e doesn't work for composite commands but this is necessary for Windows jobs # for instance. if shell and shell.lower() == 'none': return tool_commands if check_script_integrity(config): integrity_injection = INTEGRITY_INJECTION set_e = "" if job_wrapper.strict_shell: set_e = "set -e\n" script_contents = u"#!%s\n%s%s%s" % ( shell, integrity_injection, set_e, tool_commands ) write_script(local_container_script, script_contents, config) commands = local_container_script if 'working_directory' in remote_command_params: commands = "%s %s" % (shell, join(remote_command_params['working_directory'], script_name)) log.info("Built script [%s] for tool command [%s]" % (local_container_script, tool_commands)) return commands def __handle_version_command(commands_builder, job_wrapper): # Prepend version string write_version_cmd = job_wrapper.write_version_cmd if write_version_cmd: commands_builder.prepend_command(write_version_cmd) def __handle_task_splitting(commands_builder, job_wrapper): # prepend getting input files (if defined) if getattr(job_wrapper, 'prepare_input_files_cmds', None): commands_builder.prepend_commands(job_wrapper.prepare_input_files_cmds) def __handle_dependency_resolution(commands_builder, job_wrapper, remote_command_params): local_dependency_resolution = remote_command_params.get("dependency_resolution", "local") == "local" # Prepend dependency injection if local_dependency_resolution and job_wrapper.dependency_shell_commands: commands_builder.prepend_commands(job_wrapper.dependency_shell_commands) def __handle_work_dir_outputs(commands_builder, job_wrapper, runner, remote_command_params): # Append commands to copy job outputs based on from_work_dir attribute. work_dir_outputs_kwds = {} if 'working_directory' in remote_command_params: work_dir_outputs_kwds['job_working_directory'] = remote_command_params['working_directory'] work_dir_outputs = runner.get_work_dir_outputs(job_wrapper, **work_dir_outputs_kwds) if work_dir_outputs: commands_builder.capture_return_code() copy_commands = map(__copy_if_exists_command, work_dir_outputs) commands_builder.append_commands(copy_commands) def __handle_metadata(commands_builder, job_wrapper, runner, remote_command_params): # Append metadata setting commands, we don't want to overwrite metadata # that was copied over in init_meta(), as per established behavior metadata_kwds = remote_command_params.get('metadata_kwds', {}) exec_dir = metadata_kwds.get('exec_dir', abspath(getcwd())) tmp_dir = metadata_kwds.get('tmp_dir', job_wrapper.working_directory) dataset_files_path = metadata_kwds.get('dataset_files_path', runner.app.model.Dataset.file_path) output_fnames = metadata_kwds.get('output_fnames', job_wrapper.get_output_fnames()) config_root = metadata_kwds.get('config_root', None) config_file = metadata_kwds.get('config_file', None) datatypes_config = metadata_kwds.get('datatypes_config', None) compute_tmp_dir = metadata_kwds.get('compute_tmp_dir', None) resolve_metadata_dependencies = job_wrapper.commands_in_new_shell metadata_command = job_wrapper.setup_external_metadata( exec_dir=exec_dir, tmp_dir=tmp_dir, dataset_files_path=dataset_files_path, output_fnames=output_fnames, set_extension=False, config_root=config_root, config_file=config_file, datatypes_config=datatypes_config, compute_tmp_dir=compute_tmp_dir, resolve_metadata_dependencies=resolve_metadata_dependencies, kwds={'overwrite': False} ) or '' metadata_command = metadata_command.strip() if metadata_command: # Place Galaxy and its dependencies in environment for metadata regardless of tool. metadata_command = "%s%s" % (SETUP_GALAXY_FOR_METADATA, metadata_command) commands_builder.capture_return_code() commands_builder.append_command(metadata_command) def __copy_if_exists_command(work_dir_output): source_file, destination = work_dir_output return "if [ -f %s ] ; then cp %s %s ; fi" % (source_file, source_file, destination) class CommandsBuilder(object): def __init__(self, initial_command=u''): # Remove trailing semi-colon so we can start hacking up this command. # TODO: Refactor to compose a list and join with ';', would be more clean. initial_command = util.unicodify(initial_command) commands = initial_command.rstrip(u"; ") self.commands = commands # Coping work dir outputs or setting metadata will mask return code of # tool command. If these are used capture the return code and ensure # the last thing that happens is an exit with return code. self.return_code_captured = False def prepend_command(self, command): if command: self.commands = u"%s; %s" % (command, self.commands) return self def prepend_commands(self, commands): return self.prepend_command(u"; ".join(c for c in commands if c)) def append_command(self, command): if command: self.commands = u"%s; %s" % (self.commands, command) return self def append_commands(self, commands): self.append_command(u"; ".join(c for c in commands if c)) def capture_return_code(self): if not self.return_code_captured: self.return_code_captured = True self.append_command(CAPTURE_RETURN_CODE) def build(self): if self.return_code_captured: self.append_command(YIELD_CAPTURED_CODE) return self.commands __all__ = ("build_command", )