aiida.cmdline.utils package

Submodules

Utility functions to draw ASCII diagrams to the command line.

aiida.cmdline.utils.ascii_vis.draw_children(node, node_label=None, show_pk=True, dist=2, follow_links_of_type=None)[source]

Print an ASCII tree of the parents of the given node.

Parameters:
  • node (aiida.orm.nodes.data.Data) – The node to draw for
  • node_label (str) – The label to use for the nodes
  • show_pk (bool) – Show the PK of nodes alongside the label
  • dist (int) – The number of steps away from this node to branch out
  • follow_links_of_type (str) – Follow links of this type when making steps, if None then it will follow CREATE and INPUT links
aiida.cmdline.utils.ascii_vis.draw_parents(node, node_label=None, show_pk=True, dist=2, follow_links_of_type=None)[source]

Print an ASCII tree of the parents of the given node.

Parameters:
  • node (aiida.orm.nodes.data.Data) – The node to draw for
  • node_label (str) – The label to use for the nodes
  • show_pk (bool) – Show the PK of nodes alongside the label
  • dist (int) – The number of steps away from this node to branch out
  • follow_links_of_type (str) – Follow links of this type when making steps, if None then it will follow CREATE and INPUT links
aiida.cmdline.utils.ascii_vis.format_call_graph(calc_node, info_fn=<function calc_info>)[source]

Print a tree like the POSIX tree command for the calculation call graph

Parameters:
  • calc_node – The calculation node
  • info_fn – An optional function that takes the node and returns a string of information to be displayed for each node.

Common utility functions for command line commands.

aiida.cmdline.utils.common.check_worker_load(active_slots)[source]

Check if the percentage usage of the daemon worker slots exceeds a threshold. If it does, print a warning.

The purpose of this check is to warn the user if they are close to running out of worker slots which could lead to their processes becoming stuck indefinitely.

Parameters:active_slots – the number of currently active worker slots

Given a flat list of LinkTriples, return a flat string representation.

Parameters:
  • links – a list of LinkTriples
  • headers – headers to use
Returns:

formatted string

aiida.cmdline.utils.common.format_local_time(timestamp, format_str='%Y-%m-%d %H:%M:%S')[source]

Format a datetime object or UNIX timestamp in a human readable format

Parameters:
  • timestamp – a datetime object or a float representing a UNIX timestamp
  • format_str – optional string format to pass to strftime

Given a nested dictionary of nodes, return a nested string representation.

Parameters:
  • links – a nested dictionary of nodes
  • headers – headers to use
Returns:

nested formatted string

aiida.cmdline.utils.common.get_calcjob_report(calcjob)[source]

Return a multi line string representation of the log messages and output of a given calcjob

Parameters:calcjob – the calcjob node
Returns:a string representation of the log messages and scheduler output
aiida.cmdline.utils.common.get_env_with_venv_bin()[source]

Create a clone of the current running environment with the AIIDA_PATH variable set directory of the config.

aiida.cmdline.utils.common.get_node_info(node, include_summary=True)[source]

Return a multi line string of information about the given node, such as the incoming and outcoming links.

Parameters:include_summary – boolean, if True, also include a summary of node properties
Returns:a string summary of the node including a description of all its links and log messages
aiida.cmdline.utils.common.get_node_summary(node)[source]

Return a multi line string with a pretty formatted summary of a Node

Parameters:node – a Node instance
Returns:a string summary of the node
aiida.cmdline.utils.common.get_num_workers()[source]

Get the number of active daemon workers from the circus client

aiida.cmdline.utils.common.get_process_function_report(node)[source]

Return a multi line string representation of the log messages and output of a given process function node

Parameters:node – the node
Returns:a string representation of the log messages
aiida.cmdline.utils.common.get_workchain_report(node, levelname, indent_size=4, max_depth=None)[source]

Return a multi line string representation of the log messages and output of a given workchain

Parameters:node – the workchain node
Returns:a nested string representation of the log messages
aiida.cmdline.utils.common.print_last_process_state_change(process_type=None)[source]

Print the last time that a process of the specified type has changed its state. This function will also print a warning if the daemon is not running.

Parameters:process_type – optional process type for which to get the latest state change timestamp. Valid process types are either ‘calculation’ or ‘work’.
aiida.cmdline.utils.common.print_process_spec(process_spec)[source]

Print the process spec in a human-readable formatted way.

Parameters:process_spec – a ProcessSpec instance

Utility functions for command line commands related to the daemon.

aiida.cmdline.utils.daemon.delete_stale_pid_file(client)[source]

Delete a potentially state daemon PID file.

Checks if the PID contatined in the circus PID file (circus-{PROFILE_NAME}.pid) matches a valid running verdi process. If it does not, the PID file is stale and will be removed.

This situation can arise if a system is shut down suddenly and so the process is killed but the PID file is not deleted in time. When the get_daemon_pid() method is called, an incorrect PID is returned. Alternatively, another process or the user may have meddled with the PID file in some way, corrupting it.

Parameters:client – the DaemonClient
aiida.cmdline.utils.daemon.get_daemon_status(client)[source]

Print the status information of the daemon for a given profile through its DaemonClient

Parameters:client – the DaemonClient
aiida.cmdline.utils.daemon.print_client_response_status(response)[source]

Print the response status of a call to the CircusClient through the DaemonClient

Parameters:response – the response object

Various decorators useful for creating verdi commands, for example loading the dbenv lazily.

Always avoids trying to load the dbenv twice. When it has to be loaded, a spinner ASCII widget is displayed.

Provides:
  • with_dbenv, a decorator to frontload the dbenv for functions
  • dbenv, a contextmanager to load the dbenv only if a specific
    code branch gets visited and possibly avoiding the overhead if not
aiida.cmdline.utils.decorators.with_dbenv()[source]

Function decorator that will load the database environment only when the function is called.

Example:

@with_dbenv()
def create_node():
    from aiida.orm import Int  # note the local import
    node = Int(1).store()
aiida.cmdline.utils.decorators.dbenv()[source]

Loads the dbenv for a specific region of code, does not unload afterwards

Only use when it makes it possible to avoid loading the dbenv for certain code paths

Good Example:

# do this
@click.command()
@click.option('--with-db', is_flag=True)
def profile_info(with_db):
    # read the config file
    click.echo(profile_config)

    # load the db only if necessary
    if with_db:
        with dbenv():
            # gather db statistics for the profile
            click.echo(db_statistics)

This will run very fast without the –with-db flag and slow only if database info is requested

Do not use if you will end up loading the dbenv anyway

Bad Example:

# don't do this
def my_function():
    with dbenv():
        # read from db

    # do db unrelated stuff
aiida.cmdline.utils.decorators.only_if_daemon_running(echo_function=<function echo_critical>, message=None)[source]

Function decorator for CLI command to print critical error and exit automatically when daemon is not running.

The error printing and exit behavior can be controlled with the decorator keyword arguments. The default message that is printed can be overridden as well as the echo function that is to be used. By default it uses the aiida.cmdline.utils.echo.echo_critical function which automatically aborts the command. The function can be substituted by for example aiida.cmdline.utils.echo.echo_warning to instead print just a warning and continue.

Example:

@only_if_daemon_running(echo_function=echo.echo_warning, message='beware that the daemon is not running')
def create_node():
    pass
Parameters:
  • echo_function – echo function to issue the message, should be from aiida.cmdline.utils.echo
  • message – optional message to override the default message

Default values and lazy default get methods for command line options.

aiida.cmdline.utils.defaults.get_default_profile()[source]

Try to get the name of the default profile.

This utility function should only be used for defaults or callbacks in command line interface parameters. Otherwise, the preference should go to calling get_config to load the actual config and using config.default_profile_name to get the default profile name.

Raises:click.UsageError – if the config could not be loaded or no default profile exists
Returns:the default profile name or None if no default is defined in the configuration

Convenience functions for printing output from verdi commands

aiida.cmdline.utils.echo.echo(message, bold=False, nl=True, err=False)[source]

Print a normal message through click’s echo function to stdout

Parameters:
  • message – the string representing the message to print
  • bold – whether to print the message in bold
  • nl – whether to print a newline at the end of the message
  • err – whether to print to stderr
aiida.cmdline.utils.echo.echo_info(message, bold=False, nl=True, err=False)[source]

Print an info message through click’s echo function to stdout, prefixed with ‘Info:’

Parameters:
  • message – the string representing the message to print
  • bold – whether to print the message in bold
  • nl – whether to print a newline at the end of the message
  • err – whether to print to stderr
aiida.cmdline.utils.echo.echo_success(message, bold=False, nl=True, err=False)[source]

Print a success message through click’s echo function to stdout, prefixed with ‘Success:’

Parameters:
  • message – the string representing the message to print
  • bold – whether to print the message in bold include a newline character
  • nl – whether to print a newline at the end of the message
  • err – whether to print to stderr
aiida.cmdline.utils.echo.echo_warning(message, bold=False, nl=True, err=False)[source]

Print a warning message through click’s echo function to stdout, prefixed with ‘Warning:’

Parameters:
  • message – the string representing the message to print
  • bold – whether to print the message in bold
  • nl – whether to print a newline at the end of the message
  • err – whether to print to stderr
aiida.cmdline.utils.echo.echo_error(message, bold=False, nl=True, err=True)[source]

Print an error message through click’s echo function to stdout, prefixed with ‘Error:’

Parameters:
  • message – the string representing the message to print
  • bold – whether to print the message in bold
  • nl – whether to print a newline at the end of the message
  • err – whether to print to stderr
aiida.cmdline.utils.echo.echo_critical(message, bold=False, nl=True, err=True)[source]

Print an error message through click’s echo function to stdout, prefixed with ‘Critical:’ and then calls sys.exit with the given exit_status.

This should be used to print messages for errors that cannot be recovered from and so the script should be directly terminated with a non-zero exit status to indicate that the command failed

Parameters:
  • message – the string representing the message to print
  • bold – whether to print the message in bold
  • nl – whether to print a newline at the end of the message
  • err – whether to print to stderr
aiida.cmdline.utils.echo.echo_dictionary(dictionary, fmt='json+date')[source]

Print the given dictionary to stdout in the given format

Parameters:
  • dictionary – the dictionary
  • fmt – the format to use for printing

utilities for getting multi line input from the commandline

aiida.cmdline.utils.multi_line_input.edit_comment(old_cmt='')[source]

call up an editor to edit comments to nodes in the database

aiida.cmdline.utils.multi_line_input.edit_pre_post(pre=None, post=None, summary=None)[source]

use click to call up an editor to write or edit pre / post execution scripts for both codes and computers

aiida.cmdline.utils.multi_line_input.ensure_scripts(pre, post, summary)[source]

A function to check if the prepend and append scripts were specified, and if needed ask to edit them.

Parameters:
  • pre – prepend-text
  • post – append-text
  • summary – summary for click template
Returns:

Plugin aware click command Group.

class aiida.cmdline.utils.pluginable.Pluginable(*args, **kwargs)[source]

Bases: click.core.Group

A click command group that finds and loads plugin commands lazily.

__init__(*args, **kwargs)[source]

Initialize with entry point group.

__module__ = 'aiida.cmdline.utils.pluginable'
get_command(ctx, name)[source]

Try to load a subcommand from entry points, else defer to super.

list_commands(ctx)[source]

Add entry point names of available plugins to the command list.

set_exclude_external_plugins(exclude_external_plugins)[source]

Set whether external plugins should be excluded.

If exclude_external_plugins is set to True, the plugins that belong to the entry_point_group defined for this click.Group will not be discoverable. This is useful to limit the available commands to only those provided by aiida-core (excluding those provided by plugins).

Parameters:exclude_external_plugins – bool, when True, external plugins will not be discoverable

Utility functions for command line commands operating on the repository.

aiida.cmdline.utils.repository.list_repository_contents(node, path, color)[source]

Print the contents of the directory path in the repository of the given node to stdout.

Parameters:
  • node – the node
  • path – directory path

Definition of modules that are to be automatically loaded for verdi shell.

aiida.cmdline.utils.shell._ipython()[source]

Start IPython >= 1.0

aiida.cmdline.utils.shell._ipython_pre_011()[source]

Start IPython pre-0.11

aiida.cmdline.utils.shell._ipython_pre_100()[source]

Start IPython pre-1.0.0

aiida.cmdline.utils.shell.bpython()[source]

Start a bpython shell.

aiida.cmdline.utils.shell.get_start_namespace()[source]

Load all default and custom modules

aiida.cmdline.utils.shell.ipython()[source]

Start any version of IPython

aiida.cmdline.utils.shell.run_shell(interface=None)[source]

Start the chosen external shell.

Templates for input/output of verdi commands.

Unit tests for editing pre and post bash scripts, comments, etc.

class aiida.cmdline.utils.test_multiline.TestMultilineInput(methodName='runTest')[source]

Bases: unittest.case.TestCase

Test functions for editing pre and post bash scripts, comments, etc.

__module__ = 'aiida.cmdline.utils.test_multiline'
setUp()[source]

Hook method for setting up the test fixture before exercising it.

test_edit_comment()[source]
test_edit_pre_bash_comment()[source]

Test that bash comments starting with ‘#’ are NOT deleted

test_edit_pre_post()[source]
test_edit_pre_post_comment()[source]

Test that lines starting with ‘#=’ are ignored and are not ignored if they start with any other character

test_new_comment()[source]
test_pre_post()[source]