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Package looper Documentation

Project configuration, particularly for logging.

Project-scope constants may reside here, but more importantly, some setup here will provide a logging infrastructure for all of the project's modules. Individual modules and classes may provide separate configuration on a more local level, but this will at least provide a foundation.

Class Project

Looper-specific Project.

Parameters:

  • cfg (str): path to configuration file with data fromwhich Project is to be built
  • amendments (Iterable[str]): name indicating amendment to use, optional
  • divcfg_path (str): path to an environment configuration YAML filespecifying compute settings.
  • permissive (bool): Whether a error should be thrown ifa sample input file(s) do not exist or cannot be open.
  • compute_env_file (str): Environment configuration YAML file specifyingcompute settings.
def __init__(self, cfg=None, amendments=None, divcfg_path=None, **kwargs)

Initialize self. See help(type(self)) for accurate signature.

def amendments(self)

Return currently active list of amendments or None if none was activated

Returns:

  • Iterable[str]: a list of currently active amendment names
def cli_pifaces(self)

Collection of pipeline interface sources specified in object constructor

Returns:

  • list[str]: collection of pipeline interface sources
def config(self)

Get the config mapping

Returns:

  • Mapping: config. May be formatted to comply with the mostrecent version specifications
def config_file(self)

Get the config file path

Returns:

  • str: path to the config file
def description(self)

def from_dict(cls, pep_dictionary: dict)

Init a peppy project instance from a dictionary representation of an already processed PEP.

Parameters:

  • pep_dictionary (Dict[Any]): dict,_samples: list | dict, _subsamples: list[list | dict]}
def from_pandas(cls, samples_df: pandas.core.frame.DataFrame, sub_samples_df: List[pandas.core.frame.DataFrame]=None, config: dict=None)

Init a peppy project instance from a pandas Dataframe

Parameters:

  • samples_df (``): in-memory pandas DataFrame object of samples
  • sub_samples_df (``): in-memory list of pandas DataFrame objects of sub-samples
  • config (``): dict of yaml file
def from_pep_config(cls, cfg: str=None, amendments: Union[str, Iterable[str]]=None, sample_table_index: Union[str, Iterable[str]]=None, subsample_table_index: Union[str, Iterable[str]]=None, defer_samples_creation: bool=False)

Init a peppy project instance from a yaml file

Parameters:

  • cfg (str): Project config file (YAML) or sample table (CSV/TSV)with one row per sample to constitute project
  • sample_table_index (str | Iterable[str]): name of the columns to setthe sample_table index to
  • subsample_table_index (str | Iterable[str]): name of the columns to setthe subsample_table index to
  • amendments (str | Iterable[str]): names of the amendments to activate
  • amendments (Iterable[str]): amendments to use within configuration file
  • defer_samples_creation (bool): whether the sample creation should be skipped
def from_sample_yaml(cls, yaml_file: str)

Init a peppy project instance from a yaml file

Parameters:

  • yaml_file (str): path to yaml file
def get_sample_piface(self, sample_name)

Get a list of pipeline interfaces associated with the specified sample.

Note that only valid pipeline interfaces will show up in the result (ones that exist on disk/remotely and validate successfully against the schema)

Parameters:

  • sample_name (str): name of the sample to retrieve list ofpipeline interfaces for

Returns:

  • list[looper.PipelineInterface]: collection of validpipeline interfaces associated with selected sample
def get_schemas(pifaces, schema_key='input_schema')

Get the list of unique schema paths for a list of pipeline interfaces

Parameters:

  • pifaces (str | Iterable[str]): pipeline interfaces to searchschemas for
  • schema_key (str): where to look for schemas in the piface

Returns:

  • Iterable[str]: unique list of schema file paths
def is_sample_table_large(self)

def list_amendments(self)

Return a list of available amendments or None if not declared

Returns:

  • Iterable[str]: a list of available amendment names
def make_project_dirs(self)

Create project directory structure if it doesn't exist.

def name(self)

def output_dir(self)

Output directory for the project, specified in object constructor

Returns:

  • str: path to the output directory
def pep_version(self)

The declared PEP version string

It is validated to make sure it is a valid PEP version string

Returns:

  • str: PEP version string

Raises:

  • InvalidConfigFileException: in case of invalid PEP version
def piface_key(self)

Name of the pipeline interface attribute for this project

Returns:

  • str: name of the pipeline interface attribute
def populate_pipeline_outputs(self)

Populate project and sample output attributes based on output schemas that pipeline interfaces point to.

def results_folder(self)

Path to the results folder for the project

Returns:

  • str: path to the results folder in the output folder
def sample_name_colname(self)

Deprecated, please use Project.sample_table_index instead

Name of the effective sample name containing column in the sample table. It is "sample_name" by default, but when it's missing it could be replaced by the selected sample table index, defined on the object instantiation stage.

Returns:

  • str: name of the column that consist of sample identifiers
def sample_table(self)

Get sample table. If any sample edits were performed, it will be re-generated

Returns:

  • pandas.DataFrame: a data frame with current samples attributes
def sample_table_index(self)

The effective sample table index.

It is sample_name by default, but could be overwritten by the selected sample table index, defined on the object instantiation stage or in the project configuration file via sample_table_index field. That's the sample table index selection priority order: 1. Constructor specified 2. Config specified 3. Default: sample_table

Returns:

  • str: name of the column that consist of sample identifiers
def samples(self)

Generic/base Sample instance for each of this Project's samples.

Returns:

  • Iterable[Sample]: Sample instance for eachof this Project's samples
def selected_compute_package(self)

Compute package name specified in object constructor

Returns:

  • str: compute package name
def set_sample_piface(self, sample_piface: Union[List[str], str]) -> NoReturn

Add sample pipeline interfaces variable to object

Parameters:

  • sample_piface (list | str): sample pipeline interface
def submission_folder(self)

Path to the submission folder for the project

Returns:

  • str: path to the submission in the output folder
def subsample_table(self)

Get subsample table

Returns:

  • pandas.DataFrame: a data frame with subsample attributes
def subsample_table_index(self)

The effective subsample table indexes.

It is [subasample_name, sample_name] by default, but could be overwritten by the selected subsample table indexes, defined on the object instantiation stage or in the project configuration file via subsample_table_index field. That's the subsample table indexes selection priority order: 1. Constructor specified 2. Config specified 3. Default: [subasample_name, sample_name]

Returns:

  • List[str]: names of the columns that consist of sample and subsample identifiers

Class PipelineInterface

This class parses, holds, and returns information for a yaml file that specifies how to interact with each individual pipeline. This includes both resources to request for cluster job submission, as well as arguments to be passed from the sample annotation metadata to the pipeline

Parameters:

  • config (str | Mapping): path to file from which to parseconfiguration data, or pre-parsed configuration data.
  • pipeline_type (str): type of the pipeline,must be either 'sample' or 'project'.
def __init__(self, config, pipeline_type=None)

Object constructor

Parameters:

  • entries (Iterable[(str, object)] | Mapping[str, object]): YAML collectionof key-value pairs.
  • filepath (str): Path to the YAML config file.
  • yamldata (str): YAML-formatted string
  • locked (bool): Whether to initialize as locked (providing write capability)
  • wait_max (int): how long to wait for creating an object when the filethat data will be read from is locked
  • strict_ro_locks (bool): By default, we allow RO filesystems that can't be locked.Turn on strict_ro_locks to error if locks cannot be enforced on readonly filesystems.
  • skip_read_lock (bool): whether the file should not be locked for readingwhen object is created in read only mode
  • schema_source (str): path or a URL to a jsonschema in YAML format to usefor optional config validation. If this argument is provided the object is always validated at least once, at the object creation stage.
  • validate_on_write (bool): a boolean indicating whether the object should bevalidated every time the write method is executed, which is a way of preventing invalid config writing
  • create_file (str): Create an empty file at filepath upon data load.
def choose_resource_package(self, namespaces, file_size)

Select resource bundle for given input file size to given pipeline.

Parameters:

  • file_size (float): Size of input data (in gigabytes).
  • namespaces (Mapping[Mapping[str]]): namespaced variables to passas a context for fluid attributes command rendering

Returns:

  • MutableMapping: resource bundle appropriate for given pipeline,for given input file size

Raises:

  • ValueError: if indicated file size is negative, or if thefile size value specified for any resource package is negative
  • InvalidResourceSpecificationException: if no defaultresource package specification is provided
def copy(self)

Copy self to a new object.

def exp(self)

Returns a copy of the object's data elements with env vars and user vars expanded. Use it like: object.exp["item"]

def get_pipeline_schemas(self, schema_key='input_schema')

Get path to the pipeline schema.

Parameters:

  • schema_key (str): where to look for schemas in the pipeline iface

Returns:

  • str: absolute path to the pipeline schema file
def pipeline_name(self)

def rebase(self, *args, **kwargs)

def render_var_templates(self, namespaces)

Render path templates under 'var_templates' in this pipeline interface.

Parameters:

  • namespaces (dict): namespaces to use for rendering
def reset(self, *args, **kwargs)

def settings(self)

def write(self, *args, **kwargs)

Class SubmissionConductor

Collects and then submits pipeline jobs.

This class holds a 'pool' of commands to submit as a single cluster job. Eager to submit a job, each instance's collection of commands expands until it reaches the 'pool' has been filled, and it's therefore time to submit the job. The pool fills as soon as a fill criteria has been reached, which can be either total input file size or the number of individual commands.

def __init__(self, pipeline_interface, prj, delay=0, extra_args=None, extra_args_override=None, ignore_flags=False, compute_variables=None, max_cmds=None, max_size=None, max_jobs=None, automatic=True, collate=False)

Create a job submission manager.

The most critical inputs are the pipeline interface and the pipeline key, which together determine which provide critical pipeline information like resource allocation packages and which pipeline will be overseen by this instance, respectively.

Parameters:

  • pipeline_interface (PipelineInterface): Collection of importantdata for one or more pipelines, like resource allocation packages and option/argument specifications
  • prj (``): Project with which each sample being considered isassociated (what generated each sample)
  • delay (float): Time (in seconds) to wait before submitting a jobonce it's ready
  • extra_args (str): string to pass to each job generated,for example additional pipeline arguments
  • extra_args_override (str): string to pass to each job generated,for example additional pipeline arguments. This deactivates the 'extra' functionality that appends strings defined in Sample.command_extra and Project.looper.command_extra to the command template.
  • ignore_flags (bool): Whether to ignore flag files present inthe sample folder for each sample considered for submission
  • compute_variables (dict[str]): A dict with variables that will be madeavailable to the compute package. For example, this should include the name of the cluster partition to which job or jobs will be submitted
  • max_cmds (int | NoneType): Upper bound on number of commands toinclude in a single job script.
  • max_size (int | float | NoneType): Upper bound on total filesize of inputs used by the commands lumped into single job script.
  • max_jobs (int | float | NoneType): Upper bound on total number of jobs togroup samples for submission.
  • automatic (bool): Whether the submission should be automatic oncethe pool reaches capacity.
  • collate (bool): Whether a collate job is to be submitted (runs onthe project level, rather that on the sample level)
def add_sample(self, sample, rerun=False)

Add a sample for submission to this conductor.

Parameters:

  • sample (peppy.Sample): sample to be included with this conductor'scurrently growing collection of command submissions
  • rerun (bool): whether the given sample is being rerun rather thanrun for the first time

Returns:

  • bool: Indication of whether the given sample was added tothe current 'pool.'

Raises:

  • TypeError: If sample subtype is provided but does not extendthe base Sample class, raise a TypeError.
def failed_samples(self)

def is_project_submittable(self, force=False)

Check whether the current project has been already submitted

Parameters:

  • frorce (bool): whether to force the project submission (ignore status/flags)
def num_cmd_submissions(self)

Return the number of commands that this conductor has submitted.

Returns:

  • int: Number of commands submitted so far.
def num_job_submissions(self)

Return the number of jobs that this conductor has submitted.

Returns:

  • int: Number of jobs submitted so far.
def submit(self, force=False)

Submit one or more commands as a job.

This call will submit the commands corresponding to the current pool of samples if and only if the argument to 'force' evaluates to a true value, or the pool of samples is full.

Parameters:

  • force (bool): Whether submission should be done/simulated evenif this conductor's pool isn't full.

Returns:

  • bool: Whether a job was submitted (or would've been ifnot for dry run)
def write_script(self, pool, size)

Create the script for job submission.

Parameters:

  • pool (Iterable[peppy.Sample]): collection of sample instances
  • size (float): cumulative size of the given pool

Returns:

  • str: Path to the job submission script created.

Class ComputingConfiguration

Represents computing configuration objects.

The ComputingConfiguration class provides a computing configuration object that is an in memory representation of a divvy computing configuration file. This object has various functions to allow a user to activate, modify, and retrieve computing configuration files, and use these values to populate job submission script templates.

Parameters:

  • entries (str | Iterable[(str, object)] | Mapping[str, object]): configCollection of key-value pairs.
  • filepath (str): YAML file specifying computing package data. (theDIVCFG file)
def __init__(self, entries=None, wait_max=None, strict_ro_locks=False, schema_source=None, validate_on_write=False)

Object constructor

Parameters:

  • entries (Iterable[(str, object)] | Mapping[str, object]): YAML collectionof key-value pairs.
  • yamldata (str): YAML-formatted string
  • wait_max (int): how long to wait for creating an object when the filethat data will be read from is locked
  • strict_ro_locks (bool): By default, we allow RO filesystems that can't be locked.Turn on strict_ro_locks to error if locks cannot be enforced on readonly filesystems.
  • skip_read_lock (bool): whether the file should not be locked for readingwhen object is created in read only mode
  • schema_source (str): path or a URL to a jsonschema in YAML format to usefor optional config validation. If this argument is provided the object is always validated at least once, at the object creation stage.
  • validate_on_write (bool): a boolean indicating whether the object should bevalidated every time the write method is executed, which is a way of preventing invalid config writing
def activate_package(self, package_name)

Activates a compute package.

This copies the computing attributes from the configuration file into the compute attribute, where the class stores current compute settings.

Parameters:

  • package_name (str): name for non-resource compute bundle,the name of a subsection in an environment configuration file

Returns:

  • bool: success flag for attempt to establish compute settings
def clean_start(self, package_name)

Clear current active settings and then activate the given package.

Parameters:

  • package_name (str): name of the resource package to activate

Returns:

  • bool: success flag
def compute_env_var(self)

Environment variable through which to access compute settings.

Returns:

  • list[str]: names of candidate environment variables, for whichvalue may be path to compute settings file; first found is used.
def default_config_file(self)

Path to default compute environment settings file.

Returns:

  • str: Path to default compute settings file
def exp(self)

Returns a copy of the object's data elements with env vars and user vars expanded. Use it like: object.exp["item"]

def from_obj(cls, entries: object, **kwargs)

Initialize from a Python object (dict, list, or primitive).

Parameters:

  • entries (obj): object to initialize from.
  • kwargs (``): Keyword arguments to pass to the constructor.
def from_yaml_data(cls, yamldata, **kwargs)

Initialize from a YAML string.

Parameters:

  • yamldata (str): YAML-formatted string.
  • kwargs (``): Keyword arguments to pass to the constructor.
def from_yaml_file(cls, filepath: str, create_file: bool=False, **kwargs)

Initialize from a YAML file.

Parameters:

  • filepath (str): Path to the YAML config file.
  • create_file (str): Create a file at filepath if it doesn't exist.
  • kwargs (``): Keyword arguments to pass to the constructor.
def get_active_package(self) -> yacman.yacman_future.FutureYAMLConfigManager

Returns settings for the currently active compute package

Returns:

  • YAMLConfigManager: data defining the active compute package
def get_adapters(self) -> yacman.yacman_future.FutureYAMLConfigManager

Get current adapters, if defined.

Adapters are sourced from the 'adapters' section in the root of the divvy configuration file and updated with an active compute package-specific set of adapters, if any defined in 'adapters' section under currently active compute package.

Returns:

  • YAMLConfigManager: current adapters mapping
def list_compute_packages(self)

Returns a list of available compute packages.

Returns:

  • set[str]: names of available compute packages
def rebase(self, *args, **kwargs)

def reset(self, *args, **kwargs)

def reset_active_settings(self)

Clear out current compute settings.

Returns:

  • bool: success flag
def settings(self)

def submit(self, output_path, extra_vars=None)

def template(self)

Get the currently active submission template.

Returns:

  • str: submission script content template for current state
def templates_folder(self)

Path to folder with default submission templates.

Returns:

  • str: path to folder with default submission templates
def update_packages(self, config_file)

Parse data from divvy configuration file.

Given a divvy configuration file, this function will update (not overwrite) existing compute packages with existing values. It does not affect any currently active settings.

Parameters:

  • config_file (str): path to file with new divvy configuration data
def write(self, filename=None)

def write_script(self, output_path, extra_vars=None)

Given currently active settings, populate the active template to write a submission script. Additionally use the current adapters to adjust the select of the provided variables

Parameters:

  • output_path (str): Path to file to write as submission script
  • extra_vars (Iterable[Mapping]): A list of Dict objects withkey-value pairs with which to populate template fields. These will override any values in the currently active compute package.

Returns:

  • str: Path to the submission script file
def select_divvy_config(filepath)

Selects the divvy config file path to load.

This uses a priority ordering to first choose a config file path if it's given, but if not, then look in a priority list of environment variables and choose the first available file path to return. If none of these options succeed, the default config path will be returned.

Parameters:

  • filepath (str | NoneType): direct file path specification

Returns:

  • str: path to the config file to read

Version Information: looper v2.0.0a1, generated by lucidoc v0.4.4