#!/usr/bin/env python
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import logging
import click
from beat.core import dataformat
from . import commands
from . import common
from .click_helper import AliasedGroup
from .click_helper import AssetCommand
from .click_helper import AssetInfo
from .decorators import raise_on_error
logger = logging.getLogger(__name__)
[docs]def pull_impl(webapi, prefix, names, force, indentation, cache):
"""Copies dataformats (recursively) from the server.
Data formats are particularly tricky to download because of their recursive
nature. This requires a specialized recursive technique to download base and
referenced dataformats.
Parameters:
webapi (object): An instance of our WebAPI class, prepared to access the
BEAT server of interest
prefix (str): A string representing the root of the path in which the user
objects are stored
names (:py:class:`list`): A list of strings, each representing the unique
relative path of the objects to retrieve or a list of usernames from
which to retrieve objects. If the list is empty, then we pull all
available objects of a given type. If no user is set, then pull all
public objects of a given type.
force (bool): If set to ``True``, then overwrites local changes with the
remotely retrieved copies.
indentation (int): The indentation level, useful if this function is called
recursively while downloading different object types. This is normally
set to ``0`` (zero).
cache (dict): A dictionary containing all dataformats already downloaded.
Returns:
int: Indicating the exit status of the command, to be reported back to the
calling process. This value should be zero if everything works OK,
otherwise, different than zero (POSIX compliance).
"""
dataformats = set(names) # what is being request
download = dataformats - set(cache.keys()) # what we actually need
if not download:
return 0
status, downloaded = common.pull(
webapi,
prefix,
"dataformat",
download,
["declaration", "description"],
force,
indentation,
)
if status != 0:
return status
if indentation == 0:
indentation = 4
# see what else one needs to pull
for name in downloaded:
try:
obj = dataformat.DataFormat(prefix, name)
cache[name] = obj
if not obj.valid:
cache[name] = None
# downloads any dependencies
dataformats |= obj.referenced.keys()
except Exception as e:
logger.error("loading `%s': %s...", name, str(e))
cache[name] = None
# recurse until done
return pull_impl(webapi, prefix, dataformats, force, 2 + indentation, cache)
[docs]def get_dependencies(ctx, asset_name):
prefix = ctx.meta["config"].path
df = dataformat.DataFormat(prefix, asset_name)
dependencies = {}
dataformats = list(df.referenced.keys())
if dataformats:
dependencies["dataformats"] = dataformats
return dependencies
@click.group(cls=AliasedGroup)
@click.pass_context
def dataformats(ctx):
"""Configuration manipulation of data formats"""
CMD_LIST = [
"list",
"path",
"edit",
"check",
"status",
"create",
"version",
"fork",
"rm",
"diff",
"push",
]
commands.initialise_asset_commands(dataformats, CMD_LIST, DataformatCommand)
@dataformats.command()
@click.argument("name", nargs=-1)
@click.option(
"--force", help="Performs operation regardless of conflicts", is_flag=True
)
@click.pass_context
@raise_on_error
def pull(ctx, name, force):
"""Downloads the specified dataformats from the server
Example:
$ beat dataformats pull --force yyy
"""
with common.make_webapi(ctx.meta["config"]) as webapi:
name = common.make_up_remote_list(webapi, "dataformat", name)
if name is None:
return 1 # error
return pull_impl(webapi, ctx.meta["config"].path, name, force, 0, {})