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206 lines
7.0 KiB
Python
206 lines
7.0 KiB
Python
# (c) 2013, Jan-Piet Mens <jpmens(at)gmail.com>
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# (c) 2017 Ansible Project
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import annotations
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DOCUMENTATION = r"""
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name: csvfile
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author: Jan-Piet Mens (@jpmens) <jpmens(at)gmail.com>
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version_added: "1.5"
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short_description: read data from a TSV or CSV file
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description:
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- The csvfile lookup reads the contents of a file in CSV (comma-separated value) format.
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The lookup looks for the row where the first column matches keyname (which can be multiple words)
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and returns the value in the O(col) column (default 1, which indexed from 0 means the second column in the file).
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options:
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col:
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description: column to return (0 indexed).
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default: "1"
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keycol:
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description: column to search in (0 indexed).
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default: 0
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type: int
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version_added: "2.17"
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default:
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description: what to return if the value is not found in the file.
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delimiter:
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description: field separator in the file, for a tab you can specify V(TAB) or V(\\t).
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default: TAB
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file:
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description: name of the CSV/TSV file to open.
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default: ansible.csv
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encoding:
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description: Encoding (character set) of the used CSV file.
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default: utf-8
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version_added: "2.1"
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notes:
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- The default is for TSV files (tab delimited) not CSV (comma delimited) ... yes the name is misleading.
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- As of version 2.11, the search parameter (text that must match the first column of the file) and filename parameter can be multi-word.
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- For historical reasons, in the search keyname, quotes are treated
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literally and cannot be used around the string unless they appear
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(escaped as required) in the first column of the file you are parsing.
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seealso:
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- ref: playbook_task_paths
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description: Search paths used for relative files.
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"""
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EXAMPLES = """
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- name: Match 'Li' on the first column, return the second column (0 based index)
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ansible.builtin.debug: msg="The atomic number of Lithium is {{ lookup('ansible.builtin.csvfile', 'Li file=elements.csv delimiter=,') }}"
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- name: msg="Match 'Li' on the first column, but return the 3rd column (columns start counting after the match)"
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ansible.builtin.debug: msg="The atomic mass of Lithium is {{ lookup('ansible.builtin.csvfile', 'Li file=elements.csv delimiter=, col=2') }}"
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# Contents of bgp_neighbors.csv
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# 127.0.0.1,10.0.0.1,24,nones,lola,pepe,127.0.0.2
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# 128.0.0.1,10.1.0.1,20,notes,lolita,pepito,128.0.0.2
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# 129.0.0.1,10.2.0.1,23,nines,aayush,pepete,129.0.0.2
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- name: Define values from CSV file, this reads file in one go, but you could also use col= to read each in it's own lookup.
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ansible.builtin.set_fact:
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'{{ columns[item|int] }}': "{{ csvline }}"
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vars:
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csvline: "{{ lookup('csvfile', bgp_neighbor_ip, file='bgp_neighbors.csv', delimiter=',', col=item) }}"
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columns: ['loop_ip', 'int_ip', 'int_mask', 'int_name', 'local_as', 'neighbour_as', 'neight_int_ip']
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bgp_neighbor_ip: '127.0.0.1'
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loop: '{{ range(columns|length|int) }}'
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delegate_to: localhost
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delegate_facts: true
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# Contents of people.csv
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# # Last,First,Email,Extension
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# Smith,Jane,jsmith@example.com,1234
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- name: Specify the column (by keycol) in which the string should be searched
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assert:
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that:
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- lookup('ansible.builtin.csvfile', 'Jane', file='people.csv', delimiter=',', col=0, keycol=1) == "Smith"
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"""
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RETURN = """
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_raw:
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description:
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- value(s) stored in file column
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type: list
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elements: str
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"""
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import codecs
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import csv
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from collections.abc import MutableSequence
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from ansible.errors import AnsibleError, AnsibleAssertionError
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from ansible.parsing.splitter import parse_kv
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from ansible.plugins.lookup import LookupBase
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from ansible.module_utils.six import PY2
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from ansible.module_utils.common.text.converters import to_bytes, to_native, to_text
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class CSVRecoder:
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"""
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Iterator that reads an encoded stream and encodes the input to UTF-8
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"""
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def __init__(self, f, encoding='utf-8'):
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self.reader = codecs.getreader(encoding)(f)
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def __iter__(self):
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return self
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def __next__(self):
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return next(self.reader).encode("utf-8")
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next = __next__ # For Python 2
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class CSVReader:
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"""
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A CSV reader which will iterate over lines in the CSV file "f",
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which is encoded in the given encoding.
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"""
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def __init__(self, f, dialect=csv.excel, encoding='utf-8', **kwds):
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if PY2:
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f = CSVRecoder(f, encoding)
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else:
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f = codecs.getreader(encoding)(f)
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self.reader = csv.reader(f, dialect=dialect, **kwds)
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def __next__(self):
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row = next(self.reader)
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return [to_text(s) for s in row]
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next = __next__ # For Python 2
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def __iter__(self):
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return self
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class LookupModule(LookupBase):
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def read_csv(self, filename, key, delimiter, encoding='utf-8', dflt=None, col=1, keycol=0):
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try:
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f = open(to_bytes(filename), 'rb')
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creader = CSVReader(f, delimiter=to_native(delimiter), encoding=encoding)
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for row in creader:
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if len(row) and row[keycol] == key:
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return row[int(col)]
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except Exception as e:
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raise AnsibleError("csvfile: %s" % to_native(e))
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return dflt
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def run(self, terms, variables=None, **kwargs):
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ret = []
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self.set_options(var_options=variables, direct=kwargs)
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# populate options
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paramvals = self.get_options()
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for term in terms:
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kv = parse_kv(term)
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if '_raw_params' not in kv:
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raise AnsibleError('Search key is required but was not found')
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key = kv['_raw_params']
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# parameters override per term using k/v
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try:
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reset_params = False
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for name, value in kv.items():
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if name == '_raw_params':
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continue
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if name not in paramvals:
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raise AnsibleAssertionError('%s is not a valid option' % name)
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self._deprecate_inline_kv()
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self.set_option(name, value)
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reset_params = True
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if reset_params:
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paramvals = self.get_options()
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except (ValueError, AssertionError) as e:
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raise AnsibleError(e)
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# default is just placeholder for real tab
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if paramvals['delimiter'] == 'TAB':
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paramvals['delimiter'] = "\t"
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lookupfile = self.find_file_in_search_path(variables, 'files', paramvals['file'])
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var = self.read_csv(lookupfile, key, paramvals['delimiter'], paramvals['encoding'], paramvals['default'], paramvals['col'], paramvals['keycol'])
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if var is not None:
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if isinstance(var, MutableSequence):
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for v in var:
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ret.append(v)
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else:
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ret.append(var)
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return ret
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