initial postconf parser

jc/lib.py

@@ -73,6 +73,7 @@ parsers = [
     'ping-s',
     'pip-list',
     'pip-show',
+    'postconf',
     'ps',
     'route',
     'rpm-qi',

jc/parsers/postconf.py

@@ -0,0 +1,102 @@
+"""jc - JSON Convert `postconf -M` command output parser
+
+Usage (cli):
+
+    $ postconf -M | jc --postconf
+
+    or
+
+    $ jc postconf -M
+
+Usage (module):
+
+    import jc
+    result = jc.parse('postconf', postconf_command_output)
+
+Schema:
+
+    [
+      {
+        "postconf":     string,
+        "bar":     boolean,
+        "baz":     integer
+      }
+    ]
+
+Examples:
+
+    $ postconf | jc --postconf -p
+    []
+
+    $ postconf | jc --postconf -p -r
+    []
+"""
+from typing import List, Dict
+import jc.utils
+from jc.parsers.universal import simple_table_parse
+
+
+class info():
+    """Provides parser metadata (version, author, etc.)"""
+    version = '1.0'
+    description = '`postconf -M` command parser'
+    author = 'Kelly Brazil'
+    author_email = 'kellyjonbrazil@gmail.com'
+    compatible = ['linux']
+    magic_commands = ['postconf -M']
+
+
+__version__ = info.version
+
+
+def _process(proc_data: List[Dict]) -> List[Dict]:
+    """
+    Final processing to conform to the schema.
+
+    Parameters:
+
+        proc_data:   (List of Dictionaries) raw structured data to process
+
+    Returns:
+
+        List of Dictionaries. Structured to conform to the schema.
+    """
+
+    # process the data here
+    # rebuild output for added semantic information
+    # use helper functions in jc.utils for int, float, bool
+    # conversions and timestamps
+
+    return proc_data
+
+
+def parse(
+    data: str,
+    raw: bool = False,
+    quiet: bool = False
+) -> List[Dict]:
+    """
+    Main text parsing function
+
+    Parameters:
+
+        data:        (string)  text data to parse
+        raw:         (boolean) unprocessed output if True
+        quiet:       (boolean) suppress warning messages if True
+
+    Returns:
+
+        List of Dictionaries. Raw or processed structured data.
+    """
+    jc.utils.compatibility(__name__, info.compatible, quiet)
+    jc.utils.input_type_check(data)
+
+    raw_output: List = []
+
+    if jc.utils.has_data(data):
+        table = ['service_name service_type private unprivileged chroot wake_up_time process_limit command']
+        data_list = list(filter(None, data.splitlines()))
+        table.extend(data_list)
+        raw_output = simple_table_parse(table)
+
+    return raw_output if raw else _process(raw_output)

tests/fixtures/generic/postconf-M.out

@@ -0,0 +1,31 @@
+smtp       inet  n       -       y       -       -       smtpd
+pickup     unix  n       -       y       60      1       pickup
+cleanup    unix  n       -       y       -       0       cleanup
+qmgr       unix  n       -       n       300     1       qmgr
+tlsmgr     unix  -       -       y       1000?   1       tlsmgr
+rewrite    unix  -       -       y       -       -       trivial-rewrite
+bounce     unix  -       -       y       -       0       bounce
+defer      unix  -       -       y       -       0       bounce
+trace      unix  -       -       y       -       0       bounce
+verify     unix  -       -       y       -       1       verify
+flush      unix  n       -       y       1000?   0       flush
+proxymap   unix  -       -       n       -       -       proxymap
+proxywrite unix  -       -       n       -       1       proxymap
+smtp       unix  -       -       y       -       -       smtp
+relay      unix  -       -       y       -       -       smtp -o syslog_name=postfix/$service_name
+showq      unix  n       -       y       -       -       showq
+error      unix  -       -       y       -       -       error
+retry      unix  -       -       y       -       -       error
+discard    unix  -       -       y       -       -       discard
+local      unix  -       n       n       -       -       local
+virtual    unix  -       n       n       -       -       virtual
+lmtp       unix  -       -       y       -       -       lmtp
+anvil      unix  -       -       y       -       1       anvil
+scache     unix  -       -       y       -       1       scache
+postlog    unix-dgram n  -       n       -       1       postlogd
+maildrop   unix  -       n       n       -       -       pipe flags=DRXhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
+uucp       unix  -       n       n       -       -       pipe flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
+ifmail     unix  -       n       n       -       -       pipe flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
+bsmtp      unix  -       n       n       -       -       pipe flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
+scalemail-backend unix - n       n       -       2       pipe flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
+mailman    unix  -       n       n       -       -       pipe flags=FRX user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py ${nexthop} ${user}