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- from nilmdb.utils.printf import *
- import nilmdb.utils.time
-
- import fnmatch
- import argparse
- from argparse import ArgumentDefaultsHelpFormatter as def_form
-
- def setup(self, sub):
- cmd = sub.add_parser("list", help="List streams",
- formatter_class = def_form,
- description="""
- List streams available in the database,
- optionally filtering by layout or path. Wildcards
- are accepted.
- """)
- cmd.set_defaults(verify = cmd_list_verify,
- handler = cmd_list)
-
- group = cmd.add_argument_group("Stream filtering")
- group.add_argument("-p", "--path", metavar="PATH", default="*",
- help="Match only this path (-p can be omitted)",
- ).completer = self.complete.path
- group.add_argument("path_positional", default="*",
- nargs="?", help=argparse.SUPPRESS,
- ).completer = self.complete.path
- group.add_argument("-l", "--layout", default="*",
- help="Match only this stream layout",
- ).completer = self.complete.layout
-
- group = cmd.add_argument_group("Interval info")
- group.add_argument("-E", "--ext", action="store_true",
- help="Show extended stream info, like interval "
- "extents and row count")
-
- group = cmd.add_argument_group("Interval details")
- group.add_argument("-d", "--detail", action="store_true",
- help="Show available data time intervals")
- group.add_argument("-s", "--start",
- metavar="TIME", type=self.arg_time,
- help="Starting timestamp for intervals "
- "(free-form, inclusive)",
- ).completer = self.complete.time
- group.add_argument("-e", "--end",
- metavar="TIME", type=self.arg_time,
- help="Ending timestamp for intervals "
- "(free-form, noninclusive)",
- ).completer = self.complete.time
-
- group = cmd.add_argument_group("Misc options")
- group.add_argument("-T", "--timestamp-raw", action="store_true",
- help="Show raw timestamps when printing times")
-
- return cmd
-
- def cmd_list_verify(self):
- # A hidden "path_positional" argument lets the user leave off the
- # "-p" when specifying the path. Handle it here.
- got_opt = self.args.path != "*"
- got_pos = self.args.path_positional != "*"
- if got_pos:
- if got_opt:
- self.parser.error("too many paths specified")
- else:
- self.args.path = self.args.path_positional
-
- if self.args.start is not None and self.args.end is not None:
- if self.args.start >= self.args.end:
- self.parser.error("start must precede end")
-
- if self.args.start is not None or self.args.end is not None:
- if not self.args.detail:
- self.parser.error("--start and --end only make sense with --detail")
-
- def cmd_list(self):
- """List available streams"""
- streams = self.client.stream_list(extended = True)
-
- if self.args.timestamp_raw:
- time_string = nilmdb.utils.time.timestamp_to_string
- else:
- time_string = nilmdb.utils.time.timestamp_to_human
-
- for stream in streams:
- (path, layout, int_min, int_max, rows, time) = stream[:6]
- if not (fnmatch.fnmatch(path, self.args.path) and
- fnmatch.fnmatch(layout, self.args.layout)):
- continue
-
- printf("%s %s\n", path, layout)
-
- if self.args.ext:
- if int_min is None or int_max is None:
- printf(" interval extents: (no data)\n")
- else:
- printf(" interval extents: %s -> %s\n",
- time_string(int_min), time_string(int_max))
- printf(" total data: %d rows, %.6f seconds\n",
- rows or 0,
- nilmdb.utils.time.timestamp_to_seconds(time or 0))
-
- if self.args.detail:
- printed = False
- for (start, end) in self.client.stream_intervals(
- path, self.args.start, self.args.end):
- printf(" [ %s -> %s ]\n", time_string(start), time_string(end))
- printed = True
- if not printed:
- printf(" (no intervals)\n")
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