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local: Add friendly help if no local library cache found

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Fixes #711
This commit is contained in:
Stein Magnus Jodal 2014-06-20 00:25:34 +02:00
parent 5c726c3228
commit 4919cae889
2 changed files with 12 additions and 0 deletions
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4
docs/changelog.rst
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@ -121,6 +121,10 @@ Feature release.
**Local backend** **Local backend**
- The JSON local library backend now logs a friendly message telling you about
``mopidy local scan`` if you don't have a local library cache. (Fixes:
:issue:`711`)
- The ``local scan`` command now use multiple threads to walk the file system - The ``local scan`` command now use multiple threads to walk the file system
and check files' modification time. This speeds up scanning, escpecially and check files' modification time. This speeds up scanning, escpecially
when scanning remote file systems over e.g. NFS. when scanning remote file systems over e.g. NFS.

8
mopidy/local/json.py
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@ -20,6 +20,14 @@ logger = logging.getLogger(__name__)
# TODO: move to load and dump in models? # TODO: move to load and dump in models?
def load_library(json_file): def load_library(json_file):
if not os.path.isfile(json_file):
logger.info(
'No local library metadata cache found at %s. Please run '
'`mopidy local scan` to index your local music library. '
'If you do not have a local music collection, you can disable the '
'local backend to hide this message.',
json_file)
return {}
try: try:
with gzip.open(json_file, 'rb') as fp: with gzip.open(json_file, 'rb') as fp:
return json.load(fp, object_hook=models.model_json_decoder) return json.load(fp, object_hook=models.model_json_decoder)