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"""
BitBake 'remotedata' module
Provides support for using a datastore from the bitbake client
"""
# Copyright (C) 2016 Intel Corporation
#
# SPDX-License-Identifier: GPL-2.0-only
#
import bb.data
class RemoteDatastores:
"""Used on the server side to manage references to server-side datastores"""
def __init__(self, cooker):
self.cooker = cooker
self.datastores = {}
self.locked = []
self.datastores[0] = self.cooker.data
self.nextindex = 1
def __len__(self):
return len(self.datastores)
def __getitem__(self, key):
# Cooker could have changed its datastore from under us
self.datastores[0] = self.cooker.data
return self.datastores[key]
def items(self):
return self.datastores.items()
def store(self, d, locked=False):
"""
Put a datastore into the collection. If locked=True then the datastore
is understood to be managed externally and cannot be released by calling
release().
"""
idx = self.nextindex
self.datastores[idx] = d
if locked:
self.locked.append(idx)
self.nextindex += 1
return idx
def check_store(self, d, locked=False):
"""
Put a datastore into the collection if it's not already in there;
in either case return the index
"""
for key, val in self.datastores.items():
if val is d:
idx = key
break
else:
idx = self.store(d, locked)
return idx
def release(self, idx):
"""Discard a datastore in the collection"""
if idx in self.locked:
raise Exception('Tried to release locked datastore %d' % idx)
del self.datastores[idx]
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