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bitbake: data_smart: implement remote datastore functionality

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This allows you to maintain a local reference to a remote datastore. The
actual implementation of the remote connection is delegated to a
connector object that the caller must define and supply. There is
support for getting variable values and expanding python references
(i.e. ${@...} remotely, however setting variables remotely is not
supported - any variable setting is done locally as if the datastore
were a copy (which it kind of is).

Loosely based on an earlier prototype implementation by Qing He.

(Bitbake rev: a3edc3eefa2d03c4ad5d12187b32fa4dc495082a)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Paul Eggleton
2016-12-13 20:07:04 +13:00
committed by Richard Purdie
parent 727f332829
commit d325d94f3f
2 changed files with 72 additions and 6 deletions
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bitbake/lib/bb/data_smart.py
+33 -6
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@@ -116,7 +116,15 @@ class VariableParse:
return match.group()
def python_sub(self, match):
code = match.group()[3:-1]
if isinstance(match, str):
code = match
else:
code = match.group()[3:-1]
if "_remote_data" in self.d:
connector = self.d["_remote_data"]
return connector.expandPythonRef(self.varname, code)
codeobj = compile(code.strip(), self.varname or "<expansion>", "eval")
parser = bb.codeparser.PythonParser(self.varname, logger)
@@ -247,10 +255,15 @@ class VariableHistory(object):
self.variables[var].append(loginfo.copy())
def variable(self, var):
if var in self.variables:
return self.variables[var]
remote_connector = self.dataroot.getVar('_remote_data', False)
if remote_connector:
varhistory = remote_connector.getVarHistory(var)
else:
return []
varhistory = []
if var in self.variables:
varhistory.extend(self.variables[var])
return varhistory
def emit(self, var, oval, val, o, d):
history = self.variable(var)
@@ -449,6 +462,10 @@ class DataSmart(MutableMapping):
if var in dest:
return dest[var]
if "_remote_data" in dest:
connector = dest["_remote_data"]["_content"]
return connector.getVar(var)
if "_data" not in dest:
break
dest = dest["_data"]
@@ -471,6 +488,12 @@ class DataSmart(MutableMapping):
if 'parsing' in loginfo:
parsing=True
if '_remote_data' in self.dict:
connector = self.dict["_remote_data"]["_content"]
res = connector.setVar(var, value)
if not res:
return
if 'op' not in loginfo:
loginfo['op'] = "set"
self.expand_cache = {}
@@ -875,7 +898,7 @@ class DataSmart(MutableMapping):
def localkeys(self):
for key in self.dict:
if key != '_data':
if key not in ['_data', '_remote_data']:
yield key
def __iter__(self):
@@ -884,7 +907,7 @@ class DataSmart(MutableMapping):
def keylist(d):
klist = set()
for key in d:
if key == "_data":
if key in ["_data", "_remote_data"]:
continue
if key in deleted:
continue
@@ -898,6 +921,10 @@ class DataSmart(MutableMapping):
if "_data" in d:
klist |= keylist(d["_data"])
if "_remote_data" in d:
connector = d["_remote_data"]["_content"]
klist |= connector.getKeys()
return klist
self.need_overrides()