| |
|
| Changed, Enhanced, or Newly Deprecated Features |
Changed, Enhanced, or Newly Deprecated Features |
| |
|
| - 'peak.naming' no longer automatically converts all addresses to the |
- 'naming.IName' is now derived from 'binding.IComponentKey', so names and |
| addressed objects. You must specifically request the interface you want |
addresses must now support the 'findComponent()' method. All PEAK name and |
| by adapting the retrieved object to that interface. This can be done by |
address types provide support for this. |
| supplying an 'adaptTo=ISomething' keyword argument to the attribute binding |
|
| definition or your 'lookupComponent()' call. |
- The 'lookup()' method of 'binding.IComponentKey' is now called |
| |
'findComponent()', to better distinguish it from 'lookup()' in |
| The naming system no longer has 'objectFactories' and 'stateFactories'; |
'naming.IBasicContext', which does something very different. |
| these have been replaced with adaptation. Writable naming contexts must |
|
| have a 'serializationProtocol' attribute specifying what interface an object |
- 'binding.bindTo()' and 'binding.bindSequence()' now pre-adapt their |
| should be adapted to before attempting to store it in that context. |
arguments to 'IComponentKey', to speed lookups at runtime, and to ensure |
| |
that errors due to an unusable parameter type occur at class creation time |
| |
instead of waiting until lookup time. |
| |
|
| |
- The following 'binding' forms are now deprecated, and will go away before |
| |
0.5 beta is released: |
| |
|
| |
'bindToProperty(x,y)' -- use 'bindTo(PropertyName(x),default=y)' |
| |
|
| |
'bindToParent()' -- use 'bindTo("..")' |
| |
|
| |
'bindToSelf()' -- use 'bindTo(".")' |
| |
|
| |
'bindToUtilities()' -- no replacement; let me know if you're using this. |
| |
|
| |
- There's a new 'peak.storage.files' module, with handy classes like |
| |
'EditableFile'. 'EditableFile' is a class that lets you edit the contents |
| |
of a file "in place", with atomic replacement of the original at transaction |
| |
commit. If the transaction is aborted, the original file is left unchanged. |
| |
|
| |
- 'peak.running.scheduler.UntwistedReactor' now supports a configuration |
| |
property ('peak.running.reactor.checkInterval') to determine how long it |
| |
should run 'select()' calls for, when there are no scheduled tasks. |
| |
|
| |
- 'peak.running.scheduler.UntwistedReactor' now supports using a "signal |
| |
manager" component (via the 'peak.running.signalManager' property) to |
| |
process signals while a 'run()' loop is in progress. Signal managers can |
| |
also be added or removed at any time via the new 'peak.util.signal_stack' |
| |
module. |
| |
|
| |
- 'peak.running.commands.AbstractCommand' now offers a '_run()' method that |
| |
can be overridden in subclasses, instead of 'run()'. If you override the |
| |
new '_run()' method instead, you get the advantage of automatic handling |
| |
for invocation errors and 'SystemExit' exceptions, provided for you by the |
| |
'run()' method. |
| |
|
| |
- There is now a 'storage.DMFor(class)' function that returns a configuration |
| |
key for registering or looking up data managers by class. You can use the |
| |
returned key in a binding's 'offerAs' list, or as the target of a 'bindTo()' |
| |
or 'lookupComponent()'. The key is constructed using |
| |
'config.ProviderOf(storage.IDataManager,class)'. |
| |
|
| |
- You can now register utilities that are keyed by the combination of an |
| |
interface and one or more classes, using 'config.ProviderOf(iface,*classes)' |
| |
as a configuration key. Providers are registered under an '(iface,klass)' |
| |
tuple for each specified class, and looked up using the MRO order of the |
| |
class specified for lookup. In other words, searching for a provider will |
| |
find a provider for the requested class, or one of its base classes, with |
| |
precedence given to the more-specific provider. This is primarily intended |
| |
for services like data managers and Specialists. |
| |
|
| |
- It's now possible to extend .ini file parsing with custom section types, |
| |
and PEAK defines its own built-in section types using this extension |
| |
mechanism. Custom section types must include at least one space, (e.g. |
| |
'[My Section]') or they will be treated as a plain property name. |
| |
See the 'peak.config.iniFile.sectionParsers' section in 'peak.ini' for |
| |
more details, along with the 'config.ISettingParser' and 'config.IIniParser' |
| |
interfaces. |
| |
|
| |
- When creating a 'PropertyName()', it's now possible to force conversion of |
| |
invalid characters to '_', using the 'PropertyName.fromString()' |
| |
constructor. (Note that the input must be a plain-ASCII string.) Unless |
| |
you request that wildcards ('?' and '*') be kept, they will also be |
| |
converted to '_' characters. This can be convenient for converting things |
| |
like filenames or text that might contain spaces, to property names. |
| |
|
| |
- It's now possible to declare an attribute as offering a wildcard property; |
| |
such lookups now follow the same rules as other wildcard property lookups. |
| |
The 'config.IConfigKey' interface has been changed to cleanly support |
| |
implied keys at both registration and lookup time, so you can implement |
| |
your own key types that work the way interfaces or property names do for |
| |
configuration lookups. |
| |
|
| |
- The 'EigenRegistry' class has been moved from 'peak.util.EigenData' to |
| |
'peak.config.registries', as it hasn't really been useful outside PEAK for |
| |
a while now. |
| |
|
| |
- .ini files now support "smart property" objects ('config.ISmartProperty'). |
| |
If a property rule defined in an .ini file evaluates at runtime to an object |
| |
that implements 'ISmartProperty', the object will be given a chance to |
| |
compute a value for the property, in place of being used itself. This helps |
| |
to simplify definition of complex property rules in .ini files, by allowing |
| |
the use of helper classes. Also, 'naming.LinkRef' and 'naming.Reference' |
| |
(indirectly) support this interface, so you can now use them in .ini files |
| |
to refer to an object via the naming system. (Previously, 'naming.LinkRef' |
| |
wouldn't do the right thing unless the property was looked up via a |
| |
'config:' URL, and 'naming.Reference' didn't exist.) |
| |
|
| |
- 'peak.util.imports.whenImported()' can now be used even when the specified |
| |
module has already been loaded. |
| |
|
| |
- The naming system no longer has 'objectFactories' and 'stateFactories' as |
| |
utilities; they have been replaced with new mechanisms involving adaptation. |
| |
Previously, addresses had a 'retrieve()' method that could be used to |
| |
retrieve the object defined by the address. Now, to retrieve an object for |
| |
an address, you must either define a context that processes the address, or |
| |
the address must have a 'defaultFactory' attribute, which provides a name |
| |
to be imported to get an 'IObjectFactory' that can construct the referenced |
| |
object. (This is simpler than it sounds; for URLs that reference |
| |
ManagedConnections, for example, all you need to do is provide the fully |
| |
qualified name of the connection class.) |
| |
|
| |
Meanwhile, writable naming contexts must have a 'serializationProtocol' |
| |
attribute, specifying what interface an object should be adapted to before |
| |
attempting to store it in that context. |
| |
|
| The naming system no longer processes the 'creationName' keyword argument; |
The naming system no longer processes the 'creationName' keyword argument; |
| this is now considered the sole responsibility of 'peak.binding'. The |
this is now considered the sole responsibility of 'peak.binding'. The |
| just not available via naming system APIs, and naming contexts no longer |
just not available via naming system APIs, and naming contexts no longer |
| have to deal with it. |
have to deal with it. |
| |
|
| |
The naming system base classes no longer use 'attrs' as an input parameter |
| |
or return value. If you've subclassed anything from 'peak.naming.contexts', |
| |
note that your '_get()' methods should now just return the lookup value, |
| |
rather than a 'state,attrs' tuple. For most naming contexts, this just |
| |
means you should change 'return foo, None' statements to just 'return foo'. |
| |
|
| |
- Property definition rules in an .ini file can now refer to 'rulePrefix' and |
| |
'ruleSuffix' variables. 'rulePrefix' is a '.'-terminated string, |
| |
representing the name the rule was defined with. For example, if the |
| |
rule was defined for '"foo.bar.*"', then 'rulePrefix' will be '"foo.bar."'. |
| |
The 'ruleSuffix' will be the portion of the 'propertyName' that follows |
| |
'rulePrefix'. So, if looking up property '"foo.bar.baz"', then the |
| |
'"foo.bar.*"' rule will execute with a 'ruleSuffix' of '"baz"'. This should |
| |
make it easier to work with hierarchical property namespaces. |
| |
|
| |
- Added simple example scripts and small applications in the 'examples' |
| |
directory. |
| |
|
| |
- There is a new command-line namespace introspection tool, 'n2', which |
| |
can be accessed by running 'peak n2'. Type 'peak n2 -h' for help. |
| |
|
| |
- The PEAK_CONFIG environment variable can now list multiple files, separated |
| |
by the platform's 'os.pathsep' (e.g. ':' on Unix, ';' on Windows). |
| |
|
| |
- It's no longer necessary to provide a '_defaultState()' implementation |
| |
for an EntityDM: a default implementation is now supplied. |
| |
|
| |
- Added automatic installation of 'datetime' package for Python < 2.3. |
| |
|
| |
- CGI support has been moved from 'peak.running.zpublish' into |
| |
'peak.running.commands' (for "raw" CGI/FastCGI) and 'peak.web' (for the |
| |
PEAK high-level publishing framework). You can use 'peak CGI someName' to |
| |
adapt 'someName' to a 'running.IRerunnableCGI' and run it as a CGI/FastCGI. |
| |
|
| |
- There is now a 'peak.security' package, available from 'peak.api' as |
| |
'security'. It provides permission management functions: you can define |
| |
abstract permissions by subclassing 'security.Permission', then create |
| |
permission checking rules by subclassing 'security.RuleSet', and declare |
| |
the permissions needed to access attributes of a class with |
| |
'security.allow()'. The test suite demonstrates a complex application |
| |
ruleset with dynamic, data-driven permissions. |
| |
|
| |
- There is now an interface for "Active Descriptors": |
| |
'binding.IActiveDescriptor'. 'peak.binding' now uses this interface to |
| |
identify active descriptors, so you can now create your own. (Previously, |
| |
'peak.binding' used 'isinstance()' to detect active descriptors.) |
| |
|
| - REMOVED 'naming.ParsedURL'; it was deprecated as of 0.5 alpha 2. |
- REMOVED 'naming.ParsedURL'; it was deprecated as of 0.5 alpha 2. |
| |
|
| - The 'provides' keyword argument to various 'peak.binding' APIs has been |
- The 'provides' keyword argument to various 'peak.binding' APIs has been |
| words, ordinary attributes of a component do not receive "suggested parent" |
words, ordinary attributes of a component do not receive "suggested parent" |
| notices, even when set via constructor keyword arguments. If you want an |
notices, even when set via constructor keyword arguments. If you want an |
| attribute to do this, you must define the attribute with the binding API; |
attribute to do this, you must define the attribute with the binding API; |
| e.g. via 'requireBinding()' or 'binding.Constant()'. |
e.g. via 'requireBinding()' or 'binding.Constant()'. If you do *not* want |
| |
a binding to suggest a parent component, use 'suggestParent=False' in the |
| |
binding definition. |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
Corrected Problems |
| |
|
| |
- The logging system would raise an error if a log message with no arguments |
| |
contained a '%' sign. |
| |
|
| |
- There was a typo in peak.naming.arithmetic that caused homogeneous non-URL |
| |
name subtraction to fail. |
| |
|
| |
- The default reactor supplied in 'peak.running.scheduler' would consume |
| |
CPU continuously if it was waiting for I/O and no tasks were scheduled. |
| |
|
| |
- The 'peak.util.imports.whenImported' function didn't work. |
| |
|
| |
|
| |
|
Diff of /PEAK/CHANGES.txt
Parent Directory
| 
Revision Log