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package OEF::Why::Queue; |
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|
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|
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=pod |
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|
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- computing convenience from windows perspective/view[point]: |
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- base level: |
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- gnu -> cygwin |
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- user-level: |
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- two hotsync-buttons: |
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- synchronize files with others: |
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RsyncHere|RsyncThere -> rsync -> cygwin -> SSH-client-library -> (SSH-daemon -> [cygwin] -> remote-filesystem) |
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- synchronize addresses with others: |
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Outlook -> OLE -> outlook2ldap -> Net::LDAP[S] -> (LDAP-daemon -> (LDAP-daemon-storage-impl.: dbm|proxy|mysql?) -> remote-filesystem) |
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- various "init"-scripts: |
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- rsync: like the rsync.conf-preparation from ilo.de (it's a .bat) |
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- (vs.) other ssh-keygen-automation-scripts |
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- windows-settings (explorer, internet explorer) |
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- office (ms word, ms excel) |
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- unattended.sourceforge.net |
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- ideas (for the XyzHere-series) |
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- for the Internet Explorer: "mail/post link (including top-page) here" (to preconfigured|selected target) |
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|
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- use Tom or Pixie for live-object-passivation? |
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- the current attempt is going into the Tom-direction (Data::Storage::Handler::Tom, OEF::Component::Task) |
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|
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- have Data::Map load its mappings from (e.g.): |
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- a csv-file |
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- a ldap-dn |
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|
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- first components for an "OpenAccess": |
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- schema-editor (based on Tangram::Relational::Schema) |
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- relationship-/association-editor (based on Tangram::Relational::Schema) |
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- im-/export - metadata-editor (based on Data::Transfer::Sync) |
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- task-viewer for Tasks: |
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- deploy-/retreat schema |
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- run im-/export |
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|
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- integrate Torus (outlook2ldap) with Data::Transfer::Sync |
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|
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- fully persist native perl objects to be able to a) suspend processing, b) transfer the object to another process's scope (memory) and c) resume processing |
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- Data::Dumper? no, that's just for data |
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- Pixie? no, just Perl 5.8.0 |
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- FreezeThaw - converting Perl structures to strings and back? hmm, seems to be for data only |
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- Storable? |
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- Memoize? no, just caches function return values (trade space for time) ("Automatically cache results of functions") |
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- Attribute::Memoize? no, this is just an attribute-style interface to Memoize |
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- TOM? |
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- IPC::Cache - a perl module that implements an object storage space where data is persisted across process boundaries??? |
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... seems to be for data-persistence, also ;( |
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- Aspect? hmmm, maybe ..... |
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|
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- OQL on top of Tangram::QueryObject??? |
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|
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- new perl modules: |
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Data::Filter |
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Regexp::Group |
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Getopt::Simple |
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Date::Merge |
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|
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- take care to declare your Plugin-modules as 'mixins' to BizWorks::Process |
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|
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- take care to specify BizWorks::Process-modules correctly |
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(including the full-name to the perl-namespace in the 'package'-declaration at the top of each file) |
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|
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|
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~~~ 3 |
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|
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- refactor use of class 'SystemEvent' |
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- maybe rename to show its scope already in classname (e.g. 'OefEvent') |
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- 1. generic inject on schema-level (like already successfully done with guid) |
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- auto-select of correct database at wiring-time (addLogDispatchHandler) |
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|
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- module-refactoring & namespace garbage collection: |
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+ refactored mechanism to use sub-modules inside the BizWorks::Process-namespace (anchorless) |
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- refactor BizWorks::Process to be anchorless itself |
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- spread new loading-mechanism over already used scripts and integrate to API to be able to do some kind of ... |
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... "remote component loading" (use in admin panel!) ("admin panel"=admin-area/page/site/oberfläche/bereich? -- !) |
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- refactor parts of BizWorks to OEF? (OEF::Component, OEF::Process) again, think about looking at CPAN's PApp (more in detail!) here |
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- refactor files in etc/ to be compliant to some - not yet developed (tbd!) - kind of configuration-metabase-structure |
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---> look at some already investigated modules from CPAN (Meta::XYZ???) |
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- refactor internal structure of files in doc/ to be html-renderable. use pod? (just with the new ones starting from 0.03) |
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|
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- use the session (backend->frontend) described below also to propagate error-messages from back- to frontend |
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--> each frontend uses one remote-/backend-session |
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---> restricted access! (tbd) |
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--> each admin(-area) uses one remote-/backend-session |
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---> full access! |
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|
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- document ids (identifiers) used: |
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- oid: object id (created by the innards of Tangram) |
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- guid: global id (created by a hook on object-insertion inside Tangram::Storage::_insert) |
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- serial: hash built from the content of the object (payload) via (e.g.) Digest::MD5 identifying it somehow...? |
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- sid: session id (created for _each_ object per session inside BizWorks::API::Session::_useobject ... |
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... and also gets stored there (instead of the others in this list which come along with the object itself.) |
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|
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- about: global identifiers |
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- if you're designing a fully distributed (global) system it's important that your objects have assigned some kind |
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of "global identifier" (e.g. generated from Data::UUID or similar) when used across possibly disconnected systems. |
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--> each disconnection must/may/can be assumed as a "redeploy" |
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(an operation which invalidates e.g. all oids and/or breaks all relationships (or even more!)) |
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- so relying on per-deployment identifiers (oids) from one of n systems will break your neck certainly :-) |
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- how to implement this? |
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- implement & use session-based mechanisms! (compare ASP/php sessions) |
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- assure you have full session-based-communcation between _all_ layers ;-) |
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.... else communication using identifiers will break at this very layer |
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- provide a guid -> <new-id-created-representing-the-master-guid> - mapping for each session |
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- integrate these new mechanisms as new layer between the backend and frontend |
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--> this will give you multiple frontends talking to the backend with their own identifiers! (and probably much more....) |
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- use this stuff to enhance infrastructure at system-setup/redeploy-/take-up/down-level: |
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- here we could apply (more or less) generic rules in the process-flow: |
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- flush session-metadata (guid->sid - mapping) ... |
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- ... |
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- this gives us |
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- possibility of having backend-db-redeploys transparent for the rest of the system |
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- possibility to drive "older" frontends (because we already have the mapping to the old identifiers) .... |
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... just introduce a "VERSION" to actually measure age! |
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|
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- about: data |
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verbs: |
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pattern matching, filtering, scanning, searching, reading, writing, mungling, munging, transforming, |
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translating, migrating, finding, replacing, grep, stepping, viewing, reporting, including, feeding, |
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syncing, encapsulating, sending, transmitting, recieving, serializing, unserializing, mapping, meta, merging, |
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looking up, indexing, sharing, distributing, centralizing, backing up, restoring, comparing, diffing, matrix manipulation, |
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math manipulation, visualizing, filtering, iterating through, traversing, calculating, accumulating, freezing, processing, |
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routing, transferring, converting, loading, saving, storing, activating, archiving |
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nouns: |
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transitioning, set, structure, object, file, database, memory, filesystem |
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combined nouns: |
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--> combine the ones above |
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adjectives: |
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nested, flat, instantiated, raw, real, test, production, |
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----> puzzle all by-random ;-) |
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|
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- what's that? |
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- why Perl? |
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- hate writing too much code? |
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- why Tangram and Class::Tangram? |
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- hate writing sql? |
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- hate writing constructors? |
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- these are the most simple reasons from a RAD perspective, |
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(OEF) should give you much more, please read on... (and otherwhere) |
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|
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- PApp::Storable 2.04 - ;-) try to interconnect with Tangram 2.04..... |
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|
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- Data::Filter ... |
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- ... utilizing Regexp::Group |
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|
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- _don't_ start OEF!!! try to use PApp!!! (+POE, +P5EE) |
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---> write components for these (and maybe try to tie them together in a convenient way) |
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---> like already done with Data::Storage |
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---> to _really_ start building higher level components for/with them (for real/bigger/distributed applications) |
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---> "OpenDavid", "OpenAccess", "OpenExchange" |
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|
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- about: a database: (+rdbms, +odbms) |
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- basic actions (rdbms) |
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- holding |
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- storing and retrieving by identifier |
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- querying |
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- features (oo-style) |
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- orm (object relational mapper: maps oo-object-properties to table-fields) |
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- schema (maps oo-classes to oo-objects) |
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- relations |
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- constraints |
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- object inheritance |
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- highlevel services |
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- transactions |
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- stored procedures, views |
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- replication (master -> slave) |
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|
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- refactoring: use PerlIO::via to get _real_ layers (in this case for the "per-file basis")? |
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|
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~~~ 2 |
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|
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|
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|
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- refactor perl/libs/misc |
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|
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- refactor perl/libs/libp.pm into Data::Conversion:: and/or Data:: |
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|
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~~~ 1 |
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|
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- Tangram::Storage/Data::UUID: |
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- rewrite _full_ functionality of Data::UUID to a pure perl version Data::UUID::PP or Data::UUID::PurePerl |
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+ Data::UUID::PurePerl which uses Digest::MD5 with a random payload internally |
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|
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- OEF::Component::Transfer should get commands issued to |
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tell.pl transfer .... |
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|
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- documentation/self-documentation: |
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- doc/meta (for self-documenting purposes, place sloccounts and cvs-graphs/commitinfo/commitgraph) here |
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- doc/tracker (bug-, feature- and issue-tracking-system) - interface with cvs (file based use) somehow..... |
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|
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- cmd.pl/command.pl --> tell.pl |
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|
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- core-services to be abstracted out as components: |
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- lowlevel |
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- object manipulation (query, load, edit, save) |
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- data manipulation (transformation, conversion, encoding, encapsulation) |
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- communication services (rpc-xml, soap, file-system-based (pipe, socket, dir/file-poll/-watch), other rpc-mechs, net/raw (tcp, udp, ...)) |
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- highlevel (utilizing above components and cross-utilizing themselves) |
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- reporting facility |
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- logging |
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- xyz |
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- processing facility (here is the actual code!) |
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- routing facility |
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(- view generation) |
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|
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- implement command-abstraction: |
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- use router/hop - mechanism |
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- declare commands in etc/BizWorks/Commands.pm, (or insert them to db and enhance router/hop-mechanism with "nodes") - map them to: |
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- description |
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- argument-container (hash containing passed-in arguments: this should be processed via some kinda "request"-object) |
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- at the end - a "response"-object should be the result of the command-routing process |
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- given this - it should be as easy to switch between synchronous/asynchronous-processing on command-level easily (speaking "on-the-fly") |
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- rewire this to a new script: cmd.pl/command.pl |
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|
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- add diff/merge on per-node-basis (inside!) for Data::Transfer::Sync as an alternative to md5-checksum-hashing |
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|
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- write small tool to scan source-code for various often-used-patterns: |
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- 1st run: TODO, HACK, REVIEW |
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- 2nd run: lowercase versions of above listed items |
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- report text/code after that (make context-width (before, after) configurable) |
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|
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- backend-sync: detect changes to underlying file when using DBD::CSV when syncing - will get destroyed otherwise ;) |
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|
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- central Data::UUID authority (two steps) |
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- move all code to a central location (BizWorks::Helper::UUID) |
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- central GUID-server/authority (like a ticket-authority) (RPC around BizWorks::Helper::UUID, etc.) |
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|
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- integrate a mechanism to disable new-guid-assignment when calling Tangram::Storage::_insert |
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- purpose: option for db_backup.pl dbkey=backend --action=restore |
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|
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- introduce generic "advanced.error.propagation"-mechanism for functions in Data::Storage::Handler to |
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let them return more verbose error-messages if any errors actually occour |
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- don't just return and don't pass back verbose strings in return values directly! |
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=> pass back response-hash = { |
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errcode => 5, |
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errmsg => '<verbose error message>', |
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ok => 0, |
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} |
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- go oo via Event? |
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- go exception-style via try { ... } catch { ... }? |
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|
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- ideas to abstract the rotation-mechanism: (feed.pl --action=rotate) |
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- rotate.by.flag (is what we have now implemented in a hardwired fashion (backend_import.pl)) |
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- rotate.by.date (give date to rotate by ....) |
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|
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- an abstract/third language to write validation processes in? |
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- intention: include this code (the identical) at _two_ system-nodes independent of used language (language-binding needed!) (python, javascript?) |
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|
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- libraries/modules: currency and/or datetime calculation for php and/or perl!? |
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- fields of "datetime": date, time, timezone |
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- fields of "currency": from -> to, setBase, getByCountry, (setBaseByCountry???) |
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- perl: |
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- Date::Manip |
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- php: |
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- PEAR/Date |
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- PEAR/Date/TimeZone??? |
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|
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- frontend-sync - new concept: |
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- sync: two features - not more! |
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1. use guids for identification of nodes (wipe out usage of tangram-oid!!!: now the synchronization-layer is independent from tangram) |
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2. generic hook for im-/exports: wrap xml im-/export around that? |
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- maybe: don't do that above, but just _add_ the guid to the field-map of each node while syncing (generic "introduce"/"inject"-mechanism!) |
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|
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- OEF: docu: declared databases can be used similar to / compared to mountpoints known from e.g. the unix filesystem. |
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$process->{bizWorks}->{<database-key>}->storageMethod |
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|
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- OEF: look at pef@sourceforge!!! |
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- pef = perl enterprise framework |
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- contact authors!!!??? |
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|
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- describe how to start write (new) code for/with OEF |
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- start with simple .pl-script |
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- encapsulate code inside the very same .pl-file into a special compartment to get it accessible from core OEF |
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- maybe provide an external tool to automatically do this job? (e.g. cat example.pl | oef.pl --refactor=script-compartment --outfile=example_c.pl) |
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- include to Config.pm!? |
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- move code to own process-namespace (e.g. "BizWorks") |
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- maybe provide an external tool to automatically do this job? (e.g. cat example.pl | oef.pl --refactor=process --outfile=BizWorks/) |
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|
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- attempt to start "OpenAccess" as a MS Access clone????? using... |
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- Data:: |
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- OEF:: |
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- Perl::Tk and/or mod_perl/Oak:: WebXyz:: |
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- POE |
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- P5EE |
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- some more code...... ;-) |
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|
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- OEF::Scripting |
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- binding for scripting via perl/python/javascript/php? (even an emulated/open vbscript???) |
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|
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- OEF/FAQ.pod |
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- i can't find any getter/setter-methods in the source - where are they? |
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-> don't worry - they are there - but hidden away from Tangram / Class::Tangram - please read their documentation to get an insight into the mechanisms used in the layers using tangram for storage |
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- there are/will be some other "real"-getter/setter-methods or OEF will provide/wrap other class-generators as adapted/bridged handlers |
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e.g. Tie::SecureHash, Class::Contract, Class::Xyz, ..... (try to integrate/move utilization of Class::Tangram into this (new) layer as well....) |
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|
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- introduce mechanism to provide something like a "dynamic reversed mixin-inheritance" |
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(from the view of perl's mixin-module available from CPAN) |
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- purpose: |
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- don't mixin plugin-subobject's to a common concrete parent-container-objects, but .... |
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- .... dynamically (via eval) mixin an abstract parent-container-object into an arbitrary instantiated plugin-object's namespace |
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- this (maybe) will get you shared resources between applications and plugins but namespace-seperated methods on plugin-level, but .... |
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- .... still lets you have common methods available to all plugins declared in the abstract parent-container-object |
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(needed e.g. for 'load/unload' itself....) |
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=> hierarchical plugin namespace at runtime - sharing resources, common methods and (maybe) other preconfigured (helper-)objects |
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- another idea/enhancement on top of this: dynamically mixin arbitrary/given package into _current_ __PACKAGE__ |
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- another idea/enhancement parallel to this (maybe better/easier to use/implement/merge-with-POE?): |
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- provide each plugin with a meta-data-storage-container (kinda _SESSION/_STACK) which can/will get flushed on destroy, but ... |
| 311 |
... can also be made persistent on demand/request, or ... |
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... sent to a remote location: would process-migration be possible with this??? |
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_start_proc(local) |
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_pause_proc(local) |
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_migrate_proc(local, remote) |
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_migrate_proc_meta(local, remote) |
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_migrate_proc_stack(local, remote) |
| 318 |
_resume_proc(remote) |
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while (status = _query_proc(remote)) { |
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print status |
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last if status.ready |
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last if status.error |
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} |
| 324 |
|
| 325 |
- write code for (automatic )documentation-purposes: |
| 326 |
- perl-filter to (hard) dump all _values_ sub- input- and output- variables |
| 327 |
- perl-filter to (hard) extract sub-name and attributes |
| 328 |
- perl-filter to (guess) all _names_ of a) passed-in (request)-variables (arguments, options) and b) passed-back (response-)variables ((processing-)results, boolesch or arbitraryly encoded status) |
| 329 |
- perl-filter to (hard) extract additional in-/out-metadata ... how? already proposed somewhere - search linkdb |
| 330 |
|
| 331 |
- guid should be generated in a core module in the Data::-namespace to be accessible by both Data::Transfer::Sync and BizWorks::xyz |
| 332 |
-> mkGuid |
| 333 |
-> Data::Storage::Sync - metadata: add ->{isGuidProvider}??? |
| 334 |
|
| 335 |
- Data::Transform::Deep: |
| 336 |
- rename 'expand' to 'deep_expand' |
| 337 |
- create new sub 'merge' (from 'hash2object_traverse_mixin'), use from 'hash2object' |
| 338 |
- use IterArray and/or IterHash??? |
| 339 |
|
| 340 |
- include main namespace (BizWorks, BizWorks::Process) in Config.pm somehow |
| 341 |
----> refactor code to provide declarative boot/startup |
| 342 |
=> SYNOPSIS: |
| 343 |
my $app = OEF::Application->new( |
| 344 |
config => $config, |
| 345 |
namespaces => { |
| 346 |
'BizWorks' => { |
| 347 |
}, |
| 348 |
databases => [qw()], |
| 349 |
packages => [qw()], |
| 350 |
); |
| 351 |
my $app = OEF::Application->new(package => 'BizWorks'); |
| 352 |
my $app = OEF::Application->new(script => 'feed.pl'); |
| 353 |
|
| 354 |
$app->boot(); |
| 355 |
$app->run(); |
| 356 |
|
| 357 |
propagation of config / further boot is done _after_ parsing the configuration |
| 358 |
e.g. booting BizWorks is just declard in there - it will not happen "by default" any more |
| 359 |
=> the door maybe is open now to load plugins from/to other namespaces/scopes besides BizWorks |
| 360 |
|
| 361 |
- generic "makeSerial"-function (BizWorks::Process::Common) to make serials from some concrete objects |
| 362 |
- rule: capitalize first letter of object-/class-name - append digest of object-payload (patched Data::Dumper) |
| 363 |
|
| 364 |
- patch Data::Dumper to respect e.g. Set::Object |
| 365 |
|
| 366 |
- synchronization: don't delete all nodes when running "export": just delete touched ones and show this via print "r" if $self->{verbose} |
| 367 |
|
| 368 |
- transparently send tangram-objects via RPC::XML??? |
| 369 |
|
| 370 |
- introduce TTL and manual-purge-mechanism for HttpProxy |
| 371 |
|
| 372 |
- introduce OEF, OEF::Process in nfo/ (Open Enterprise Framework) |
| 373 |
- the OEF-namespace: |
| 374 |
- OEF::Process (BizWorks::Process) |
| 375 |
- OEF::Script (xyz.pl, BizWorks::RunMe) |
| 376 |
- OEF::Core (BizWorks, BizWorks::Boot) |
| 377 |
- OEF::Request and OEF::Response? asynchronous? |
| 378 |
- OEF::Application (BizWorks) |
| 379 |
- OEF::Engine? |
| 380 |
- DOEPF? (Distributed Open Enterprise Perl Framework)? hmmm... no what about PHP? Python? |
| 381 |
|
| 382 |
- what about code in BizWorks::Process::Core??? maybe use Data::Storage::Handler::Tangram::sendQuery |
| 383 |
|
| 384 |
- introduce mechanism for developer-machines to detect and propagate schema-changes to e.g. frontend-databases (configure this option/feature in Config.pm) |
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|
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|
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$Id: Queue.pod,v 1.4 2003/01/28 10:07:28 joko Exp $ |
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|
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=cut |
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|
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1; |
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__END__ |
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