3 zoom: returns Explain records for database IR-Explain---1. The
4 target profile records are converted to Explain records via XSLT.
6 session_shared: make error recovery configurable. Whether a search
7 is restarted on errors or not, is configurable by attribute "restart"
8 in element "resultset" in configuration.
10 session_shared: only relay init for first request. session_shared, for
11 each backend class, now only relays first init request (rather than all).
12 The module only needs to save init response info once. This avoids the
13 need to check for session max.
17 zoom: fix memory leaks.
19 session_shared: maximum number of sessons is configurable. Default
20 value is 100. Result-sets for backends without named result sets are
21 only re-used if databases is identical for a search. This is under the
22 assumption that performance may suffer for those backends when
23 changing the database for each search.
25 multi: combines diagnostics from all backends. All diagnostics from
26 backends are combined into multiple non-surrogate diagnostics; rather
27 than just one diagnostic from first backend.
31 zoom: relay realm to cproxy parameter file.
33 Configuration: Allow filter collection element inside route. This
34 makes it possible to include multiple filters at once.
36 zoom: nocproxy also disables urlRecipe.
40 zoom: return diagnostic if CQL sortby conv fails. Diagnostic Bib-1 214
41 "Illegal sort relation" is returned. Gets translated to SRU diagnostic
42 90: "Unsupported direction value".
44 zoom: honor database argument nocproxy. This disables creating a content
45 connector session (for non-CF targets, usually) and also relays nocproxy
46 as database argument to a CF target.
50 zoom: Multiple proxy hosts may be given for proxy rich database
51 parameter. List is comma separated.
53 http_file: decodes URI paths properly. Does not return 404: not found
54 if no prefix are matches. Instead packages are passed on.
58 zoom: content-{user,password,proxy} are passed on to content proxy
59 system and takes precedence over user,password,proxy .
61 sru_z3950: SRU extra argument x-log-enable=1 enables a search response
62 with a log element including log material from children filters. At
63 this point, only the zoom filter uses this log facility. It will
64 eventually be used by other filters as well. In particular it might be
65 useful for this feature to track all filters in used during a search.
67 zoom: for x-log-enable=1, APDUs sent by ZOOM C, records as received
68 and queries as they are manipulated are logged.
70 zoom: extend addinfo with native diagnostics. Diagnostics as received
71 by ZOOM C are put into addinfo - including ZOOM, HTTP, SRU and Bib-1
72 diagnostics. This indicates both a backend diagnostic and the original
75 zoom: default urlRecipe value is ${md-electronic-url}
77 zoom: target profile setting sruVersion is recognized.
81 zoom: log target profile record fetched (AKA Torus).
85 Change target profile parameter CfSubDb to CfSubDB.
89 zoom: bug fix: realm was relayed to CF targets by mistake (realm only
90 makes sense to the zoom module itself).
94 zoom: realm may be given as part of database.
98 Fix Origin class assigment method; was removd by mistake in 1.3.12.
100 --- 1.3.12 2011/10/26
102 zoom: database args x-name=value are passed through to backend database.
104 SRU filter: user may specify session ID that is passed to log entries
105 that follows. It is specified by using x-session-id in the SRU arguments.
107 zoom: fix null pointer reference which would occur for bad url parameter
108 inside "torus" or if url was not given.
110 --- 1.3.11 2011/09/09
111 Fix bug in filter session_shared where sessions would not expire
112 properly (session ttl). This in turn could make the target close the
113 connection before expected and session_shared would return diagnostic
114 2: system temporarily available.
116 --- 1.3.10 2011/09/09
118 zoom: new target profile setting: sortmap_field. If sortmap_field is given
119 the field is mapped to the value for the sortmap. Values not matching
120 sortmap_field are passed verbatim.
122 zoom: new target profile setting: sortStrategy. One of: "z3950", "type7",
123 "cql", "sru11" or "embed". The "embed" chooses type-7 or CQL sortby
124 depending on whether RPN or CQL is actually sent to the target.
128 zoom: urlRecipe result is stored in <pz:metadata type="generated-url">.
130 zoom: For content proxy authentication is stored in param name
131 "auth", instead of "authentication".
135 zoom: relay schema in SRU mode. Previously recordSchema was not affected
140 zoom: new target profile element literalTransform that holds XSLT
141 (encoded as string) for target. Only if present and non-zero length it is
142 considered present. This takes precedence over transform.
144 Don't rely on trang anymore for Git checkout builds. Configuration in etc
145 will only be properly validated if trang is available. From now on only
146 relax NC files are bundled with the source dist.
148 Updates to check for Boost unit test (autoconf stuff). On MacOSX this
149 component was not detected when it should be.
153 z3950_client: mark non-surrogate diagnostics from backend.
155 zoom: a proxy may be specified for HTTP fetch of target profiles.
159 Honor piggyback. Makes some SRU targets behave that insist on
160 maximumRecords > 0, but also increases performance.
164 Fix dlpath in installed metaproxy.xml for RPM/Deb package. The
165 file was not update for libdir/metaproxy4 in version 1.3.2.
169 Change location of Metaproxy modules from libdir/metaproxy to
170 libdir/metaproxy4. Directory libdir/metaproxy is also owned by
171 libmetaproxy3 and, thus, should not be used by libmetaproxy4.
173 New facility to dump APDUs from zoom filter. Enabled by
174 <log apdu="true"/> in the zoom filter configuation.
176 zoom filter bug fix: SRU diagnostics received from backend was
177 not properly converted to Bib-1 diagnostics.
179 Package metaproxy depends on libmetaproxy4, same version.
183 zoom: fix a bug WRT passing authentication parameters to backends.
187 Fixes for windows Makefile.
189 --- 1.2.10 2011/07/25
191 Change major version of metaproxy library from 3 to 4. This in turn
192 makes new package names for Debian and RPM.
196 zoom: enable marc-8 encoding by default for usmarc and opac (in pz2
199 zoom: configurable element sets for record transforms.
201 zoom: the target profile based transform is specified by element_transform
202 in element torus of of the ZOOM filter configuration ; default value
203 is "pz2". Target profile based retrieval is specified by element_raw
204 in configuration. It will perform same steps, but omit the XSL transform.
205 Default value is "raw".
207 zoom: element set is omitted if not set in profile. But only if pz2
208 transform is in effect. Previously the default element set was to "F".
210 zoom: For non-CF targets database arguments are parsed. User may supply
211 db,user=myuser&password=mypass for non-CF targets. These values override
212 what's given the authentication from the target profile.
214 session_shared: fix reference to freed memory. Would occur if a search
215 response had non-surrogate diagnostics.
219 Route may be given for each port in frontend_net.
223 Documentation for zoom filter. Local target profiles may be specified.
225 Fixes for zoom filter.
229 First version with zoom filter.
233 Filter z3950_client may be configured to always send a close APDU
234 to backend target when connection/session is closed. This will only
235 happen if close APDU is not already sent. Enabled by configuration
236 for z3950_client (force_close).
238 Filter virt_db and multi: relay close APDU.
240 Filter virt_db and multi: relay init size parameters
241 preferredMessageSize and maximumRecordSize.
243 Filter sru_z3950: increase init sz parameters from 1MB to 10 MB.
247 RPM package for Metaproxy works for both SLES11 and Centos 5.5.
249 metaproxy-config: exec_prefix, libdir, includedir. Use these variables
250 as determined by configure.
252 RPM: Release includes 'indexdata' name. Use indexdata in release name so
253 this package can be distinguished from other vendors.
257 Fix filter multi: relay idAuthentication parameters.
261 Add metaproxy-config for returning compiler flags, libraries.
265 Fix --with-boost=PREFIX .
269 session_shared: fix use of maintenance thread.
271 Introduce 'start' method for filters and routers. It gets called after
272 configure and after fork, but before processing. This changes API -
273 from libmetaproxy2 to libmetaproxy3.
277 session_shared: ensure backend session is closed if init rejected
280 z3950_client: fix NULL ptr reference that could occur if two clients
281 connected concurrently and if max-sockets was in effect.
285 Fix bug 3497 - Metaproxy unstable while stopping.
287 Fix bug 3495 - SEGV in SRU filter.
291 Filter multi throws diagnostic 'Present Out of Range' when
292 appropriate - rather than returning 0 records.
294 Filter virt_db: fix bad result reuse. Could happen if a result
295 was overriden and a backend did not supported named result sets.
299 Filter log: category access logs diagnostics even if searchStatus
300 or presentStatus is 'success'.
304 The SRU to Z39.50 filter does repeated Z39.50 present requests
305 to fetch all records. Needed when a Z39.50 server returns partial
306 results (due to message size limits).
310 Metaproxy now kills all child processes that are spawned by
311 modules (in case of fork, exec).
315 Debian package now installs /etc/metaproxy/metaproxy.xml which
316 includes all XML files /etc/metaproxy/filters-enabled .
317 The include facility uses YAZ' yaz_xml_include_simple (YAZ 4.0.1).
321 Package based on YAZ version 4 and YAZ++ 1.2.0. It now includes a
322 development package to facilitate 3rd party Metaproxy modules.
324 --- 1.0.23 2010/01/04
326 Filter virt_db: Close backend filter session when Init rejected is received
327 from it (in which case it's not really closed yet). This will ensure we don't
328 run out of resources such as FDs in this case.
330 sru_z3950 filter: Accept any database (including those not listed).
332 --- 1.0.22 2009/12/03
334 Prepare for 64-bit YAZ. yazproxy will still work with YAZ++ 1.1.4 or
335 later which means YAZ 3.0.47 or later.
337 --- 1.0.20 2009/11/19
339 For filter virt_db, the database is a glob pattern and the virtual
340 database sections are consulted in the order given.
342 --- 1.0.19 2009/07/08
344 For filter multi, the target (for routing) may be given as a glob-pattern.
346 More documentation for filters virt_db and multi.
348 Update schema to allow for no database in sru_z3950 filter.
350 --- 1.0.18 2009/06/30
352 Added limit filter to put sleep (penalty) for heavy use.
354 Filter frontend_net may be configured to limit the number of new connections
355 from same IP to some value (connect-max).
357 Fixed the load_balance filter.
359 --- 1.0.17 2009/06/16
361 Fix path for metaproxy executable for Debian init.d script.
363 --- 1.0.16 2009/06/10
365 SRU to Z39.50 filter honors x-username and x-password. If only
366 x-username is given that translates to open authentication (Z39.50v2). If
367 both x-username and x-password is present that translates to idPass
368 authentication (Z39.50v3).
370 New facility to change current working directory (-w).
372 Update to upstream skeleton of init.d script. Should fix bug #2619.
374 Filter session_shared now caches records (used to only cache connections
377 Filter session_shared now invalidates a Z39.50 session if a server
378 returns -1 hits. This facility was also part of yazproxy and gets around
379 a bug in Voyager-based Z39.50 servers.
381 --- 1.0.15 2008/11/18
383 Fixed reference counting bug in Z39.50 client module (could cause SEGV).
385 --- 1.0.14 2008/06/09
387 Fixed the value of SRU record schema in searchRetrieve response. It was set
388 to a fixed value of "dc" before.
390 Serialize identical SRU requests. This is useful if HTTP client software
391 fires identical requests against metaproxy.
393 Allow Z39.50 target to be specified for SRU requests by using SRU extra
394 parameter x-target. Allows SRU to contact arbitrary Z39.50 targets and
395 avoid static configuration. This facility is handled by the sru_z3950 module
396 and the z3950_client module.
398 Allow maximum number of sockets to be used for a Z39.50 client by the
399 use of SRU extra parameter x-max-sockets. This facility is handled by the
400 sru_z3950 module and the z3950_client module.
402 --- 1.0.13.1 2008/02/29
404 Simplified check for Boost libraries.
406 --- 1.0.13 2008/02/29
408 First Debian package.
410 The sru_z9350 filter now recognizes SRU parameter z-target as being
411 a ZURL of the form host/database .
413 Mergetype may be specified for filter 'multi'.
415 --- 1.0.12 2007/09/19
417 Fixed problem in Makefile WRT library specifictions. This could produce
418 linker errors (when they should not happen).
420 Fixed bug #1341: MetaProxy returning different results. Problem was that
421 fix-up of record database did not normalize the database name.
423 Documentation updates for Windows compilation.
425 --- 1.0.11 2007/06/14
427 Fixed problem with logfile being truncated.
429 --- 1.0.10 2007/05/23
431 Fixed bug #1136: Access rights not enforced.
433 Extension for log module. The log category 'access' logs more details.
434 New category 'user-access' added which is simlar to 'access' but adds
435 the Z39.50 user as for all entries in a session.
439 Added support for configurable default/force target/vhost for module Z39.50
444 Implemented filter, session_shared, which optimizes usage of Z39.50
445 sessions and result sets.
447 New filter, record_transform, which converts MARC/XML records.
449 New filter, sru_z3950, which converts SRU to Z39.50 packages.
451 New filter, load_balance, in development.
453 New filter, zeerex_xplain.
455 XML framework for config files started.
457 Master RelaxNG Compact schema's are found in xml/schema/*.rnc,
458 RelaxNG XML schemas and XML Schema's are generated from RNC syntax.
459 XML config files are checked against RNG and XML Schema's.
461 XSLT transformation framework added in xml/xslt/*.xsl, consisting mainly of
462 LOC Marc21 stylesheets found at http://www.loc.gov/marcxml/xslt.
463 Added stylesheet explain2cqlpqftxt.xsl which transforms a standard SRU ZeeReX
464 explain record to YAZ CQL-to-PQF text config file.
468 Added 'timeout' setting for filter frontend_net which specifies the number
469 of seconds a session is idle before it is closed. Default timeout is
474 Database name in records returned set for virt_db/multi filters.
476 Filter session_shared now functional.
478 Log filter can be configured to write to a given file using 'filename'
479 element. Also information category can be specified with 'category'. If
480 filename is omitted, the log filter writes to stdout. See etc/config5.xml
485 Fixed compilation on Windows.
489 Added documentation for the hidenavailable option for the multi filter.
493 Fixed bug #573: Hide errors for individual servers. If the element
494 'hideunavailable' is given in the configuration, individual servers
495 being unavailable are hidden (unless all are unavailable).
497 Fixed bug #574: Database names are recognised case-sensitively.
499 Fixed bug #567: Fix up database name in Name-Plus-Record.
501 Fixed bug #568: Update win/makefile for VS 2005.
503 Fixed bug #569: Some options throws unknown exception.
507 More information about virtual hosts. The 'etc' directory is part of the
512 Build instructions for Windows. NMake makefile part of distribution tar.
518 Filters functional: auth_simple, backend_test, frontend_net, http_file,
519 log, multi, query_rewrite, template, virt_db, z3950_client.
521 Filters in development: session_shared.
523 Pseudo-filters: template, dl