3 Make RouterChain and RouterXML part of public API (libmetaproxy).
5 http_client: honor X-Metaproxy-Proxy as an alternative to
6 the "proxy" configuration. Allows proxy to be set per HTTP request.
8 sru_z3950: For SRU requests recognize x-client prefixes as a way
9 to ingest "database parameters".. The suffix of x-client- serves
10 as database argument name. Multiple may be given. For example:
11 http://path/db/?operation=searchRetrieve&x-client-user=a&x-client-password=b
12 is turned into Z39.50 database
17 New filter present_chunk. This filter allows splitting of present requests into smaller chunks.
19 New filter sd_remove, which replaces surrogate diagnostics with
20 SUTRS records. This filter tries to deal with clients that breaks
21 when receiving surrogate diagnostics.
23 new filter http_client. Same role as z3950_client, but just for
24 HTTP. Allows Metaproxy to operate as a HTTP proxy.
26 New filter http_rewrite1, which serves as purpose on how to rewrite
27 HTTP content with Metaproxy.
29 Use libboost-system if available, because newer versions of libboost-threads
30 requires libboost-system.
32 Allow frontend_net to serve SSL/HTTPS, because we can specify a server
37 zoom: Torus setting: authenticationMode which may hold values "basic"
42 configure: check for Libxslt support in YAZ and rely on definitions
43 from yaz-config, rather than doing own xslt/xml2 checks.
45 Allow timestamp format for log lines to be given with option -m
46 for metaproxy. Similar to yaz-ztest/GFS option -m.
48 Document log category 'line' for log filter.
50 Solr configuration example in etc/config-solr.xml
52 multi: do not mess with request package. For scan and search,
53 database-names were modified and the request package was left with
54 dangling pointers that caused a log filter to fail (request package
55 inspected after multi was invoked).
57 Documentation: fix id of metaproxy-config ref .
59 Documentation: update for USEMARCON support.
63 record_transform: allow OPACXML to OPAC conversion
65 zoom: document content-proxy
67 zoom: document db parm content-{user,password}, torus_url. Also
68 <torus auth_url="..> which makes zoom operate in authenticated mode
73 zoom: fix http://-check. SRU search broken in 1.3.51.
77 zoom: only append http:// for SRU if not already given . Makes it
78 possible to use https-URLs.
80 Use yazpp 1.4 or later due to new ABI.
82 frontend_net: allow max package size to be specified. Controlled by
83 attribute 'max_recv_bytes' of element 'port'.
87 For most generated diagnostics by filters, typically temporary
88 system error, augment addinfo message with filter name.
90 Add support for CentOS 6 packages.
92 sru_z3950: interpret Z39.50 diagnostics part of Init Response.
94 Add man page for metaproxy-config.
98 zoom: new config element passthru. This defines an element set that is
99 passed verbatim to the backend in pz2 mode.
101 auth_simple: allow both idPass and open auth. Also fix SEGV that could
104 --- 1.3.48 2012/10/08
106 z3950_client: fix string handling for init diagnostics in the case where
109 query_rewrite: no charset conversion for error queries. Avoid performing
110 charset conversion for query conversion errors. The resulting Type-1
111 query is invalid in this case.
113 --- 1.3.47 2012/10/04
115 For graceful stop (SIGUSR1), metaproxy will kill children processes.
117 Log when metaproxy is invoked in test mode (-t).
119 Log PID for each log message.
121 multi: combine both NSDs and multiple NSDs into one (diagnostics).
123 z3950_client: fixup multiple NSD's too. Like surrogate diagnostics,
124 a (backend=target) is appended for each diagnostic so that can be
125 determined the origin of error.
127 multi: hideerrors also in use for present response.
129 Solr example in zoom man page.
131 Fix typo in query_rewrite config example.
133 Log at least first non surrogate diagnostic. Instead of
134 "Z_Records_multipleNSD"
136 multi: Fix check for opt Records in present response. A SEGV could occur
137 if a target did not return records and no diagnostics.
139 --- 1.3.46 2012/09/24
141 Yet another fix for graceful stop.
143 --- 1.3.45 2012/09/12
145 sru_z3950: relay surrogate diagnostics.
147 --- 1.3.44 2012/09/10
149 zoom: Honor extraArgs, strip # in zurl.
151 multi: fix SEGV for scan. Reported by Rustam T. Usmanov.
153 zoom: url_recipe allow %{var[reg]} substitutions.
154 It's like ${var[reg]} but does URI component encoding as well.
156 --- 1.3.43 2012/08/22
158 RPM/Deb: require yazpp 1.3.2, because it fixes a missing close of
159 non-keepalive HTTP sessions.
161 http_file: allow zero size files (bug fix)
163 Fix zoom schema: auth_url is optional
165 --- 1.3.42 2012/08/20
167 zoom: fix un-init memory (could result in SEGV at session close)
169 frontend_net: handle X-Forwarded-For. This is stored in package.origin()
170 and may be used in filters as usual.
172 zoom: authentication via Torus lookup
173 Enabled by new configuration setting: auth_url . If this is defined,
174 the zoom module will contact Torus for auth/IP lookup and that will
175 define realm to be used in session.
177 --- 1.3.41 2012/08/10
179 virt_db: Fix database name - first character we removed by mistake.
180 Bug introduced in 1.3.40.
182 --- 1.3.40 2012/08/06
184 virt_db: Don't use "unix path" as database for Unix sockets.
186 --- 1.3.39 2012/08/02
188 z3950_client: Don't tamper with / in zurl - fixes problems
189 using Unix sockets for backends.
191 session_shared: fix integer overflow problem with hit count.
193 session_shared: avoid long usage of cached queries.
195 zoom: New database argument , torus_url to set URL of Torus
196 record to be fetched.
198 --- 1.3.38 2012/07/04
200 Fixes for 'metaproxy reload' for RPM/Debian packages.
202 zoom: Allow rpn2cql conversion to be augmented with a properties file.
203 Element rpn2cql can be specified per-target for the zoom filter.
205 log: New category "line" which is a single-line log message with
206 most important parts of a HTTP/Z39.50 request/response.
208 --- 1.3.37 2012/06/01
210 frontend_net: add facility to report live statistics about response
211 times and current thread usage. The report is an XML document
212 and is triggered for a specific URL path. This is set by <stat-req>
213 in the configuration of frontend_net. By default this report is
214 disabled (same as empty value for <stat-req>).
216 Fix reload problem in init.d script for RPM/Debian.
217 The '/etc/init.d/metaproxy reload' in some cases would stop but not
218 start metaproxy - effectively stopping the service.
220 Don't display start log message when config testing (-t).
222 zoom: avoid CCL message limit of 1K in ZOOM filter.
224 --- 1.3.36 2012/05/10
226 metaproxy init script reacts to reload which does graceful stop +
227 start and is used by logrorate script.
229 --- 1.3.35 2012/05/09
231 Fixes for Windows compilation.
233 Metaproxy daemon reacts to SIGUSR1 in which case it will leave
234 existing sessions running but terminate the monitor process that is
235 used in keepalive mode.
237 Change start log message to 'metaproxy start'. Was 'Metaproxy start'
238 before. Consistent with 'metaproxy stop' message.
240 zoom: document zoom's proxy_timeout
242 z3950_client: fixup addinfo for init response
244 virt_db: return other diagnostic if init is rejected. Diagnostic 236:
245 "Access to specified database denied" is returned, but only if init
246 response from backend does not carry diagnostics already.
248 multi: relays user info for first rejected target. The other-information
249 field for init response for first rejected target is in common init
250 response. This ensures that some backend init diagnostics are returned to
253 --- 1.3.34 2012/04/25
255 frontend_log: extend logging (when message is given in config).
257 --- 1.3.33 2012/04/25
259 zoom: Fix check for proxy. Use diagnostic 1074 for proxy failures.
261 --- 1.3.32 2012/04/24
263 sru_z3950 filter passes through incoming Z39.50 requests again. Was
264 not handled by mistake in Metaproxy versions 1.3.29, 1.3.30 and 1.3.31.
266 --- 1.3.31 2012/04/24
268 zoom: fixes for retry/proxy failover logic. More logging.
270 --- 1.3.30 2012/04/23
272 zoom: return addinfo="proxy failure" for proxy failures. This also
273 changes the scheme for dealing with proxies a bit. zoom now always
274 do proxy check, even if there's no failover. Fortunately, that's not
277 zoom: Init rejected wo diagnostics maps to Bib-1:1014.
278 Bib-1 1014, "Init/AC: Authentication System error", seems pretty
279 generic. We don't know why the init would fail; IP, user, block IP, etc.
280 sru_z3950 filter maps this to SRU diagnostic 3: "Authentication error".
282 zoom: guess if invalid SRU response was an auth failure
284 session_shared: disable session retry by default . Can be enabled by
285 restart="true" in resultset section.
287 --- 1.3.29 2012/04/18
289 zoom: may read cf-proxy's config settings.
290 This reduces manual configuration of the content proxy server host.
291 The ZOOM module will use the old style session.proxyhost if "server"
292 is given (deprecated) and use the new style proxyhost/session if
293 "config_file" is in use.
295 frontend_net: remove incoming requests that can not be handled
296 Requests in queue for filter frontend_net are removed if client
297 closes connection for the session and request is not yet handled.
299 sru_z3950: serialize requests. This is to ensure that pipelined
300 HTTP requests are handled properly.
302 --- 1.3.28 2012/04/04
304 New class, wrbuf, that wraps YAZ' WRBUF.
306 --- 1.3.27 2012/03/30
308 Metaproxy daemon is now running as user "metaproxy". This user is
309 managed by package maintainer scripts. The user information is stored
310 in /etc/metaproxy/metaproxy.user .
312 --- 1.3.26 2012/03/20
314 New filter, sort, that allows sorting of XML records via Z39.50
317 Filter record_transform: USEMarcon support. For example:
318 <retrieval syntax="usmarc">
319 <backend syntax="unimarc" name="F">
320 <usemarcon stage1="/etc/usemarcon/uni2us/uni2us.ini"/>
324 Filter multi: empty route pattern uses route as default.
326 <target route="z3950.indexdata.com">z3950.indexdata.com</route>
327 may use the shorter notation
328 <target route="z3950.indexdata.com"/>
330 Filter query_rewrite: use config path to locate XSLT.
332 Filter frontend_net: log statistics.
333 If a custom message element in frontend_net configuration it makes
334 the frontend_net filter produce a log entry whenever an operation
335 is completed. The log is always written using yaz_log with the
336 custom message given, the package ID (session ID) , the time
337 the operation has been active (end-to-end) , the threads currently
338 active/total and the size of the request input/output queues.
340 query_rewrite: charset conversion of query terms.
341 This is an optional feature. Enabled by element <charset> in
342 configuration with attribute 'from' and 'to' that specifies
343 from/to encodings. The default 'from' encoding is UTF-8.
345 Filter record_transform: honor piggyback searches.
347 Filter zoom: re-connect when database is reused.
348 Re-connect is necessary if a connection is lost or a timeout occurs.
349 If not, we'll be seeing zero hits, when we shouldn't.
351 --- 1.3.25 2012/02/29
353 zoom: Change scheme for dealing with content proxy URLs. The module
354 now has its own common XSL transform that is enabled by record_xsl
355 attribute in the configuration. This XSL gets parameter cproxyhost
356 that holds the host for the content proxy session . The genearted-url
357 is created only if urlRecipe is enabled. In previous version default
358 value of urlRecipe was ${md-electronic-url}; it is now empty and
359 disabled by default. Also generated-url no longer includes the content
360 proxy host. Content proxying URLs is supposed to the handle in the record_xsl
363 zoom: new setting timeout that specifies timeout for outgoing Z39.50/SRU
364 connections. Default value is 40 (seconds).
366 zoom: tune CCL to Z39.50 diagnostics mapping. Throw Bib-1: 108
367 "Malformed query" for syntax errors and related ones; throw
368 Bib-1: 3 "Unsupported search" for everything else. Details from
369 the CCL parser is provided as additional-info.
371 multi: new setting hideerrors that makes multi only relay diagnostics
372 to a client if all backends fail.
374 --- 1.3.24 2012/02/23
376 zoom: empty ccl_map field-mappings disables CCL map.
378 zoom: fix Explain search that could return error if session was
381 --- 1.3.23 2012/02/10
383 zoom: returns Explain records for database IR-Explain---1. The
384 target profile records are converted to Explain records via XSLT.
386 session_shared: make error recovery configurable. Whether a search
387 is restarted on errors or not, is configurable by attribute "restart"
388 in element "resultset" in configuration.
390 session_shared: only relay init for first request. session_shared, for
391 each backend class, now only relays first init request (rather than all).
392 The module only needs to save init response info once. This avoids the
393 need to check for session max.
395 --- 1.3.22 2012/02/02
397 zoom: fix memory leaks.
399 session_shared: maximum number of sessons is configurable. Default
400 value is 100. Result-sets for backends without named result sets are
401 only re-used if databases is identical for a search. This is under the
402 assumption that performance may suffer for those backends when
403 changing the database for each search.
405 multi: combines diagnostics from all backends. All diagnostics from
406 backends are combined into multiple non-surrogate diagnostics; rather
407 than just one diagnostic from first backend.
409 --- 1.3.21 2011/12/27
411 zoom: relay realm to cproxy parameter file.
413 Configuration: Allow filter collection element inside route. This
414 makes it possible to include multiple filters at once.
416 zoom: nocproxy also disables urlRecipe.
418 --- 1.3.20 2011/12/21
420 zoom: return diagnostic if CQL sortby conv fails. Diagnostic Bib-1 214
421 "Illegal sort relation" is returned. Gets translated to SRU diagnostic
422 90: "Unsupported direction value".
424 zoom: honor database argument nocproxy. This disables creating a content
425 connector session (for non-CF targets, usually) and also relays nocproxy
426 as database argument to a CF target.
428 --- 1.3.19 2011/12/16
430 zoom: Multiple proxy hosts may be given for proxy rich database
431 parameter. List is comma separated.
433 http_file: decodes URI paths properly. Does not return 404: not found
434 if no prefix are matches. Instead packages are passed on.
436 --- 1.3.18 2011/12/08
438 zoom: content-{user,password,proxy} are passed on to content proxy
439 system and takes precedence over user,password,proxy .
441 sru_z3950: SRU extra argument x-log-enable=1 enables a search response
442 with a log element including log material from children filters. At
443 this point, only the zoom filter uses this log facility. It will
444 eventually be used by other filters as well. In particular it might be
445 useful for this feature to track all filters in used during a search.
447 zoom: for x-log-enable=1, APDUs sent by ZOOM C, records as received
448 and queries as they are manipulated are logged.
450 zoom: extend addinfo with native diagnostics. Diagnostics as received
451 by ZOOM C are put into addinfo - including ZOOM, HTTP, SRU and Bib-1
452 diagnostics. This indicates both a backend diagnostic and the original
455 zoom: default urlRecipe value is ${md-electronic-url}
457 zoom: target profile setting sruVersion is recognized.
459 --- 1.3.17 2011/11/17
461 zoom: log target profile record fetched (AKA Torus).
463 --- 1.3.16 2011/11/17
465 Change target profile parameter CfSubDb to CfSubDB.
467 --- 1.3.15 2011/11/12
469 zoom: bug fix: realm was relayed to CF targets by mistake (realm only
470 makes sense to the zoom module itself).
472 --- 1.3.14 2011/11/11
474 zoom: realm may be given as part of database.
476 --- 1.3.13 2011/10/26
478 Fix Origin class assigment method; was removd by mistake in 1.3.12.
480 --- 1.3.12 2011/10/26
482 zoom: database args x-name=value are passed through to backend database.
484 SRU filter: user may specify session ID that is passed to log entries
485 that follows. It is specified by using x-session-id in the SRU arguments.
487 zoom: fix null pointer reference which would occur for bad url parameter
488 inside "torus" or if url was not given.
490 --- 1.3.11 2011/09/09
491 Fix bug in filter session_shared where sessions would not expire
492 properly (session ttl). This in turn could make the target close the
493 connection before expected and session_shared would return diagnostic
494 2: system temporarily available.
496 --- 1.3.10 2011/09/09
498 zoom: new target profile setting: sortmap_field. If sortmap_field is given
499 the field is mapped to the value for the sortmap. Values not matching
500 sortmap_field are passed verbatim.
502 zoom: new target profile setting: sortStrategy. One of: "z3950", "type7",
503 "cql", "sru11" or "embed". The "embed" chooses type-7 or CQL sortby
504 depending on whether RPN or CQL is actually sent to the target.
508 zoom: urlRecipe result is stored in <pz:metadata type="generated-url">.
510 zoom: For content proxy authentication is stored in param name
511 "auth", instead of "authentication".
515 zoom: relay schema in SRU mode. Previously recordSchema was not affected
520 zoom: new target profile element literalTransform that holds XSLT
521 (encoded as string) for target. Only if present and non-zero length it is
522 considered present. This takes precedence over transform.
524 Don't rely on trang anymore for Git checkout builds. Configuration in etc
525 will only be properly validated if trang is available. From now on only
526 relax NC files are bundled with the source dist.
528 Updates to check for Boost unit test (autoconf stuff). On MacOSX this
529 component was not detected when it should be.
533 z3950_client: mark non-surrogate diagnostics from backend.
535 zoom: a proxy may be specified for HTTP fetch of target profiles.
539 Honor piggyback. Makes some SRU targets behave that insist on
540 maximumRecords > 0, but also increases performance.
544 Fix dlpath in installed metaproxy.xml for RPM/Deb package. The
545 file was not update for libdir/metaproxy4 in version 1.3.2.
549 Change location of Metaproxy modules from libdir/metaproxy to
550 libdir/metaproxy4. Directory libdir/metaproxy is also owned by
551 libmetaproxy3 and, thus, should not be used by libmetaproxy4.
553 New facility to dump APDUs from zoom filter. Enabled by
554 <log apdu="true"/> in the zoom filter configuation.
556 zoom filter bug fix: SRU diagnostics received from backend was
557 not properly converted to Bib-1 diagnostics.
559 Package metaproxy depends on libmetaproxy4, same version.
563 zoom: fix a bug WRT passing authentication parameters to backends.
567 Fixes for windows Makefile.
569 --- 1.2.10 2011/07/25
571 Change major version of metaproxy library from 3 to 4. This in turn
572 makes new package names for Debian and RPM.
576 zoom: enable marc-8 encoding by default for usmarc and opac (in pz2
579 zoom: configurable element sets for record transforms.
581 zoom: the target profile based transform is specified by element_transform
582 in element torus of of the ZOOM filter configuration ; default value
583 is "pz2". Target profile based retrieval is specified by element_raw
584 in configuration. It will perform same steps, but omit the XSL transform.
585 Default value is "raw".
587 zoom: element set is omitted if not set in profile. But only if pz2
588 transform is in effect. Previously the default element set was to "F".
590 zoom: For non-CF targets database arguments are parsed. User may supply
591 db,user=myuser&password=mypass for non-CF targets. These values override
592 what's given the authentication from the target profile.
594 session_shared: fix reference to freed memory. Would occur if a search
595 response had non-surrogate diagnostics.
599 Route may be given for each port in frontend_net.
603 Documentation for zoom filter. Local target profiles may be specified.
605 Fixes for zoom filter.
609 First version with zoom filter.
613 Filter z3950_client may be configured to always send a close APDU
614 to backend target when connection/session is closed. This will only
615 happen if close APDU is not already sent. Enabled by configuration
616 for z3950_client (force_close).
618 Filter virt_db and multi: relay close APDU.
620 Filter virt_db and multi: relay init size parameters
621 preferredMessageSize and maximumRecordSize.
623 Filter sru_z3950: increase init sz parameters from 1MB to 10 MB.
627 RPM package for Metaproxy works for both SLES11 and Centos 5.5.
629 metaproxy-config: exec_prefix, libdir, includedir. Use these variables
630 as determined by configure.
632 RPM: Release includes 'indexdata' name. Use indexdata in release name so
633 this package can be distinguished from other vendors.
637 Fix filter multi: relay idAuthentication parameters.
641 Add metaproxy-config for returning compiler flags, libraries.
645 Fix --with-boost=PREFIX .
649 session_shared: fix use of maintenance thread.
651 Introduce 'start' method for filters and routers. It gets called after
652 configure and after fork, but before processing. This changes API -
653 from libmetaproxy2 to libmetaproxy3.
657 session_shared: ensure backend session is closed if init rejected
660 z3950_client: fix NULL ptr reference that could occur if two clients
661 connected concurrently and if max-sockets was in effect.
665 Fix bug 3497 - Metaproxy unstable while stopping.
667 Fix bug 3495 - SEGV in SRU filter.
671 Filter multi throws diagnostic 'Present Out of Range' when
672 appropriate - rather than returning 0 records.
674 Filter virt_db: fix bad result reuse. Could happen if a result
675 was overriden and a backend did not supported named result sets.
679 Filter log: category access logs diagnostics even if searchStatus
680 or presentStatus is 'success'.
684 The SRU to Z39.50 filter does repeated Z39.50 present requests
685 to fetch all records. Needed when a Z39.50 server returns partial
686 results (due to message size limits).
690 Metaproxy now kills all child processes that are spawned by
691 modules (in case of fork, exec).
695 Debian package now installs /etc/metaproxy/metaproxy.xml which
696 includes all XML files /etc/metaproxy/filters-enabled .
697 The include facility uses YAZ' yaz_xml_include_simple (YAZ 4.0.1).
701 Package based on YAZ version 4 and YAZ++ 1.2.0. It now includes a
702 development package to facilitate 3rd party Metaproxy modules.
704 --- 1.0.23 2010/01/04
706 Filter virt_db: Close backend filter session when Init rejected is received
707 from it (in which case it's not really closed yet). This will ensure we don't
708 run out of resources such as FDs in this case.
710 sru_z3950 filter: Accept any database (including those not listed).
712 --- 1.0.22 2009/12/03
714 Prepare for 64-bit YAZ. yazproxy will still work with YAZ++ 1.1.4 or
715 later which means YAZ 3.0.47 or later.
717 --- 1.0.20 2009/11/19
719 For filter virt_db, the database is a glob pattern and the virtual
720 database sections are consulted in the order given.
722 --- 1.0.19 2009/07/08
724 For filter multi, the target (for routing) may be given as a glob-pattern.
726 More documentation for filters virt_db and multi.
728 Update schema to allow for no database in sru_z3950 filter.
730 --- 1.0.18 2009/06/30
732 Added limit filter to put sleep (penalty) for heavy use.
734 Filter frontend_net may be configured to limit the number of new connections
735 from same IP to some value (connect-max).
737 Fixed the load_balance filter.
739 --- 1.0.17 2009/06/16
741 Fix path for metaproxy executable for Debian init.d script.
743 --- 1.0.16 2009/06/10
745 SRU to Z39.50 filter honors x-username and x-password. If only
746 x-username is given that translates to open authentication (Z39.50v2). If
747 both x-username and x-password is present that translates to idPass
748 authentication (Z39.50v3).
750 New facility to change current working directory (-w).
752 Update to upstream skeleton of init.d script. Should fix bug #2619.
754 Filter session_shared now caches records (used to only cache connections
757 Filter session_shared now invalidates a Z39.50 session if a server
758 returns -1 hits. This facility was also part of yazproxy and gets around
759 a bug in Voyager-based Z39.50 servers.
761 --- 1.0.15 2008/11/18
763 Fixed reference counting bug in Z39.50 client module (could cause SEGV).
765 --- 1.0.14 2008/06/09
767 Fixed the value of SRU record schema in searchRetrieve response. It was set
768 to a fixed value of "dc" before.
770 Serialize identical SRU requests. This is useful if HTTP client software
771 fires identical requests against metaproxy.
773 Allow Z39.50 target to be specified for SRU requests by using SRU extra
774 parameter x-target. Allows SRU to contact arbitrary Z39.50 targets and
775 avoid static configuration. This facility is handled by the sru_z3950 module
776 and the z3950_client module.
778 Allow maximum number of sockets to be used for a Z39.50 client by the
779 use of SRU extra parameter x-max-sockets. This facility is handled by the
780 sru_z3950 module and the z3950_client module.
782 --- 1.0.13.1 2008/02/29
784 Simplified check for Boost libraries.
786 --- 1.0.13 2008/02/29
788 First Debian package.
790 The sru_z9350 filter now recognizes SRU parameter z-target as being
791 a ZURL of the form host/database .
793 Mergetype may be specified for filter 'multi'.
795 --- 1.0.12 2007/09/19
797 Fixed problem in Makefile WRT library specifictions. This could produce
798 linker errors (when they should not happen).
800 Fixed bug #1341: MetaProxy returning different results. Problem was that
801 fix-up of record database did not normalize the database name.
803 Documentation updates for Windows compilation.
805 --- 1.0.11 2007/06/14
807 Fixed problem with logfile being truncated.
809 --- 1.0.10 2007/05/23
811 Fixed bug #1136: Access rights not enforced.
813 Extension for log module. The log category 'access' logs more details.
814 New category 'user-access' added which is simlar to 'access' but adds
815 the Z39.50 user as for all entries in a session.
819 Added support for configurable default/force target/vhost for module Z39.50
824 Implemented filter, session_shared, which optimizes usage of Z39.50
825 sessions and result sets.
827 New filter, record_transform, which converts MARC/XML records.
829 New filter, sru_z3950, which converts SRU to Z39.50 packages.
831 New filter, load_balance, in development.
833 New filter, zeerex_xplain.
835 XML framework for config files started.
837 Master RelaxNG Compact schema's are found in xml/schema/*.rnc,
838 RelaxNG XML schemas and XML Schema's are generated from RNC syntax.
839 XML config files are checked against RNG and XML Schema's.
841 XSLT transformation framework added in xml/xslt/*.xsl, consisting mainly of
842 LOC Marc21 stylesheets found at http://www.loc.gov/marcxml/xslt.
843 Added stylesheet explain2cqlpqftxt.xsl which transforms a standard SRU ZeeReX
844 explain record to YAZ CQL-to-PQF text config file.
848 Added 'timeout' setting for filter frontend_net which specifies the number
849 of seconds a session is idle before it is closed. Default timeout is
854 Database name in records returned set for virt_db/multi filters.
856 Filter session_shared now functional.
858 Log filter can be configured to write to a given file using 'filename'
859 element. Also information category can be specified with 'category'. If
860 filename is omitted, the log filter writes to stdout. See etc/config5.xml
865 Fixed compilation on Windows.
869 Added documentation for the hidenavailable option for the multi filter.
873 Fixed bug #573: Hide errors for individual servers. If the element
874 'hideunavailable' is given in the configuration, individual servers
875 being unavailable are hidden (unless all are unavailable).
877 Fixed bug #574: Database names are recognised case-sensitively.
879 Fixed bug #567: Fix up database name in Name-Plus-Record.
881 Fixed bug #568: Update win/makefile for VS 2005.
883 Fixed bug #569: Some options throws unknown exception.
887 More information about virtual hosts. The 'etc' directory is part of the
892 Build instructions for Windows. NMake makefile part of distribution tar.
898 Filters functional: auth_simple, backend_test, frontend_net, http_file,
899 log, multi, query_rewrite, template, virt_db, z3950_client.
901 Filters in development: session_shared.
903 Pseudo-filters: template, dl