3 zoom: make retry on failure configurable MP-565
4 The default and existing behavior is that backend failures (any
5 diagnostic) makes the module re-search once. The behavior may
6 be changed by db parameter 'retry'. If given value '0' disables
7 retry and '1' enables it. If not given, the Torus record may
8 specify with element retryOnFailure (value '0'/'1').
12 Fix race condition in SIGTERM handling. Could terminate whole metaproxy
13 instead of just a child process. Extremely rare in real life, hit me with
14 CF stress testing. MP-559.
18 http_file: passthru option MP-557
19 New facility for http_file to passthru - even if an area is matched. The
20 default behavior (passthru=false) is to return 404: Not found. With
21 passthru=false, next filter is consulted.
25 Fix ref to freed memory in log filter 1line - MP-556
27 echoedSearchRetrieveRequest support MP-555
31 zoom: allow hostname to be given for ipauth MP-552
32 The Torus setting for that is called auth_hostname.
36 zoom: IP auth use field "ipRanges" rather than "ip" MP-551
40 session_shared: close in ~BackendInstance MP-549
41 This fixes a serious issue where some MP would leak sockets.
43 session_shared: mutex lock in BackendClass::release_backend MP-550
44 Fixes a SEGV that could occur (in rare cases).
48 zoom: Do not include ZOOM C's fake surrogate diag recs MP-547
50 zoom: fix invalid present response in some cases MP-546
52 zoom: Relay Torus HTTP error message
56 Check for proper limits before using RecordCache functions MP-544
60 Build packages for Ubuntu Trusty Tahr 14.04 LTS
62 sort: crash / invalid_read in filter sort MP-541
64 sru_z3950: facet should be stored in additionalSearchInfo MP-533
66 doc: fix missing man pages MP-542
68 cql_rpn: fix threading problem with CQL to RPN conversion MP-497
70 cql_rpn: allow conversion from RPN to CQL (reverse) MP-537
74 sru_z3950: fix facet response (memory corruption) MP-532
76 log: fix crash idPass user is omitted MP-530
80 query_rewrite: pass-thru non Type-1 queries MP-527
82 metaproxy stop (SIGTERM) kills all child processes spanwed by
83 filter (if any) before invoking filter destructors. MP-525
87 http_file: only supports HTTP GET MP-523
89 session_shared: shut down expire thread in destructor
90 This ensures that expire thread is not running after destruction
91 and does bad memory references, etc.
93 frontend_net: fix segfault on startup MP-524
94 Would happen if MP was listening on multiple ports and one
95 of the ports was already in use (and MP would exit).
97 frontend_net: fix memory leak MP-521
98 This leak would occur if all sessions were in use and the input
99 queue was cleared when a client would close connection (socket).
101 frontend_net: fix compilation on Windows (SIGUSR1 does not exist)
105 http_rewrite: use local skiplist; fixes memory corruption. MP-520
107 http_client: x-forwarded-for controls X-Forwarded-For presence
108 If x-forwarded-for setting (boolean) is enabled, http_client will
109 generate an X-Forwarded-For header entry which includes existing
110 X-Forwarded-For (if any) and current peer address (immediate client
111 of Metaproxy). By default x-forwarded-for disabled and X-Forwarded-For
112 will not be generated.
114 z3950_client: client_ip controls client-IP presence
115 If client_ip setting (boolean) is enabled, z3950_client will
116 generate a client_ip OID as part of init request which includes
117 previous client_ip (if any) and current peer address (immediate
118 client of Metaproxy). By default client_ip is disabled and client_ip
119 will not be generated.
121 HTTP X-Forwarded-For/Z39.50 Client-IP support
122 virt_db, multi: relays Z39.50 client-IP.
123 sru_z3950: converts X-Forwarded-For header to Z39.50 client-IP.
124 zoom: uses Client-IP or origin address (prefer Client-IP).
125 frontend_net: Strips tcp: from peer address (so that it is no longer
126 printed and stripped in zoom filter).
127 z3950_client: builds client-IP list - combining immediate peer address
128 as returned by COMSTACK and existing client-IP list (if avaiable).
129 The Origin only printes first X-Forwarded address.
133 Log when SIG{TERM,USR1} is received ASAP MP-513
134 Do it in frontend_net event loop rather than in place for metaproxy
135 main, which only exits when all sessions are terminated for SIGUSR1
138 metaproxy-config: quote some RHS values (that might include blanks)
140 Fix leak in sru_z3950 filter - when explain is returned MP-511
142 Allow stylesheet to be given for sru_z3950 filter MP-510
143 This is based on a patch by Sven Porst and the functionality
144 of the YAZ Generic Frontend Server.
146 Allow base attribute in configuration file tags - the attributes are
147 inserted by XInclude usage as mentioned on
148 yazlist: http://lists.indexdata.dk/pipermail/yazlist/2012-Au
149 and noted in a gist: https://gist.github.com/3551094
151 Package metaproxy provides virtual package metaproxy6 MP-508
152 This allows module packages to depend on a metaproxy server
155 Filter destructors called upon daemon termination MP-505
156 When metaproxy daemon receives SIGTERM the stop method of each filter
157 is called. The stop method existed before, but did not take any
158 arguements (void).. The frontend_net filter can now distinguish
159 between SIGUSR1 (stop bind, but keep sessions running) and SIGTERM
160 (stop immediately). Note that this changes the API+ABI of Metaproxy
163 zoom: sync up with Pazpar2 WRT authentication handling MP-492
165 Router: use shared_ptr rather than naked one - to avoid leak if an
166 exception is thrown in configure.
170 zoom: Add nocproxy=1 for contentConnector sessions MP-501
172 Doc: mention proper versions; fix link to Boost win binaries.
174 Windows: update for Boost 1.55
176 Windows: avoid warning when using boost::split. Done by defining
177 _SCL_SECURE_NO_WARNINGS for Visual Studio.
179 Fix LSB conformance for /etc/init.d/metaproxy MP-500
180 Debian: add support for /etc/init.d/metaproxy status
182 sort: Add const to Record less than operator in order to compile on
187 session_shared: fix element-set handling in record caching. MP-499
189 document http_rewrite. MP-468
191 http_write: Honor X-Metaproxy-SkipLink MP-479 . Filter understands and
192 respects the header (which will normally come from the cproxy filter)
196 RPM: fix dependency for libmetaproxy5-devel MP-496. The libmetaproxy5-devel
197 RPM was unsable in version 1.4.0.
199 Remove log message about "backend classes". Appeared in version 1.4.0.
203 Build RPM/Deb packages with YAZ 5 and yazpp 1.5. Metaproxy still compiles
204 with older version from source, but packages now use YAZ 5 that supports
207 sru_z3950: Fix SEGV for decoding invalid SRU requests
208 Incorrect reference to union (was explain response rather than
211 session_shared: match additionalSearchInfo (includes facets). In
212 layman's terms means that means that facets are properly handled
213 by this filter. Eg a change in requested facets will issue new
214 search and facets from exisiting result set are cached.
216 --- 1.3.62 2013/09/11
218 http_rewrite: better handling of <script> content in HTML parser. MP-486
220 http_rewrite: fix threading issue with regex. MP-482
222 bounce: don't use strdup for fixed length content. Error occurred in echo
225 session_shared: expire backend class when no instances left. This
226 means memory clean up, but not really a leak fix.
228 virt_db: fix leak for naked ptr.
230 cql_rpn: use config relative path for cql2rpn file. MP-481
232 Updates for upcoming YAZ 5.
234 --- 1.3.61 2013/08/29
236 New configuration directories ports.d/routes.d for metaproxy
237 configuration. This allows 3rd party packages to install config
238 for ports and new routes. MP-477
240 --- 1.3.60 2013/08/21
242 Fix metaproxy-config --libs to return non-mt over mt libs.
243 The -mt versions do not exist as shared objects and cause
244 linker errors for applications linking with Metaproxy.
245 Problem present in versions 1.3.56 - 1.3.59. MP-475
247 HTML: clean up char checks. Add ptr to HTML parse spec
249 HTML parser stops eating tag when <-char is met MP-473
251 rewrite: do not even compare content types, if we don't have any
252 the regex_match caused a segfault if we had no content-type in the
255 rewrite: within header=... matches only the header value
256 Used to match the whole header line, but we need to use
257 ^$ anchoring for host-relative regexps, and they need to
258 anchor at the ends of the value. MP-470.
260 rewrite: Ruleset functional MP-469
262 --- 1.3.59 2013/07/12
264 session_shared: negotiate init sz parameters.
265 By default, session_shared will honor the paramters given by client.
266 An alternative, but not implemented, algorithm would be to only
267 re-use sessions with same sz parameters. This however, could reduce
268 re-use of sessions a lot. Hence this, simple algorithm instead. The
269 negotiation to a maximum sz values can be enabled by using
270 <init maximum-record-size="sz1" preferred-message-size="sz2"/>
271 in configuration. This will make session_shared send those values
272 to backends and use returned init values in negotaition to
273 client before session_shared.
275 session_shared: resolve result-set references.
276 The reference is substitued with the query for old set if database
277 match and query type is Type-1. If not the reference will issue a
280 sort filter: relays RecordComposition including elementSet in use for
283 http_client: better diagnostics
285 http_client: disables HTTP redirect handling by default.
286 It can be configured with max-redirects in configuration.
288 --- 1.3.58 2013/06/12
290 Fix loading of filters cql_rpn and sru_z3950 . Was broken by 1.3.57.
292 --- 1.3.57 2013/06/12
294 Make RouterChain and RouterXML part of public API (libmetaproxy).
296 http_client: honor X-Metaproxy-Proxy as an alternative to
297 the "proxy" configuration. Allows proxy to be set per HTTP request.
299 sru_z3950: For SRU requests recognize x-client prefixes as a way
300 to ingest "database parameters".. The suffix of x-client- serves
301 as database argument name. Multiple may be given. For example:
302 http://path/db/?operation=searchRetrieve&x-client-user=a&x-client-password=b
303 is turned into Z39.50 database
306 --- 1.3.56 2013/05/27
308 New filter present_chunk. This filter allows splitting of present requests into smaller chunks.
310 New filter sd_remove, which replaces surrogate diagnostics with
311 SUTRS records. This filter tries to deal with clients that breaks
312 when receiving surrogate diagnostics.
314 new filter http_client. Same role as z3950_client, but just for
315 HTTP. Allows Metaproxy to operate as a HTTP proxy.
317 New filter http_rewrite1, which serves as purpose on how to rewrite
318 HTTP content with Metaproxy.
320 Use libboost-system if available, because newer versions of libboost-threads
321 requires libboost-system.
323 Allow frontend_net to serve SSL/HTTPS, because we can specify a server
326 --- 1.3.55 2013/04/10
328 zoom: Torus setting: authenticationMode which may hold values "basic"
331 --- 1.3.54 2013/03/27
333 configure: check for Libxslt support in YAZ and rely on definitions
334 from yaz-config, rather than doing own xslt/xml2 checks.
336 Allow timestamp format for log lines to be given with option -m
337 for metaproxy. Similar to yaz-ztest/GFS option -m.
339 Document log category 'line' for log filter.
341 Solr configuration example in etc/config-solr.xml
343 multi: do not mess with request package. For scan and search,
344 database-names were modified and the request package was left with
345 dangling pointers that caused a log filter to fail (request package
346 inspected after multi was invoked).
348 Documentation: fix id of metaproxy-config ref .
350 Documentation: update for USEMARCON support.
352 --- 1.3.53 2013/01/31
354 record_transform: allow OPACXML to OPAC conversion
356 zoom: document content-proxy
358 zoom: document db parm content-{user,password}, torus_url. Also
359 <torus auth_url="..> which makes zoom operate in authenticated mode
362 --- 1.3.52 2012/11/30
364 zoom: fix http://-check. SRU search broken in 1.3.51.
366 --- 1.3.51 2012/11/15
368 zoom: only append http:// for SRU if not already given . Makes it
369 possible to use https-URLs.
371 Use yazpp 1.4 or later due to new ABI.
373 frontend_net: allow max package size to be specified. Controlled by
374 attribute 'max_recv_bytes' of element 'port'.
376 --- 1.3.50 2012/10/29
378 For most generated diagnostics by filters, typically temporary
379 system error, augment addinfo message with filter name.
381 Add support for CentOS 6 packages.
383 sru_z3950: interpret Z39.50 diagnostics part of Init Response.
385 Add man page for metaproxy-config.
387 --- 1.3.49 2012/10/18
389 zoom: new config element passthru. This defines an element set that is
390 passed verbatim to the backend in pz2 mode.
392 auth_simple: allow both idPass and open auth. Also fix SEGV that could
395 --- 1.3.48 2012/10/08
397 z3950_client: fix string handling for init diagnostics in the case where
400 query_rewrite: no charset conversion for error queries. Avoid performing
401 charset conversion for query conversion errors. The resulting Type-1
402 query is invalid in this case.
404 --- 1.3.47 2012/10/04
406 For graceful stop (SIGUSR1), metaproxy will kill children processes.
408 Log when metaproxy is invoked in test mode (-t).
410 Log PID for each log message.
412 multi: combine both NSDs and multiple NSDs into one (diagnostics).
414 z3950_client: fixup multiple NSD's too. Like surrogate diagnostics,
415 a (backend=target) is appended for each diagnostic so that can be
416 determined the origin of error.
418 multi: hideerrors also in use for present response.
420 Solr example in zoom man page.
422 Fix typo in query_rewrite config example.
424 Log at least first non surrogate diagnostic. Instead of
425 "Z_Records_multipleNSD"
427 multi: Fix check for opt Records in present response. A SEGV could occur
428 if a target did not return records and no diagnostics.
430 --- 1.3.46 2012/09/24
432 Yet another fix for graceful stop.
434 --- 1.3.45 2012/09/12
436 sru_z3950: relay surrogate diagnostics.
438 --- 1.3.44 2012/09/10
440 zoom: Honor extraArgs, strip # in zurl.
442 multi: fix SEGV for scan. Reported by Rustam T. Usmanov.
444 zoom: url_recipe allow %{var[reg]} substitutions.
445 It's like ${var[reg]} but does URI component encoding as well.
447 --- 1.3.43 2012/08/22
449 RPM/Deb: require yazpp 1.3.2, because it fixes a missing close of
450 non-keepalive HTTP sessions.
452 http_file: allow zero size files (bug fix)
454 Fix zoom schema: auth_url is optional
456 --- 1.3.42 2012/08/20
458 zoom: fix un-init memory (could result in SEGV at session close)
460 frontend_net: handle X-Forwarded-For. This is stored in package.origin()
461 and may be used in filters as usual.
463 zoom: authentication via Torus lookup
464 Enabled by new configuration setting: auth_url . If this is defined,
465 the zoom module will contact Torus for auth/IP lookup and that will
466 define realm to be used in session.
468 --- 1.3.41 2012/08/10
470 virt_db: Fix database name - first character we removed by mistake.
471 Bug introduced in 1.3.40.
473 --- 1.3.40 2012/08/06
475 virt_db: Don't use "unix path" as database for Unix sockets.
477 --- 1.3.39 2012/08/02
479 z3950_client: Don't tamper with / in zurl - fixes problems
480 using Unix sockets for backends.
482 session_shared: fix integer overflow problem with hit count.
484 session_shared: avoid long usage of cached queries.
486 zoom: New database argument , torus_url to set URL of Torus
487 record to be fetched.
489 --- 1.3.38 2012/07/04
491 Fixes for 'metaproxy reload' for RPM/Debian packages.
493 zoom: Allow rpn2cql conversion to be augmented with a properties file.
494 Element rpn2cql can be specified per-target for the zoom filter.
496 log: New category "line" which is a single-line log message with
497 most important parts of a HTTP/Z39.50 request/response.
499 --- 1.3.37 2012/06/01
501 frontend_net: add facility to report live statistics about response
502 times and current thread usage. The report is an XML document
503 and is triggered for a specific URL path. This is set by <stat-req>
504 in the configuration of frontend_net. By default this report is
505 disabled (same as empty value for <stat-req>).
507 Fix reload problem in init.d script for RPM/Debian.
508 The '/etc/init.d/metaproxy reload' in some cases would stop but not
509 start metaproxy - effectively stopping the service.
511 Don't display start log message when config testing (-t).
513 zoom: avoid CCL message limit of 1K in ZOOM filter.
515 --- 1.3.36 2012/05/10
517 metaproxy init script reacts to reload which does graceful stop +
518 start and is used by logrorate script.
520 --- 1.3.35 2012/05/09
522 Fixes for Windows compilation.
524 Metaproxy daemon reacts to SIGUSR1 in which case it will leave
525 existing sessions running but terminate the monitor process that is
526 used in keepalive mode.
528 Change start log message to 'metaproxy start'. Was 'Metaproxy start'
529 before. Consistent with 'metaproxy stop' message.
531 zoom: document zoom's proxy_timeout
533 z3950_client: fixup addinfo for init response
535 virt_db: return other diagnostic if init is rejected. Diagnostic 236:
536 "Access to specified database denied" is returned, but only if init
537 response from backend does not carry diagnostics already.
539 multi: relays user info for first rejected target. The other-information
540 field for init response for first rejected target is in common init
541 response. This ensures that some backend init diagnostics are returned to
544 --- 1.3.34 2012/04/25
546 frontend_log: extend logging (when message is given in config).
548 --- 1.3.33 2012/04/25
550 zoom: Fix check for proxy. Use diagnostic 1074 for proxy failures.
552 --- 1.3.32 2012/04/24
554 sru_z3950 filter passes through incoming Z39.50 requests again. Was
555 not handled by mistake in Metaproxy versions 1.3.29, 1.3.30 and 1.3.31.
557 --- 1.3.31 2012/04/24
559 zoom: fixes for retry/proxy failover logic. More logging.
561 --- 1.3.30 2012/04/23
563 zoom: return addinfo="proxy failure" for proxy failures. This also
564 changes the scheme for dealing with proxies a bit. zoom now always
565 do proxy check, even if there's no failover. Fortunately, that's not
568 zoom: Init rejected wo diagnostics maps to Bib-1:1014.
569 Bib-1 1014, "Init/AC: Authentication System error", seems pretty
570 generic. We don't know why the init would fail; IP, user, block IP, etc.
571 sru_z3950 filter maps this to SRU diagnostic 3: "Authentication error".
573 zoom: guess if invalid SRU response was an auth failure
575 session_shared: disable session retry by default . Can be enabled by
576 restart="true" in resultset section.
578 --- 1.3.29 2012/04/18
580 zoom: may read cf-proxy's config settings.
581 This reduces manual configuration of the content proxy server host.
582 The ZOOM module will use the old style session.proxyhost if "server"
583 is given (deprecated) and use the new style proxyhost/session if
584 "config_file" is in use.
586 frontend_net: remove incoming requests that can not be handled
587 Requests in queue for filter frontend_net are removed if client
588 closes connection for the session and request is not yet handled.
590 sru_z3950: serialize requests. This is to ensure that pipelined
591 HTTP requests are handled properly.
593 --- 1.3.28 2012/04/04
595 New class, wrbuf, that wraps YAZ' WRBUF.
597 --- 1.3.27 2012/03/30
599 Metaproxy daemon is now running as user "metaproxy". This user is
600 managed by package maintainer scripts. The user information is stored
601 in /etc/metaproxy/metaproxy.user .
603 --- 1.3.26 2012/03/20
605 New filter, sort, that allows sorting of XML records via Z39.50
608 Filter record_transform: USEMarcon support. For example:
609 <retrieval syntax="usmarc">
610 <backend syntax="unimarc" name="F">
611 <usemarcon stage1="/etc/usemarcon/uni2us/uni2us.ini"/>
615 Filter multi: empty route pattern uses route as default.
617 <target route="z3950.indexdata.com">z3950.indexdata.com</route>
618 may use the shorter notation
619 <target route="z3950.indexdata.com"/>
621 Filter query_rewrite: use config path to locate XSLT.
623 Filter frontend_net: log statistics.
624 If a custom message element in frontend_net configuration it makes
625 the frontend_net filter produce a log entry whenever an operation
626 is completed. The log is always written using yaz_log with the
627 custom message given, the package ID (session ID) , the time
628 the operation has been active (end-to-end) , the threads currently
629 active/total and the size of the request input/output queues.
631 query_rewrite: charset conversion of query terms.
632 This is an optional feature. Enabled by element <charset> in
633 configuration with attribute 'from' and 'to' that specifies
634 from/to encodings. The default 'from' encoding is UTF-8.
636 Filter record_transform: honor piggyback searches.
638 Filter zoom: re-connect when database is reused.
639 Re-connect is necessary if a connection is lost or a timeout occurs.
640 If not, we'll be seeing zero hits, when we shouldn't.
642 --- 1.3.25 2012/02/29
644 zoom: Change scheme for dealing with content proxy URLs. The module
645 now has its own common XSL transform that is enabled by record_xsl
646 attribute in the configuration. This XSL gets parameter cproxyhost
647 that holds the host for the content proxy session . The genearted-url
648 is created only if urlRecipe is enabled. In previous version default
649 value of urlRecipe was ${md-electronic-url}; it is now empty and
650 disabled by default. Also generated-url no longer includes the content
651 proxy host. Content proxying URLs is supposed to the handle in the record_xsl
654 zoom: new setting timeout that specifies timeout for outgoing Z39.50/SRU
655 connections. Default value is 40 (seconds).
657 zoom: tune CCL to Z39.50 diagnostics mapping. Throw Bib-1: 108
658 "Malformed query" for syntax errors and related ones; throw
659 Bib-1: 3 "Unsupported search" for everything else. Details from
660 the CCL parser is provided as additional-info.
662 multi: new setting hideerrors that makes multi only relay diagnostics
663 to a client if all backends fail.
665 --- 1.3.24 2012/02/23
667 zoom: empty ccl_map field-mappings disables CCL map.
669 zoom: fix Explain search that could return error if session was
672 --- 1.3.23 2012/02/10
674 zoom: returns Explain records for database IR-Explain---1. The
675 target profile records are converted to Explain records via XSLT.
677 session_shared: make error recovery configurable. Whether a search
678 is restarted on errors or not, is configurable by attribute "restart"
679 in element "resultset" in configuration.
681 session_shared: only relay init for first request. session_shared, for
682 each backend class, now only relays first init request (rather than all).
683 The module only needs to save init response info once. This avoids the
684 need to check for session max.
686 --- 1.3.22 2012/02/02
688 zoom: fix memory leaks.
690 session_shared: maximum number of sessons is configurable. Default
691 value is 100. Result-sets for backends without named result sets are
692 only re-used if databases is identical for a search. This is under the
693 assumption that performance may suffer for those backends when
694 changing the database for each search.
696 multi: combines diagnostics from all backends. All diagnostics from
697 backends are combined into multiple non-surrogate diagnostics; rather
698 than just one diagnostic from first backend.
700 --- 1.3.21 2011/12/27
702 zoom: relay realm to cproxy parameter file.
704 Configuration: Allow filter collection element inside route. This
705 makes it possible to include multiple filters at once.
707 zoom: nocproxy also disables urlRecipe.
709 --- 1.3.20 2011/12/21
711 zoom: return diagnostic if CQL sortby conv fails. Diagnostic Bib-1 214
712 "Illegal sort relation" is returned. Gets translated to SRU diagnostic
713 90: "Unsupported direction value".
715 zoom: honor database argument nocproxy. This disables creating a content
716 connector session (for non-CF targets, usually) and also relays nocproxy
717 as database argument to a CF target.
719 --- 1.3.19 2011/12/16
721 zoom: Multiple proxy hosts may be given for proxy rich database
722 parameter. List is comma separated.
724 http_file: decodes URI paths properly. Does not return 404: not found
725 if no prefix are matches. Instead packages are passed on.
727 --- 1.3.18 2011/12/08
729 zoom: content-{user,password,proxy} are passed on to content proxy
730 system and takes precedence over user,password,proxy .
732 sru_z3950: SRU extra argument x-log-enable=1 enables a search response
733 with a log element including log material from children filters. At
734 this point, only the zoom filter uses this log facility. It will
735 eventually be used by other filters as well. In particular it might be
736 useful for this feature to track all filters in used during a search.
738 zoom: for x-log-enable=1, APDUs sent by ZOOM C, records as received
739 and queries as they are manipulated are logged.
741 zoom: extend addinfo with native diagnostics. Diagnostics as received
742 by ZOOM C are put into addinfo - including ZOOM, HTTP, SRU and Bib-1
743 diagnostics. This indicates both a backend diagnostic and the original
746 zoom: default urlRecipe value is ${md-electronic-url}
748 zoom: target profile setting sruVersion is recognized.
750 --- 1.3.17 2011/11/17
752 zoom: log target profile record fetched (AKA Torus).
754 --- 1.3.16 2011/11/17
756 Change target profile parameter CfSubDb to CfSubDB.
758 --- 1.3.15 2011/11/12
760 zoom: bug fix: realm was relayed to CF targets by mistake (realm only
761 makes sense to the zoom module itself).
763 --- 1.3.14 2011/11/11
765 zoom: realm may be given as part of database.
767 --- 1.3.13 2011/10/26
769 Fix Origin class assigment method; was removd by mistake in 1.3.12.
771 --- 1.3.12 2011/10/26
773 zoom: database args x-name=value are passed through to backend database.
775 SRU filter: user may specify session ID that is passed to log entries
776 that follows. It is specified by using x-session-id in the SRU arguments.
778 zoom: fix null pointer reference which would occur for bad url parameter
779 inside "torus" or if url was not given.
781 --- 1.3.11 2011/09/09
782 Fix bug in filter session_shared where sessions would not expire
783 properly (session ttl). This in turn could make the target close the
784 connection before expected and session_shared would return diagnostic
785 2: system temporarily available.
787 --- 1.3.10 2011/09/09
789 zoom: new target profile setting: sortmap_field. If sortmap_field is given
790 the field is mapped to the value for the sortmap. Values not matching
791 sortmap_field are passed verbatim.
793 zoom: new target profile setting: sortStrategy. One of: "z3950", "type7",
794 "cql", "sru11" or "embed". The "embed" chooses type-7 or CQL sortby
795 depending on whether RPN or CQL is actually sent to the target.
799 zoom: urlRecipe result is stored in <pz:metadata type="generated-url">.
801 zoom: For content proxy authentication is stored in param name
802 "auth", instead of "authentication".
806 zoom: relay schema in SRU mode. Previously recordSchema was not affected
811 zoom: new target profile element literalTransform that holds XSLT
812 (encoded as string) for target. Only if present and non-zero length it is
813 considered present. This takes precedence over transform.
815 Don't rely on trang anymore for Git checkout builds. Configuration in etc
816 will only be properly validated if trang is available. From now on only
817 relax NC files are bundled with the source dist.
819 Updates to check for Boost unit test (autoconf stuff). On MacOSX this
820 component was not detected when it should be.
824 z3950_client: mark non-surrogate diagnostics from backend.
826 zoom: a proxy may be specified for HTTP fetch of target profiles.
830 Honor piggyback. Makes some SRU targets behave that insist on
831 maximumRecords > 0, but also increases performance.
835 Fix dlpath in installed metaproxy.xml for RPM/Deb package. The
836 file was not update for libdir/metaproxy4 in version 1.3.2.
840 Change location of Metaproxy modules from libdir/metaproxy to
841 libdir/metaproxy4. Directory libdir/metaproxy is also owned by
842 libmetaproxy3 and, thus, should not be used by libmetaproxy4.
844 New facility to dump APDUs from zoom filter. Enabled by
845 <log apdu="true"/> in the zoom filter configuation.
847 zoom filter bug fix: SRU diagnostics received from backend was
848 not properly converted to Bib-1 diagnostics.
850 Package metaproxy depends on libmetaproxy4, same version.
854 zoom: fix a bug WRT passing authentication parameters to backends.
858 Fixes for windows Makefile.
860 --- 1.2.10 2011/07/25
862 Change major version of metaproxy library from 3 to 4. This in turn
863 makes new package names for Debian and RPM.
867 zoom: enable marc-8 encoding by default for usmarc and opac (in pz2
870 zoom: configurable element sets for record transforms.
872 zoom: the target profile based transform is specified by element_transform
873 in element torus of of the ZOOM filter configuration ; default value
874 is "pz2". Target profile based retrieval is specified by element_raw
875 in configuration. It will perform same steps, but omit the XSL transform.
876 Default value is "raw".
878 zoom: element set is omitted if not set in profile. But only if pz2
879 transform is in effect. Previously the default element set was to "F".
881 zoom: For non-CF targets database arguments are parsed. User may supply
882 db,user=myuser&password=mypass for non-CF targets. These values override
883 what's given the authentication from the target profile.
885 session_shared: fix reference to freed memory. Would occur if a search
886 response had non-surrogate diagnostics.
890 Route may be given for each port in frontend_net.
894 Documentation for zoom filter. Local target profiles may be specified.
896 Fixes for zoom filter.
900 First version with zoom filter.
904 Filter z3950_client may be configured to always send a close APDU
905 to backend target when connection/session is closed. This will only
906 happen if close APDU is not already sent. Enabled by configuration
907 for z3950_client (force_close).
909 Filter virt_db and multi: relay close APDU.
911 Filter virt_db and multi: relay init size parameters
912 preferredMessageSize and maximumRecordSize.
914 Filter sru_z3950: increase init sz parameters from 1MB to 10 MB.
918 RPM package for Metaproxy works for both SLES11 and Centos 5.5.
920 metaproxy-config: exec_prefix, libdir, includedir. Use these variables
921 as determined by configure.
923 RPM: Release includes 'indexdata' name. Use indexdata in release name so
924 this package can be distinguished from other vendors.
928 Fix filter multi: relay idAuthentication parameters.
932 Add metaproxy-config for returning compiler flags, libraries.
936 Fix --with-boost=PREFIX .
940 session_shared: fix use of maintenance thread.
942 Introduce 'start' method for filters and routers. It gets called after
943 configure and after fork, but before processing. This changes API -
944 from libmetaproxy2 to libmetaproxy3.
948 session_shared: ensure backend session is closed if init rejected
951 z3950_client: fix NULL ptr reference that could occur if two clients
952 connected concurrently and if max-sockets was in effect.
956 Fix bug 3497 - Metaproxy unstable while stopping.
958 Fix bug 3495 - SEGV in SRU filter.
962 Filter multi throws diagnostic 'Present Out of Range' when
963 appropriate - rather than returning 0 records.
965 Filter virt_db: fix bad result reuse. Could happen if a result
966 was overriden and a backend did not supported named result sets.
970 Filter log: category access logs diagnostics even if searchStatus
971 or presentStatus is 'success'.
975 The SRU to Z39.50 filter does repeated Z39.50 present requests
976 to fetch all records. Needed when a Z39.50 server returns partial
977 results (due to message size limits).
981 Metaproxy now kills all child processes that are spawned by
982 modules (in case of fork, exec).
986 Debian package now installs /etc/metaproxy/metaproxy.xml which
987 includes all XML files /etc/metaproxy/filters-enabled .
988 The include facility uses YAZ' yaz_xml_include_simple (YAZ 4.0.1).
992 Package based on YAZ version 4 and YAZ++ 1.2.0. It now includes a
993 development package to facilitate 3rd party Metaproxy modules.
995 --- 1.0.23 2010/01/04
997 Filter virt_db: Close backend filter session when Init rejected is received
998 from it (in which case it's not really closed yet). This will ensure we don't
999 run out of resources such as FDs in this case.
1001 sru_z3950 filter: Accept any database (including those not listed).
1003 --- 1.0.22 2009/12/03
1005 Prepare for 64-bit YAZ. yazproxy will still work with YAZ++ 1.1.4 or
1006 later which means YAZ 3.0.47 or later.
1008 --- 1.0.20 2009/11/19
1010 For filter virt_db, the database is a glob pattern and the virtual
1011 database sections are consulted in the order given.
1013 --- 1.0.19 2009/07/08
1015 For filter multi, the target (for routing) may be given as a glob-pattern.
1017 More documentation for filters virt_db and multi.
1019 Update schema to allow for no database in sru_z3950 filter.
1021 --- 1.0.18 2009/06/30
1023 Added limit filter to put sleep (penalty) for heavy use.
1025 Filter frontend_net may be configured to limit the number of new connections
1026 from same IP to some value (connect-max).
1028 Fixed the load_balance filter.
1030 --- 1.0.17 2009/06/16
1032 Fix path for metaproxy executable for Debian init.d script.
1034 --- 1.0.16 2009/06/10
1036 SRU to Z39.50 filter honors x-username and x-password. If only
1037 x-username is given that translates to open authentication (Z39.50v2). If
1038 both x-username and x-password is present that translates to idPass
1039 authentication (Z39.50v3).
1041 New facility to change current working directory (-w).
1043 Update to upstream skeleton of init.d script. Should fix bug #2619.
1045 Filter session_shared now caches records (used to only cache connections
1048 Filter session_shared now invalidates a Z39.50 session if a server
1049 returns -1 hits. This facility was also part of yazproxy and gets around
1050 a bug in Voyager-based Z39.50 servers.
1052 --- 1.0.15 2008/11/18
1054 Fixed reference counting bug in Z39.50 client module (could cause SEGV).
1056 --- 1.0.14 2008/06/09
1058 Fixed the value of SRU record schema in searchRetrieve response. It was set
1059 to a fixed value of "dc" before.
1061 Serialize identical SRU requests. This is useful if HTTP client software
1062 fires identical requests against metaproxy.
1064 Allow Z39.50 target to be specified for SRU requests by using SRU extra
1065 parameter x-target. Allows SRU to contact arbitrary Z39.50 targets and
1066 avoid static configuration. This facility is handled by the sru_z3950 module
1067 and the z3950_client module.
1069 Allow maximum number of sockets to be used for a Z39.50 client by the
1070 use of SRU extra parameter x-max-sockets. This facility is handled by the
1071 sru_z3950 module and the z3950_client module.
1073 --- 1.0.13.1 2008/02/29
1075 Simplified check for Boost libraries.
1077 --- 1.0.13 2008/02/29
1079 First Debian package.
1081 The sru_z9350 filter now recognizes SRU parameter z-target as being
1082 a ZURL of the form host/database .
1084 Mergetype may be specified for filter 'multi'.
1086 --- 1.0.12 2007/09/19
1088 Fixed problem in Makefile WRT library specifictions. This could produce
1089 linker errors (when they should not happen).
1091 Fixed bug #1341: MetaProxy returning different results. Problem was that
1092 fix-up of record database did not normalize the database name.
1094 Documentation updates for Windows compilation.
1096 --- 1.0.11 2007/06/14
1098 Fixed problem with logfile being truncated.
1100 --- 1.0.10 2007/05/23
1102 Fixed bug #1136: Access rights not enforced.
1104 Extension for log module. The log category 'access' logs more details.
1105 New category 'user-access' added which is simlar to 'access' but adds
1106 the Z39.50 user as for all entries in a session.
1110 Added support for configurable default/force target/vhost for module Z39.50
1113 --- 1.0.8 2007/01/25
1115 Implemented filter, session_shared, which optimizes usage of Z39.50
1116 sessions and result sets.
1118 New filter, record_transform, which converts MARC/XML records.
1120 New filter, sru_z3950, which converts SRU to Z39.50 packages.
1122 New filter, load_balance, in development.
1124 New filter, zeerex_xplain.
1126 XML framework for config files started.
1128 Master RelaxNG Compact schema's are found in xml/schema/*.rnc,
1129 RelaxNG XML schemas and XML Schema's are generated from RNC syntax.
1130 XML config files are checked against RNG and XML Schema's.
1132 XSLT transformation framework added in xml/xslt/*.xsl, consisting mainly of
1133 LOC Marc21 stylesheets found at http://www.loc.gov/marcxml/xslt.
1134 Added stylesheet explain2cqlpqftxt.xsl which transforms a standard SRU ZeeReX
1135 explain record to YAZ CQL-to-PQF text config file.
1137 --- 1.0.7 2006/11/07
1139 Added 'timeout' setting for filter frontend_net which specifies the number
1140 of seconds a session is idle before it is closed. Default timeout is
1143 --- 1.0.6 2006/07/07
1145 Database name in records returned set for virt_db/multi filters.
1147 Filter session_shared now functional.
1149 Log filter can be configured to write to a given file using 'filename'
1150 element. Also information category can be specified with 'category'. If
1151 filename is omitted, the log filter writes to stdout. See etc/config5.xml
1154 --- 1.0.5 2006/05/16
1156 Fixed compilation on Windows.
1158 --- 1.0.4 2006/05/16
1160 Added documentation for the hidenavailable option for the multi filter.
1162 --- 1.0.3 2006/05/16
1164 Fixed bug #573: Hide errors for individual servers. If the element
1165 'hideunavailable' is given in the configuration, individual servers
1166 being unavailable are hidden (unless all are unavailable).
1168 Fixed bug #574: Database names are recognised case-sensitively.
1170 Fixed bug #567: Fix up database name in Name-Plus-Record.
1172 Fixed bug #568: Update win/makefile for VS 2005.
1174 Fixed bug #569: Some options throws unknown exception.
1176 --- 1.0.2 2006/04/28
1178 More information about virtual hosts. The 'etc' directory is part of the
1181 --- 1.0.1 2006/04/27
1183 Build instructions for Windows. NMake makefile part of distribution tar.
1185 --- 1.0.0 2006/04/24
1189 Filters functional: auth_simple, backend_test, frontend_net, http_file,
1190 log, multi, query_rewrite, template, virt_db, z3950_client.
1192 Filters in development: session_shared.
1194 Pseudo-filters: template, dl