CHANGES.md

Zorka 2.0.2 (2023-12-18)

• JDK17 compatibility updates;
• update asm library;

Zorka 2.0.1 (2020-08-10)

• fix: error messages in UtilProcessorFn;

Zorka 2.0.0 (2020-04-03)

• fix: Prometheus scrapping mode;
• fix: zipkin/jaeger output;
• fix: TLS support for internal HTTP server;

Zorka 1.90.9 (2020-03-07)

• search functionality in memory chunk store;
• simplify collector: keep symbols along with trace chunk data;
• various fixes;

Zorka 1.90.8 (2020-02-20)

• collector: trace data compression;
• new functions for password encryption;
• fix: built-in tracer exclusions not loading properly;

Zorka 1.90.7 (2020-02-11)

• update: ASM 7.2 (code compiled by JDK13 compiler now works);
• thread monitoring: ranking with cpu utilization;
• thread monitoring: thread contention log;
• generic servlet container instrumentation;
• remove snmp trapper support;
• remove nagios support;
• remove normalizers framework;
• tracing context propagation compatible with Zipkin/Jaeger/W3;
• zipkin trace output (v2, http/json);
• simplify agent-collector interaction & collector side data model;

Zorka 1.90.6 (2019-01-19)

• fix bugs causing some classes to be skipped by instrumentation engine;
• SLA calculation code removed from ZorkaStats;
• new NIO based network server (based on http-kit);
• Prometheus scrapping mode - rudimentary implementation;
• fix: request parsing for Zabbix 4.0;
• zico2: switched to binary agent-collector protcol (no base64 anymore);
• zico2: optional TLS encryption between agent and server;
• new HTTP client code with TLS support and keep-alive;

Zorka 1.90.5 (2018-11-05)

• agent registration from command line;
• hystrix instrumentation & dtrace support;
• spring AMQP instrumentation & dtrace support;
• internal: intra-thread communication via SpyStateShelf;
• internal: preliminary TLS support, http service implementation;
• fix: NPEs in SpyClassResolver causing some classes being not instrumented;
• fix: jvm http client now working properly;

Zorka 1.90.4 (2018-09-24)

• new high performance tracer implementation (experimental, not yet fully stable);
• automated tracer tuning;
• flex messaging library support;
• fixes: agent config reload;
• reinstrument classes in background;
• distributed tracing: quarts;

Zorka 1.90.3 (2018-08-16)

• distributed tracing support (see docs);
• spring.version option - switch between spring3 and spring5;
• cleanups, cut useless dependencies and components (zorka-viewer, fest);

Zorka 1.90.2 (2018-06-14)

• Fix: try/catch on constructors generated verify errors on JDK8+;
• Fix: return probes for long and double types caused verify errors;
• Fix: generate proper stack frames for constructors;
• JDK9, JDK10, JDK11, GraalVM now works properly (tested only on Tomcat);
• pre- and post- instrumentation bytecode dump functionality (useful for debugging);
• new tracer function: force trace record to be always submitted;

Zorka 1.90.1 (2018-05-04)

• this is development version: things may change in unpredictable ways;
• released along with next gen ZICO collector (development snapshot);

Zorka 1.1.1 (2018-02-24)

• this is development version: things may change in unpredictable ways;
• automatic detection of application servers and frameworks;
• environment variables, system properties, references in zorka.properties;
• description field in zorka metrics (useful for autodiscovered items);
• InfluxDB integration (HTTP push via perfmon library);
• use slf4j instead of custom logging API (jarjar moves all classes aside, so no conflicts should occur);
• OpenTSDB integration (HTTP push via perfmon library);
• Graphite integration (TCP/pickle push via perfmon library);
• Prometheus integration (via Push Gateway);
• include BSH and libsnmp into agent codebase;
• HTTP/CBOR tracer output - fixes and protocol changes;

Zorka 1.0.16 (2017-11-22)

• update: ASM 6.0;
• Wildfly 8.x/9.x: catch HTTP traces in the lowest layer of Undertow;
• Wildfly 10.x, 11.x support;
• Alfresco 2017+ support;
• HTTP/CBOR tracer output (new CBOR collector is yet to be released);
• fixes & performance improvements for active checks (by dd00ff@github);
• add Zabbix host metadata to default and sample property files;
• detect and skip instrumentation if argument index out of scope;
• templates for Zabbix 3.x + support for automatic registration;
• new tracer.min.trace.calls setting to ease tracer tuning;
• Various fixes;

This version is released after a long break. As full QA/testing process hasn't been fully restarted, please test agent in a non-production environment first.

Zorka 1.0.15 (2015-11-29)

• Minor fixes for ZICO UI;
• Unboundid LDAP SDK support;
• Fix/extend nagios scipts;
• Preliminary support for Clojure+Ring/Jetty;

Zorka 1.0.14 (2015-08-29)

• Apache HTTPClient support
• various fixes

Zorka 1.0.13 (2015-05-20)

• LDAP login for ZICO collector

Zorka 1.0.12 (2015-03-01)

• get rid of gson dependency;
• various fixes;

Zorka 1.0.11 (2015-02-01)

• automatically determine stack frame computation (JDK7+);
• agent: fixes (MySQL, thread pools);
• collector: fixes (NPE when resetting password);

Zorka 1.0.10 (2015-01-01)

• zorka: performance SLA calculation for ZorkaStats;
• zico: reduce memory consumption;
• several bufixes;

Zorka 1.0.9 (2014-10-13)

• fix: proper ASM5 instruction set version in ASM class reader;
• ZICO: pivot (aggregate) view of collected traces;
• zico-util: improve parallelism of index rebuild op (by sorting host dirs by size);

Zorka 1.0.8 (2014-09-29)

• active checks: fixes, new templates;
• ZICO UI: many fixes, regexp search;

Zorka 1.0.7 (2014-09-05)

• more fixes to ZICO collector;
• HTTP/SQL/EJB tagging and classification;
• active checks for Zabbix (makotoiguchi);

Zorka 1.0.6 (2014-07-27)

• bugfix release

Zorka 1.0.5 (2014-07-22)

• CAS integration;
• fixes and refactorings;

Zorka 1.0.4 (2014-05-27)

• lots of UI bugs fixed after scrapping GXT;
• use REST+JSON for communication between UI and collector (get rid of RequestFactory);
• ZICO collector now requires Java 8 to work;

Zorka 1.0.3 (2014-05-19)

• enhance nagios commands framework, predefined commands for JVM, HTTP, SQL etc.
• update dependencies: asm, fressian;
• revamp ZICO UI (get rid of GXT, upgrade to GWT 2.6, Jetty 9);

Zorka 1.0.2 (2014-05-03)

• hide BSH scripts inside agent jar (yet scripts/ directory for user scripts still works)
• JMX values scanner for Nagios - with aggregates and other features;

Zorka 1.0.1 (2014-03-31)

• grouping hosts in ZICO collector;
• bugfixes;

Zorka 1.0.0 (2014-03-01)

• support for JDK 8 (generating stack maps for instrumented code);
• Tomcat 8 now officially supported;
• UI: filter traces by timestamp, other EQL fixes;
• UI: fixes for safe mode and host properties editing;

Zorka 0.9.19 (2014-02-22)

• Glassfish 4.0 support;
• agent: util.tapInputStream(), util.tapOutputStream() for wiretaping streams;
• SOAP monitoring: support for Apache CXF framework;
• REST monitoring: general config + support for Apache CXF framework;

Zorka 0.9.18 (2014-02-15)

• SOAP monitoring (with Axis 1.x support, more to come);
• Wildfly 8.0 + Undertow support;
• JBoss Management (DMR) access via zorka agent;

Zorka 0.9.17 (2014-02-08)

• support for Spring MVC tracing/monitoring;
• support for Quartz tracing/monitoring
• fix: data corruption in ZICO collector;

Zorka 0.9.16 (2014-02-01)

• fixes for agent operating in Windows env (paths, log buffering etc.);
• various collector / UI fixes;
• JMS monitoring support;
• file/zabbix/syslog trappers for EJB/HTTP/SQL/JMS slow/error query logs;
• rudimentary application auditing framework (only JBoss7 supported at the moment);

Zorka 0.9.15 (2014-01-15)

• lot of fixes, collector and collector UI;

Zorka 0.9.14 (2014-01-02)

• collector: rewrite trace indexing and search engine; use MapDB+RDS instead of SQL;
• lots of fixes;

Zorka 0.9.13 (2013-12-16)

• agent: online reconfiguration (via zorka.reload[] or built in MBean);
• agent: jetty 6.x support script;
• collector: user database with access control to particular hosts for ordinary users;
• collector: faster method call tree;
• lots of small fixes as usual;

Zorka 0.9.12 (2013-11-20)

• agent: websphere support (HTTP, EJB3 tracing, PMI access, rudimentary PMI templates for zabbix);
• agent: MuleESB support (tracing flows, dispatchers,flow components, maintaining ZorkaStats, zabbix templates etc.);
• agent: LDAP monitoring (tracing LDAP searches, maintaining ZorkaStats);
• agent: improve HTTP tracing (headers, cookies, redirections);
• agent: revive and extend zabbix templates for JBoss, Tomcat etc.
• agent: improve ZICO performance with bulk ZICO transfers;
• agent: prioritized class/method matchers;
• agent: zorka.require() function to include scripts from other scripts;
• agent: get rid of profiles, rework scripts to be included directly from zorka.properties;
• agent: tracer tuning embedded directly in agent scripts (no need for manual tuning for every new application);
• agent: instrumentation engine statistics: time spent on matching, instrumentation etc. (available as ZorkaStats);
• agent: throughput monitoring implemented in ZorkaStats;
• collector: asynchronous DB writer for TRACES table to eliminate lags caused by MySQL hiccups;
• collector: admin and viewer roles for collector;
• collector: option to disable/enable collection from particular hosts available from UI;
• collector: case-insensitive search in trace detail panel (full-text only for now);
• lots of small fixes;

Zorka 0.9.11 (2013-10-21)

• agent: checksum calculating spy processors;
• agent: trace attribute propagation functions;
• collector: new query language for searching methods inside trace;
• collector: lots of UI fixes and polishes;
• collector: enhance self-monitoring (trace and monitor submission chain);

Zorka 0.9.10 (2013-09-30)

• rename zorka-central -> zico;
• match classes and methods by interface (with recursion);

Zorka 0.9.9 (2013-09-15)

• many improvements and fixes in zorka-central;
• unified scripts and for JDBC monitoring;

Zorka 0.9.8 (2013-09-01)

• zorka-central - (rudimentary) network trace collector;
• agent profiles - multiple script configuration in single directory;
• usual fixes;

Zorka 0.9.7 (2013-07-07)

• use fressian format for saving traces;
• congestion monitoring (via ZorkaStats);
• lots of fixes;

Zorka 0.9.6 (2013-05-01)

• better security with zorka.allow() function;
• load additional property files with zorka.loadCfg() function;
• programmatic tracer attribute setting with tracer.newAttr() function;
• lots ot fixes

Zorka 0.9.5 (2013-04-15)

• hiccup meter (based on Azul's hiccup metering utility);
• tracer support for WSO2;
• JBoss7 domain mode support (zorka home dir now can be passed as system property);
• microsecond and nanosecond resolution for MethodCallStats;
• proper query execution timeout handling in BSH agent;

Zorka 0.9.4 (2013-04-02)

• unify argument ordering of Spy;
• sample JDBC script for PostgreSQL (long queries, trace attrs, stats);
• refactor zorka-common+zorka-agent -> zorka-core+zorka-agent;
• bugfixes;

Zorka 0.9.3 (2013-03-23)

• support for JDK5;
• fixes;

Zorka 0.9.2 (2013-03-11)

• enhance trace viewer, get rid of unnecessary dependencies;
• new 'local max' attribute maintained by method call statistics;

Zorka 0.9.1 (2013-02-28)

• zorka diagnostics (with zabbix template) - mbean for monitoring agent health
• lots of fixes for viewer and agent itself;

Zorka 0.9 (2013-02-05)

• tracer enhancements and bugfixes;
• performance metrics collector that adds collected data to tracer files;
• new JMX query / object graph traversal DSL;
• zabbix.discovery() now uses JMX query DSL;
• convenient API for accessing zorka.properties settings from BSH scripts;

Zorka 0.8 (2013-01-20)

• rudimentary method call tracer implemented;
• zorka-viewer: trace files viewer;

Zorka 0.7 (2013-01-06)

• refactor spy API to use string keys (instead of convoluted stage-slot convention);
• get rid od ON_COLLECT stage, use asynchronous queue collector;
• refactor logger to act as aggregator of (attachable) trappers, remove loggger <-> file trapper redundancies;
• lots of redundant code eliminated (eg. threading code in trappers, rank listers, agent integrations etc.)
• lots of cleanups, javadocs, bugfixes, simplify package structure and limit inter-package dependencies;
• performance optimization of ZorkaStatsCollector (and removal of JmxAttrCollector);
• rudimentary stress testing / microbenchmarking framework implemented;
• spy now supports OSGi-based frameworks (eg. WSO2 Carbon, see sample script on how to configure it);
• remove custom pool executors, use standard ThreadPoolExecutor instead;
• support for matching classes and methods by annotations;

Zorka 0.6 (2012-12-22)

• normalization of xQL queries (all major query languages);
• normalization of LDAP search queries;
• file trapper (logs events to files instead of syslog/zabbix/SNMP);
• composite processing chains and comparator filters;
• zorka API overhaul (yet more refactoring are on the way);

Zorka 0.5 (2012-12-07)

• syslog trapper support;
• snmp trapper support (traps and value get interface);
• zabbix trapper;
• config scripts and zabbix templates for JBoss 7;
• documentation: converted to md format; more interesting examples (eg. CAS auditing);

Zorka 0.4 (2012-11-26)

• documentation updates, cleanups and fixes (as usual);
• nagios NRPE protocol support;
• thread rank ported to new ranking framework;
• new - circular buffer aggregate;

Zorka 0.3 (2012-11-10)

• basic ranking framework (working with Zorka MethodCallStats);
• implement missing collectors of ZorkaSpy;
• implement missing processors in ZorkaSpy;
• support for IBM JDK and JRockit;
• documentation updates, cleanups and fixes;

Zorka 0.2 (2012-11-04)

• new ZorkaSpy instrumentation engine (incomplete, yet functional);
• get rid of lib/*.jar files, embed them into agent.jar;
• get rid of j2ee dependencies (use reflection instead);
• remove zorka5.sar module and jboss dependencies (use instrumentation instead);
• documentation updates, many little cleanups and fixes;

Zorka 0.1 (2012-09-19)

• initial release;
• zabbix integration;
• basic functions for accessing JMX data;
• rudimentary instrumentation engine (ZorkaSpy);