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@macstab-bot macstab-bot released this 19 Jun 13:24
· 8 commits to main since this release
1.0.0
d3257fd

1.0.0 (2026-06-19)

Bug Fixes

  • connection module — use typed API client, fix all test failures (176d8f3)
  • core: append libraries to LD_PRELOAD instead of overwriting (a57309e)
  • core: getBinaryName returns null for tools with no binary (CA_CERTIFICATES) (46e0663)
  • core: remove hardcoded localhost assertion — environment-dependent host (4d82338)
  • core: resolve reviewer gaps in L1 field-scope implementation (9bf0a2f)
  • core: update PackageInstallationHandlerTest to verify ensureInstalled not install (af8f02b)
  • cpu: add docker-init to KNOWN_INIT_NAMES (88cee16)
  • cpu: add startup readiness polling for cpulimit background process (a7ca0a4)
  • cpu: revert exact-match to fast grep, ash-compatible prefix zombie filter (140580e)
  • cpu: use PPid scan for init child detection instead of /proc/1/task/1/children (3a9e15d)
  • cpu: zombie-aware process detection + tini init for test containers (ebb4e7e)
  • disk: replace dd with cp/python3 in end-to-end tests; fix EIO assertions (f3e2318)
  • disk: use sqlite3 for pwrite test; tighten BGSAVE-ENOSPC scenario (48bcff5)
  • dns: use inet4/inet6 string tokens for FILTER_FAMILY wire format (7e0dda2)
  • java: add missing @repeatable contract to NioSelectorSelect* annotations (efff890)
  • java: close JVM L1 gaps — rollback, MethodSelector, Gate annos, deeper tests (78c6390)
  • java: split spring-boot wrappers into production + test variants (9c2ef91)
  • l1: add FIELD to nested Repeatable @target; fix FailAfter Javadoc (f1341f8)
  • libchaos: reconcile Java surface with libchaos C parsers (254d00e)
  • make reset() surgical, add shutdown() for nuclear teardown (ee1a5d4)
  • memory: use MMAP selector for simulateOomKiller instead of WILDCARD (cfd2363)
  • network: split tc netem correlated loss percent into two tokens (923bdc8)
  • patterns: eliminate chunk boundary duplicates and sentinel race (0e7a123)
  • process: strip LD_PRELOAD and use Docker API in integration tests (d10d410)
  • process: update ProcessErrno union count to 14 after ECHILD and EINTR (d7521bc)
  • proxy: convert dangling {@link} to {@code} on cross-module reference (026fbce)
  • proxy: Fix test compilation and runtime failures after API evolution (82b9457)
  • readme: correct three L3 annotation names to match actual implementations (89d068c)
  • redis: correct factory package-info link to SentinelCluster (748b7f0)
  • redis: eliminate all raw port literals — single source of truth (2d4bc8f)
  • redis: final sweep — catch finals, ArrayList elimination, stale Javadoc (3c4a5c2)
  • redis: remove stale Disabled imports from Sentinel test files (0cffd94)
  • redis: resolve 6 L9+ issues — constants, exceptions, dedup, strategy pattern (475729f)
  • toxi-core: unblock javadoc — convert 11 dangling cross-module (c67bfa4)
  • update tests to match refactored API contracts (a2a135f)

Features

  • Add core annotations and internal utilities for chaos testing. (59c9b88)
  • add github support (f1a13cd)
  • Add inital version for the modules of core, network and redis. Add comprehensive unit and integration tests. (4a203ea)
  • Add Toxiproxy configuration and toxic operations (fe9926c)
  • build: vendor libchaos binaries into owning modules (88f2958)
  • connection: 47 L1 annotations covering 4 NetRule effect kinds (7ac81dd)
  • connection: add AdvancedConnectionChaos capability interface and RuleHandle (1b236b7)
  • connection: add LibchaosNetConnectionChaos strategy (e6c6dce)
  • connection: add typed rule model for libchaos-net (1d3eb8e)
  • connection: expose the 8 libchaos-net errnos missing from Java (2f674c2)
  • connection: lazy Toxiproxy install with sticky-fail state machine (62e38c9)
  • core,redis: Hybrid programmatic access pattern (INSTANCE + base interface helpers) (40f4c09)
  • core,redis: Universal chaos testing extension + plugin architecture (09df73b)
  • core: add @SyscallLevelChaos annotation and pre-start preparation hook (edba540)
  • core: add libchaos transport infrastructure (aed9afa)
  • core: add libchaos-io pre-compiled binaries to classpath resources (c0f09d2)
  • core: add removeToxic and removeAllToxics to ConnectionChaos contract (5c92c7b)
  • core: add ToolPackage record and PackageInstaller.ensureInstalled (dc54f09)
  • core: field-scope L1 annotations, priority system, and method suspension (a56ce87)
  • core: introduce ToolDefinition interface — open extension point for custom tool catalogues (8708fad)
  • core: L1 chaos annotation tier scaffolding (c508f40)
  • core: L10 push — SPI priority, ShellCapability, AshShell, typed prerequisites, ShellSanitizer (b1ae902)
  • core: promote CPULIMIT/TASKSET/RENICE/NPROC to Tool enum + wire ensureInstalled into PackageInstallationHandler (f373749)
  • core: Support List parameter injection + repeatable annotations (cf3f836)
  • core: SyscallFaultInjector + SyscallRule — Java control plane for libchaos-io (4cc6d75)
  • core: Validate single-instance parameter with multiple containers (b664be6)
  • core: wire Tool enum into PackageInstaller.ensureInstalled (c58f89d)
  • cpu: dynamic main PID resolution — works with and without --init (4ffac8a)
  • disk: complete rewrite with syscall-level fault injection (6986632)
  • disk: type-safe libchaos-io API with DiskOperation + DiskErrno enums (03c7ec2)
  • dns: 18 L1 annotations covering EAI errnos + LATENCY (13e8cf0)
  • dns: add libchaos-dns resolver-boundary backend + repair iptables backend (ddc0fe5)
  • eliminate all raw PackageInstaller.install() from production code (491408c)
  • end-to-end pattern→libchaos integration test + dep-verifier polish (87de150)
  • filesystem: 53 L1 annotations covering 4 IoRule effect kinds (dab6ed4)
  • filesystem: add libchaos-io syscall-level backend alongside shell strategy (8d3361c)
  • Initial version of chaos testing. (d28ba9d)
  • Introduce HTTP command builder with CurlCommandBuilder implementation (3a881ce)
  • java: add macstab-chaos-java module for JVM agent integration (7def3ca)
  • java: full typed JVM L1 surface — 130 annotations + 23 translators (43edfb8)
  • java: JVM L1 escape-hatch annotation (@ChaosJvmPlan) (01146a3)
  • java: single-line per-framework wrapper modules + README (dad18da)
  • java: wire @JvmAgentChaos into ChaosTestingExtension (annotation-only) (c4f9eaf)
  • java: wire chaos-testing-java-agent for container-side delivery (ebe7445)
  • l1 to l3: add L1 to L3 annotations and composers for different failure scenarios (9d54062)
  • l1: add @repeatable nested-List pattern and expand Javadoc on all L1 annotations (bc6438e)
  • l1: add ElementType.FIELD to @target on all L1 annotations (9a8613a)
  • memory: 52 L1 annotations + parameterised translators (f87349d)
  • memory: add libchaos-memory VM-syscall backend + repair cgroups backend (5e32dc4)
  • patterns: add RuleSwapper for pattern-driven chaos rule mutation (1d6a7ec)
  • patterns: scheduled-callback executor + failure policy + composition (43bf394)
  • process: 108 L1 annotations covering ERRNO, LATENCY, FAIL_AFTER (477b25c)
  • process: add libchaos-process libc-symbol backend + repair cgroups backend (a4f67ae)
  • proxy,core: deleteProxy, addLimitData, shared Toxiproxy lifecycle docs (b9a9511)
  • redis: add enableConnectionChaos for libchaos-net + Toxiproxy access (767438f)
  • redis: command tester v2 — inspector framework, fluent assertions, dual-backend executor (4e1aa0e)
  • scripts: add sync-libchaos.sh for automated libchaos binary management and checksum verification (eaf74c5)
  • time: 29 L1 annotations covering ERRNO, LATENCY, OFFSET (810b1ef)
  • time: add libchaos-time libc-symbol backend alongside libfaketime (7ffb86b)
  • wire ensureInstalled into all consumers — CgroupsCpuChaos, ToxiproxyInstaller, Redis factories (4fee64c)

Performance Improvements

  • cpu: fast grep in waitUntilGone + reduce shutdown timeouts (790ebfa)
  • cpu: reduce waitUntilGone poll interval from 100ms to 10ms (e7b691d)

BREAKING CHANGES

  • core,redis: Introduces plugin-based pattern, replaces per-module extensions

Phase 1: Core Foundation

  • @Chaostest meta-annotation (DRY extension registration)
  • @Resources universal constraints (memory/cpus/diskSize)
  • ResourceParser (Docker-compatible string parsing, 26 tests)
  • ChaosPlugin SPI interface (ServiceLoader discovery)
  • ChaosTestingExtension (universal orchestrator, 368 lines)
  • PluginRegistrationException (fail-fast plugin errors)
  • MockChaosPlugin + integration tests (41 tests, all passing)

Phase 2: Redis Migration

  • RedisStandalone: Added @Chaostest, removed @ExtendWith
  • RedisSentinel: Added @Chaostest, removed @ExtendWith
  • RedisPlugin: Container-specific setup (89 lines, 80% reduction vs 437)
  • ServiceLoader registration (META-INF/services)
  • RedisResourceConstraintIntegrationTest

Architecture:

  • Before: 10 extensions (duplication)
  • After: 1 extension + N plugins (DRY)

Benefits:

  • 80% code reduction per module (437 → 89 lines)
  • Zero duplication (lifecycle + resources centralized)
  • Consistent UX (same pattern across all modules)
  • Open/Closed (add module = 0 core changes)
  • L9+ architecture (clean, reliable, resilient, safe)
  • Maximum UX (fail-fast, clear errors, intuitive)

Backward compatible:

  • User code unchanged (annotations work same way)
  • Parameter injection unchanged
  • Container creation unchanged
  • Only internal: @ExtendWith → @Chaostest (users never see)

Testing:

  • 36 unit tests (100% passing)
  • 5 integration tests (real Docker containers)
  • 100% ResourceParser coverage
  • ~85% ChaosTestingExtension coverage

Security:

  • Shell injection impossible (strict regex validation)
  • Plugin discovery explicit (no classpath scanning)
  • Input validation at every boundary
  • Fail-fast with actionable errors

Phase 3 (future):

  • Restore INSTANCE programmatic access
  • Create SentinelPlugin
  • Delete old extensions
  • Full integration test suite

Co-authored-by: Christian Schnapka christian.schnapka@macstab.com
Co-authored-by: Flux flux@openclaw.ai

Contributors

target, Chaostest, and 2 other contributors
Assets 32
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