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* Dashboard overhaul, compute integration (#814)Stefan Boberg12 days4-19/+99
| | | | | | | | | | - **Frontend dashboard overhaul**: Unified compute/main dashboards into a single shared UI. Added new pages for cache, projects, metrics, sessions, info (build/runtime config, system stats). Added live-update via WebSockets with pause control, sortable detail tables, themed styling. Refactored compute/hub/orchestrator pages into modular JS. - **HTTP server fixes and stats**: Fixed http.sys local-only fallback when default port is in use, implemented root endpoint redirect for http.sys, fixed Linux/Mac port reuse. Added /stats endpoint exposing HTTP server metrics (bytes transferred, request rates). Added WebSocket stats tracking. - **OTEL/diagnostics hardening**: Improved OTLP HTTP exporter with better error handling and resilience. Extended diagnostics services configuration. - **Session management**: Added new sessions service with HTTP endpoints for registering, updating, querying, and removing sessions. Includes session log file support. This is still WIP. - **CLI subcommand support**: Added support for commands with subcommands in the zen CLI tool, with improved command dispatch. - **Misc**: Exposed CPU usage/hostname to frontend, fixed JS compact binary float32/float64 decoding, limited projects displayed on front page to 25 sorted by last access, added vscode:// link support. Also contains some fixes from TSAN analysis.
* Eliminate spdlog dependency (#773)Stefan Boberg12 days4-42/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Removes the vendored spdlog library (~12,000 lines) and replaces it with a purpose-built logging system in zencore (~1,800 lines). The new implementation provides the same functionality with fewer abstractions, no shared_ptr overhead, and full control over the logging pipeline. ### What changed **New logging core in zencore/logging/:** - LogMessage, Formatter, Sink, Logger, Registry - core abstractions matching spdlog's model but simplified - AnsiColorStdoutSink - ANSI color console output (replaces spdlog stdout_color_sink) - MsvcSink - OutputDebugString on Windows (replaces spdlog msvc_sink) - AsyncSink - async logging via BlockingQueue worker thread (replaces spdlog async_logger) - NullSink, MessageOnlyFormatter - utility types - Thread-safe timestamp caching in formatters using RwLock **Moved to zenutil/logging/:** - FullFormatter - full log formatting with timestamp, logger name, level, source location, multiline alignment - JsonFormatter - structured JSON log output - RotatingFileSink - rotating file sink with atomic size tracking **API changes:** - Log levels are now an enum (LogLevel) instead of int, eliminating the zen::logging::level namespace - LoggerRef no longer wraps shared_ptr - it holds a raw pointer with the registry owning lifetime - Logger error handler is wired through Registry and propagated to all loggers on registration - Logger::Log() now populates ThreadId on every message **Cleanup:** - Deleted thirdparty/spdlog/ entirely (110+ files) - Deleted full_test_formatter (was ~80% duplicate of FullFormatter) - Renamed snake_case classes to PascalCase (full_formatter -> FullFormatter, json_formatter -> JsonFormatter, sentry_sink -> SentrySink) - Removed spdlog from xmake dependency graph ### Build / test impact - zencore no longer depends on spdlog - zenutil and zenvfs xmake.lua updated to drop spdlog dep - zentelemetry xmake.lua updated to drop spdlog dep - All existing tests pass, no test changes required beyond formatter class renames
* logging config move to zenutil (#754)Stefan Boberg2026-02-131-6/+6
| | | made logging config options from zenserver available in zen CLI
* OTLP/trace improvements (#717)Stefan Boberg2026-01-191-4/+3
| | | | | | | This PR brings over some changes made to avoid performing setup for otel instrumentation if we are not sending otel information anywhere anyway. It also adds the ability to configure an OTLP endpoint on the command line using `--otlp-endpoint=<URI>`. Bear in mind that OTLP support is still not officially supported so this should not be used in production at this stage.
* asio/http optimizations (#449)Stefan Boberg2026-01-141-27/+2
| | | | | | | This change primarily introduces improved logic for dealing with sending data from file references. This is intended to reduce the amount of memory-mapping we end up doing when sending data from files. Windows now uses `TransmitFile` to send file data more efficiently using kernel-side I/O, but Linux/Mac basically behaves as before since they don't offer any true async file I/O support via asio. This should be implemented separately using a background I/O thread pool. This PR also includes improved memory management for http/asio with reduced allocation counts, and a fix for a potential use-after-free in very high load scenarios.
* logging improvements (#664)Stefan Boberg2025-11-242-20/+23
| | | | | * Eliminate spurious `FlushFileBuffers` calls on Windows by tracking writes * Make cache log file creation optional
* add support for OTLP logging/tracing (#599)Stefan Boberg2025-10-223-0/+159
| | | | | | | | - adds `zentelemetry` project which houses new functionality for serializing logs and traces in OpenTelemetry Protocol format (OTLP) - moved existing stats functionality from `zencore` to `zentelemetry` - adds `TRefCounted<T>` for vtable-less refcounting - adds `MemoryArena` class which allows for linear allocation of memory from chunks - adds `protozero` which is used to encode OTLP protobuf messages
* restructured zenserver configuration (#575)Stefan Boberg2025-10-152-3/+3
| | | this breaks out the configuration logic to allow multiple applications to share common configuration and initialization logic whilst customizing chosen aspects of the process
* move all storage-related services into storage tree (#571)Stefan Boberg2025-10-141-1/+1
| | | | | | * move all storage-related services into storage tree * move config into config/ * also move admin service into storage since it mostly has storage related functionality * header consolidation
* rework `--quiet` zenserver option add `--noconsole` option (#477)Dan Engelbrecht2025-08-261-0/+1
| | | | - Improvement: Changed zenserver `--quiet` option to suppress INFO level messages and below to surface startup and runtime errors - Feature: Added `--noconsole` option that suppresses all output to standard out, this works as the `--quiet` option used to work
* added support for dynamic LLM tags (#245)Stefan Boberg2024-12-022-3/+19
| | | | | * added FLLMTag which can be used to register memory tags outside of core * changed `UE_MEMSCOPE` -> `ZEN_MEMSCOPE` for consistency * instrumented some subsystems with dynamic tags
* Insights-compatible memory tracking (#214)Stefan Boberg2024-11-251-0/+5
| | | | | | | | | | | | | This change introduces support for tracing of memory allocation activity. The code is ported from UE5, and Unreal Insights can be used to analyze the output. This is currently only fully supported on Windows, but will be extended to Mac/Linux in the near future. To activate full memory tracking, pass `--trace=memory` on the commandline alongside `--tracehost=<ip>` or `-tracefile=<path>`. For more control over how much detail is traced you can instead pass some combination of `callstack`, `memtag`, `memalloc` instead. In practice, `--trace=memory` is an alias for `--trace=callstack,memtag,memalloc`). For convenience we also support `--trace=memory_light` which omits call stacks. This change also introduces multiple memory allocators, which may be selected via command-line option `--malloc=<allocator>`: * `mimalloc` - mimalloc (default, same as before) * `rpmalloc` - rpmalloc is another high performance allocator for multithreaded applications which may be a better option than mimalloc (to be evaluated). Due to toolchain limitations this is currently only supported on Windows. * `stomp` - an allocator intended to be used during development/debugging to help track down memory issues such as use-after-free or out-of-bounds access. Currently only supported on Windows. * `ansi` - fallback to default system allocator
* improved assert (#37)Dan Engelbrecht2024-04-041-1/+1
| | | | - Improvement: Add file and line to ASSERT exceptions - Improvement: Catch call stack when throwing assert exceptions and log/output call stack at important places to provide more context to caller
* remove redundant json11 includesStefan Boberg2024-03-261-1/+0
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* consistent paths encoding (#24)Dan Engelbrecht2024-03-251-2/+2
| | | | * Don't encode filesystem path to UTF8 unless stored in compactbinary string * Be consistent where we encode/decode paths to UTF8
* logging configuration via command line options (#589)Stefan Boberg2023-12-061-0/+4
| | | | | | | with these changes it is possible to configure loggers on the command line. For instance: `xmake run zenserver --log-trace=http_requests,http` will configure the system so that the `http_request` and `http` loggers are set to TRACE level
* spdlog implementation hiding (#498)Stefan Boberg2023-11-062-1/+8
| | | | | | | | | this change aims to hide logging internals from client code, in order to make it easier to extend and take more control over the logging process in the future. As a bonus side effect, the generated code is much tighter (net delta around 2.5% on the resulting executable which includes lots of thirdparty code) and should take less time to compile and link. Client usage via macros is pretty much unchanged. The main exposure client code had to spdlog internals before was the use of custom loggers per subsystem, where it would be common to have `spdlog::logger` references to keep a reference to a logger within a class. This is now replaced by `zen::LoggerRef` which currently simply encapsulates an actual `spdlog::logger` instance, but this is intended to be an implementation detail which will change in the future. The way the change works is that we now handle any formatting of log messages in the zencore logging subsystem instead of relying on `spdlog` to manage this. We use the `fmt` library to do the formatting which means the client usage is identical to using `spdlog`. The formatted message is then forwarded onto any sinks etc which are still implememted via `spdlog`.
* eliminate redundant logging code (#499)Stefan Boberg2023-10-252-721/+33
| | | | | | | | | zenutil and zenserver both contain very similar logging setup code and this change aims to make them have most code in common. * fullformatter/jsonformatter/RotatingFileSink are moved into dedicated header files in zenutil * zenserver `InitializeLogging`/`ShutdownLogging` are renamed `InitializeServerLogging`/`InitializeServerLogging` * these now call into the common zenutil `BeginInitializeLogging`/`FinishInitializeLogging` in addition to setting up server custom logging * `std::filesystem::path` is now logged after stripping any `\\\\?\\` prefix for readability
* New rotating file logger that keeps on running regardless of errors (#495)Dan Engelbrecht2023-10-251-13/+272
| | | * New rotating file logger that keeps on running regardless of errors
* restructured zenhttp (#472)Stefan Boberg2023-10-132-0/+254
| | | separating the http server implementations into a directory and moved diagsvcs into zenserver since it's somewhat hard-coded for it
* zenserver project restructuring (#442)Stefan Boberg2023-10-062-3/+11
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* added --quiet option to suppress default logging to stdout (#446)Stefan Boberg2023-10-041-3/+11
| | | | added --quiet option for zenserver to suppress default logging to stdout
* handle errors in spdlog gracefully (#410)Dan Engelbrecht2023-09-191-0/+29
| | | | * handle errors in spdlog gracefully - try to report and avoid termination * changelog
* Moved EnableVTMode function into zencore (#311)Stefan Boberg2023-05-161-28/+1
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* implemented structured cache logging (#296)Stefan Boberg2023-05-121-7/+32
| | | | | | | | may be used as audit trail to help analyse potential cache pollution/corruption * also added common header with timestamp to all known log targets * made `Oid::operator bool` explicit to avoid logging/text format mishaps * made `HttpClient::operator bool` explicit
* move testing and observability code to zenhttp (#266)Stefan Boberg2023-05-023-309/+0
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* moved source directories into `/src` (#264)Stefan Boberg2023-05-025-0/+786
* moved source directories into `/src` * updated bundle.lua for new `src` path * moved some docs, icon * removed old test trees