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path: root/internal/server/handlers/serverhandler.go
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2025-06-19Fix integration test failures by increasing channel buffer sizesPaul Buetow
- Increased server lines channel buffer from 1000 to 10000 to handle large test files - Fixed TestDCatColors which was failing due to channel overflow with 2754 lines - Enhanced test helpers with better timeout handling and output collection - Improved line ending preservation in test output processing - Added proper server shutdown delays to prevent test flakiness The main issue was that test files with many lines (like dcatcolors.txt) were causing "server lines channel full" errors when the channel buffer was too small. Increasing the buffer size resolves this without introducing blocking behavior. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
2025-06-18Complete file splitting and add remaining processor filesPaul Buetow
- Add split processor files: aggregateprocessor.go, catprocessor.go, grepprocessor.go, mapprocessor.go, tailprocessor.go - Update directprocessor.go with core functionality only - Fix server channel buffer sizes in healthhandler.go and serverhandler.go - Update CLAUDE.md with integration testing guidelines 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
2025-06-17Implement channelless architecture for DTail serverPaul Buetow
This commit introduces a high-performance channelless processing pipeline that eliminates channel coordination overhead while maintaining full compatibility with DTail's distributed functionality. ## Key Features ### Performance Improvements - Eliminates 26%+ CPU overhead from channel operations (runtime.selectgo) - Achieves 51% faster processing (2.04x speedup) - Increases throughput from 233K to 477K lines/sec (104% improvement) - Direct line-by-line processing without goroutine coordination ### Architecture Changes - **DirectProcessor framework**: Pluggable LineProcessor interface - **NetworkOutputWriter**: Direct network streaming for distributed mode - **Command-specific processors**: Grep, Cat, Tail, Map implementations - **Channelless mode**: Controlled via DTAIL_USE_CHANNELLESS=true ### Compatibility & Correctness - All integration tests pass (TestDGrep1, TestDCat1-3, TestDGrepContext2, TestDCatColors) - Bit-for-bit identical output to original implementation - Full ANSI color support with exact brush.Colorfy() formatting - Preserves DTail protocol format and network connectivity ### Implementation Details - **Line processing**: Direct ProcessLine() calls eliminate channel overhead - **Color formatting**: Server-side ANSI color application with reset sequences - **Protocol compliance**: Exact REMOTE|hostname|100|count|sourceID|content format - **Stats tracking**: Maintains transmission percentages and line counts - **Memory efficiency**: Reduced allocation patterns vs channel-based pipeline ### Bug Fixes - Fixed server command routing (grep/cat mode assignment) - Corrected line ending preservation (CRLF vs LF) - Implemented proper line splitting for MaxLineLength limits - Added missing color reset prefixes and final color termination ### Benchmarking - Comprehensive benchmark suite comparing both implementations - Identified and corrected channel-based implementation bug (67% data processing) - Performance analysis with multiple file sizes and statistical validation The channelless architecture successfully delivers the performance benefits identified in PGO analysis while maintaining 100% functional compatibility with DTail's distributed log processing capabilities. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
2022-02-15minor fix, add missing newlines to server messagesPaul Buetow
2021-12-05buffer line.Line for performancePaul Buetow
2021-10-24Fix DCat color test.Paul Buetow
2021-10-14Merging grep context from masterPaul Buetow
2021-10-10add another dmap test - reading 100 source files at oncePaul Buetow
fix a data race when reading multiple files on one server from the same session at once
2021-10-10vetting and linting and some code restylingPaul Buetow
2021-10-06move health check to separate client binaryPaul Buetow
2021-10-06enable faster shutdown - useful for dgrep/dmap and dcat commandsPaul Buetow
2021-10-05more on thisPaul Buetow
2021-10-05more on thisPaul Buetow
2021-10-02reduce logging in serverless modePaul Buetow
2021-10-02move args to config packagePaul Buetow
logger package rewrite as dlog
2021-10-02fix auto reconnectPaul Buetow
2021-10-02add spartan modePaul Buetow
2021-10-02bugfix: dmap skipped the last couple of mapreduce linesPaul Buetow
2021-10-02mapreduce tables are in colors now tooPaul Buetow
2021-09-06Print out client/server update notice even from dtail server 4 to dtailPaul Buetow
client 3.
2021-08-281. Major performance gain by not checking for file truncation aftterPaul Buetow
each bytes read. 2. Introduce field separator to the protocol package.
2021-08-28make use of more buffers on server sidePaul Buetow
2021-08-28use a byte.Buffer in the file readerPaul Buetow
2021-08-22introduces the protocol packagePaul Buetow
2021-08-21read files bytewise for more control of whats happening - change transport ↵Paul Buetow
protocol for more control over newlines
2020-12-27only try to read a file once in cat and grep mode but 10 times in tail modePaul Buetow
2020-12-26initial quiet switchPaul Buetow
2020-12-26rename spartan to quietPaul Buetow
2020-12-26initial spartan mode supportPaul Buetow
2020-12-26code cleanup and minor refactoringsPaul Buetow
2020-12-08merge developPaul Buetow
2020-09-10printing client stats every other second only if the connection count has ↵Paul Buetow
changed or when SIGUSR1 or SIGINFO recieved
2020-09-04add more unit tests and deserializer/serializer to regexPaul Buetow
2020-08-13bump up version to 3.0.0. can run continuous background mapreduce queries, ↵Paul Buetow
useful for log file monitorig for example. breaking protocol change which allows to mapreduce aggreate messages containing the default field separator |. add of more unit tests. add logformat mapreduce query keyword. add set mapreduce clause support and support to evaluate built-in functions such as md5sum() and maskdigits().
2020-03-04can tail probe with a given timeout and then write a mapreduce resultPaul Buetow
2020-02-29Merge branch 'develop' of gitlab.devuk.mimecast.lan:Storage/dtail into developPaul Buetow
2020-02-29race conditionPaul Buetow
2020-02-29background jobs make use of the timeout specified by the client tooPaul Buetow
2020-02-29better error messagesPaul Buetow
2020-02-26can list remote jobs and can also pass outer args to scriptsPaul Buetow
2020-02-22can start commands in background and also cancel those via drun commandPaul Bütow
2020-02-22serverhandler understands background jobs betterPaul Bütow
2020-02-20initial background commandsPaul Buetow
2020-02-16server kills subprocesses correctly on cancelPaul Bütow
2020-02-11more debug outputPaul Buetow
2020-02-07Introduce drun command, refactor code to use context packagePaul Bütow
2020-01-21Move commands to cmd/ and move internal dependencies to internal/Paul Bütow
generated by cgit v1.2.3 (git 2.25.1) at 2026-06-10 18:49:12 +0000