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View Code? Open in Web Editor NEWHAProxy Protocols in Go
License: Apache License 2.0
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haproxy-go's Issues
testutil: NoAllocs tests is flaky
Regenerate generated code on CI and assert no changes
This allows deterministic outputs and avoids manual changes to generated files.
Add e2e test
When writing a connector to a service, it is usually a good practice to provide a e2e test that verify the integration works as expected and avoid regressions (better to run a check on CI). This is haproxy instance running and a sample component running and returning an expected output. This also helps to triage issues
peers: timeouts and misreads with many messages
When many stick-table entries get propagated for example during initial startup there is a problem with the message reader.
2024/08/13 04:18:49 reading message: invalid amount read: 30 != 22
2024/08/13 04:18:49 last message timer expired: closing connection
config: add a config-file parser
There is an official one, but having one that can be used with CUE would be nice.
evaluate using a goroutine per handler execution
The stdlib http handler interface does this and it would allow to properly recover from panics inside the handler. It would also prevent timeouts for newer messages when the current one is taking too long
logs: Implement a parser for haproxy log formats
A fast reader implementation without regex would be cool.
// none
// Connect from 127.0.0.1:57765 to 127.0.0.1:8080 (test/HTTP)
// tcplog
// "%ci:%cp [%t] %ft %b/%s %Tw/%Tc/%Tt %B %ts %ac/%fc/%bc/%sc/%rc %sq/%bq"
// 127.0.0.1:57843 [16/Oct/2023:02:58:03.240] test app_backend/<NOSRV> -1/-1/0 84 LR 1/1/0/0/0 0/0
// httplog
// "%ci:%cp [%tr] %ft %b/%s %TR/%Tw/%Tc/%Tr/%Ta %ST %B %CC %CS %tsc %ac/%fc/%bc/%sc/%rc %sq/%bq %hr %hs %{+Q}r"
// 127.0.0.1:54848 [16/Oct/2023:02:29:52.943] test app_backend/<NOSRV> 0/-1/-1/-1/0 200 84 - - LR-- 1/1/0/0/0 0/0 "GET / HTTP/1.1"
// httplog clf
// "%{+Q}o %{-Q}ci - - [%trg] %r %ST %B \"\" \"\" %cp %ms %ft %b %s %TR %Tw %Tc %Tr %Ta %tsc %ac %fc %bc %sc %rc %sq %bq %CC %CS %hrl %hsl
// 127.0.0.1 - - [16/Oct/2023:01:05:56 +0000] "GET / HTTP/1.1" 200 84 "" "" 58628 319 "test" "app_backend" "<NOSRV>" 0 -1 -1 -1 0 LR-- 1 1 0 0 0 0 0 "" ""
// httpslog
// "%ci:%cp [%tr] %ft %b/%s %TR/%Tw/%Tc/%Tr/%Ta %ST %B %CC %CS %tsc %ac/%fc/%bc/%sc/%rc %sq/%bq %hr %hs %{+Q}r %[fc_err]/%[ssl_fc_err,hex]/%[ssl_c_err]/%[ssl_c_ca_err]/%[ssl_fc_is_resumed] %[ssl_fc_sni]/%sslv/%sslc"
// 127.0.0.1:57881 [16/Oct/2023:02:58:32.647] test app_backend/<NOSRV> 0/-1/-1/-1/0 200 84 - - LR-- 1/1/0/0/0 0/0 "GET / HTTP/1.1" 0/-/-/-/0 -/-/-
// Flags are :
// * Q: quote a string
// * X: hexadecimal representation (IPs, Ports, %Ts, %rt, %pid)
// * E: escape characters '"', '\' and ']' in a string with '\' as prefix
// (intended purpose is for the RFC5424 structured-data log formats)
//Example:
//log-format %T\ %t\ Some\ Text
//log-format %{+Q}o\ %t\ %s\ %{-Q}r
//
//log-format-sd %{+Q,+E}o\ [exampleSDID@1234\ header=%[capture.req.hdr(0)]]
//Please refer to the table below for currently defined variables :
//
// +---+------+------------------------------------------------------+---------+
// | R | var | field name (8.2.2 and 8.2.3 for description) | type |
// | | | sample fetch alternative | |
// +===+======+======================================================+=========+
// | | %o | special variable, apply flags on all next var | |
// +---+------+------------------------------------------------------+---------+
// | date formats |
// +---+------+------------------------------------------------------+---------+
// | | %T | Accept date UTC + timezone | |
// | | | %[accept_date,utime("%d/%b/%Y:%H:%M:%S %z")] | date |
// +---+------+------------------------------------------------------+---------+
// | | %Tl | Accept date local + timezone | |
// | | | %[accept_date,ltime("%d/%b/%Y:%H:%M:%S %z")] | date |
// +---+------+------------------------------------------------------+---------+
// | | %Ts | Accept date as a UNIX timestamp | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %t | Accept date local (with millisecond resolution) | |
// | | | %[accept_date(ms),ms_ltime("%d/%b/%Y:%H:%M:%S.%3N")] | date |
// +---+------+------------------------------------------------------+---------+
// | | %ms | Accept date milliseconds | |
// | | | %[accept_date(ms),ms_utime("%3N") | numeric |
// +---+------+------------------------------------------------------+---------+
// | H | %tr | Request date local (with millisecond resolution) | |
// | | | %[request_date(ms),ms_ltime("%d/%b/%Y:%H:%M:%S.%3N")]| date |
// +---+------+------------------------------------------------------+---------+
// | H | %trg | Request date UTC + timezone | |
// | | | %[request_date,utime("%d/%b/%Y:%H:%M:%S %z")] | date |
// +---+------+------------------------------------------------------+---------+
// | H | %trl | Request date local + timezone | |
// | | | %[request_date,ltime("%d/%b/%Y:%H:%M:%S %z")] | date |
// +---+------+------------------------------------------------------+---------+
// | Timing events |
// +---+------+------------------------------------------------------+---------+
// | H | %Ta | Active time of the request (from TR to end) | |
// | | | %[txn.timer.total] | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %Tc | Tc | |
// | | | %[bc.timer.connect] | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %Td | Td = Tt - (Tq + Tw + Tc + Tr) | |
// | | | %[res.timer.data] | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %Th | connection handshake time (SSL, PROXY proto) | |
// | | | %[fc.timer.handshake] | numeric |
// +---+------+------------------------------------------------------+---------+
// | H | %Ti | idle time before the HTTP request | |
// | | | %[req.timer.idle] | numeric |
// +---+------+------------------------------------------------------+---------+
// | H | %Tq | Th + Ti + TR | |
// | | | %[req.timer.tq] | numeric |
// +---+------+------------------------------------------------------+---------+
// | H | %TR | time to receive the full request from 1st byte | |
// | | | %[req.timer.hdr] | numeric |
// +---+------+------------------------------------------------------+---------+
// | H | %Tr | Tr (response time) | |
// | | | %[res.timer.hdr] | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %Tt | Tt | |
// | | | %[fc.timer.total] | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %Tu | Tu | |
// | | | %[txn.timer.user] | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %Tw | Tw | |
// | | | %[req.timer.queue] | numeric |
// +---+------+------------------------------------------------------+---------+
// | Others |
// +---+------+------------------------------------------------------+---------+
// | | %B | bytes_read (from server to client) | numeric |
// | | | %[bytes_out] | |
// +---+------+------------------------------------------------------+---------+
// | H | %CC | captured_request_cookie | string |
// +---+------+------------------------------------------------------+---------+
// | H | %CS | captured_response_cookie | string |
// +---+------+------------------------------------------------------+---------+
// | | %H | hostname | string |
// +---+------+------------------------------------------------------+---------+
// | H | %HM | HTTP method (ex: POST) | string |
// +---+------+------------------------------------------------------+---------+
// | H | %HP | HTTP request URI without query string | string |
// +---+------+------------------------------------------------------+---------+
// | H | %HPO | HTTP path only (without host nor query string) | string |
// +---+------+------------------------------------------------------+---------+
// | H | %HQ | HTTP request URI query string (ex: ?bar=baz) | string |
// | | | ?%[query] | |
// +---+------+------------------------------------------------------+---------+
// | H | %HU | HTTP request URI (ex: /foo?bar=baz) | string |
// +---+------+------------------------------------------------------+---------+
// | H | %HV | HTTP version (ex: HTTP/1.0) | string |
// | | | HTTP/%[req.ver] | |
// +---+------+------------------------------------------------------+---------+
// | | %ID | unique-id | string |
// +---+------+------------------------------------------------------+---------+
// | | %ST | status_code | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %U | bytes_uploaded (from client to server) | numeric |
// | | | %[bytese] | |
// +---+------+------------------------------------------------------+---------+
// | | %ac | actconn | |
// | | | %[act_conn] | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %b | backend_name | |
// | | | %[be_name] | string |
// +---+------+------------------------------------------------------+---------+
// | | %bc | beconn (backend concurrent connections) | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %bi | backend_source_ip (connecting address) | |
// | | | %[bc_src] | IP |
// +---+------+------------------------------------------------------+---------+
// | | %bp | backend_source_port (connecting address) | |
// | | | %[bc_src_port] | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %bq | backend_queue | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %ci | client_ip (accepted address) | |
// | | | %[src] | IP |
// +---+------+------------------------------------------------------+---------+
// | | %cp | client_port (accepted address) | |
// | | | %[src_port] | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %f | frontend_name | string |
// +---+------+------------------------------------------------------+---------+
// | | %fc | feconn (frontend concurrent connections) | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %fi | frontend_ip (accepting address) | |
// | | | %[dst] | IP |
// +---+------+------------------------------------------------------+---------+
// | | %fp | frontend_port (accepting address) | |
// | | | %[dst_port] | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %ft | frontend_name_transport ('~' suffix for SSL) | string |
// +---+------+------------------------------------------------------+---------+
// | | %lc | frontend_log_counter | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %hr | captured_request_headers default style | string |
// +---+------+------------------------------------------------------+---------+
// | | %hrl | captured_request_headers CLF style | string |
// | | | | list |
// +---+------+------------------------------------------------------+---------+
// | | %hs | captured_response_headers default style | string |
// +---+------+------------------------------------------------------+---------+
// | | %hsl | captured_response_headers CLF style | string |
// | | | | list |
// +---+------+------------------------------------------------------+---------+
// | | %pid | PID | |
// | | | %[pid] | numeric |
// +---+------+------------------------------------------------------+---------+
// | H | %r | http_request | string |
// +---+------+------------------------------------------------------+---------+
// | | %rc | retries | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %rt | request_counter (HTTP req or TCP session) | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %s | server_name | string |
// +---+------+------------------------------------------------------+---------+
// | | %sc | srv_conn (server concurrent connections) | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %si | server_IP (target address) | |
// | | | %[bc_dst] | IP |
// +---+------+------------------------------------------------------+---------+
// | | %sp | server_port (target address) | |
// | | | %[bc_dst_port] | numeric |
// +---+------+------------------------------------------------------+---------+
// | | %sq | srv_queue | numeric |
// +---+------+------------------------------------------------------+---------+
// | S | %sslc| ssl_ciphers (ex: AES-SHA) | |
// | | | %[ssl_fc_cipher] | string |
// +---+------+------------------------------------------------------+---------+
// | S | %sslv| ssl_version (ex: TLSv1) | |
// | | | %[ssl_fc_protocol] | string |
// +---+------+------------------------------------------------------+---------+
// | | %ts | termination_state | string |
// +---+------+------------------------------------------------------+---------+
// | H | %tsc | termination_state with cookie status | string |
// +---+------+------------------------------------------------------+---------+
//
// R = Restrictions : H = mode http only ; S = SSL only
peers: refactor for master compliance
The peers protocol is currently just a POC and needs some love. Bonuspoints for zero alloc hotpath compliance.
peers: Add potentially missing datatypes
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