Commit Graph

28 Commits

Author SHA1 Message Date
Francis Lavoie
d4d8bbcfc6
events: Implement event system (#4912)
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2022-08-31 15:01:30 -06:00
Francis Lavoie
141872ed80
chore: Bump up to Go 1.19, minimum 1.18 (#4925) 2022-08-02 16:39:09 -04:00
Matt Holt
ab0455922a
reverseproxy: Dynamic upstreams (with SRV and A/AAAA support) (#4470)
* reverseproxy: Begin refactor to enable dynamic upstreams

Streamed here: https://www.youtube.com/watch?v=hj7yzXb11jU

* Implement SRV and A/AAA upstream sources

Also get upstreams at every retry loop iteration instead of just once
before the loop. See #4442.

* Minor tweaks from review

* Limit size of upstreams caches

* Add doc notes deprecating LookupSRV

* Provision dynamic upstreams

Still WIP, preparing to preserve health checker functionality

* Rejigger health checks

Move active health check results into handler-specific Upstreams.

Improve documentation regarding health checks and upstreams.

* Deprecation notice

* Add Caddyfile support, use `caddy.Duration`

* Interface guards

* Implement custom resolvers, add resolvers to http transport Caddyfile

* SRV: fix Caddyfile `name` inline arg, remove proto condition

* Use pointer receiver

* Add debug logs

Co-authored-by: Francis Lavoie <lavofr@gmail.com>
2022-03-06 17:43:39 -07:00
KallyDev
c48fadc4a7
Move from deprecated ioutil to os and io packages (#4364) 2021-09-29 11:17:48 -06:00
elnoro
d882211080
reverseproxy: Keep path to unix socket as dial address (#4232) 2021-07-06 23:43:45 -04:00
Francis Lavoie
75f797debd
reverseproxy: Implement health_uri, deprecate health_path, supports query (#4050)
* reverseproxy: Implement health_uri, replaces health_path, supports query

Also fixes a bug with `health_status` Caddyfile parsing , it would always only take the first character of the status code even if it didn't end with "xx".

* reverseproxy: Rename to URI, named logger, warn in Provision (for JSON)
2021-03-29 18:36:40 -06:00
yaxin
3c9256a1be
reverseproxy: Caddyfile health check headers, host header support (#3948)
* reverse_proxy: 1.health check headers can be set through Caddyfile using health_headers directive; 2.health check header host can be set properly

* reverse_proxy:
replace example with syntax definition
inline health_headers directive parse function

* bugfix: change caddyfile_adapt testcase file from space to tab

* reverseproxy: modify health_header value document as optional and add more test cases
2021-01-04 11:26:18 -07:00
Dave Henderson
bd17eb205d
ci: Use golangci's github action for linting (#3794)
* ci: Use golangci's github action for linting

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix most of the staticcheck lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix the prealloc lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix the misspell lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix the varcheck lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix the errcheck lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix the bodyclose lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix the deadcode lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix the unused lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix the gosec lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix the gosimple lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix the ineffassign lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Fix the staticcheck lint errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Revert the misspell change, use a neutral English

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Remove broken golangci-lint CI job

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Re-add errantly-removed weakrand initialization

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* don't break the loop and return

* Removing extra handling for null rootKey

* unignore RegisterModule/RegisterAdapter

Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com>

* single-line log message

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>

* Fix lint after a1808b0dbf209c615e438a496d257ce5e3acdce2 was merged

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Revert ticker change, ignore it instead

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Ignore some of the write errors

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Remove blank line

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Use lifetime

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* close immediately

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>

* Preallocate configVals

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

* Update modules/caddytls/distributedstek/distributedstek.go

Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com>
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2020-11-22 14:50:29 -07:00
Matt Holt
c7efb0307d
reverseproxy: Fix dial placeholders, SRV, active health checks (#3780)
* reverseproxy: Fix dial placeholders, SRV, active health checks

Supercedes #3776
Partially reverts or updates #3756, #3693, and #3695

* reverseproxy: add integration tests

Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com>
2020-10-13 10:35:20 -06:00
Mohammed Al Sahaf
bc453fa6ae
reverseproxy: Correct alternate port for active health checks (#3693)
* reverseproxy: construct active health-check transport from scratch (Fixes #3691)

* reverseproxy: do upstream health-check on the correct alternative port

* reverseproxy: add integration test for health-check on alternative port

* reverseproxy: put back the custom transport for health-check http client

* reverseproxy: cleanup health-check integration test

* reverseproxy: fix health-check of unix socket upstreams

* reverseproxy: skip unix socket tests on Windows

* tabs > spaces

Co-authored-by: Francis Lavoie <lavofr@gmail.com>

* make the linter (and @francislavoie) happy

Co-authored-by: Francis Lavoie <lavofr@gmail.com>

* One more lint fix

Co-authored-by: Francis Lavoie <lavofr@gmail.com>

Co-authored-by: Francis Lavoie <lavofr@gmail.com>
2020-09-17 10:25:34 -06:00
Matthew Holt
724b74d981
reverseproxy: Abort active health checks on context cancellation 2020-08-31 13:22:34 -06:00
Matthew Holt
e2f913bb7f
reverseproxy: Minor fixes and cleanup
Now use context cancellation to stop active health checker, which is
simpler than and just as effective as using a separate stop channel.
2020-08-07 18:02:24 -06:00
AndyBan
22055c5e0f
reverseproxy: Fix https active health checks #3450 (#3451) 2020-05-26 12:40:57 -06:00
Matthew Holt
aef560c7fc
all: Recover from panics in goroutines 2020-05-12 11:36:20 -06:00
Matthew Holt
a507a5bbc7 reverseproxy: Remove circuitbreaker module (see #3331)
Moving to https://github.com/caddyserver/circuitbreaker

Nobody was using it anyway -- it works well, but something got fumbled
in a refactoring *months* ago. Turns out that we forgot the interface
guards AND botched a method name (my bad) - Ok() should have been OK().
So it would always have thrown a runtime panic if it tried to be loaded.
The module itself works well, but obviously nobody used it because
nobody reported the error. Fixing this while we move it to the new repo.

Removing this removes the last Bazaar/Launchpad dependency (I think).
2020-05-01 19:47:46 -06:00
Matthew Holt
7cca291d62 reverse_proxy: Health checks: Don't cross the streams
Fixes https://caddy.community/t/v2-health-checks-are-going-to-the-wrong-upstream/7084?u=matt

... I think
2020-02-23 14:31:05 -07:00
Matt Holt
a5ebec0041
http: Change routes to sequential matcher evaluation (#2967)
Previously, all matchers in a route would be evaluated before any
handlers were executed, and a composite route of the matching routes
would be created. This made rewrites especially tricky, since the only
way to defer later matchers' evaluation was to wrap them in a subroute,
or to invoke a "rehandle" which often caused bugs.

Instead, this new sequential design evaluates each route's matchers then
its handlers in lock-step; matcher-handlers-matcher-handlers...

If the first matching route consists of a rewrite, then the second route
will be evaluated against the rewritten request, rather than the original
one, and so on.

This should do away with any need for rehandling.

I've also taken this opportunity to avoid adding new values to the
request context in the handler chain, as this creates a copy of the
Request struct, which may possibly lead to bugs like it has in the past
(see PR #1542, PR #1481, and maybe issue #2463). We now add all the
expected context values in the top-level handler at the server, then
any new values can be added to the variable table via the VarsCtxKey
context key, or just the GetVar/SetVar functions. In particular, we are
using this facility to convey dial information in the reverse proxy.

Had to be careful in one place as the middleware compilation logic has
changed, and moved a bit. We no longer compile a middleware chain per-
request; instead, we can compile it at provision-time, and defer only the
evaluation of matchers to request-time, which should slightly improve
performance. Doing this, however, we take advantage of multiple function
closures, and we also changed the use of HandlerFunc (function pointer)
to Handler (interface)... this led to a situation where, if we aren't
careful, allows one request routed a certain way to permanently change
the "next" handler for all/most other requests! We avoid this by making
a copy of the interface value (which is a lightweight pointer copy) and
using exclusively that within our wrapped handlers. This way, the
original stack frame is preserved in a "read-only" fashion. The comments
in the code describe this phenomenon.

This may very well be a breaking change for some configurations, however
I do not expect it to impact many people. I will make it clear in the
release notes that this change has occurred.
2020-01-09 10:00:13 -07:00
Matthew Holt
95ed603de7
Improve godocs all around
These will be used in the new automated documentation system
2019-12-23 12:45:35 -07:00
Matthew Holt
b07f6958ac
Use "IsUnixNetwork" function instead of repeating the logic 2019-12-06 12:00:04 -07:00
Mohammed Al Sahaf
93bc1b72e3 core: Use port ranges to avoid OOM with bad inputs (#2859)
* fix OOM issue caught by fuzzing

* use ParsedAddress as the struct name for the result of ParseNetworkAddress

* simplify code using the ParsedAddress type

* minor cleanups
2019-11-11 15:33:38 -07:00
Matthew Holt
dccba71276 reverse_proxy: Structured logs 2019-10-29 16:02:58 -06:00
Matthew Holt
1e31be8de0
reverse_proxy: Allow dynamic backends (closes #990 and #1539)
This PR enables the use of placeholders in an upstream's Dial address.

A Dial address must represent precisely one socket after replacements.

See also #998 and #1639.
2019-10-11 14:25:39 -06:00
Matthew Holt
44cb804b9e
reverse_proxy: Configurable request headers on active health checks
See https://caddy.community/t/health-check-user-agent/6309
2019-10-04 17:21:38 -06:00
Matthew Holt
e73b117332
reverse_proxy: Ability to mutate headers; set upstream placeholders 2019-09-14 13:25:26 -06:00
Matthew Holt
0830fbad03
Reconcile upstream dial addresses and request host/URL information
My goodness that was complicated

Blessed be request.Context

Sort of
2019-09-05 13:14:39 -06:00
Matthew Holt
acb8f0e0c2
Integrate circuit breaker modules with reverse proxy 2019-09-03 19:06:54 -06:00
Matthew Holt
652460e03e
Some cleanup and godoc 2019-09-03 16:56:09 -06:00
Matthew Holt
ccfb12347b
reverse_proxy: Implement active health checks 2019-09-03 12:10:11 -06:00