Commit Graph

11 Commits

Author SHA1 Message Date
Jakob Borg
a551686d37 lib/discovery: Receiving a new announcement should be non-blocking
Pretty sure the intention of the select was for it to be non-blocking.
Not that it will matter almost ever.
2016-04-01 07:24:04 +00:00
Jakob Borg
f5f0e46016 lib: Use bytes.Equal instead of bytes.Compare where possible 2016-03-31 15:12:46 +00:00
Jakob Borg
d01ea9d6fb lib/discovery: Handle nil relayService (fixes #2890) 2016-03-27 11:37:43 +00:00
Jakob Borg
ef0a0db07e More local discovery URL debugging (ref #2444) 2015-11-10 10:16:55 +01:00
Jakob Borg
e3c55ef307 Fix address list in DeviceDiscovered, add debug prints (ref #2444) 2015-11-09 21:36:17 +01:00
Audrius Butkevicius
5b03c2d949 Remove dead code 2015-10-25 20:46:09 +00:00
Jakob Borg
76af9ba53d Implement facility based logger, debugging via REST API
This implements a new debug/trace infrastructure based on a slightly
hacked up logger. Instead of the traditional "if debug { ... }" I've
rewritten the logger to have no-op Debugln and Debugf, unless debugging
has been enabled for a given "facility". The "facility" is just a
string, typically a package name.

This will be slightly slower than before; but not that much as it's
mostly a function call that returns immediately. For the cases where it
matters (the Debugln takes a hex.Dump() of something for example, and
it's not in a very occasional "if err != nil" branch) there is an
l.ShouldDebug(facility) that is fast enough to be used like the old "if
debug".

The point of all this is that we can now toggle debugging for the
various packages on and off at runtime. There's a new method
/rest/system/debug that can be POSTed a set of facilities to enable and
disable debug for, or GET from to get a list of facilities with
descriptions and their current debug status.

Similarly a /rest/system/log?since=... can grab the latest log entries,
up to 250 of them (hardcoded constant in main.go) plus the initial few.

Not implemented in this commit (but planned) is a simple debug GUI
available on /debug that shows the current log in an easily pasteable
format and has checkboxes to enable the various debug facilities.

The debug instructions to a user then becomes "visit this URL, check
these boxes, reproduce your problem, copy and paste the log". The actual
log viewer on the hypothetical /debug URL can poll regularly for new log
entries and this bypass the 250 line limit.

The existing STTRACE=foo variable is still obeyed and just sets the
start state of the system.
2015-10-03 18:09:53 +02:00
Jakob Borg
fa75f54a05 Don't naively join host and port using colon (fixes #2316) 2015-09-27 21:44:08 +02:00
Jakob Borg
e522811a52 Encapsulate local discovery address in struct
The XDR encoder doesn't understart slices of strings very well. It can
encode and decode them, but there's no way to set limits on the length
of the strings themselves (only on the length of the slice), and the
generated diagrams are incorrect. This trivially works around this,
while also documenting what the string actually is (a URL).
2015-09-22 23:28:00 +02:00
Jakob Borg
4581c57478 Fix import paths 2015-09-22 19:38:46 +02:00
Jakob Borg
b0cd7be39b New global discovery protocol over HTTPS (fixes #628, fixes #1907) 2015-09-20 21:10:53 +02:00