Henri DF
3195c8abea
formats.{cpp,h}: Get rid of global vars
2016-03-01 21:54:18 +00:00
Henri DF
0cdbdf9215
minor include cleanups
2016-03-01 10:49:19 -08:00
Henri DF
3feaa86db0
Merge pull request #10 from draios/support-function-outputs
...
Support function outputs
2016-02-29 20:38:45 -08:00
Henri DF
6a99c1a978
Basic support for function calls in outputs
2016-02-29 20:15:50 -08:00
Henri DF
1b7a5bd119
compiler: keep source in FunctionCall ASTs
2016-02-29 13:37:16 -08:00
Henri DF
55b2490314
coding convention
2016-02-28 21:14:46 -08:00
Henri DF
1c04ed7874
rework digwatch event output handling
...
the high-level change is that events matching a rule are now send into a
lua "on_event" function for handling, rather than doing the handling
down in c++.
more specifics:
before, the lua "load_rule" function registered formatters with
associated IDs with the c++ side, which later used this state to
reconcile events with formats and print output accordingly.
now, no such state is kept on the c++ side. the lua "load_rule" function
maintains the id->formatters map, and uses it to print outputs when it
receives events.
this change simplifies the existing flow and will also make the forthcoming
implementation of function outputs far simpler than it would have been
in the current setup.
2016-02-28 21:06:29 -08:00
Henri DF
f71de57a90
fix unused vars warning in digwatch.cpp
2016-02-28 20:28:47 -08:00
Henri DF
31a0065c3c
Example ruleset
2016-02-28 16:19:47 -08:00
Henri DF
c695051990
rule_loader.lua: comments cleanups
2016-02-28 23:50:10 +00:00
Henri DF
fe880c2c53
Merge pull request #9 from draios/grammar-output-functioncalls
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Function calls in outputs (grammar only)
2016-02-28 14:30:31 -08:00
Henri DF
6569f0372d
Grammar: support function-call syntax in outputs
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This change adds syntax support for function call outputs. For example:
... | syslog(evt, WARN)
Regular outputs are still allowed and parsed in the same way.
2016-02-28 14:28:00 -08:00
Henri DF
733548b80b
Grammar: fix commas in lists
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commas were (unintentionally) optional in lists. so a list like (a b c)
was a valid three-element list.
2016-02-28 14:24:54 -08:00
Henri DF
b46e996ea1
Merge pull request #8 from draios/array-accessor-grammar
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Grammar: parse array lookup in fields
2016-02-28 13:23:38 -08:00
Henri DF
96942f8034
Grammar: parse array lookup in fields
2016-02-28 13:20:35 -08:00
Henri DF
e75041c4b9
Update README.md
2016-02-26 09:56:52 -08:00
Henri DF
ae08d6ca8f
Merge pull request #7 from draios/compiler-fixes
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Compiler fixes
2016-02-25 10:55:18 -08:00
Henri DF
4053b7241e
Fix 'in' clause expansion
2016-02-25 10:54:42 -08:00
Henri DF
eaeb360b31
Fix macro expansion
2016-02-25 10:54:28 -08:00
Henri DF
d62ea1df24
Support for comments in rules files
2016-02-24 15:47:19 -08:00
Henri DF
ffac848c89
Merge pull request #6 from draios/cleanups
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Cleanups
2016-02-24 10:33:11 -08:00
Henri DF
2428231c7a
Remove unneeded code from digwatch main
2016-02-24 10:32:14 -08:00
Henri DF
1a70d12525
whitespace
2016-02-24 09:17:26 -08:00
Henri DF
5f43446bfa
compiler.lua: Move macro checking into own file
2016-02-24 09:03:55 -08:00
Henri DF
a2ec9870de
compiler.lua: consistently use 'ast' instead of 'node'
2016-02-24 08:46:33 -08:00
Henri DF
e725be968e
rule_loader.lua: add/improve comments
2016-02-24 08:46:12 -08:00
Henri DF
ef3b2728f5
Merge pull request #5 from draios/replumb-events
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Support output formats
2016-02-24 08:43:28 -08:00
Henri DF
a9d0268390
Move format handling into own class
2016-02-23 18:55:20 -08:00
Henri DF
636429c674
Move lua_State creation to digwatch main
2016-02-23 18:43:41 -08:00
Henri DF
3e73f01472
Always print events
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Before this change, events were only printed if they had all the
fields (same behavior as with sysdig when the output format doesn't have
a leading "*"). With this change, all events are printed; those that
don't have all fields are prefixed with a notification.
2016-02-23 18:15:43 -08:00
Henri DF
2f105932fa
parser-smoke.sh: add a test
2016-02-23 11:35:11 -08:00
Henri DF
87186df85a
digwatch: use appropriate formatter for each event
2016-02-23 10:21:25 -08:00
Henri DF
a3976281a8
Pass rule indices down into filters
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This allows to match events back up with the display output they are
associated with.
2016-02-23 18:09:52 +00:00
Henri DF
406f079621
Deep copy macro ASTs when expanding
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So that we can individually tag expressions that originate from the same macro (see next commit).
2016-02-23 18:09:52 +00:00
Henri DF
3a56c1a0e4
AST: Rule node always has an Output child node
2016-02-23 18:09:52 +00:00
Henri DF
a7d0132154
Add 'sysdig.set_formatter' and use it in compiler
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This allows the compiler to define per-rule formats. They are currently
instantiated and stored on the c++ side, but not being made use of yet.
2016-02-23 18:09:51 +00:00
Henri DF
426097241d
Move compiler state and AST grafting to rule_loader.lua
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This is needed so that rule_loader (which should be renamed in a later pass..) can tag
filters with their index.
2016-02-22 18:07:54 -08:00
Henri DF
5ba821aaef
Fix handling of nested ASTs
2016-02-22 16:26:15 -08:00
Henri DF
d759e3b942
Fix macro expansion bug introduced with Rules
2016-02-22 16:01:40 -08:00
Henri DF
c31411b4cc
Merge pull request #4 from draios/parser-work
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Parser work
2016-02-22 13:32:12 -08:00
Henri DF
bba5aa6974
Add support for output formats
2016-02-22 21:31:21 +00:00
Henri DF
05362e2c68
compiler: don't fail on empty lines
2016-02-22 21:31:21 +00:00
Henri DF
7853260f38
fix test script
2016-02-22 21:31:21 +00:00
Henri DF
e5637d0cee
specify lua5.1 in test.lua
2016-02-22 21:31:21 +00:00
Henri DF
b41794f6a9
Update README.md
2016-02-21 20:31:33 -08:00
Henri DF
5a3c191c97
Update README.md
2016-02-21 20:29:47 -08:00
Henri DF
37da302b39
Update README.md
2016-02-21 15:11:13 -08:00
Henri DF
8d7efbfc6b
Merge pull request #3 from draios/lua-move
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Lua move
2016-02-21 13:44:01 -08:00
Henri DF
c7bafc9a49
Move lua/ to userspace/digwatch
2016-02-21 13:43:08 -08:00
Henri DF
e50dd885c2
Remove cruft from lua/rule_loader.lua
2016-02-21 13:40:34 -08:00
