379 Commits (d7f0276d880f0a94965aed76dadfa96227e08683)

Author	SHA1	Message	Date
Bjoern Rabenstein	8956faeccb	Migrate to new client_golang. ... This change will only be submitted when the new client_golang has been moved to the new version. Change-Id: Ifceb59333072a08286a8ac910709a8ba2e3a1581	10 years ago
Brian Brazil	1828b1f55c	Only log every query when debugging. ... Change-Id: I4f988d81cda6f6deb0ed7f497de4aa75409b158f	10 years ago
Julius Volz	01f652cb4c	Separate storage implementation from interfaces. ... This was initially motivated by wanting to distribute the rule checker tool under `tools/rule_checker`. However, this was not possible without also distributing the LevelDB dynamic libraries because the tool transitively depended on Levigo: rule checker -> query layer -> tiered storage layer -> leveldb This change separates external storage interfaces from the implementation (tiered storage, leveldb storage, memory storage) by putting them into separate packages: - storage/metric: public, implementation-agnostic interfaces - storage/metric/tiered: tiered storage implementation, including memory and LevelDB storage. I initially also considered splitting up the implementation into separate packages for tiered storage, memory storage, and LevelDB storage, but these are currently so intertwined that it would be another major project in itself. The query layers and most other parts of Prometheus now have notion of the storage implementation anymore and just use whatever implementation they get passed in via interfaces. The rule_checker is now a static binary :) Change-Id: I793bbf631a8648ca31790e7e772ecf9c2b92f7a0	11 years ago
Julius Volz	740d448983	Use custom timestamp type for sample timestamps and related code. ... So far we've been using Go's native time.Time for anything related to sample timestamps. Since the range of time.Time is much bigger than what we need, this has created two problems: - there could be time.Time values which were out of the range/precision of the time type that we persist to disk, therefore causing incorrectly ordered keys. One bug caused by this was: https://github.com/prometheus/prometheus/issues/367 It would be good to use a timestamp type that's more closely aligned with what the underlying storage supports. - sizeof(time.Time) is 192, while Prometheus should be ok with a single 64-bit Unix timestamp (possibly even a 32-bit one). Since we store samples in large numbers, this seriously affects memory usage. Furthermore, copying/working with the data will be faster if it's smaller. *MEMORY USAGE RESULTS* Initial memory usage comparisons for a running Prometheus with 1 timeseries and 100,000 samples show roughly a 13% decrease in total (VIRT) memory usage. In my tests, this advantage for some reason decreased a bit the more samples the timeseries had (to 5-7% for millions of samples). This I can't fully explain, but perhaps garbage collection issues were involved. *WHEN TO USE THE NEW TIMESTAMP TYPE* The new clientmodel.Timestamp type should be used whenever time calculations are either directly or indirectly related to sample timestamps. For example: - the timestamp of a sample itself - all kinds of watermarks - anything that may become or is compared to a sample timestamp (like the timestamp passed into Target.Scrape()). When to still use time.Time: - for measuring durations/times not related to sample timestamps, like duration telemetry exporting, timers that indicate how frequently to execute some action, etc. *NOTE ON OPERATOR OPTIMIZATION TESTS* We don't use operator optimization code anymore, but it still lives in the code as dead code. It still has tests, but I couldn't get all of them to pass with the new timestamp format. I commented out the failing cases for now, but we should probably remove the dead code soon. I just didn't want to do that in the same change as this. Change-Id: I821787414b0debe85c9fffaeb57abd453727af0f	11 years ago
Conor Hennessy	eba01d1119	Remove usage of gorest. ... Due to on going issues, we've decided to remove gorest. It started with gorest not being thread-safe (it does introspection to create a new handler which is an easy process to mess up with multiple threads of execution): https://code.google.com/p/gorest/issues/detail?id=15 While the issue has been marked fixed, it looks like the patch has introduced more problems than the original issue and simply doesn't work properly. I'm not sure the behaviour was thought through properly. If a new instance is needed every request then a handler-factory is needed or the library needs to set expectations about how the new objects should interact with their constructor state. While it was tempting to try out another routing library, I think for now it's better to use dumb vanilla Go routing. At least until we decide which URL format we intend to standardize on. Change-Id: Ica3da135d05f8ab8fc206f51eeca4f684f8efa0e	11 years ago
Julius Volz	a50ee8df30	Always set CORS headers at beginning of API handler. ... Change-Id: Icde9a74260c4bb919f09c3e10c6dd5f372ccdaec	11 years ago
Julius Volz	788587426b	Make scrape timeouts configurable per job. ... Change-Id: I77a7514ad9e7969771f873d63d6353ec50082a62	11 years ago
Julius Volz	0003027dce	Add needed trailing spaces in logs.	11 years ago
Julius Volz	aa5d251f8d	Use github.com/golang/glog for all logging.	11 years ago
Julius Volz	35ee2cd3cb	Add alertmanager notification support to Prometheus. ... Alert definitions now also have mandatory SUMMARY and DESCRIPTION fields that get sent along a firing alert to the alert manager.	11 years ago
Julius Volz	9f07f8677a	Generate tabular console view from JSON data.	12 years ago
Matt T. Proud	30b1cf80b5	WIP - Snapshot of Moving to Client Model.	12 years ago
Julius Volz	1fe3d3b06b	Remove obsolete argument from target handling code.	12 years ago
Julius Volz	51689d965d	Add debug timers to instant and range queries. ... This adds timers around several query-relevant code blocks. For now, the query timer stats are only logged for queries initiated through the UI. In other cases (rule evaluations), the stats are simply thrown away. My hope is that this helps us understand where queries spend time, especially in cases where they sometimes hang for unusual amounts of time.	12 years ago
Julius Volz	56324d8ce2	Make AST query storage non-global.	12 years ago
Matt T. Proud	3b9b1c6ab4	Define dependencies for web. stack concretely. ... This commit destroys the use of AppState, which makes passing concrete state along to various serving components onerous.	12 years ago
Julius Volz	9cea5d9df8	Convert the Prometheus configuration to protocol buffers.	12 years ago
Matt T. Proud	e86f4d9dfd	Convert time readers to represent time in UTC. ... Go's time.Time represents time as UTC in its fundamental data type. That said, when using ``time.Unix(...)``, it sets the zone for the time representation to the local. Unfortunately with diagnosis and our tests, it is a PITA to jump between various zones, even though the serialized version remains the same. To keep things easy, all places where times are generated or read are converted into UTC. These conversions are cheap, for ``Time.In`` merely changes a pointer reference in the struct, nothing more. This enables me to diagnose test failures with fixture data very easily.	12 years ago
Julius Volz	a0d311c9e6	Constantize job name label.	12 years ago
Bernerd Schaefer	8af0bbb3a0	Set job label for targets registered through the API ... This is set when jobs are statically registered (see retrieval/targetmanager.go#L92), and should be set here, too.	12 years ago
Bernerd Schaefer	5e9447996b	Set CORS Headers on API requests ... By setting Access-Control headers, the Prometheus metrics API can be accessed by cross-origin javascript applications (e.g., an external dashboard pulling Prometheus metrics).	12 years ago
Julius Volz	ec413459fa	Depointerize Matrix/Vector types as well as time.Time arguments.	12 years ago
Julius Volz	2b8f0b2cc7	Constantize metric name label name.	12 years ago
Julius Volz	dd67ab115b	Change GetAllMetricNames() to GetAllValuesForLabel().	12 years ago
Julius Volz	8e4c5b0cea	Use AST query analyzer and views with tiered storage.	12 years ago
Julius Volz	20c5ca1d72	Lower-case web API method arguments.	12 years ago
Julius Volz	f1fc7d717a	Allow replacing job targets via HTTP API. ... This roughly comprises the following changes: - index target pools by job instead of scrape interval - make targets within a pool exchangable while preserving existing health state for targets - allow exchanging targets via HTTP API (PUT) - show target lists in /status (experimental, for own debug use)	12 years ago
Julius Volz	23374788d3	Beginnings of a Prometheus status page.	12 years ago
Julius Volz	0cbd03ccf9	Move web-related code/resources to a subdirectory.	12 years ago