Commit Graph

18 Commits (9d22f030cff641d4c2fe8bce330b9eaf4b5ba119)

Author SHA1 Message Date
Julius Volz c187308366 storage: Contextify storage interfaces.
This is based on https://github.com/prometheus/prometheus/pull/1997.

This adds contexts to the relevant Storage methods and already passes
PromQL's new per-query context into the storage's query methods.
The immediate motivation supporting multi-tenancy in Frankenstein, but
this could also be used by Prometheus's normal local storage to support
cancellations and timeouts at some point.
2016-09-19 16:29:07 +02:00
Julius Volz ed5a0f0abe promql: Allow per-query contexts.
For Weaveworks' Frankenstein, we need to support multitenancy. In
Frankenstein, we initially solved this without modifying the promql
package at all: we constructed a new promql.Engine for every
query and injected a storage implementation into that engine which would
be primed to only collect data for a given user.

This is problematic to upstream, however. Prometheus assumes that there
is only one engine: the query concurrency gate is part of the engine,
and the engine contains one central cancellable context to shut down all
queries. Also, creating a new engine for every query seems like overkill.

Thus, we want to be able to pass per-query contexts into a single engine.

This change gets rid of the promql.Engine's built-in base context and
allows passing in a per-query context instead. Central cancellation of
all queries is still possible by deriving all passed-in contexts from
one central one, but this is now the responsibility of the caller. The
central query context is now created in main() and passed into the
relevant components (web handler / API, rule manager).

In a next step, the per-query context would have to be passed to the
storage implementation, so that the storage can implement multi-tenancy
or other features based on the contextual information.
2016-09-19 15:38:17 +02:00
beorn7 094a098ce6 Revert "Revert the /graph changes."
This reverts commit aa43d34a86.

This brings back the /graph changes so that @grandbora can continue to
work on the redirect for backwards compatibility. And other changes
can already take the new /graph parameters into account.
2016-09-03 21:05:23 +02:00
beorn7 aa43d34a86 Revert the /graph changes.
This revert will be reverted once v1.1 is released and has its own
release branch. Since we had already change on top of this, there was
no cleaner way of cutting those changes out.

This commit reverts the following commits:

Revert "Update backend helpers and templates to new url schema"
This reverts commit fc6cdd0611.

Revert "Refactor graph.js"
This reverts commit 445fac56e0.

Revert "Use query parameters in the url"
This reverts commit 3e18d86d8a.

Revert "Point to correct place for GraphLinkForExpression"
This reverts commit 3da825fc76.

Assets are also updated.
2016-09-02 13:59:09 +02:00
Dmitry Ulianov a8619111f3 Added toUpper and toLower formatting to templates 2016-08-15 14:00:22 +03:00
Bora Tunca fc6cdd0611 Update backend helpers and templates to new url schema 2016-08-08 09:52:14 +02:00
beorn7 4b574e8a61 Switch chunk encoding to type 2 where it was hardcoded type 1 before
The chunk encoding was hardcoded there because it mostly doesn't
matter what encoding is chosen in that test. Since type 1 is
battle-hardened enough, I'm switching to type 2 here so that we can
catch unexpected problems as a byproduct. My expectation is that the
chunk encoding doesn't matter anyway, as said, but then "unexpected
problems" contains the word "unexpected".
2016-03-20 23:32:20 +01:00
Brian Brazil 738af32057 template: Use zero-values for missing values.
Currently missing values will get the value <no value>
rather than the empty string. Using the empty string is
more consistent, and should be easier for users to deal with too.
2015-11-28 13:45:32 +00:00
Julius Volz af513468eb Fix some dead code, missing error checks, shadowings.
I applied
https://medium.com/@jgautheron/quality-pipeline-for-go-projects-497e34d6567
and was greeted with a deluge of warnings, most of which were not
applicable or really fixable realistically. These are some of the first
ones I decided to fix.
2015-09-14 12:21:34 +02:00
Julius Volz 995d3b831d Fix most golint warnings.
This is with `golint -min_confidence=0.5`.

I left several lint warnings untouched because they were either
incorrect or I felt it was better not to change them at the moment.
2015-08-26 12:44:46 +02:00
Fabian Reinartz d6b8da8d43 Switch promql types to common/model 2015-08-25 13:49:14 +02:00
Fabian Reinartz 306e8468a0 Switch from client_golang/model to common/model 2015-08-21 13:33:38 +02:00
Julius Volz bbc8b8490e Switch human-readable times to UTC.
This fixes https://github.com/prometheus/prometheus/issues/829
2015-06-23 21:26:05 +02:00
Julius Volz d868264bb8 Improve UI of /alerts page.
Changes to the UI:
- "Active Since" timestamps are now human-readable.
- Alerting rules are now pretty-printed better.
- Labels are no longer just strings, but alert bubbles (like we do on
  the status page for base labels).
- Alert states and target health states are now capitalized in the
  presentation layer rather than at the source.
2015-06-23 18:48:45 +02:00
Fabian Reinartz fe301d7946 promql: remove global flags 2015-06-15 19:01:06 +02:00
Fabian Reinartz 0de6edbdfc Move pkg/ to util/ 2015-06-01 21:12:32 +02:00
Fabian Reinartz dbc0d30e3e Move string functionality to pkg/strutil 2015-06-01 21:12:32 +02:00
Fabian Reinartz f45a5cab60 Move templates package to pkg/template 2015-06-01 21:12:31 +02:00