This commit simplifies the TargetHealth type and moves the target
status into the target itself. This also removes a race where error
and last scrape time could have been out of sync.
Formalize ZeroSamplePair as return value for non-existing samples.
Change LastSamplePairForFingerprint to return a SamplePair (and not a
pointer to it), which saves allocations in a potentially extremely
frequent call.
It's actually happening in several places (and for flags, we use the
standard Go time.Duration...). This at least reduces all our
home-grown parsing to one place (in model).
This enables metric name autocompletion for every word in an expression,
not just the very first one. It would be great to also support all
language keywords during autocompletion in the future.
This adapts some functionality from the Go standard library for string
literal lexing and unquoting/unescaping.
The following string types are now supported:
Double- or single-quoted strings:
These support all escape sequences that Go supports in double-quoted
string literals. The difference is that Prometheus also has
single-quoted strings (instead of single-quoted runes in Go). Raw
newlines are not allowed.
Backtick-quoted raw strings:
Strings quoted in backticks are treated as raw strings just like in Go
and may contain raw newlines and other special characters directly.
Fixes https://github.com/prometheus/prometheus/issues/1122
Fixes https://github.com/prometheus/prometheus/issues/1121
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.
Let's remove the silencing links until we actually have support for that.
A silencing link shouldn't only redirect to Alertmanager, but also open a
silencing dialog for the respective alert name or active alert element.
This got broken in
78047326b4
since it stopped using the DefaultServeMux.
This approach will defer pprof requests to the DefaultServeMux, which
may or may not have pprof enabled (in Prometheus, it gets it included in
main.go). An alternative approach would be to duplicate the four lines in
https://golang.org/src/net/http/pprof/pprof.go#L62. When choosing that
approach though, we would not automatically gain any new endpoints added
by net/http/pprof or other /debug endpoints in the future.
Besides fixing https://github.com/prometheus/prometheus/issues/805 by
making the entire externally reachable server URL configurable, this
adds tests for the "globalURL" template function and makes it easier to
test other such functions in the future.
This breaks the `web.Hostname` flag (and introduces `web.external-url`).
This flag is likely only used by few users, so I hope that's
justifiable.
Fixes https://github.com/prometheus/prometheus/issues/805
Also remove hidden input fields that are not used anymore, because the
query params are now passed as JSON to the AJAX function. This also has
the wonderful side effect that we're no longer sending all the other
non-hidden fields along to the query endpoints anymore.
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.
This commit adds a federation handler on /federate. It accepts `match[]`
query parameters containing vector selectors. Their intersection determines
the in-memory metrics that are returned in the same way as the
/metrics endpoint does (modulo sorting).
Version information is determined at build-time and thus there is
no need to pass it down from main. In its own package it can
be used from various other packages.
Also, rearrange and clean up some things to make this work.
The textarea starts as a single line, but auto-expands when entering
multiple lines (e.g. via Shift+Enter). Pressing just "Enter" still
executes the expression.
