* promql: Allow injecting fake tokens into the generated parser
Yacc grammars do not support having multiple start symbols.
To work around that restriction, it is possible to inject fake tokens into the lexer stream,
as described here https://www.gnu.org/software/bison/manual/html_node/Multiple-start_002dsymbols.html .
This is part of the parser rewrite effort described in #6256.
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
For yacc generated parsers there is the convention to capitalize the names of item types provided by the lexer, which makes it easy to distinct lexer tokens (capitalized) from nonterminal symbols (not capitalized) in language grammars.
This convention is also followed by the (non generated) go compiler (see https://golang.org/pkg/go/token/#Token).
Part of the parser rewrite described in #6256.
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
This is the first step towards a generated lexer as described in #6256.
It adds methods to the parser struct, that make it implement the yyLexer interface required by a yacc generated parser, as described here: https://godoc.org/golang.org/x/tools/cmd/goyacc .
The yyLexer interface is implemented by the parser struct instead of the lexer struct for the following reasons:
* Both parsers have a lookahead that the lexer does not know about. This solution makes it possible to synchronize these lookaheads when switching parsers.
* The routines to handle parser errors are not accessible to the lexer.
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
It is possible that desired shards is always a bit higher than the
number of shards (less than 30%) and by exporting desired shards as the
raw number it will be easy to tell if a Prometheus is in that situation.
Signed-off-by: Chris Marchbanks <csmarchbanks@gmail.com>
When using both a label and the suffix+label in the
relabel config. It's possible that Prometheus remove
the suffx+label for no obvious reason. It's due to a
collision when merging labels from target and from
the sample.
Signed-off-by: Geoffrey Beausire <g.beausire@criteo.com>
It's currently causing weird unknown problems in React tests that run
successfully everywhere else, and by now all the tests that run on
Travis also run on CircleCI, so Travis is not needed anymore.
Signed-off-by: Julius Volz <julius.volz@gmail.com>
* promql: Clean up parser struct
The parser struct used two have two somewhat misused fields:
peekCount int
token [3]item
By reading the code carefully one notices, that peekCount always has the value 0 or 1 and that only the first element of token is ever accessed.
To make this clearer, this commit replaces the token array with a single variable and the peekCount int with a boolean.
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
* Update remote storage maintainers to Callum and Chris
Signed-off-by: Julius Volz <julius.volz@gmail.com>
* Chat feedback
Signed-off-by: Julius Volz <julius.volz@gmail.com>
The "green" status of this badge was actually last updated 4 years ago,
until I manually ran a master branch test today that made the current
Travis test failures in the React tests visible. But those test failures
seem to be Travis-related and not real (the same tests pass on
CircleCI). Maybe we can completely remove Travis by now, but let's
remove the now-failing badge for now to not scare users.
Signed-off-by: Julius Volz <julius.volz@gmail.com>
* React UI: Fix tests harder
Again not sure why this passed last time (?), but now I was getting an
error about 'NaN' not being a valid value to assign to the 'height'
property of the input element. This changes it so that only the blur()
function is actually mocked out on the active input element.
Signed-off-by: Julius Volz <julius.volz@gmail.com>
* Fixup
Signed-off-by: Julius Volz <julius.volz@gmail.com>
Before this commit, the PromQL parser ran in two goroutines:
* The lexer goroutine that splits the input into tokens and sent them over a channel to
* the parser goroutine which produces the abstract syntax tree
The Problem with this approach is that the parser spends more time on goroutine creation
and syncronisation than on actual parsing.
This commit removes that concurrency and replaces the channel by a slice based buffer.
Benchmarks show that this makes the up to 7 times faster than before.
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
* Added CreateBlock and CreateHead functions to new file to make it reusable across packages.
Signed-off-by: Dipack P Panjabi <dipack.panjabi@gmail.com>
* adding additional unit tests for getDataCenter() in consul
Signed-off-by: Jean-Baptiste Le Duigou <jb.leduigou@gmail.com>
* Consult Tests : update comments to start with uppercase and end with point
Signed-off-by: Jean-Baptiste Le Duigou <jb.leduigou@gmail.com>
* Consult Test : using table-driven tests
Signed-off-by: Jean-Baptiste Le Duigou <jb.leduigou@gmail.com>
* Consul Test : cleaner syntax
Signed-off-by: Jean-Baptiste Le Duigou <jb.leduigou@gmail.com>
* Consul Test : even cleaner syntax
Signed-off-by: Jean-Baptiste Le Duigou <jb.leduigou@gmail.com>
* Consul Test : update comments
Signed-off-by: Jean-Baptiste Le Duigou <jb.leduigou@gmail.com>
* Fixing naming convention by removing underscore in function name
Signed-off-by: Jean-Baptiste Le Duigou <jb.leduigou@gmail.com>
* Removing duplicated test case for getDatacenter()
Signed-off-by: Jean-Baptiste Le Duigou <jb.leduigou@gmail.com>
This is built this way by the Makefile. One might ask if that's the
correct location for the `tsdb` tool or if it should be placed
top-level together with `prometheus` and `promtool`. But for now, it
should be excluded from Git like the latter two.
Signed-off-by: beorn7 <beorn@grafana.com>
It being a Reach Router <Link> caused the Reach router to not actually
leave the React app, even though the destination path was not a path
handled by the Reach Router.
Signed-off-by: Julius Volz <julius.volz@gmail.com>
According to the documentation, the target metadata API accepts it,
if no value for match_target has been provided. This was not the case
in the implementation.
This commit make the API behave as described in the docs.
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
This fixes two TypeScript errors. Not sure why we didn't catch the
breakage in the PR CI tests... also, updating TypeScript just for good
measure.
Signed-off-by: Julius Volz <julius.volz@gmail.com>
