prometheus

Commit Graph

Author	SHA1	Message	Date
beorn7	5b53aa1108	style: Replace `else if` cascades with `switch` Wiser coders than myself have come to the conclusion that a `switch` statement is almost always superior to a statement that includes any `else if`. The exceptions that I have found in our codebase are just these two: * The `if else` is followed by an additional statement before the next condition (separated by a `;`). * The whole thing is within a `for` loop and `break` statements are used. In this case, using `switch` would require tagging the `for` loop, which probably tips the balance. Why are `switch` statements more readable? For one, fewer curly braces. But more importantly, the conditions all have the same alignment, so the whole thing follows the natural flow of going down a list of conditions. With `else if`, in contrast, all conditions but the first are "hidden" behind `} else if `, harder to spot and (for no good reason) presented differently from the first condition. I'm sure the aforemention wise coders can list even more reasons. In any case, I like it so much that I have found myself recommending it in code reviews. I would like to make it a habit in our code base, without making it a hard requirement that we would test on the CI. But for that, there has to be a role model, so this commit eliminates all `if else` occurrences, unless it is autogenerated code or fits one of the exceptions above. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
beorn7	c3c7d44d84	lint: Adjust to the lint warnings raised by current versions of golint-ci We haven't updated golint-ci in our CI yet, but this commit prepares for that. There are a lot of new warnings, and it is mostly because the "revive" linter got updated. I agree with most of the new warnings, mostly around not naming unused function parameters (although it is justified in some cases for documentation purposes – while things like mocks are a good example where not naming the parameter is clearer). I'm pretty upset about the "empty block" warning to include `for` loops. It's such a common pattern to do something in the head of the `for` loop and then have an empty block. There is still an open issue about this: https://github.com/mgechev/revive/issues/810 I have disabled "revive" altogether in files where empty blocks are used excessively, and I have made the effort to add individual `// nolint:revive` where empty blocks are used just once or twice. It's borderline noisy, though, but let's go with it for now. I should mention that none of the "empty block" warnings for `for` loop bodies were legitimate. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
Matthieu MOREL	6375417324	refactor (util): move from github.com/pkg/errors to 'errors' and 'fmt' (#10877 ) Signed-off-by: Matthieu MOREL <mmorel-35@users.noreply.github.com> Co-authored-by: Matthieu MOREL <mmorel-35@users.noreply.github.com>	2 years ago
Levi Harrison	b5f6f8fb36	Switched to go-kit/log Signed-off-by: Levi Harrison <git@leviharrison.dev>	4 years ago
Julien Pivotto	120a84da5d	zookeeper: change upstream to github.com/go-zookeeper/zk Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	4 years ago
Ye Ji	2c715d22cf	Fix zk connection leak (#5675 ) Signed-off-by: Ye Ji <ye@hioscar.com>	6 years ago
Tariq Ibrahim	8fdfa8abea	refine error handling in prometheus (#5388 ) i) Uses the more idiomatic Wrap and Wrapf methods for creating nested errors. ii) Fixes some incorrect usages of fmt.Errorf where the error messages don't have any formatting directives. iii) Does away with the use of fmt package for errors in favour of pkg/errors Signed-off-by: tariqibrahim <tariq181290@gmail.com>	6 years ago
Simon Pasquier	f678e27eb6	: use latest release of staticcheck (#5057 ) : use latest release of staticcheck It also fixes a couple of things in the code flagged by the additional checks. Signed-off-by: Simon Pasquier <spasquie@redhat.com> Use official release of staticcheck Also run 'go list' before staticcheck to avoid failures when downloading packages. Signed-off-by: Simon Pasquier <spasquie@redhat.com>	6 years ago
Julius Volz	c3d6abc8e6	Fix some lint errors (#3334 ) I left the promql ones and some others untouched as I remember that @fabxc prefers them that way.	7 years ago
Alexander Kazarin	2c163f32a5	fix for issue 2976 (#3313 ) fix for null pointer exception in ZookeeperLogger	7 years ago
Fabian Reinartz	d21f149745	*: migrate to go-kit/log	7 years ago
Goutham Veeramachaneni	507790a357	Rework logging to use explicitly passed logger Mostly cleaned up the global logger use. Still some uses in discovery package. Signed-off-by: Goutham Veeramachaneni <cs14btech11014@iith.ac.in>	8 years ago
Stephan Erb	0b9fca983b	Fix reload of ZooKeeper service discovery config (#2669 ) Rational: * When the config is reloaded and the provider context is canceled, we need to exit the current ZK `TargetProvider.Run` method as a new provider will be instantiated. * In case `Stop` is called on the `ZookeeperTreeCache`, the update/events channel may not be closed as it is shared by multiple caches and would thus be double closed. * Stopping all `zookeeperTreeCacheNode`s on teardown ensures all associated watcher go-routines will be closed eagerly rather than implicityly on connection close events.	8 years ago
Stephan Erb	3038d0eb9b	Prevent deadlock in ZK TreeCache constructor by deferring the initial sync. Fixes #2254	8 years ago
Ulfsparre, Tommy	3730255392	remove deleted zookeeper nodes	8 years ago
Jonathan Boulle	38098f8c95	Add missing license headers Prometheus is Apache 2 licensed, and most source files have the appropriate copyright license header, but some were missing it without apparent reason. Correct that by adding it.	9 years ago
Julien Dehee	061fe2f364	Support AirBnB's Smartstack Nerve client for SD nerve's registration format differs from serverset. With this commit there is now a dedicated treecache file in util, and two separate files for serverset and nerve. Reference: https://github.com/airbnb/nerve	9 years ago

17 Commits (a16b876a05faef651f6fd4f3dd71a32a996ba367)