Running the app with `-app.pipe.cleanup-only` will delete any records
from Consul that are marked as deleted more than ten minutes ago, then
exit.
This is so you can set it to run as a cronjob, e.g. once an hour.
Shortcut reports are sent to update the UI quickly, on events like a
container starting. We don't need to persist them in the time-travel
data since the same information will be covered by a regular report a
few seconds later.
Previously we would merge all reports in a 15-second window.
Now we use a 'quantum' of 3 seconds, similar to the single-user app.
E.g. a 30-node cluster will have 150 individual reports over 15
seconds, but the new code will merge 5 pre-merged reports plus 20-ish
very recent individual ones.
This limits the max heap size used for deserialising, since we only do
3 seconds at once per instance.
Individual reports are still put into the cache, but should get
displaced by the pre-merged ones under LRU.
In a multitenant system it is useful to be able to drill into which
tenants have the most or biggest reports.
Signed-off-by: Bryan Boreham <bryan@weave.works>
* Pass Go context down to Renderers
This is useful for cancellation or tracing.
* Add tracing spans to app
Also log things like number of nodes in Map, total number of reports.
This requires no report reading / merging.
We plan to expose this in the HTTP API, so the UI gets a cheap way of
checking whether the app is currently receiving data from probes.
golint has gained a new check and we don't freeze the golint version so CI was
failing on unrelated PRs:
app/multitenant/consul_client.go:69:2: redundant if ...; err != nil check, just return error instead.
report/marshal.go:188:2: redundant if ...; err != nil check, just return error instead.
Fix those!
* Hacky working prototype.
* Operate with time.Duration offset instead of fixed timestamp.
* Polished the backend code.
* Made a nicer UI component.
* Small refactorings of the websockets code.
* Fixed the backend tests.
* Better websocketing and smoother transitions
* Small styling refactoring.
* Detecting empty topologies.
* Improved error messaging.
* Addressed some of David's comments.
* Moved nodesDeltaBuffer to a global state to fix the paused status rendering bug.
* Small styling changes
* Changed the websocket global state variables a bit.
* Polishing & refactoring.
* More polishing.
* Final refactoring.
* Addressed a couple of bugs.
* Hidden the timeline control behind Cloud context and a feature flag.
* Addressed most of @davkal's comments.
* Added mixpanel tracking.
Symptoms:
> app/control_router.go:44:38: error strings should not be capitalized or end with punctuation or a newline
This is blocking the build on:
https://circleci.com/gh/kinvolk/scope/363
