Similar to video compression which uses key-frames and differences
between them: every N publishes we send a full report, but inbetween
we only send what has changed.
Fairly simple approach in the probe - hold on to the last full report,
and for the deltas remove anything that would be merged in from the
full report.
On the receiving side in the app it already merges a set of reports
together to produce the final output for rendering, so provided N is
smaller than that set we don't need to do anything different.
Deltas don't need to represent nodes that have disappeared - an
earlier full node will have that node so it would be merged into the
final output anyway.
This dependency makes it harder to see the structure of the program,
and sometimes complicates compilation.
Mostly just changing the source of strings that are already exported
from the report package. A few new strings have to be moved there,
plus the function `IsPauseImageName()`.
So we save space writing out empty topologies.
Need to fix up `app_client_internal_test.go` to use Scope's
`test/reflect` package that understands empty==nil, so now it doesn't
need a previous workaround.
Remove a similar workaround in `probe_internal_test.go` that isn't
necessary since it's already using that package.
This covers:
- Implementation of the job resource in probe
- Reporter changes for the job
- Add Describe Control to the job
- Pass job object to the kube controller renderer
ToDo:
- Need to decide the shape for the Job.
Signed-off-by: Satyam Zode <satyamzode@gmail.com>
This commit will add a new control i.e. Describe
which will describe a k8s resource similar to kubectl describe.
Signed-off-by: Akash Srivastava <akashsrivastava4927@gmail.com>
- Add control on volume snapshot to take clone
- Add control on volume snapshot to delete it
Signed-off-by: Akash Srivastava <akash.srivastava@openebs.io>
- Add a new client in probe/kubernetes/client.go
which will be used to fetch details of Snapshot CRD
- Visualize VolumeSnapshot and VolumeSnapshotData
- Add adjacency between PV and VolumeSnapshot
- Add adjacency between VolumeSnapshot and VolumeSnapshotData
- Add snapshot filter to hide and show snapshots
Signed-off-by: Akash Srivastava <akash.srivastava@openebs.io>
The fixup() method was modifying a copy of its input, so you could get
duplicate keys in the output. Change it to return the new slice.
Thankfully this is rare: in most cases WithLatests() is called with
fields that are not duplicates of existing ones.
This saves memory and CPU time encoding and decoding.
We assume that no probes that old are still running, and we don't need
to reconstruct the data for saved historical reports because controls
are not relevant to historical nodes.
