We defer starting the ebpf tracer until we've set the global var which
is referenced by the callback functions. Previously the var could be
unset when the callbacks are invoked, resulting in a segfault.
Fixes#2687.
* Initial top level control.
* Added the jump buttons.
* Tiny styling adjustments.
* Massive renaming.
* Pause info
* Added slider marks.
* Improved messaging.
* Freeze all updates when paused.
* Repositioned for Configure button.
* Improved the flow.
* Working browsing through slider.
* Small styling.
* Hide time travel button behind the feature flag.
* Fixed actions.
* Elements positioning corner cases.
* Removed nodes delta buffering code.
* Fixed the flow.
* Fixed almost all API call cases.
* Final touches
* Fixed the tests.
* Fix resource view updates when time travelling.
* Added some comments.
* Addressed some of @foot's comments.
ProcNet.Next does not allocate Connection structs, for efficiency.
Instead it always returns a *Connection pointing to the same instance.
As a result, any mutations by the caller to struct elements that
aren't actually set by ProcNet.Next, in particular Connection.Proc,
are carried across to subsequent calls.
This had hilarious consequences: connections referencing an inode
which we hadn't come across during proc walking would be associated
with the process corresponding to the last successfully looked up
inode.
The fix is to clear out the garbage left over from previous calls.
Fixes#2638.
The figure is inaccurate since it counts containers across all
hosts. Getting the count correct is non-trivial, so it's better to not
show the figure at all.
NB: the count still shows up on mouse-over of the link, but that is
defensible and not (very) confusing since the link represents the
image, not the image on a particular host, and it's the same count
that show up as the minor label in the container images view.
Fixes#2681.
The same container image may be in use on multiple hosts. The
latest-map HostNodeID of a node in the ContainerImage topology is
therefore meaningless - it gets set to whatever host reported that
image last in the time window covered by the report. Hence using it as
a basis for mapping to hosts, as we did, a) fails to associate images
with all the right hosts (hence they are missing from the host details
panel), and b) causes that association to change semi-randomly (hence
the list in the details panel is unstable).
By contrast, the host topology parents of container image nodes is the
complete set of all hosts the image is used on. So making that the
basis for mapping fixes the problem.
The same technique - mapping based on host parents rather than
latest-map HostNodeID - also works for the other nodes we are mapping:
processes, containers and pods. So we might as well use it there
too. That's also what Map2Parent does in other topology renderers.
Fixes#2629.
