Kata sequence diagram

sequence-diagram.txt

Title: Kata Flow
participant CRI
participant CRIO
participant Kata Runtime
participant virtcontainers
participant hypervisor
participant agent
participant shim
participant proxy
#
CRI->CRIO: pod run
CRIO->Kata Runtime: create
Kata Runtime->virtcontainers: CreateSandbox()
virtcontainers->hypervisor: start the VM
virtcontainers->proxy: create proxy
Note left of virtcontainers: sandbox\n ready
#at this point I'd like to make sure we add activate

virtcontainers->agent: create container
CRIO->Kata Runtime: start
Kata Runtime->virtcontainers: StartSandbox()
Note left of virtcontainers: sandbox\n running
#
CRI->CRIO: ctr create
CRIO->Kata Runtime: create
Kata Runtime->virtcontainers: ContainerCreate()
virtcontainers->agent: CreateContainer()
shim->agent: who knows

Note left of virtcontainers: container\n ready

CRI->CRIO: ctr run
CRIO->Kata Runtime: start
Kata Runtime->virtcontainers: StartContainer()
virtcontainers->agent: StartContainer()
Note left of virtcontainers: container\n running
Note over Kata Runtime, virtcontainers, hypervisor, agent, shim, proxy: todo...
#
CRI->CRIO: ctr stop
CRIO->Kata Runtime: kill
Kata Runtime->virtcontainers: KillContainer()
virtcontainers->agent: Kill\n (process terminates)
Note over Kata Runtime, virtcontainers, hypervisor, agent: container no longer running, but what state\n exists on the host system still for the container\n compared to what is in the remove function?

#
CRI->CRIO: ctr remove
#
CRI->CRIO: pod stop
#
CRI->CRIO: pod remove