* Ability to set VM's power state and retrieve backing Tart VM's name
* Validate user-provided "powerState" field
* Introduce TestSpecUpdatePowerStateSuspend
* Introduce TestSpecUpdatePowerStateStopped
* OpenAPI specification: add note about suspended VMs to "tartName" desc.
* Sometimes we need to wait more than 30 seconds
* Simplify state reconciliation and support changing Softnet settings
* Remove unused "updateFunc" parameter from syncOnDiskVMs()
* Don't take an address of a loop variable
* ensure → ensures
* updateVMState(): don't forget to update VMState
* Introduce TestSpecUpdateSoftnet integration test
* Update OpenAPI specification to include generation/observedGeneration
* Support for prefixed Orchard Controller API URLs
* Fix Swagger UI
* Remove spurious "fmt" import
* Use url.URL in order to correctly calculate API path for Swagger UI
* API: introduce ability to watch a VM
* Document ?watch=true for GET /vms/{name} in the OpenAPI specification
* WatchVM: ensure that goroutine is terminated on early return with error
* WatchVM: close channels on goroutine exit
* WatchVM: ensure that we wait for the goroutine after additional barriers
* WatchVM: ignore unexpected keys instead of throwing an error
* WatchVM: perform context-aware writes to a bounded channel
* WatchVM: don't forget to close errCh on goroutine exit too
* WatchVM: don't close readyCh in goroutine to avoid ambiguity
* WatchVM: filter out spurious KVs that signify VM deletion
* Small timout for worker notification
It seems at the moment if a worker re-establishes notify stream (for example, if network flips or proxy breaks the connection) then we can see "no worker registered with this name" errors.
This change makes Notifier to wait for 30 seconds before failing, at the time of calling `Notifier#Notify` we know such worker exists.
PS not sure if we need to make the timeout configurable.
* Wait via context
* Make sure all `context`s for `Notify` is time bounded
* Lint issues
* Allow creating VMs with implicit CPU and memory
* Clarify why cpu/memory can be 0 a bit better
* Controller(API): don't forget to update DefaultCPU and DefaultMemory
* Add an integration test for implicit CPU and memory
* Introduce WebSocket-based RPC v2
* go test: add -ldflags="-B gobuildid"
* No need to change the "controller.workerNotifier.Notify()" error message
* No need to modify Protocol Buffers/gRPC generated code
* rpcWatch(): explain that connection shouldn't be normally be closed
* Avoid "port forwarding failed: " repetition in error messages
* Improve comments and avoid repetition in IP resolution errors
* API: only overwrite specific worker fields when worker already exists
* Don't forget to return when creating new worker
* Return updated worker when updating the worker
* POST /v1/workers: do not list workers in a single update txn
* schedulingLoopIteration(): do not list workers in a single update txn
* .golangci.yml: remove mentions of fully deprecated linters
* Schedule opportunistically and more granularly
To avoid transaction conflicts.
* Measure scheduling loop iteration duration and log it at debugging level
* Use "continue NextWorker" instead of just "continue" for clarity
* Controller: emit lifecycle events when the VM gets restarted or deleted
* vm_{scheduling,run}_time → vm_{scheduling,run}_duration for clarity
* Update VM endpoint: only update VM started time when zero
* proxy.Connections(): require io.ReadWriteCloser instead of net.Conn
* Orchard Controller: implement an SSH server that acts as a jump host
* Issue a warning if the name used will be invalid in the future
* Further restrict uppercase characters in names in the future
The rationale is similar to https://github.com/kubernetes/kubernetes/issues/71140.
We won't want to munge the user's input and introduce subtle bugs doing
lowercase comparisons.
Nikolay Edigaryev
Fedor Korotkov
Mark McWhirter