API: remove ProcessListContainer/ListProcesses

This commit will remove ProcessListContainer API from VCSandbox
and ListProcesses from agent.proto.

Fixes: #1668

Signed-off-by: bin <bin@hyper.sh>

src/agent/protocols/hack/update-generated-proto.sh

@@ -65,7 +65,7 @@ $GOPATH/src/github.com/kata-containers/kata-containers/src/agent/protocols/proto
 }
 
 if [ "$(basename $(pwd))" != "agent" ]; then
-	die "Please go to directory of protocols before execute this shell"
+	die "Please go to root directory of agent before execute this shell"
 fi
 
 # Protocol buffer files required to generate golang/rust bindings.

src/agent/protocols/protos/agent.proto

@@ -32,7 +32,6 @@ service AgentService {
 	rpc ExecProcess(ExecProcessRequest) returns (google.protobuf.Empty);
 	rpc SignalProcess(SignalProcessRequest) returns (google.protobuf.Empty);
 	rpc WaitProcess(WaitProcessRequest) returns (WaitProcessResponse); // wait & reap like waitpid(2)
-	rpc ListProcesses(ListProcessesRequest) returns (ListProcessesResponse);
 	rpc UpdateContainer(UpdateContainerRequest) returns (google.protobuf.Empty);
 	rpc StatsContainer(StatsContainerRequest) returns (StatsContainerResponse);
 	rpc PauseContainer(PauseContainerRequest) returns (google.protobuf.Empty);
@@ -126,18 +125,6 @@ message WaitProcessResponse {
 	int32 status = 1;
 }
 
-// ListProcessesRequest contains the options used to list running processes inside the container
-message ListProcessesRequest {
-	string container_id = 1;
-	string format = 2;
-	repeated string args = 3;
-}
-
-// ListProcessesResponse represents the list of running processes inside the container
-message ListProcessesResponse {
-	bytes process_list = 1;
-}
-
 message UpdateContainerRequest {
 	string container_id = 1;
 	LinuxResources resources = 2;

src/agent/src/rpc.rs

@@ -20,9 +20,8 @@ use anyhow::{anyhow, Context, Result};
 use oci::{LinuxNamespace, Root, Spec};
 use protobuf::{RepeatedField, SingularPtrField};
 use protocols::agent::{
-    AgentDetails, CopyFileRequest, GuestDetailsResponse, Interfaces, ListProcessesResponse,
+    AgentDetails, CopyFileRequest, GuestDetailsResponse, Interfaces, Metrics, OOMEvent,
-    Metrics, OOMEvent, ReadStreamResponse, Routes, StatsContainerResponse, WaitProcessResponse,
+    ReadStreamResponse, Routes, StatsContainerResponse, WaitProcessResponse, WriteStreamResponse,
-    WriteStreamResponse,
 };
 use protocols::empty::Empty;
 use protocols::health::{
@@ -576,91 +575,6 @@ impl protocols::agent_ttrpc::AgentService for AgentService {
             .map_err(|e| ttrpc_error(ttrpc::Code::INTERNAL, e.to_string()))
     }
 
-    async fn list_processes(
-        &self,
-        _ctx: &TtrpcContext,
-        req: protocols::agent::ListProcessesRequest,
-    ) -> ttrpc::Result<ListProcessesResponse> {
-        let cid = req.container_id.clone();
-        let format = req.format.clone();
-        let mut args = req.args.into_vec();
-        let mut resp = ListProcessesResponse::new();
-
-        let s = Arc::clone(&self.sandbox);
-        let mut sandbox = s.lock().await;
-
-        let ctr = sandbox.get_container(&cid).ok_or_else(|| {
-            ttrpc_error(
-                ttrpc::Code::INVALID_ARGUMENT,
-                "invalid container id".to_string(),
-            )
-        })?;
-
-        let pids = ctr.processes().unwrap();
-
-        match format.as_str() {
-            "table" => {}
-            "json" => {
-                resp.process_list = serde_json::to_vec(&pids).unwrap();
-                return Ok(resp);
-            }
-            _ => {
-                return Err(ttrpc_error(
-                    ttrpc::Code::INVALID_ARGUMENT,
-                    "invalid format!".to_string(),
-                ));
-            }
-        }
-
-        // format "table"
-        if args.is_empty() {
-            // default argument
-            args = vec!["-ef".to_string()];
-        }
-
-        let output = tokio::process::Command::new("ps")
-            .args(args.as_slice())
-            .stdout(Stdio::piped())
-            .output()
-            .await
-            .expect("ps failed");
-
-        let out: String = String::from_utf8(output.stdout).unwrap();
-        let mut lines: Vec<String> = out.split('\n').map(|v| v.to_string()).collect();
-
-        let pid_index = lines[0]
-            .split_whitespace()
-            .position(|v| v == "PID")
-            .unwrap();
-
-        let mut result = String::new();
-        result.push_str(lines[0].as_str());
-
-        lines.remove(0);
-        for line in &lines {
-            if line.trim().is_empty() {
-                continue;
-            }
-
-            let fields: Vec<String> = line.split_whitespace().map(|v| v.to_string()).collect();
-
-            if fields.len() < pid_index + 1 {
-                warn!(sl!(), "corrupted output?");
-                continue;
-            }
-            let pid = fields[pid_index].trim().parse::<i32>().unwrap();
-
-            for p in &pids {
-                if pid == *p {
-                    result.push_str(line.as_str());
-                }
-            }
-        }
-
-        resp.process_list = Vec::from(result);
-        Ok(resp)
-    }
-
     async fn update_container(
         &self,
         _ctx: &TtrpcContext,

src/runtime/virtcontainers/agent.go

@@ -132,9 +132,6 @@ type agent interface {
 	// readProcessStderr will tell the agent to read a process stderr
 	readProcessStderr(ctx context.Context, c *Container, processID string, data []byte) (int, error)
 
-	// processListContainer will list the processes running inside the container
-	processListContainer(ctx context.Context, sandbox *Sandbox, c Container, options ProcessListOptions) (ProcessList, error)
-
 	// updateContainer will update the resources of a running container
 	updateContainer(ctx context.Context, sandbox *Sandbox, c Container, resources specs.LinuxResources) error
 

src/runtime/virtcontainers/container.go

@@ -1125,18 +1125,6 @@ func (c *Container) ioStream(processID string) (io.WriteCloser, io.Reader, io.Re
 	return stream.stdin(), stream.stdout(), stream.stderr(), nil
 }
 
-func (c *Container) processList(ctx context.Context, options ProcessListOptions) (ProcessList, error) {
-	if err := c.checkSandboxRunning("ps"); err != nil {
-		return nil, err
-	}
-
-	if c.state.State != types.StateRunning {
-		return nil, fmt.Errorf("Container not running, impossible to list processes")
-	}
-
-	return c.sandbox.agent.processListContainer(ctx, c.sandbox, *c, options)
-}
-
 func (c *Container) stats(ctx context.Context) (*ContainerStats, error) {
 	if err := c.checkSandboxRunning("stats"); err != nil {
 		return nil, err

src/runtime/virtcontainers/documentation/api/1.0/api.md

@@ -582,7 +582,6 @@ type VCSandbox interface {
 	ResumeContainer(containerID string) error
 	EnterContainer(containerID string, cmd types.Cmd) (VCContainer, *Process, error)
 	UpdateContainer(containerID string, resources specs.LinuxResources) error
-	ProcessListContainer(containerID string, options ProcessListOptions) (ProcessList, error)
 	WaitProcess(containerID, processID string) (int32, error)
 	SignalProcess(containerID, processID string, signal syscall.Signal, all bool) error
 	WinsizeProcess(containerID, processID string, height, width uint32) error
@@ -916,7 +915,6 @@ type VCContainer interface {
 * [`EnterContainer`](#entercontainer)
 * [`StatusContainer`](#statuscontainer)
 * [`KillContainer`](#killcontainer)
-* [`ProcessListContainer`](#processlistcontainer)
 * [`StatsContainer`](#statscontainer)
 * [`PauseContainer`](#pausecontainer)
 * [`ResumeContainer`](#resumecontainer)
@@ -977,13 +975,6 @@ func StatusContainer(sandboxID, containerID string) (ContainerStatus, error)
 func KillContainer(sandboxID, containerID string, signal syscall.Signal, all bool) error
 ```
 
-#### `ProcessListContainer`
-```Go
-// ProcessListContainer is the virtcontainers entry point to list
-// processes running inside a container
-func ProcessListContainer(sandboxID, containerID string, options ProcessListOptions) (ProcessList, error)
-```
-
 #### `StatsContainer`
 ```Go
 // StatsContainer return the stats of a running container

src/runtime/virtcontainers/interfaces.go

@@ -57,7 +57,6 @@ type VCSandbox interface {
 	ResumeContainer(ctx context.Context, containerID string) error
 	EnterContainer(ctx context.Context, containerID string, cmd types.Cmd) (VCContainer, *Process, error)
 	UpdateContainer(ctx context.Context, containerID string, resources specs.LinuxResources) error
-	ProcessListContainer(ctx context.Context, containerID string, options ProcessListOptions) (ProcessList, error)
 	WaitProcess(ctx context.Context, containerID, processID string) (int32, error)
 	SignalProcess(ctx context.Context, containerID, processID string, signal syscall.Signal, all bool) error
 	WinsizeProcess(ctx context.Context, containerID, processID string, height, width uint32) error

src/runtime/virtcontainers/kata_agent.go

@@ -120,7 +120,6 @@ const (
 	grpcListRoutesRequest        = "grpc.ListRoutesRequest"
 	grpcAddARPNeighborsRequest   = "grpc.AddARPNeighborsRequest"
 	grpcOnlineCPUMemRequest      = "grpc.OnlineCPUMemRequest"
-	grpcListProcessesRequest     = "grpc.ListProcessesRequest"
 	grpcUpdateContainerRequest   = "grpc.UpdateContainerRequest"
 	grpcWaitProcessRequest       = "grpc.WaitProcessRequest"
 	grpcTtyWinResizeRequest      = "grpc.TtyWinResizeRequest"
@@ -1662,26 +1661,6 @@ func (k *kataAgent) winsizeProcess(ctx context.Context, c *Container, processID
 	return err
 }
 
-func (k *kataAgent) processListContainer(ctx context.Context, sandbox *Sandbox, c Container, options ProcessListOptions) (ProcessList, error) {
-	req := &grpc.ListProcessesRequest{
-		ContainerId: c.id,
-		Format:      options.Format,
-		Args:        options.Args,
-	}
-
-	resp, err := k.sendReq(ctx, req)
-	if err != nil {
-		return nil, err
-	}
-
-	processList, ok := resp.(*grpc.ListProcessesResponse)
-	if !ok {
-		return nil, fmt.Errorf("Bad list processes response")
-	}
-
-	return processList.ProcessList, nil
-}
-
 func (k *kataAgent) updateContainer(ctx context.Context, sandbox *Sandbox, c Container, resources specs.LinuxResources) error {
 	grpcResources, err := grpc.ResourcesOCItoGRPC(&resources)
 	if err != nil {
@@ -1939,9 +1918,6 @@ func (k *kataAgent) installReqFunc(c *kataclient.AgentClient) {
 	k.reqHandlers[grpcOnlineCPUMemRequest] = func(ctx context.Context, req interface{}) (interface{}, error) {
 		return k.client.AgentServiceClient.OnlineCPUMem(ctx, req.(*grpc.OnlineCPUMemRequest))
 	}
-	k.reqHandlers[grpcListProcessesRequest] = func(ctx context.Context, req interface{}) (interface{}, error) {
-		return k.client.AgentServiceClient.ListProcesses(ctx, req.(*grpc.ListProcessesRequest))
-	}
 	k.reqHandlers[grpcUpdateContainerRequest] = func(ctx context.Context, req interface{}) (interface{}, error) {
 		return k.client.AgentServiceClient.UpdateContainer(ctx, req.(*grpc.UpdateContainerRequest))
 	}

src/runtime/virtcontainers/kata_agent_test.go

@@ -143,9 +143,6 @@ func TestKataAgentSendReq(t *testing.T) {
 	err = k.winsizeProcess(ctx, container, execid, 100, 200)
 	assert.Nil(err)
 
-	_, err = k.processListContainer(ctx, sandbox, Container{}, ProcessListOptions{})
-	assert.Nil(err)
-
 	err = k.updateContainer(ctx, sandbox, Container{}, specs.LinuxResources{})
 	assert.Nil(err)
 

src/runtime/virtcontainers/mock_agent.go

@@ -86,11 +86,6 @@ func (n *mockAgent) signalProcess(ctx context.Context, c *Container, processID s
 	return nil
 }
 
-// processListContainer is the Noop agent Container ps implementation. It does nothing.
-func (n *mockAgent) processListContainer(ctx context.Context, sandbox *Sandbox, c Container, options ProcessListOptions) (ProcessList, error) {
-	return nil, nil
-}
-
 // updateContainer is the Noop agent Container update implementation. It does nothing.
 func (n *mockAgent) updateContainer(ctx context.Context, sandbox *Sandbox, c Container, resources specs.LinuxResources) error {
 	return nil

src/runtime/virtcontainers/pkg/mock/mock.go

@@ -107,10 +107,6 @@ func (p *HybridVSockTTRPCMockImp) WaitProcess(ctx context.Context, req *pb.WaitP
 	return &pb.WaitProcessResponse{}, nil
 }
 
-func (p *HybridVSockTTRPCMockImp) ListProcesses(ctx context.Context, req *pb.ListProcessesRequest) (*pb.ListProcessesResponse, error) {
-	return &pb.ListProcessesResponse{}, nil
-}
-
 func (p *HybridVSockTTRPCMockImp) UpdateContainer(ctx context.Context, req *pb.UpdateContainerRequest) (*gpb.Empty, error) {
 	return emptyResp, nil
 }

src/runtime/virtcontainers/pkg/vcmock/sandbox.go

@@ -166,11 +166,6 @@ func (s *Sandbox) UpdateContainer(ctx context.Context, containerID string, resou
 	return nil
 }
 
-// ProcessListContainer implements the VCSandbox function of the same name.
-func (s *Sandbox) ProcessListContainer(ctx context.Context, containerID string, options vc.ProcessListOptions) (vc.ProcessList, error) {
-	return nil, nil
-}
-
 // WaitProcess implements the VCSandbox function of the same name.
 func (s *Sandbox) WaitProcess(ctx context.Context, containerID, processID string) (int32, error) {
 	return 0, nil

src/runtime/virtcontainers/pkg/vcmock/types.go

@@ -53,7 +53,6 @@ type Sandbox struct {
 	EnterContainerFunc       func(containerID string, cmd types.Cmd) (vc.VCContainer, *vc.Process, error)
 	MonitorFunc              func() (chan error, error)
 	UpdateContainerFunc      func(containerID string, resources specs.LinuxResources) error
-	ProcessListContainerFunc func(containerID string, options vc.ProcessListOptions) (vc.ProcessList, error)
 	WaitProcessFunc          func(containerID, processID string) (int32, error)
 	SignalProcessFunc        func(containerID, processID string, signal syscall.Signal, all bool) error
 	WinsizeProcessFunc       func(containerID, processID string, height, width uint32) error

src/runtime/virtcontainers/sandbox.go

@@ -1273,19 +1273,6 @@ func (s *Sandbox) DeleteContainer(ctx context.Context, containerID string) (VCCo
 	return c, nil
 }
 
-// ProcessListContainer lists every process running inside a specific
-// container in the sandbox.
-func (s *Sandbox) ProcessListContainer(ctx context.Context, containerID string, options ProcessListOptions) (ProcessList, error) {
-	// Fetch the container.
-	c, err := s.findContainer(containerID)
-	if err != nil {
-		return nil, err
-	}
-
-	// Get the process list related to the container.
-	return c.processList(ctx, options)
-}
-
 // StatusContainer gets the status of a container
 // TODO: update container status properly, see kata-containers/runtime#253
 func (s *Sandbox) StatusContainer(containerID string) (ContainerStatus, error) {

tools/agent-ctl/Cargo.lock

@@ -146,14 +146,13 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "cgroups-rs"
-version = "0.2.1"
+version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "348eb6d8e20a9f5247209686b7d0ffc2f4df40ddcb95f9940de55a94a655b3f5"
+checksum = "d4cec688ee0fcd143ffd7893ce2c9857bfc656eb1f2a27202244b72f08f5f8ed"
 dependencies = [
  "libc",
  "log",
- "nix 0.18.0",
+ "nix 0.20.0",
- "procinfo",
  "regex",
 ]
 
@@ -484,9 +483,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.79"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2448f6066e80e3bfc792e9c98bf705b4b0fc6e8ef5b43e5889aff0eaa9c58743"
+checksum = "9385f66bf6105b241aa65a61cb923ef20efc665cb9f9bb50ac2f0c4b7f378d41"
 
 [[package]]
 name = "log"
@@ -585,18 +584,6 @@ dependencies = [
  "void",
 ]
 
-[[package]]
-name = "nix"
-version = "0.18.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83450fe6a6142ddd95fb064b746083fc4ef1705fe81f64a64e1d4b39f54a1055"
-dependencies = [
- "bitflags",
- "cc",
- "cfg-if 0.1.10",
- "libc",
-]
-
 [[package]]
 name = "nix"
 version = "0.19.1"
@@ -610,10 +597,16 @@ dependencies = [
 ]
 
 [[package]]
-name = "nom"
+name = "nix"
-version = "2.2.1"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf51a729ecf40266a2368ad335a5fdde43471f545a967109cd62146ecf8b66ff"
+checksum = "fa9b4819da1bc61c0ea48b63b7bc8604064dd43013e7cc325df098d49cd7c18a"
+dependencies = [
+ "bitflags",
+ "cc",
+ "cfg-if 1.0.0",
+ "libc",
+]
 
 [[package]]
 name = "ntapi"
@@ -738,7 +731,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "059a34f111a9dee2ce1ac2826a68b24601c4298cfeb1a587c3cb493d5ab46f52"
 dependencies = [
  "libc",
- "nix 0.18.0",
+ "nix 0.19.1",
 ]
 
 [[package]]
@@ -771,18 +764,6 @@ dependencies = [
  "unicode-xid 0.2.1",
 ]
 
-[[package]]
-name = "procinfo"
-version = "0.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ab1427f3d2635891f842892dda177883dca0639e05fe66796a62c9d2f23b49c"
-dependencies = [
- "byteorder",
- "libc",
- "nom",
- "rustc_version",
-]
-
 [[package]]
 name = "prost"
 version = "0.5.0"
@@ -977,15 +958,6 @@ version = "0.1.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6e3bad0ee36814ca07d7968269dd4b7ec89ec2da10c4bb613928d3077083c232"
 
-[[package]]
-name = "rustc_version"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
-dependencies = [
- "semver",
-]
-
 [[package]]
 name = "rustjail"
 version = "0.1.0"
@@ -1038,21 +1010,6 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
-[[package]]
-name = "semver"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
-dependencies = [
- "semver-parser",
-]
-
-[[package]]
-name = "semver-parser"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
-
 [[package]]
 name = "serde"
 version = "1.0.114"

tools/agent-ctl/src/client.rs

@@ -79,9 +79,6 @@ const CMD_REPEAT: &'static str = "repeat";
 
 const DEFAULT_PROC_SIGNAL: &'static str = "SIGKILL";
 
-// Format is either "json" or "table".
-const DEFAULT_PS_FORMAT: &str = "json";
-
 const ERR_API_FAILED: &str = "API failed";
 
 static AGENT_CMDS: &'static [AgentCmd] = &[
@@ -155,11 +152,6 @@ static AGENT_CMDS: &'static [AgentCmd] = &[
         st: ServiceType::Agent,
         fp: agent_cmd_sandbox_list_routes,
     },
-    AgentCmd {
-        name: "ListProcesses",
-        st: ServiceType::Agent,
-        fp: agent_cmd_container_list_processes,
-    },
     AgentCmd {
         name: "MemHotplugByProbe",
         st: ServiceType::Agent,
@@ -1101,40 +1093,6 @@ fn agent_cmd_sandbox_get_guest_details(
     Ok(())
 }
 
-fn agent_cmd_container_list_processes(
-    ctx: &Context,
-    client: &AgentServiceClient,
-    _health: &HealthClient,
-    options: &mut Options,
-    args: &str,
-) -> Result<()> {
-    let mut req = ListProcessesRequest::default();
-
-    let ctx = clone_context(ctx);
-
-    let cid = utils::get_option("cid", options, args);
-
-    let mut list_format = utils::get_option("format", options, args);
-
-    if list_format == "" {
-        list_format = DEFAULT_PS_FORMAT.to_string();
-    }
-
-    req.set_container_id(cid);
-    req.set_format(list_format);
-
-    debug!(sl!(), "sending request"; "request" => format!("{:?}", req));
-
-    let reply = client
-        .list_processes(ctx, &req)
-        .map_err(|e| anyhow!("{:?}", e).context(ERR_API_FAILED))?;
-
-    info!(sl!(), "response received";
-        "response" => format!("{:?}", reply));
-
-    Ok(())
-}
-
 fn agent_cmd_container_wait_process(
     ctx: &Context,
     client: &AgentServiceClient,