Update vendor folder (support for Delve RPC)

vendor/github.com/derekparker/delve/service/rpc1/client.go

@@ -0,0 +1,312 @@
+package rpc1
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"net/rpc"
+	"net/rpc/jsonrpc"
+
+	"sync"
+
+	"github.com/derekparker/delve/service/api"
+)
+
+// Client is a RPC service.Client.
+type RPCClient struct {
+	addr       string
+	processPid int
+	client     *rpc.Client
+	haltMu     sync.Mutex
+	haltReq    bool
+}
+
+var unsupportedApiError = errors.New("unsupported")
+
+// NewClient creates a new RPCClient.
+func NewClient(addr string) *RPCClient {
+	client, err := jsonrpc.Dial("tcp", addr)
+	if err != nil {
+		log.Fatal("dialing:", err)
+	}
+	return &RPCClient{
+		addr:   addr,
+		client: client,
+	}
+}
+
+func (c *RPCClient) ProcessPid() int {
+	var pid int
+	c.call("ProcessPid", nil, &pid)
+	return pid
+}
+
+func (c *RPCClient) Detach(kill bool) error {
+	return c.call("Detach", kill, nil)
+}
+
+func (c *RPCClient) Restart() error {
+	return c.call("Restart", nil, nil)
+}
+
+func (c *RPCClient) GetState() (*api.DebuggerState, error) {
+	state := new(api.DebuggerState)
+	err := c.call("State", nil, state)
+	return state, err
+}
+
+func (c *RPCClient) Continue() <-chan *api.DebuggerState {
+	ch := make(chan *api.DebuggerState)
+	c.haltMu.Lock()
+	c.haltReq = false
+	c.haltMu.Unlock()
+	go func() {
+		for {
+			c.haltMu.Lock()
+			if c.haltReq {
+				c.haltMu.Unlock()
+				close(ch)
+				return
+			}
+			c.haltMu.Unlock()
+			state := new(api.DebuggerState)
+			err := c.call("Command", &api.DebuggerCommand{Name: api.Continue}, state)
+			if err != nil {
+				state.Err = err
+			}
+			if state.Exited {
+				// Error types apparently cannot be marshalled by Go correctly. Must reset error here.
+				state.Err = fmt.Errorf("Process %d has exited with status %d", c.ProcessPid(), state.ExitStatus)
+			}
+			ch <- state
+			if err != nil || state.Exited {
+				close(ch)
+				return
+			}
+
+			isbreakpoint := false
+			istracepoint := true
+			for i := range state.Threads {
+				if state.Threads[i].Breakpoint != nil {
+					isbreakpoint = true
+					istracepoint = istracepoint && state.Threads[i].Breakpoint.Tracepoint
+				}
+			}
+
+			if !isbreakpoint || !istracepoint {
+				close(ch)
+				return
+			}
+		}
+	}()
+	return ch
+}
+
+func (c *RPCClient) Next() (*api.DebuggerState, error) {
+	state := new(api.DebuggerState)
+	err := c.call("Command", &api.DebuggerCommand{Name: api.Next}, state)
+	return state, err
+}
+
+func (c *RPCClient) Step() (*api.DebuggerState, error) {
+	state := new(api.DebuggerState)
+	err := c.call("Command", &api.DebuggerCommand{Name: api.Step}, state)
+	return state, err
+}
+
+func (c *RPCClient) StepInstruction() (*api.DebuggerState, error) {
+	state := new(api.DebuggerState)
+	err := c.call("Command", &api.DebuggerCommand{Name: api.StepInstruction}, state)
+	return state, err
+}
+
+func (c *RPCClient) SwitchThread(threadID int) (*api.DebuggerState, error) {
+	state := new(api.DebuggerState)
+	cmd := &api.DebuggerCommand{
+		Name:     api.SwitchThread,
+		ThreadID: threadID,
+	}
+	err := c.call("Command", cmd, state)
+	return state, err
+}
+
+func (c *RPCClient) SwitchGoroutine(goroutineID int) (*api.DebuggerState, error) {
+	state := new(api.DebuggerState)
+	cmd := &api.DebuggerCommand{
+		Name:        api.SwitchGoroutine,
+		GoroutineID: goroutineID,
+	}
+	err := c.call("Command", cmd, state)
+	return state, err
+}
+
+func (c *RPCClient) Halt() (*api.DebuggerState, error) {
+	state := new(api.DebuggerState)
+	c.haltMu.Lock()
+	c.haltReq = true
+	c.haltMu.Unlock()
+	err := c.call("Command", &api.DebuggerCommand{Name: api.Halt}, state)
+	return state, err
+}
+
+func (c *RPCClient) GetBreakpoint(id int) (*api.Breakpoint, error) {
+	breakpoint := new(api.Breakpoint)
+	err := c.call("GetBreakpoint", id, breakpoint)
+	return breakpoint, err
+}
+
+func (c *RPCClient) GetBreakpointByName(name string) (*api.Breakpoint, error) {
+	breakpoint := new(api.Breakpoint)
+	err := c.call("GetBreakpointByName", name, breakpoint)
+	return breakpoint, err
+}
+
+func (c *RPCClient) CreateBreakpoint(breakPoint *api.Breakpoint) (*api.Breakpoint, error) {
+	newBreakpoint := new(api.Breakpoint)
+	err := c.call("CreateBreakpoint", breakPoint, &newBreakpoint)
+	return newBreakpoint, err
+}
+
+func (c *RPCClient) ListBreakpoints() ([]*api.Breakpoint, error) {
+	var breakpoints []*api.Breakpoint
+	err := c.call("ListBreakpoints", nil, &breakpoints)
+	return breakpoints, err
+}
+
+func (c *RPCClient) ClearBreakpoint(id int) (*api.Breakpoint, error) {
+	bp := new(api.Breakpoint)
+	err := c.call("ClearBreakpoint", id, bp)
+	return bp, err
+}
+
+func (c *RPCClient) ClearBreakpointByName(name string) (*api.Breakpoint, error) {
+	bp := new(api.Breakpoint)
+	err := c.call("ClearBreakpointByName", name, bp)
+	return bp, err
+}
+
+func (c *RPCClient) AmendBreakpoint(bp *api.Breakpoint) error {
+	err := c.call("AmendBreakpoint", bp, nil)
+	return err
+}
+
+func (c *RPCClient) CancelNext() error {
+	return unsupportedApiError
+}
+
+func (c *RPCClient) ListThreads() ([]*api.Thread, error) {
+	var threads []*api.Thread
+	err := c.call("ListThreads", nil, &threads)
+	return threads, err
+}
+
+func (c *RPCClient) GetThread(id int) (*api.Thread, error) {
+	thread := new(api.Thread)
+	err := c.call("GetThread", id, &thread)
+	return thread, err
+}
+
+func (c *RPCClient) EvalVariable(scope api.EvalScope, symbol string) (*api.Variable, error) {
+	v := new(api.Variable)
+	err := c.call("EvalSymbol", EvalSymbolArgs{scope, symbol}, v)
+	return v, err
+}
+
+func (c *RPCClient) SetVariable(scope api.EvalScope, symbol, value string) error {
+	var unused int
+	return c.call("SetSymbol", SetSymbolArgs{scope, symbol, value}, &unused)
+}
+
+func (c *RPCClient) ListSources(filter string) ([]string, error) {
+	var sources []string
+	err := c.call("ListSources", filter, &sources)
+	return sources, err
+}
+
+func (c *RPCClient) ListFunctions(filter string) ([]string, error) {
+	var funcs []string
+	err := c.call("ListFunctions", filter, &funcs)
+	return funcs, err
+}
+
+func (c *RPCClient) ListTypes(filter string) ([]string, error) {
+	var types []string
+	err := c.call("ListTypes", filter, &types)
+	return types, err
+}
+
+func (c *RPCClient) ListPackageVariables(filter string) ([]api.Variable, error) {
+	var vars []api.Variable
+	err := c.call("ListPackageVars", filter, &vars)
+	return vars, err
+}
+
+func (c *RPCClient) ListPackageVariablesFor(threadID int, filter string) ([]api.Variable, error) {
+	var vars []api.Variable
+	err := c.call("ListThreadPackageVars", &ThreadListArgs{Id: threadID, Filter: filter}, &vars)
+	return vars, err
+}
+
+func (c *RPCClient) ListLocalVariables(scope api.EvalScope) ([]api.Variable, error) {
+	var vars []api.Variable
+	err := c.call("ListLocalVars", scope, &vars)
+	return vars, err
+}
+
+func (c *RPCClient) ListRegisters() (string, error) {
+	var regs string
+	err := c.call("ListRegisters", nil, &regs)
+	return regs, err
+}
+
+func (c *RPCClient) ListFunctionArgs(scope api.EvalScope) ([]api.Variable, error) {
+	var vars []api.Variable
+	err := c.call("ListFunctionArgs", scope, &vars)
+	return vars, err
+}
+
+func (c *RPCClient) ListGoroutines() ([]*api.Goroutine, error) {
+	var goroutines []*api.Goroutine
+	err := c.call("ListGoroutines", nil, &goroutines)
+	return goroutines, err
+}
+
+func (c *RPCClient) Stacktrace(goroutineId, depth int, full bool) ([]api.Stackframe, error) {
+	var locations []api.Stackframe
+	err := c.call("StacktraceGoroutine", &StacktraceGoroutineArgs{Id: goroutineId, Depth: depth, Full: full}, &locations)
+	return locations, err
+}
+
+func (c *RPCClient) AttachedToExistingProcess() bool {
+	var answer bool
+	c.call("AttachedToExistingProcess", nil, &answer)
+	return answer
+}
+
+func (c *RPCClient) FindLocation(scope api.EvalScope, loc string) ([]api.Location, error) {
+	var answer []api.Location
+	err := c.call("FindLocation", FindLocationArgs{scope, loc}, &answer)
+	return answer, err
+}
+
+// Disassemble code between startPC and endPC
+func (c *RPCClient) DisassembleRange(scope api.EvalScope, startPC, endPC uint64, flavour api.AssemblyFlavour) (api.AsmInstructions, error) {
+	var r api.AsmInstructions
+	err := c.call("Disassemble", DisassembleRequest{scope, startPC, endPC, flavour}, &r)
+	return r, err
+}
+
+// Disassemble function containing pc
+func (c *RPCClient) DisassemblePC(scope api.EvalScope, pc uint64, flavour api.AssemblyFlavour) (api.AsmInstructions, error) {
+	var r api.AsmInstructions
+	err := c.call("Disassemble", DisassembleRequest{scope, pc, 0, flavour}, &r)
+	return r, err
+}
+
+func (c *RPCClient) url(path string) string {
+	return fmt.Sprintf("http://%s%s", c.addr, path)
+}
+
+func (c *RPCClient) call(method string, args, reply interface{}) error {
+	return c.client.Call("RPCServer."+method, args, reply)
+}

vendor/github.com/derekparker/delve/service/rpc1/readme.txtr

@@ -0,0 +1,5 @@
+This package implements version 1 of Delve's API and is only
+kept here for backwards compatibility. Client.go is the old
+client code used by Delve's frontend (delve/cmd/dlv), it is
+only preserved here for the backwards compatibility tests in
+service/test/integration1_test.go.

vendor/github.com/derekparker/delve/service/rpc1/server.go

@@ -0,0 +1,318 @@
+package rpc1
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/derekparker/delve/pkg/proc"
+	"github.com/derekparker/delve/service"
+	"github.com/derekparker/delve/service/api"
+	"github.com/derekparker/delve/service/debugger"
+)
+
+var defaultLoadConfig = proc.LoadConfig{true, 1, 64, 64, -1}
+
+type RPCServer struct {
+	// config is all the information necessary to start the debugger and server.
+	config *service.Config
+	// debugger is a debugger service.
+	debugger *debugger.Debugger
+}
+
+func NewServer(config *service.Config, debugger *debugger.Debugger) *RPCServer {
+	return &RPCServer{config, debugger}
+}
+
+func (s *RPCServer) ProcessPid(arg1 interface{}, pid *int) error {
+	*pid = s.debugger.ProcessPid()
+	return nil
+}
+
+func (s *RPCServer) Detach(kill bool, ret *int) error {
+	return s.debugger.Detach(kill)
+}
+
+func (s *RPCServer) Restart(arg1 interface{}, arg2 *int) error {
+	if s.config.AttachPid != 0 {
+		return errors.New("cannot restart process Delve did not create")
+	}
+	_, err := s.debugger.Restart()
+	return err
+}
+
+func (s *RPCServer) State(arg interface{}, state *api.DebuggerState) error {
+	st, err := s.debugger.State()
+	if err != nil {
+		return err
+	}
+	*state = *st
+	return nil
+}
+
+func (s *RPCServer) Command(command *api.DebuggerCommand, cb service.RPCCallback) {
+	st, err := s.debugger.Command(command)
+	cb.Return(st, err)
+}
+
+func (s *RPCServer) GetBreakpoint(id int, breakpoint *api.Breakpoint) error {
+	bp := s.debugger.FindBreakpoint(id)
+	if bp == nil {
+		return fmt.Errorf("no breakpoint with id %d", id)
+	}
+	*breakpoint = *bp
+	return nil
+}
+
+func (s *RPCServer) GetBreakpointByName(name string, breakpoint *api.Breakpoint) error {
+	bp := s.debugger.FindBreakpointByName(name)
+	if bp == nil {
+		return fmt.Errorf("no breakpoint with name %s", name)
+	}
+	*breakpoint = *bp
+	return nil
+}
+
+type StacktraceGoroutineArgs struct {
+	Id    int
+	Depth int
+	Full  bool
+}
+
+func (s *RPCServer) StacktraceGoroutine(args *StacktraceGoroutineArgs, locations *[]api.Stackframe) error {
+	var loadcfg *proc.LoadConfig = nil
+	if args.Full {
+		loadcfg = &defaultLoadConfig
+	}
+	locs, err := s.debugger.Stacktrace(args.Id, args.Depth, loadcfg)
+	if err != nil {
+		return err
+	}
+	*locations = locs
+	return nil
+}
+
+func (s *RPCServer) ListBreakpoints(arg interface{}, breakpoints *[]*api.Breakpoint) error {
+	*breakpoints = s.debugger.Breakpoints()
+	return nil
+}
+
+func (s *RPCServer) CreateBreakpoint(bp, newBreakpoint *api.Breakpoint) error {
+	createdbp, err := s.debugger.CreateBreakpoint(bp)
+	if err != nil {
+		return err
+	}
+	*newBreakpoint = *createdbp
+	return nil
+}
+
+func (s *RPCServer) ClearBreakpoint(id int, breakpoint *api.Breakpoint) error {
+	bp := s.debugger.FindBreakpoint(id)
+	if bp == nil {
+		return fmt.Errorf("no breakpoint with id %d", id)
+	}
+	deleted, err := s.debugger.ClearBreakpoint(bp)
+	if err != nil {
+		return err
+	}
+	*breakpoint = *deleted
+	return nil
+}
+
+func (s *RPCServer) ClearBreakpointByName(name string, breakpoint *api.Breakpoint) error {
+	bp := s.debugger.FindBreakpointByName(name)
+	if bp == nil {
+		return fmt.Errorf("no breakpoint with name %s", name)
+	}
+	deleted, err := s.debugger.ClearBreakpoint(bp)
+	if err != nil {
+		return err
+	}
+	*breakpoint = *deleted
+	return nil
+}
+
+func (s *RPCServer) AmendBreakpoint(amend *api.Breakpoint, unused *int) error {
+	*unused = 0
+	return s.debugger.AmendBreakpoint(amend)
+}
+
+func (s *RPCServer) ListThreads(arg interface{}, threads *[]*api.Thread) (err error) {
+	*threads, err = s.debugger.Threads()
+	return err
+}
+
+func (s *RPCServer) GetThread(id int, thread *api.Thread) error {
+	t, err := s.debugger.FindThread(id)
+	if err != nil {
+		return err
+	}
+	if t == nil {
+		return fmt.Errorf("no thread with id %d", id)
+	}
+	*thread = *t
+	return nil
+}
+
+func (s *RPCServer) ListPackageVars(filter string, variables *[]api.Variable) error {
+	state, err := s.debugger.State()
+	if err != nil {
+		return err
+	}
+
+	current := state.CurrentThread
+	if current == nil {
+		return fmt.Errorf("no current thread")
+	}
+
+	vars, err := s.debugger.PackageVariables(current.ID, filter, defaultLoadConfig)
+	if err != nil {
+		return err
+	}
+	*variables = vars
+	return nil
+}
+
+type ThreadListArgs struct {
+	Id     int
+	Filter string
+}
+
+func (s *RPCServer) ListThreadPackageVars(args *ThreadListArgs, variables *[]api.Variable) error {
+	thread, err := s.debugger.FindThread(args.Id)
+	if err != nil {
+		return err
+	}
+	if thread == nil {
+		return fmt.Errorf("no thread with id %d", args.Id)
+	}
+
+	vars, err := s.debugger.PackageVariables(args.Id, args.Filter, defaultLoadConfig)
+	if err != nil {
+		return err
+	}
+	*variables = vars
+	return nil
+}
+
+func (s *RPCServer) ListRegisters(arg interface{}, registers *string) error {
+	state, err := s.debugger.State()
+	if err != nil {
+		return err
+	}
+
+	regs, err := s.debugger.Registers(state.CurrentThread.ID, false)
+	if err != nil {
+		return err
+	}
+	*registers = regs.String()
+	return nil
+}
+
+func (s *RPCServer) ListLocalVars(scope api.EvalScope, variables *[]api.Variable) error {
+	vars, err := s.debugger.LocalVariables(scope, defaultLoadConfig)
+	if err != nil {
+		return err
+	}
+	*variables = vars
+	return nil
+}
+
+func (s *RPCServer) ListFunctionArgs(scope api.EvalScope, variables *[]api.Variable) error {
+	vars, err := s.debugger.FunctionArguments(scope, defaultLoadConfig)
+	if err != nil {
+		return err
+	}
+	*variables = vars
+	return nil
+}
+
+type EvalSymbolArgs struct {
+	Scope  api.EvalScope
+	Symbol string
+}
+
+func (s *RPCServer) EvalSymbol(args EvalSymbolArgs, variable *api.Variable) error {
+	v, err := s.debugger.EvalVariableInScope(args.Scope, args.Symbol, defaultLoadConfig)
+	if err != nil {
+		return err
+	}
+	*variable = *v
+	return nil
+}
+
+type SetSymbolArgs struct {
+	Scope  api.EvalScope
+	Symbol string
+	Value  string
+}
+
+func (s *RPCServer) SetSymbol(args SetSymbolArgs, unused *int) error {
+	*unused = 0
+	return s.debugger.SetVariableInScope(args.Scope, args.Symbol, args.Value)
+}
+
+func (s *RPCServer) ListSources(filter string, sources *[]string) error {
+	ss, err := s.debugger.Sources(filter)
+	if err != nil {
+		return err
+	}
+	*sources = ss
+	return nil
+}
+
+func (s *RPCServer) ListFunctions(filter string, funcs *[]string) error {
+	fns, err := s.debugger.Functions(filter)
+	if err != nil {
+		return err
+	}
+	*funcs = fns
+	return nil
+}
+
+func (s *RPCServer) ListTypes(filter string, types *[]string) error {
+	tps, err := s.debugger.Types(filter)
+	if err != nil {
+		return err
+	}
+	*types = tps
+	return nil
+}
+
+func (s *RPCServer) ListGoroutines(arg interface{}, goroutines *[]*api.Goroutine) error {
+	gs, err := s.debugger.Goroutines()
+	if err != nil {
+		return err
+	}
+	*goroutines = gs
+	return nil
+}
+
+func (c *RPCServer) AttachedToExistingProcess(arg interface{}, answer *bool) error {
+	if c.config.AttachPid != 0 {
+		*answer = true
+	}
+	return nil
+}
+
+type FindLocationArgs struct {
+	Scope api.EvalScope
+	Loc   string
+}
+
+func (c *RPCServer) FindLocation(args FindLocationArgs, answer *[]api.Location) error {
+	var err error
+	*answer, err = c.debugger.FindLocation(args.Scope, args.Loc)
+	return err
+}
+
+type DisassembleRequest struct {
+	Scope          api.EvalScope
+	StartPC, EndPC uint64
+	Flavour        api.AssemblyFlavour
+}
+
+func (c *RPCServer) Disassemble(args DisassembleRequest, answer *api.AsmInstructions) error {
+	var err error
+	*answer, err = c.debugger.Disassemble(args.Scope, args.StartPC, args.EndPC, args.Flavour)
+	return err
+}