Package com.google.devtools.clouddebugger.v2

Class Controller2Grpc.Controller2Stub

  • Enclosing class:
    Controller2Grpc
    public static final class Controller2Grpc.Controller2Stub
extends io.grpc.stub.AbstractAsyncStub<Controller2Grpc.Controller2Stub>
    A stub to allow clients to do asynchronous rpc calls to service Controller2. 
     The Controller service provides the API for orchestrating a collection of
 debugger agents to perform debugging tasks. These agents are each attached
 to a process of an application which may include one or more replicas.
 The debugger agents register with the Controller to identify the application
 being debugged, the Debuggee. All agents that register with the same data,
 represent the same Debuggee, and are assigned the same `debuggee_id`.
 The debugger agents call the Controller to retrieve  the list of active
 Breakpoints. Agents with the same `debuggee_id` get the same breakpoints
 list. An agent that can fulfill the breakpoint request updates the
 Controller with the breakpoint result. The controller selects the first
 result received and discards the rest of the results.
 Agents that poll again for active breakpoints will no longer have
 the completed breakpoint in the list and should remove that breakpoint from
 their attached process.
 The Controller service does not provide a way to retrieve the results of
 a completed breakpoint. This functionality is available using the Debugger
 service.

    • Method Detail

      • registerDebuggee

        public void registerDebuggee​(RegisterDebuggeeRequest request,
                             io.grpc.stub.StreamObserver<RegisterDebuggeeResponse> responseObserver)
         Registers the debuggee with the controller service.
 All agents attached to the same application must call this method with
 exactly the same request content to get back the same stable `debuggee_id`.
 Agents should call this method again whenever `google.rpc.Code.NOT_FOUND`
 is returned from any controller method.
 This protocol allows the controller service to disable debuggees, recover
 from data loss, or change the `debuggee_id` format. Agents must handle
 `debuggee_id` value changing upon re-registration.

      • listActiveBreakpoints

        public void listActiveBreakpoints​(ListActiveBreakpointsRequest request,
                                  io.grpc.stub.StreamObserver<ListActiveBreakpointsResponse> responseObserver)
         Returns the list of all active breakpoints for the debuggee.
 The breakpoint specification (`location`, `condition`, and `expressions`
 fields) is semantically immutable, although the field values may
 change. For example, an agent may update the location line number
 to reflect the actual line where the breakpoint was set, but this
 doesn't change the breakpoint semantics.
 This means that an agent does not need to check if a breakpoint has changed
 when it encounters the same breakpoint on a successive call.
 Moreover, an agent should remember the breakpoints that are completed
 until the controller removes them from the active list to avoid
 setting those breakpoints again.

      • updateActiveBreakpoint

        public void updateActiveBreakpoint​(UpdateActiveBreakpointRequest request,
                                   io.grpc.stub.StreamObserver<UpdateActiveBreakpointResponse> responseObserver)
         Updates the breakpoint state or mutable fields.
 The entire Breakpoint message must be sent back to the controller service.
 Updates to active breakpoint fields are only allowed if the new value
 does not change the breakpoint specification. Updates to the `location`,
 `condition` and `expressions` fields should not alter the breakpoint
 semantics. These may only make changes such as canonicalizing a value
 or snapping the location to the correct line of code.