grpc-swift/Packages/gRPC/Sources/Client.swift

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#if SWIFT_PACKAGE
  import CgRPC
#endif

/// A gRPC Client
public class Client {

  /// Pointer to underlying C representation
  var c: UnsafeMutableRawPointer!

  /// Completion queue for client call operations
  public var completionQueue: CompletionQueue

  /// Initializes a gRPC client
  ///
  /// - Parameter address: the address of the server to be called
  public init(address: String) {
    c = cgrpc_client_create(address)
    completionQueue = CompletionQueue(cq:cgrpc_client_completion_queue(c))
    completionQueue.name = "Client" // only for debugging
    self.completionQueue.run() {} // start a loop that watches the client's completion queue
  }

  deinit {
    cgrpc_client_destroy(c)
  }

  /// Constructs a Call object to make a gRPC API call
  ///
  /// - Parameter host: the gRPC host name for the call
  /// - Parameter method: the gRPC method name for the call
  /// - Parameter timeout: a timeout value in seconds
  /// - Returns: a Call object that can be used to perform the request
  public func createCall(host:String, method:String, timeout:Double) -> Call {
    let call = cgrpc_client_create_call(c, method, host, timeout)!
    return Call(call:call, owned:true, completionQueue:self.completionQueue)
  }
}