1 files changed, 25 insertions, 169 deletions
diff --git a/test/cpp/util/grpc_cli.cc b/test/cpp/util/grpc_cli.cc
index 53529da782..fe248601ee 100644
--- a/test/cpp/util/grpc_cli.cc
+++ b/test/cpp/util/grpc_cli.cc
@@ -33,12 +33,14 @@
 
 /*
   A command line tool to talk to a grpc server.
+  Run `grpc_cli help` command to see its usage information.
+
   Example of talking to grpc interop server:
   grpc_cli call localhost:50051 UnaryCall "response_size:10" \
       --protofiles=src/proto/grpc/testing/test.proto --enable_ssl=false
 
   Options:
-    1. --protofiles, use this flag to provide a proto file if the server does
+    1. --protofiles, use this flag to provide proto files if the server does
        does not have the reflection service.
     2. --proto_path, if your proto file is not under current working directory,
        use this flag to provide a search root. It should work similar to the
@@ -48,15 +50,17 @@
        --metadata="MyHeaderKey1:Value1:MyHeaderKey2:Value2"
     4. --enable_ssl, whether to use tls.
     5. --use_auth, if set to true, attach a GoogleDefaultCredentials to the call
-    6. --input_binary_file, a file containing the serialized request. The file
-       can be generated by calling something like:
+    6. --infile, input filename (defaults to stdin)
+    7. --outfile, output filename (defaults to stdout)
+    8. --binary_input, use the serialized request as input. The serialized
+       request can be generated by calling something like:
        protoc --proto_path=src/proto/grpc/testing/ \
          --encode=grpc.testing.SimpleRequest \
          src/proto/grpc/testing/messages.proto \
          < input.txt > input.bin
        If this is used and no proto file is provided in the argument list, the
        method string has to be exact in the form of /package.service/method.
-    7. --output_binary_file, a file to write binary format response into, it can
+    9. --binary_output, use binary format response as output, it can
        be later decoded using protoc:
        protoc --proto_path=src/proto/grpc/testing/ \
        --decode=grpc.testing.SimpleResponse \
@@ -64,182 +68,34 @@
        < output.bin > output.txt
 */
 
-#include <unistd.h>
 #include <fstream>
+#include <functional>
 #include <iostream>
-#include <sstream>
 
 #include <gflags/gflags.h>
-#include <grpc++/channel.h>
-#include <grpc++/create_channel.h>
-#include <grpc++/security/credentials.h>
-#include <grpc++/support/string_ref.h>
-#include <grpc/grpc.h>
-
-#include "test/cpp/util/cli_call.h"
-#include "test/cpp/util/proto_file_parser.h"
-#include "test/cpp/util/string_ref_helper.h"
+#include <grpc++/support/config.h>
+#include "test/cpp/util/cli_credentials.h"
+#include "test/cpp/util/grpc_tool.h"
 #include "test/cpp/util/test_config.h"
 
-DEFINE_bool(enable_ssl, true, "Whether to use ssl/tls.");
-DEFINE_bool(use_auth, false, "Whether to create default google credentials.");
-DEFINE_string(input_binary_file, "",
-              "Path to input file containing serialized request.");
-DEFINE_string(output_binary_file, "",
-              "Path to output file to write serialized response.");
-DEFINE_string(metadata, "",
-              "Metadata to send to server, in the form of key1:val1:key2:val2");
-DEFINE_string(proto_path, ".", "Path to look for the proto file.");
-// TODO(zyc): support a list of input proto files
-DEFINE_string(protofiles, "", "Name of the proto file.");
-
-void ParseMetadataFlag(
-    std::multimap<grpc::string, grpc::string>* client_metadata) {
-  if (FLAGS_metadata.empty()) {
-    return;
-  }
-  std::vector<grpc::string> fields;
-  const char* delim = ":";
-  size_t cur, next = -1;
-  do {
-    cur = next + 1;
-    next = FLAGS_metadata.find_first_of(delim, cur);
-    fields.push_back(FLAGS_metadata.substr(cur, next - cur));
-  } while (next != grpc::string::npos);
-  if (fields.size() % 2) {
-    std::cout << "Failed to parse metadata flag" << std::endl;
-    exit(1);
-  }
-  for (size_t i = 0; i < fields.size(); i += 2) {
-    client_metadata->insert(
-        std::pair<grpc::string, grpc::string>(fields[i], fields[i + 1]));
-  }
-}
+DEFINE_string(outfile, "", "Output file (default is stdout)");
 
-template <typename T>
-void PrintMetadata(const T& m, const grpc::string& message) {
-  if (m.empty()) {
-    return;
-  }
-  std::cout << message << std::endl;
-  grpc::string pair;
-  for (typename T::const_iterator iter = m.begin(); iter != m.end(); ++iter) {
-    pair.clear();
-    pair.append(iter->first.data(), iter->first.size());
-    pair.append(" : ");
-    pair.append(iter->second.data(), iter->second.size());
-    std::cout << pair << std::endl;
+static bool SimplePrint(const grpc::string& outfile,
+                        const grpc::string& output) {
+  if (outfile.empty()) {
+    std::cout << output;
+  } else {
+    std::ofstream output_file(outfile, std::ios::trunc | std::ios::binary);
+    output_file << output;
+    output_file.close();
   }
+  return true;
 }
 
 int main(int argc, char** argv) {
   grpc::testing::InitTest(&argc, &argv, true);
 
-  if (argc < 4 || grpc::string(argv[1]) != "call") {
-    std::cout << "Usage: grpc_cli call server_host:port method_name "
-              << "[proto file] [text format request] [<options>]" << std::endl;
-    return 1;
-  }
-
-  grpc::string request_text;
-  grpc::string server_address(argv[2]);
-  grpc::string method_name(argv[3]);
-  std::unique_ptr<grpc::testing::ProtoFileParser> parser;
-  grpc::string serialized_request_proto;
-
-  if (argc == 5) {
-    request_text = argv[4];
-  }
-
-  std::shared_ptr<grpc::ChannelCredentials> creds;
-  if (!FLAGS_enable_ssl) {
-    creds = grpc::InsecureChannelCredentials();
-  } else {
-    if (FLAGS_use_auth) {
-      creds = grpc::GoogleDefaultCredentials();
-    } else {
-      creds = grpc::SslCredentials(grpc::SslCredentialsOptions());
-    }
-  }
-  std::shared_ptr<grpc::Channel> channel =
-      grpc::CreateChannel(server_address, creds);
-
-  if (request_text.empty() && FLAGS_input_binary_file.empty()) {
-    if (isatty(STDIN_FILENO)) {
-      std::cout << "reading request message from stdin..." << std::endl;
-    }
-    std::stringstream input_stream;
-    input_stream << std::cin.rdbuf();
-    request_text = input_stream.str();
-  }
-
-  if (!request_text.empty()) {
-    if (!FLAGS_protofiles.empty()) {
-      parser.reset(new grpc::testing::ProtoFileParser(
-          FLAGS_proto_path, FLAGS_protofiles, method_name));
-    } else {
-      parser.reset(new grpc::testing::ProtoFileParser(channel, method_name));
-    }
-    method_name = parser->GetFullMethodName();
-    if (parser->HasError()) {
-      return 1;
-    }
-
-    if (!FLAGS_input_binary_file.empty()) {
-      std::cout
-          << "warning: request given in argv, ignoring --input_binary_file"
-          << std::endl;
-    }
-  }
-
-  if (parser) {
-    serialized_request_proto =
-        parser->GetSerializedProto(request_text, true /* is_request */);
-    if (parser->HasError()) {
-      return 1;
-    }
-  } else if (!FLAGS_input_binary_file.empty()) {
-    std::ifstream input_file(FLAGS_input_binary_file,
-                             std::ios::in | std::ios::binary);
-    std::stringstream input_stream;
-    input_stream << input_file.rdbuf();
-    serialized_request_proto = input_stream.str();
-  }
-  std::cout << "connecting to " << server_address << std::endl;
-
-  grpc::string serialized_response_proto;
-  std::multimap<grpc::string, grpc::string> client_metadata;
-  std::multimap<grpc::string_ref, grpc::string_ref> server_initial_metadata,
-      server_trailing_metadata;
-  ParseMetadataFlag(&client_metadata);
-  PrintMetadata(client_metadata, "Sending client initial metadata:");
-  grpc::Status s = grpc::testing::CliCall::Call(
-      channel, method_name, serialized_request_proto,
-      &serialized_response_proto, client_metadata, &server_initial_metadata,
-      &server_trailing_metadata);
-  PrintMetadata(server_initial_metadata,
-                "Received initial metadata from server:");
-  PrintMetadata(server_trailing_metadata,
-                "Received trailing metadata from server:");
-  if (s.ok()) {
-    std::cout << "Rpc succeeded with OK status" << std::endl;
-    if (parser) {
-      grpc::string response_text = parser->GetTextFormat(
-          serialized_response_proto, false /* is_request */);
-      if (parser->HasError()) {
-        return 1;
-      }
-      std::cout << "Response: \n " << response_text << std::endl;
-    }
-    if (!FLAGS_output_binary_file.empty()) {
-      std::ofstream output_file(FLAGS_output_binary_file,
-                                std::ios::trunc | std::ios::binary);
-      output_file << serialized_response_proto;
-    }
-  } else {
-    std::cout << "Rpc failed with status code " << s.error_code()
-              << ", error message: " << s.error_message() << std::endl;
-  }
-
-  return 0;
+  return grpc::testing::GrpcToolMainLib(
+      argc, (const char**)argv, grpc::testing::CliCredentials(),
+      std::bind(SimplePrint, FLAGS_outfile, std::placeholders::_1));
 }