Replace making protoc and plugins with bazel build

Fixed templates and plugin-tests

src/objective-c/!ProtoCompiler-gRPCCppPlugin.podspec

@@ -94,6 +94,7 @@ Pod::Spec.new do |s|
   }
 
   repo_root = '../..'
+  bazel = "#{repo_root}/tools/bazel"
   plugin = 'grpc_cpp_plugin'
 
   s.preserve_paths = plugin
@@ -111,15 +112,6 @@ Pod::Spec.new do |s|
   # present in this pod's directory. We use that knowledge to check for the existence of the file
   # and, if absent, compile the plugin from the local sources.
   s.prepare_command = <<-CMD
-    if [ ! -f #{plugin} ]; then
-      cd #{repo_root}
-      # This will build the plugin and put it in #{repo_root}/bins/opt.
-      #
-      # TODO(jcanizales): I reckon make will try to use locally-installed libprotoc (headers and
-      # library binary) if found, which _we do not want_. Find a way for this to always use the
-      # sources in the repo.
-      make #{plugin}
-      cd -
-    fi
+    #{bazel} build //src/compiler:grpc_cpp_plugin
   CMD
 end

src/objective-c/!ProtoCompiler-gRPCPlugin.podspec

@@ -96,6 +96,7 @@ Pod::Spec.new do |s|
   }
 
   repo_root = '../..'
+  bazel = "#{repo_root}/tools/bazel"
   plugin = 'grpc_objective_c_plugin'
 
   s.preserve_paths = plugin
@@ -115,15 +116,6 @@ Pod::Spec.new do |s|
   # present in this pod's directory. We use that knowledge to check for the existence of the file
   # and, if absent, compile the plugin from the local sources.
   s.prepare_command = <<-CMD
-    if [ ! -f #{plugin} ]; then
-      cd #{repo_root}
-      # This will build the plugin and put it in #{repo_root}/bins/opt.
-      #
-      # TODO(jcanizales): I reckon make will try to use locally-installed libprotoc (headers and
-      # library binary) if found, which _we do not want_. Find a way for this to always use the
-      # sources in the repo.
-      make #{plugin}
-      cd -
-    fi
+    #{bazel} build //src/compiler:grpc_objective_c_plugin
   CMD
 end

src/objective-c/!ProtoCompiler.podspec

@@ -120,20 +120,9 @@ Pod::Spec.new do |s|
   # present in this pod's directory. We use that knowledge to check for the existence of the file
   # and, if absent, build it from the local sources.
   repo_root = '../..'
-  plugin = 'grpc_objective_c_plugin'
+  bazel = "#{repo_root}/tools/bazel"
+  
   s.prepare_command = <<-CMD
-    if [ ! -f bin/protoc ]; then
-      cd #{repo_root}
-      # This will build protoc from the Protobuf submodule of gRPC, and put it in
-      # #{repo_root}/bins/opt/protobuf.
-      #
-      # TODO(jcanizales): Make won't build protoc from sources if one's locally installed, which
-      # _we do not want_. Find a way for this to always build from source.
-      make #{plugin}
-      cd -
-    else
-      mv bin/protoc .
-      mv include/google .
-    fi
+    #{bazel} build @com_google_protobuf//:protoc
   CMD
 end

src/objective-c/examples/RemoteTestClient/RemoteTest.podspec

@@ -16,11 +16,11 @@ Pod::Spec.new do |s|
   s.dependency "!ProtoCompiler-gRPCPlugin"
 
   repo_root = '../../../..'
-  bin_dir = "#{repo_root}/bins/$CONFIG"
+  bazel_exec_root = "#{repo_root}/bazel-out/darwin-fastbuild/bin"
 
-  protoc = "#{bin_dir}/protobuf/protoc"
+  protoc = "#{bazel_exec_root}/external/com_google_protobuf/protoc"
   well_known_types_dir = "#{repo_root}/third_party/protobuf/src"
-  plugin = "#{bin_dir}/grpc_objective_c_plugin"
+  plugin = "#{bazel_exec_root}/src/compiler/grpc_objective_c_plugin"
 
   # Since we switched to importing full path, -I needs to be set to the directory
   # from which the imported file can be found, which is the grpc's root here

src/objective-c/tests/RemoteTestClient/RemoteTest.podspec

@@ -16,15 +16,13 @@ Pod::Spec.new do |s|
   s.dependency "!ProtoCompiler-gRPCPlugin"
 
   repo_root = '../../../..'
-  config = ENV['CONFIG'] || 'opt'
-  bin_dir = "#{repo_root}/bins/#{config}"
+  bazel_exec_root = "#{repo_root}/bazel-out/darwin-fastbuild/bin"
 
-  protoc = "#{bin_dir}/protobuf/protoc"
+  protoc = "#{bazel_exec_root}/external/com_google_protobuf/protoc"
   well_known_types_dir = "#{repo_root}/third_party/protobuf/src"
-  plugin = "#{bin_dir}/grpc_objective_c_plugin"
+  plugin = "#{bazel_exec_root}/src/compiler/grpc_objective_c_plugin"
 
   s.prepare_command = <<-CMD
-    if [ -f #{protoc} ]; then
     #{protoc} \
         --plugin=protoc-gen-grpc=#{plugin} \
         --objc_out=. \
@@ -32,18 +30,6 @@ Pod::Spec.new do |s|
         -I #{repo_root} \
         -I #{well_known_types_dir} \
         #{repo_root}/src/objective-c/tests/RemoteTestClient/*.proto
-    else
-      # protoc was not found bin_dir, use installed version instead
-      (>&2 echo "\nWARNING: Using installed version of protoc. It might be incompatible with gRPC")
-
-      protoc \
-          --plugin=protoc-gen-grpc=#{plugin} \
-          --objc_out=. \
-          --grpc_out=. \
-          -I #{repo_root} \
-          -I #{well_known_types_dir} \
-          #{repo_root}/src/objective-c/tests/RemoteTestClient/*.proto
-    fi
   CMD
 
   s.subspec "Messages" do |ms|

src/objective-c/tests/run_plugin_tests.sh

@@ -22,9 +22,15 @@ cd $(dirname $0)
 
 # Run the tests server.
 
-BINDIR=../../../bins/$CONFIG
-PROTOC=$BINDIR/protobuf/protoc
-PLUGIN=$BINDIR/grpc_objective_c_plugin
+ROOT_DIR=../../..
+BAZEL=$ROOT_DIR/tools/bazel
+BAZEL_EXEC_ROOT=$ROOT_DIR/bazel-out/darwin-fastbuild/bin
+PROTOC=$BAZEL_EXEC_ROOT/external/com_google_protobuf/protoc
+PLUGIN=$BAZEL_EXEC_ROOT/src/compiler/grpc_objective_c_plugin
+
+[ -f $PROTOC ] && [ -f $PLUGIN ] || {
+    BAZEL build @com_google_protobuf//:protoc //src/compiler:grpc_objective_c_plugin
+}
 
 rm -rf PluginTest/*pb*
 

templates/src/objective-c/!ProtoCompiler-gRPCCppPlugin.podspec.template

@@ -96,6 +96,7 @@
     }
 
     repo_root = '../..'
+    bazel = "#{repo_root}/tools/bazel"
     plugin = 'grpc_cpp_plugin'
 
     s.preserve_paths = plugin
@@ -113,15 +114,6 @@
     # present in this pod's directory. We use that knowledge to check for the existence of the file
     # and, if absent, compile the plugin from the local sources.
     s.prepare_command = <<-CMD
-      if [ ! -f #{plugin} ]; then
-        cd #{repo_root}
-        # This will build the plugin and put it in #{repo_root}/bins/opt.
-        #
-        # TODO(jcanizales): I reckon make will try to use locally-installed libprotoc (headers and
-        # library binary) if found, which _we do not want_. Find a way for this to always use the
-        # sources in the repo.
-        make #{plugin}
-        cd -
-      fi
+      #{bazel} build //src/compiler:grpc_cpp_plugin
     CMD
   end

templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template

@@ -98,6 +98,7 @@
     }
 
     repo_root = '../..'
+    bazel = "#{repo_root}/tools/bazel"
     plugin = 'grpc_objective_c_plugin'
 
     s.preserve_paths = plugin
@@ -117,15 +118,6 @@
     # present in this pod's directory. We use that knowledge to check for the existence of the file
     # and, if absent, compile the plugin from the local sources.
     s.prepare_command = <<-CMD
-      if [ ! -f #{plugin} ]; then
-        cd #{repo_root}
-        # This will build the plugin and put it in #{repo_root}/bins/opt.
-        #
-        # TODO(jcanizales): I reckon make will try to use locally-installed libprotoc (headers and
-        # library binary) if found, which _we do not want_. Find a way for this to always use the
-        # sources in the repo.
-        make #{plugin}
-        cd -
-      fi
+      #{bazel} build //src/compiler:grpc_objective_c_plugin
     CMD
   end

test/cpp/ios/RemoteTestClientCpp/RemoteTestCpp.podspec

@@ -15,26 +15,23 @@ Pod::Spec.new do |s|
   s.dependency "Protobuf-C++"
   s.dependency "gRPC-C++"
   s.source_files = "src/proto/grpc/testing/*.pb.{h,cc}"
-  s.header_mappings_dir = "RemoteTestCpp"
+  s.header_mappings_dir = "."
   s.requires_arc = false
 
   repo_root = '../../../..'
-  config = ENV['CONFIG'] || 'opt'
-  bin_dir = "#{repo_root}/bins/#{config}"
+  bazel_exec_root = "#{repo_root}/bazel-out/darwin-fastbuild/bin"
 
-  protoc = "#{bin_dir}/protobuf/protoc"
+  protoc = "#{bazel_exec_root}/external/com_google_protobuf/protoc"
   well_known_types_dir = "#{repo_root}/third_party/protobuf/src"
-  plugin = "#{bin_dir}/grpc_cpp_plugin"
+  plugin = "#{bazel_exec_root}/src/compiler/grpc_cpp_plugin"
   proto_dir = "#{repo_root}/src/proto/grpc/testing"
 
   s.prepare_command = <<-CMD
-    if [ -f #{protoc} ]; then
     #{protoc} \
         --plugin=protoc-gen-grpc=#{plugin} \
         --cpp_out=. \
         --grpc_out=. \
         -I #{repo_root} \
-          -I #{proto_dir} \
         -I #{well_known_types_dir} \
         #{proto_dir}/echo.proto
     #{protoc} \
@@ -42,7 +39,6 @@ Pod::Spec.new do |s|
         --cpp_out=. \
         --grpc_out=. \
         -I #{repo_root} \
-          -I #{proto_dir} \
         -I #{well_known_types_dir} \
         #{proto_dir}/echo_messages.proto
     #{protoc} \
@@ -50,43 +46,8 @@ Pod::Spec.new do |s|
         --cpp_out=. \
         --grpc_out=. \
         -I #{repo_root} \
-          -I #{proto_dir} \
         -I #{well_known_types_dir} \
         #{proto_dir}/simple_messages.proto
-    else
-      # protoc was not found bin_dir, use installed version instead
-
-      if ! [ -x "$(command -v protoc)" ]; then
-        (>&2 echo "\nERROR: protoc not found")
-        exit 1
-      fi
-      (>&2 echo "\nWARNING: Using installed version of protoc. It might be incompatible with gRPC")
-
-      protoc \
-          --plugin=protoc-gen-grpc=#{plugin} \
-          --cpp_out=. \
-          --grpc_out=. \
-          -I #{repo_root} \
-          -I #{proto_dir} \
-          -I #{well_known_types_dir} \
-          #{proto_dir}/echo.proto
-      protoc \
-          --plugin=protoc-gen-grpc=#{plugin} \
-          --cpp_out=. \
-          --grpc_out=. \
-          -I #{repo_root} \
-          -I #{proto_dir} \
-          -I #{well_known_types_dir} \
-          #{proto_dir}/echo_messages.proto
-      protoc \
-          --plugin=protoc-gen-grpc=#{plugin} \
-          --cpp_out=. \
-          --grpc_out=. \
-          -I #{repo_root} \
-          -I #{proto_dir} \
-          -I #{well_known_types_dir} \
-          #{proto_dir}/simple_messages.proto
-    fi
   CMD
 
   s.pod_target_xcconfig = {