Generate all file lists and build target lists in binding.gyp from build.yaml

binding.gyp

@@ -346,11 +346,12 @@
         "src/node/ext/node_grpc.cc",
         "src/node/ext/server.cc",
         "src/node/ext/server_credentials.cc",
-        "src/node/ext/timeval.cc"
+        "src/node/ext/timeval.cc",
       ],
       "dependencies": [
-        "grpc"
+        "grpc",
+        "gpr",
       ]
-    }
+    },
   ]
 }

build.yaml

@@ -2232,3 +2232,19 @@ vspackages:
   props: false
   redist: false
   version: 1.7.0.1
+node_modules:
+- deps:
+  - grpc
+  - gpr
+  name: grpc_node
+  src:
+  - src/node/ext/byte_buffer.cc
+  - src/node/ext/call.cc
+  - src/node/ext/call_credentials.cc
+  - src/node/ext/channel.cc
+  - src/node/ext/channel_credentials.cc
+  - src/node/ext/completion_queue_async_worker.cc
+  - src/node/ext/node_grpc.cc
+  - src/node/ext/server.cc
+  - src/node/ext/server_credentials.cc
+  - src/node/ext/timeval.cc

templates/binding.gyp.template

@@ -89,8 +89,9 @@
       ]
     },
     'targets': [
+      % for module in node_modules:
       % for lib in libs:
-      % if lib.name == 'gpr' or lib.name == 'grpc':
+      % if lib.name in module.transitive_deps:
       {
         'target_name': '${lib.name}',
         'product_prefix': 'lib',
@@ -142,22 +143,18 @@
             }
           }]
         ],
-        "target_name": "grpc_node",
+        "target_name": "${module.name}",
         "sources": [
-          "src/node/ext/byte_buffer.cc",
-          "src/node/ext/call.cc",
-          "src/node/ext/call_credentials.cc",
-          "src/node/ext/channel.cc",
-          "src/node/ext/channel_credentials.cc",
-          "src/node/ext/completion_queue_async_worker.cc",
-          "src/node/ext/node_grpc.cc",
-          "src/node/ext/server.cc",
-          "src/node/ext/server_credentials.cc",
-          "src/node/ext/timeval.cc"
+          % for source in module.src:
+          "${source}",
+          % endfor
         ],
         "dependencies": [
-          "grpc"
+          % for dep in getattr(module, 'deps', []):
+          "${dep}",
+          % endfor
         ]
-      }
+      },
+      % endfor
     ]
   }

tools/buildgen/plugins/transitive_dependencies.py

+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Buildgen transitive dependencies
+
+This takes the list of libs, node_modules, and targets from our
+yaml dictionary, and adds to each the transitive closure
+of the list of dependencies.
+
+"""
+
+def get_lib(libs, name):
+  return next(lib for lib in libs if lib['name']==name)
+
+def transitive_deps(lib, libs):
+  if 'deps' in lib:
+    # Recursively call transitive_deps on each dependency, and take the union
+    return set.union(set(lib['deps']),
+                     *[set(transitive_deps(get_lib(libs, dep), libs))
+                       for dep in lib['deps']])
+  else:
+    return set()
+
+def mako_plugin(dictionary):
+  """The exported plugin code for transitive_dependencies.
+
+  Each item in libs, node_modules, and targets can have a deps list.
+  We add a transitive_deps property to each with the transitive closure
+  of those dependency lists.
+  """
+  libs = dictionary.get('libs')
+  node_modules = dictionary.get('node_modules')
+  targets = dictionary.get('targets')
+
+  for target_list in (libs, node_modules, targets):
+    for target in target_list:
+      target['transitive_deps'] = transitive_deps(target, libs)