Fix protobuf dependency. (#122)

While there, update protobuf to v3.17.3.

Signed-off-by: Piotr Sikora <piotrsikora@google.com>

Author: PiotrSikora

BUILD

@@ -1,3 +1,6 @@
+load("@rules_cc//cc:defs.bzl", "cc_library", "cc_proto_library")
+load("@rules_proto//proto:defs.bzl", "proto_library")
+
 licenses(["notice"])  # Apache 2
 
 package(default_visibility = ["//visibility:public"])
@@ -12,6 +15,7 @@ cc_library(
     ],
     deps = [
         ":common_lib",
+        "@com_google_protobuf//:protobuf_lite",
     ],
 )
 
@@ -63,7 +67,7 @@ cc_library(
     deps = [
         ":proxy_wasm_intrinsics",
         ":proxy_wasm_intrinsics_lite_cc_proto",
-        "@com_google_protobuf//:protobuf",
+        "@com_google_protobuf//:protobuf_lite",
     ],
 )
 

bazel/dep/deps.bzl

@@ -27,31 +27,11 @@ def wasm_dependencies():
         sha256 = "ce7a5c76e8b425aca874cea329fd9ac44b203b777053453b6a37b4496c5ce34f"
     )
 
-    # required by com_google_protobuf
-    _http_archive(
-        name = "bazel_skylib",
-        sha256 = "97e70364e9249702246c0e9444bccdc4b847bed1eb03c5a3ece4f83dfe6abc44",
-        urls = [
-            "https://mirror.bazel.build/github.com/bazelbuild/bazel-skylib/releases/download/1.0.2/bazel-skylib-1.0.2.tar.gz",
-            "https://github.com/bazelbuild/bazel-skylib/releases/download/1.0.2/bazel-skylib-1.0.2.tar.gz",
-        ],
-    )
-
-    _http_archive(
-        name = "rules_proto",
-        sha256 = "9fc210a34f0f9e7cc31598d109b5d069ef44911a82f507d5a88716db171615a8",
-        strip_prefix = "rules_proto-f7a30f6f80006b591fa7c437fe5a951eb10bcbcf",
-        urls = [
-            "https://mirror.bazel.build/github.com/bazelbuild/rules_proto/archive/f7a30f6f80006b591fa7c437fe5a951eb10bcbcf.tar.gz",
-            "https://github.com/bazelbuild/rules_proto/archive/f7a30f6f80006b591fa7c437fe5a951eb10bcbcf.tar.gz",
-        ],
-    )
-
     _http_archive(
         name = "com_google_protobuf",
-        sha256 = "6dd0f6b20094910fbb7f1f7908688df01af2d4f6c5c21331b9f636048674aebf",
-        strip_prefix = "protobuf-3.14.0",
-        url = "https://github.com/protocolbuffers/protobuf/releases/download/v3.14.0/protobuf-all-3.14.0.tar.gz",
+        sha256 = "77ad26d3f65222fd96ccc18b055632b0bfedf295cb748b712a98ba1ac0b704b2",
+        strip_prefix = "protobuf-3.17.3",
+        url = "https://github.com/protocolbuffers/protobuf/releases/download/v3.17.3/protobuf-all-3.17.3.tar.gz",
     )
 
 def _http_archive(name, **kwargs):

bazel/dep/deps_extra.bzl

@@ -12,11 +12,8 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 
-load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
-load("@rules_proto//proto:repositories.bzl", "rules_proto_dependencies", "rules_proto_toolchains")
+load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
 
 # Wasm deps that rely on a first stage of dependency loading in wasm_dependencies().
 def wasm_dependencies_extra():
-    bazel_skylib_workspace()
-    rules_proto_dependencies()
-    rules_proto_toolchains()
+    protobuf_deps()

proxy_wasm_api.h

@@ -21,6 +21,10 @@
 // NOLINT(namespace-envoy)
 #pragma once
 
+#ifdef PROXY_WASM_PROTOBUF
+#include "google/protobuf/message_lite.h"
+#endif
+
 #include <cstring>
 #include <functional>
 #include <memory>