Add an OpenTelemetry gRPC access logger (just gRPC handling) (#14818)

Signed-off-by: Itamar Kaminski <itamark@google.com>

Mirrored from https://github.com/envoyproxy/envoy @ 684afd142a41fc3bf9838a2a9c955879c00547c1

bazel/repositories.bzl

@@ -40,6 +40,10 @@ def api_dependencies():
         name = "com_github_openzipkin_zipkinapi",
         build_file_content = ZIPKINAPI_BUILD_CONTENT,
     )
+    external_http_archive(
+        name = "opentelemetry_proto",
+        build_file_content = OPENTELEMETRY_LOGS_BUILD_CONTENT,
+    )
 
 PROMETHEUSMETRICS_BUILD_CONTENT = """
 load("@envoy_api//bazel:api_build_system.bzl", "api_cc_py_proto_library")
@@ -101,3 +105,25 @@ go_proto_library(
     visibility = ["//visibility:public"],
 )
 """
+
+OPENTELEMETRY_LOGS_BUILD_CONTENT = """
+load("@rules_proto//proto:defs.bzl", "proto_library")
+load("@rules_cc//cc:defs.bzl", "cc_proto_library")
+
+proto_library(
+    name = "logs",
+    srcs = [
+        "opentelemetry/proto/collector/logs/v1/logs_service.proto",
+        "opentelemetry/proto/common/v1/common.proto",
+        "opentelemetry/proto/logs/v1/logs.proto",
+        "opentelemetry/proto/resource/v1/resource.proto",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+cc_proto_library(
+    name = "logs_cc_proto",
+    deps = [":logs"],
+    visibility = ["//visibility:public"],
+)
+"""

bazel/repository_locations.bzl

@@ -96,4 +96,15 @@ REPOSITORY_LOCATIONS_SPEC = dict(
         release_date = "2020-08-17",
         use_category = ["api"],
     ),
+    opentelemetry_proto = dict(
+        project_name = "OpenTelemetry Proto",
+        project_desc = "Language Independent Interface Types For OpenTelemetry",
+        project_url = "https://github.com/open-telemetry/opentelemetry-proto",
+        version = "0.7.0",
+        sha256 = "39cc1fb45039c7687354ca497aff8a55c71d0f1e484f6b81124ba9d821c36441",
+        strip_prefix = "opentelemetry-proto-{version}",
+        urls = ["https://github.com/open-telemetry/opentelemetry-proto/archive/v{version}.tar.gz"],
+        release_date = "2020-12-09",
+        use_category = ["api"],
+    ),
 )