[1/3] Bump grpc to 1.33.1 to fix corruption when downloading CAS blobs

Part 1: add v1.33.1 version to third_party/grpc
Note: partly switches to v1.33.1 too as not all bits are versioned and
      some of unversioned bits are used from other third_party targets

grpc-java versions 1.27 through 1.32 had a bug where messages could arrive
after the call was reported clsoed.  In the case of bazel, this meant that
in GrpcCacheClient, onNext could be called after onError.  This leads to
offset bookkeeping getting out of sync, and corrupts the CAS blob download.

bazelbuild#12927

third_party/grpc/BUILD

@@ -18,7 +18,7 @@ load("//tools/distributions:distribution_rules.bzl", "distrib_java_import", "dis
 
 licenses(["notice"])  # Apache v2
 
-exports_files(["grpc_1.32.0.patch"])
+exports_files(["grpc_1.32.0.patch", "grpc_1.33.1.patch"])
 
 package(default_visibility = ["//visibility:public"])
 
@@ -32,14 +32,14 @@ filegroup(
 distrib_jar_filegroup(
     name = "bootstrap-grpc-jars",
     srcs = [
-        "grpc-api-1.32.2.jar",
-        "grpc-auth-1.32.2.jar",
-        "grpc-context-1.32.2.jar",
-        "grpc-core-1.32.2.jar",
-        "grpc-netty-1.32.2.jar",
-        "grpc-protobuf-1.32.2.jar",
-        "grpc-protobuf-lite-1.32.2.jar",
-        "grpc-stub-1.32.2.jar",
+        "grpc-api-1.33.1.jar",
+        "grpc-auth-1.33.1.jar",
+        "grpc-context-1.33.1.jar",
+        "grpc-core-1.33.1.jar",
+        "grpc-netty-1.33.1.jar",
+        "grpc-protobuf-1.33.1.jar",
+        "grpc-protobuf-lite-1.33.1.jar",
+        "grpc-stub-1.33.1.jar",
     ],
     enable_distributions = ["debian"],
 )

third_party/grpc/README.bazel.md

@@ -1,30 +1,30 @@
 # How to update the C++ sources of gRPC:
 
 1. Update the gRPC definitions in WORKSPACE file, currently we use 
-   https://github.com/grpc/grpc/archive/v1.32.2.tar.gz
+   https://github.com/grpc/grpc/archive/v1.33.1.tar.gz
 2. Update the gRPC patch file if necessary, it mostly helps avoid unnecessary dependencies.
 3. Update third_party/grpc/BUILD to redirect targets to @com_github_grpc_grpc if necessary.
 
 # How to update the BUILD/bzl sources of gRPC:
 
 1. `git clone http://github.com/grpc/grpc.git` in a convenient directory
-2. `git checkout <tag>` (current is `v1.32.0`, commithash `414bb8322d`)
+2. `git checkout <tag>` (current is `v1.33.1`, commithash `054ff69350`)
 3. `mkdir -p third_party/grpc/bazel`
 4. `cp <gRPC git tree>/bazel/{BUILD,cc_grpc_library.bzl,generate_cc.bzl,protobuf.bzl} third_party/grpc/bazel`
 5. In the `third_party/grpc` directory, apply local patches:
-   `patch -p3 < bazel_1.32.0.patch`
+   `patch -p3 < bazel_1.33.1.patch`
 
 # How to update the Java plugin:
 
-1. Checkout tag `v1.32.2` from https://github.com/grpc/grpc-java
+1. Checkout tag `v1.33.1` from https://github.com/grpc/grpc-java
 2. `cp -R <grpc-java git tree>/compiler/src/java_plugin third_party/grpc/compiler/src`
 
 # How to update the Java code:
 
-Download the necessary jars at version `1.32.2` from maven central.
+Download the necessary jars at version `1.33.1` from maven central.
 
 # Submitting the change needs 3 pull requests
 
 1. Update third_party/grpc to include files from new version
-2. Switch WORKSPACE, scripts/bootstrap/compile.sh and any other references to new version
+2. Switch distdir_deps.bzl, scripts/bootstrap/compile.sh and any other references to new version
 3. Remove older version from third_party/grpc

third_party/grpc/compiler/src/java_plugin/cpp/java_generator.h

@@ -38,13 +38,13 @@ class LogHelper {
   }
 };
 
-// Abort the program after logging the mesage if the given condition is not
+// Abort the program after logging the message if the given condition is not
 // true. Otherwise, do nothing.
 #define GRPC_CODEGEN_CHECK(x) !(x) && LogHelper(&std::cerr).get_os() \
                              << "CHECK FAILED: " << __FILE__ << ":" \
                              << __LINE__ << ": "
 
-// Abort the program after logging the mesage.
+// Abort the program after logging the message.
 #define GRPC_CODEGEN_FAIL GRPC_CODEGEN_CHECK(false)
 
 namespace java_grpc_generator {

third_party/grpc/grpc_1.33.1.patch

@@ -0,0 +1,122 @@
+commit bb0d04663c7dc6c0096f8717cb4ec26330a5ae40
+Author: Yun Peng <pcloudy@google.com>
+Date:   Wed Jun 3 15:35:31 2020 +0200
+
+    Patch grpc v1.26.0 for Bazel build
+
+    - Avoid loading dependencies that're not needed for the gRPC C++
+    libraries
+    - Add bazel mirror URL for upb and cares
+    - Redirect zlib to @//third_party/zlib
+    - Add darwin_arm64 and darwin_arm64e config settings to allow
+    building for Apple Silicon
+
+diff --git a/bazel/grpc_build_system.bzl b/bazel/grpc_build_system.bzl
+index 7bb6b8bdb9..7644107b70 100644
+--- a/bazel/grpc_build_system.bzl
++++ b/bazel/grpc_build_system.bzl
+@@ -25,7 +25,7 @@
+
+ load("//bazel:cc_grpc_library.bzl", "cc_grpc_library")
+ load("@upb//bazel:upb_proto_library.bzl", "upb_proto_library")
+-load("@build_bazel_rules_apple//apple:ios.bzl", "ios_unit_test")
++# load("@build_bazel_rules_apple//apple:ios.bzl", "ios_unit_test")
+
+ # The set of pollers to test against if a test exercises polling
+ POLLERS = ["epollex", "epoll1", "poll"]
+@@ -181,13 +181,13 @@ def ios_cc_test(
+             testonly = 1,
+         )
+         ios_test_deps = [ios_test_adapter, ":" + test_lib_ios]
+-        ios_unit_test(
+-            name = name + "_on_ios",
+-            size = kwargs.get("size"),
+-            tags = ios_tags,
+-            minimum_os_version = "9.0",
+-            deps = ios_test_deps,
+-        )
++        # ios_unit_test(
++        #     name = name + "_on_ios",
++        #     size = kwargs.get("size"),
++        #     tags = ios_tags,
++        #     minimum_os_version = "9.0",
++        #     deps = ios_test_deps,
++        # )
+
+ def grpc_cc_test(name, srcs = [], deps = [], external_deps = [], args = [], data = [], uses_polling = True, language = "C++", size = "medium", timeout = None, tags = [], exec_compatible_with = [], exec_properties = {}, shard_count = None, flaky = None):
+     copts = if_mac(["-DGRPC_CFSTREAM"])
+diff --git a/bazel/grpc_deps.bzl b/bazel/grpc_deps.bzl
+index 09fcad95a2..9b737e5deb 100644
+--- a/bazel/grpc_deps.bzl
++++ b/bazel/grpc_deps.bzl
+@@ -33,7 +33,7 @@ def grpc_deps():
+
+     native.bind(
+         name = "madler_zlib",
+-        actual = "@zlib//:zlib",
++        actual = "@//third_party/zlib",
+     )
+
+     native.bind(
+diff --git a/bazel/grpc_extra_deps.bzl b/bazel/grpc_extra_deps.bzl
+index 4c1dfad2e8..f63c54ddef 100644
+--- a/bazel/grpc_extra_deps.bzl
++++ b/bazel/grpc_extra_deps.bzl
+@@ -1,11 +1,6 @@
+ """Loads the dependencies necessary for the external repositories defined in grpc_deps.bzl."""
+
+-load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
+ load("@upb//bazel:workspace_deps.bzl", "upb_deps")
+-load("@envoy_api//bazel:repositories.bzl", "api_dependencies")
+-load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_dependencies")
+-load("@build_bazel_rules_apple//apple:repositories.bzl", "apple_rules_dependencies")
+-load("@build_bazel_apple_support//lib:repositories.bzl", "apple_support_dependencies")
+
+ def grpc_extra_deps():
+     """Loads the extra dependencies.
+@@ -26,15 +21,5 @@ def grpc_extra_deps():
+     grpc_extra_deps()
+     ```
+     """
+-    protobuf_deps()
+-
+     upb_deps()
+
+-    api_dependencies()
+-
+-    go_rules_dependencies()
+-    go_register_toolchains()
+-
+-    apple_rules_dependencies()
+-
+-    apple_support_dependencies()
+diff --git a/third_party/cares/cares.BUILD b/third_party/cares/cares.BUILD
+index c047f0c515..7c24fbc617 100644
+--- a/third_party/cares/cares.BUILD
++++ b/third_party/cares/cares.BUILD
+@@ -10,6 +10,16 @@ config_setting(
+     values = {"cpu": "darwin_x86_64"},
+ )
+
++config_setting(
++    name = "darwin_arm64",
++    values = {"cpu": "darwin_arm64"},
++)
++
++config_setting(
++    name = "darwin_arm64e",
++    values = {"cpu": "darwin_arm64e"},
++)
++
+ config_setting(
+     name = "windows",
+     values = {"cpu": "x64_windows"},
+@@ -99,6 +109,8 @@ copy_file(
+         ":watchos_arm64_32": "@com_github_grpc_grpc//third_party/cares:config_darwin/ares_config.h",
+         ":darwin": "@com_github_grpc_grpc//third_party/cares:config_darwin/ares_config.h",
+         ":darwin_x86_64": "@com_github_grpc_grpc//third_party/cares:config_darwin/ares_config.h",
++        ":darwin_arm64": "@com_github_grpc_grpc//third_party/cares:config_darwin/ares_config.h",
++        ":darwin_arm64e": "@com_github_grpc_grpc//third_party/cares:config_darwin/ares_config.h",
+         ":windows": "@com_github_grpc_grpc//third_party/cares:config_windows/ares_config.h",
+         ":android": "@com_github_grpc_grpc//third_party/cares:config_android/ares_config.h",
+         "//conditions:default": "@com_github_grpc_grpc//third_party/cares:config_linux/ares_config.h",