[grpc][Gpr_To_Absl_Logging] Migrating from gpr to absl logging - gpr_log (#36879)

[grpc][Gpr_To_Absl_Logging] Migrating from gpr to absl logging - gpr_log
In this CL we are migrating from gRPCs own gpr logging mechanism to absl logging mechanism. The intention is to deprecate gpr_log in the future.

We have the following mapping

1. gpr_log(GPR_INFO,...) -> LOG(INFO)
2. gpr_log(GPR_ERROR,...) -> LOG(ERROR)
3. gpr_log(GPR_DEBUG,...) -> VLOG(2)

Reviewers need to check :

1. If the above mapping is correct.
2. The content of the log is as before.
gpr_log format strings did not use string_view or std::string . absl LOG accepts these. So there will be some elimination of string_view and std::string related conversions. This is expected.

Closes #36879

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36879 from tanvi-jagtap:test_folder_gpr_log 40eeeaf987
PiperOrigin-RevId: 643593896

test/core/address_utils/parse_address_with_named_scope_id_test.cc

@@ -51,7 +51,7 @@ static void test_grpc_parse_ipv6_parity_with_getaddrinfo(
   grpc_core::ExecCtx exec_ctx;
   absl::StatusOr<grpc_core::URI> uri = grpc_core::URI::Parse(target);
   if (!uri.ok()) {
-    gpr_log(GPR_ERROR, "%s", uri.status().ToString().c_str());
+    LOG(ERROR) << uri.status();
     ASSERT_TRUE(uri.ok());
   }
   grpc_resolved_address addr;
@@ -75,7 +75,7 @@ static void test_grpc_parse_ipv6_parity_with_getaddrinfo(
 struct sockaddr_in6 resolve_with_gettaddrinfo(const char* uri_text) {
   absl::StatusOr<grpc_core::URI> uri = grpc_core::URI::Parse(uri_text);
   if (!uri.ok()) {
-    gpr_log(GPR_ERROR, "%s", uri.status().ToString().c_str());
+    LOG(ERROR) << uri.status();
     EXPECT_TRUE(uri.ok());
   }
   std::string host;

test/core/client_channel/BUILD

@@ -57,7 +57,10 @@ grpc_yodel_simple_test(
 grpc_yodel_simple_test(
     name = "load_balanced_call_destination",
     srcs = ["load_balanced_call_destination_test.cc"],
-    external_deps = ["gtest"],
+    external_deps = [
+        "absl/log:log",
+        "gtest",
+    ],
     deps = [
         "//:grpc_client_channel",
         "//test/core/call/yodel:yodel_test",

test/core/client_channel/client_channel_test.cc

@@ -17,6 +17,7 @@
 #include <atomic>
 #include <memory>
 
+#include "absl/log/log.h"
 #include "absl/strings/string_view.h"
 #include "gtest/gtest.h"
 
@@ -118,7 +119,7 @@ class ClientChannelTest : public YodelTest {
     RefCountedPtr<Subchannel> CreateSubchannel(
         const grpc_resolved_address& address,
         const ChannelArgs& args) override {
-      gpr_log(GPR_INFO, "CreateSubchannel: args=%s", args.ToString().c_str());
+      LOG(INFO) << "CreateSubchannel: args=" << args.ToString();
       return Subchannel::Create(MakeOrphanable<TestConnector>(), address, args);
     }
   };

test/core/end2end/fixtures/http_proxy_fixture.cc

@@ -208,7 +208,7 @@ static void on_read_request_done_locked(void* arg, grpc_error_handle error);
 static void proxy_connection_failed(proxy_connection* conn,
                                     failure_type failure, const char* prefix,
                                     grpc_error_handle error) {
-  gpr_log(GPR_INFO, "%s: %s", prefix, grpc_core::StatusToString(error).c_str());
+  LOG(INFO) << prefix << ": " << grpc_core::StatusToString(error);
   // Decide whether we should shut down the client and server.
   bool shutdown_client = false;
   bool shutdown_server = false;

test/core/iomgr/fd_posix_test.cc

@@ -164,8 +164,7 @@ static void session_read_cb(void* arg,  // session
       // before notify_on_read is called.
       grpc_fd_notify_on_read(se->em_fd, &se->session_read_closure);
     } else {
-      grpc_core::Crash(absl::StrFormat("Unhandled read error %s",
+      LOG(FATAL) << "Unhandled read error " << grpc_core::StrError(errno);
-                                       grpc_core::StrError(errno).c_str()));
     }
   }
 }
@@ -330,8 +329,7 @@ static void client_session_write(void* arg,  // client
     }
     gpr_mu_unlock(g_mu);
   } else {
-    grpc_core::Crash(absl::StrFormat("unknown errno %s",
+    LOG(FATAL) << "unknown errno " << grpc_core::StrError(errno).c_str();
-                                     grpc_core::StrError(errno).c_str()));
   }
 }
 
@@ -348,12 +346,10 @@ static void client_start(client* cl, int port) {
       pfd.events = POLLOUT;
       pfd.revents = 0;
       if (poll(&pfd, 1, -1) == -1) {
-        gpr_log(GPR_ERROR, "poll() failed during connect; errno=%d", errno);
+        LOG(FATAL) << "poll() failed during connect; errno=" << errno;
-        abort();
       }
     } else {
-      grpc_core::Crash(
+      LOG(FATAL) << "Failed to connect to the server (errno=" << errno << ")";
-          absl::StrFormat("Failed to connect to the server (errno=%d)", errno));
     }
   }
 

test/core/slice/slice_test.cc

@@ -33,7 +33,6 @@
 #include "gtest/gtest.h"
 
 #include <grpc/slice.h>
-#include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
 
 #include "src/core/lib/gprpp/memory.h"
@@ -395,14 +394,19 @@ size_t SumSlice(const Slice& slice) {
 TEST(SliceTest, ExternalAsOwned) {
   auto external_string = std::make_unique<std::string>(RandomString(1024));
   Slice slice = Slice::FromExternalString(*external_string);
-  const auto initial_sum = SumSlice(slice);
+  const size_t initial_sum = SumSlice(slice);
   Slice owned = slice.AsOwned();
   EXPECT_EQ(initial_sum, SumSlice(owned));
   external_string.reset();
   // In ASAN (where we can be sure that it'll crash), go ahead and read the
   // bytes we just deleted.
   if (BuiltUnderAsan()) {
-    ASSERT_DEATH({ gpr_log(GPR_DEBUG, "%" PRIdPTR, SumSlice(slice)); }, "");
+    ASSERT_DEATH(
+        {
+          size_t sum = SumSlice(slice);
+          VLOG(2) << sum;
+        },
+        "");
   }
   EXPECT_EQ(initial_sum, SumSlice(owned));
 }