[grpc][Gpr_To_Absl_Logging] Migrating from gpr to absl logging - gpr_log (#36580)upstream-master

[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.

`#define GPR_INFO __FILE__, __LINE__, GPR_LOG_SEVERITY_INFO`
Which means passing explicit parameters to gpr_info will over-ride the file name and line number of the call site.

The right replacement API for this is
`LOG(INFO).AtLocation(absl::string_view file, int line) << ... `

Closes #36580

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36580 from tanvi-jagtap:large_seq_state_tjagtap 8f6dd756c62434b13d9f0a90150934a3677c4e81
PiperOrigin-RevId: 632721079

1 files changed, 342 insertions, 369 deletions

diff --git a/src/core/lib/promise/detail/seq_state.h b/src/core/lib/promise/detail/seq_state.h
index 3e69e60b74..841cd6cb04 100644
--- a/src/core/lib/promise/detail/seq_state.h
+++ b/src/core/lib/promise/detail/seq_state.h
@@ -23,6 +23,7 @@
 
 #include "absl/base/attributes.h"
 #include "absl/log/check.h"
+#include "absl/log/log.h"
 #include "absl/strings/str_cat.h"
 
 #include <grpc/support/log.h>
@@ -144,22 +145,21 @@ struct SeqState<Traits, P, F0> {
     switch (state) {
       case State::kState0: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 1/2", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 1/2";
         }
         auto result = prior.current_promise();
         PromiseResult0* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 1/2 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits0::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits0::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 1/2 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits0::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits0::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits0::IsOk(*p)) {
@@ -177,14 +177,14 @@ struct SeqState<Traits, P, F0> {
       default:
       case State::kState1: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 2/2", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 2/2";
         }
         auto result = current_promise();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: poll step 2/2 gets %s", this,
-                  result.ready() ? "ready" : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 2/2 gets "
+              << (result.ready() ? "ready" : "pending");
         }
         auto* p = result.value_if_ready();
         if (p == nullptr) return Pending{};
@@ -287,22 +287,21 @@ struct SeqState<Traits, P, F0, F1> {
     switch (state) {
       case State::kState0: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 1/3", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 1/3";
         }
         auto result = prior.prior.current_promise();
         PromiseResult0* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 1/3 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits0::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits0::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 1/3 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits0::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits0::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits0::IsOk(*p)) {
@@ -319,22 +318,21 @@ struct SeqState<Traits, P, F0, F1> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState1: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 2/3", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 2/3";
         }
         auto result = prior.current_promise();
         PromiseResult1* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 2/3 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits1::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits1::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 2/3 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits1::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits1::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits1::IsOk(*p)) {
@@ -352,14 +350,14 @@ struct SeqState<Traits, P, F0, F1> {
       default:
       case State::kState2: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 3/3", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 3/3";
         }
         auto result = current_promise();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: poll step 3/3 gets %s", this,
-                  result.ready() ? "ready" : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 3/3 gets "
+              << (result.ready() ? "ready" : "pending");
         }
         auto* p = result.value_if_ready();
         if (p == nullptr) return Pending{};
@@ -489,22 +487,21 @@ struct SeqState<Traits, P, F0, F1, F2> {
     switch (state) {
       case State::kState0: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 1/4", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 1/4";
         }
         auto result = prior.prior.prior.current_promise();
         PromiseResult0* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 1/4 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits0::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits0::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 1/4 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits0::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits0::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits0::IsOk(*p)) {
@@ -521,22 +518,21 @@ struct SeqState<Traits, P, F0, F1, F2> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState1: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 2/4", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 2/4";
         }
         auto result = prior.prior.current_promise();
         PromiseResult1* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 2/4 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits1::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits1::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 2/4 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits1::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits1::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits1::IsOk(*p)) {
@@ -553,22 +549,21 @@ struct SeqState<Traits, P, F0, F1, F2> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState2: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 3/4", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 3/4";
         }
         auto result = prior.current_promise();
         PromiseResult2* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 3/4 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits2::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits2::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 3/4 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits2::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits2::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits2::IsOk(*p)) {
@@ -586,14 +581,14 @@ struct SeqState<Traits, P, F0, F1, F2> {
       default:
       case State::kState3: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 4/4", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 4/4";
         }
         auto result = current_promise();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: poll step 4/4 gets %s", this,
-                  result.ready() ? "ready" : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 4/4 gets "
+              << (result.ready() ? "ready" : "pending");
         }
         auto* p = result.value_if_ready();
         if (p == nullptr) return Pending{};
@@ -751,22 +746,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3> {
     switch (state) {
       case State::kState0: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 1/5", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 1/5";
         }
         auto result = prior.prior.prior.prior.current_promise();
         PromiseResult0* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 1/5 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits0::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits0::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 1/5 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits0::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits0::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits0::IsOk(*p)) {
@@ -783,22 +777,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState1: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 2/5", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 2/5";
         }
         auto result = prior.prior.prior.current_promise();
         PromiseResult1* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 2/5 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits1::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits1::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 2/5 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits1::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits1::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits1::IsOk(*p)) {
@@ -815,22 +808,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState2: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 3/5", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 3/5";
         }
         auto result = prior.prior.current_promise();
         PromiseResult2* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 3/5 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits2::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits2::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 3/5 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits2::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits2::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits2::IsOk(*p)) {
@@ -847,22 +839,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState3: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 4/5", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 4/5";
         }
         auto result = prior.current_promise();
         PromiseResult3* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 4/5 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits3::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits3::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 4/5 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits3::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits3::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits3::IsOk(*p)) {
@@ -880,14 +871,14 @@ struct SeqState<Traits, P, F0, F1, F2, F3> {
       default:
       case State::kState4: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 5/5", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 5/5";
         }
         auto result = current_promise();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: poll step 5/5 gets %s", this,
-                  result.ready() ? "ready" : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 5/5 gets "
+              << (result.ready() ? "ready" : "pending");
         }
         auto* p = result.value_if_ready();
         if (p == nullptr) return Pending{};
@@ -1082,22 +1073,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4> {
     switch (state) {
       case State::kState0: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 1/6", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 1/6";
         }
         auto result = prior.prior.prior.prior.prior.current_promise();
         PromiseResult0* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 1/6 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits0::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits0::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 1/6 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits0::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits0::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits0::IsOk(*p)) {
@@ -1115,22 +1105,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState1: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 2/6", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 2/6";
         }
         auto result = prior.prior.prior.prior.current_promise();
         PromiseResult1* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 2/6 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits1::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits1::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 2/6 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits1::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits1::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits1::IsOk(*p)) {
@@ -1147,22 +1136,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState2: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 3/6", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 3/6";
         }
         auto result = prior.prior.prior.current_promise();
         PromiseResult2* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 3/6 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits2::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits2::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 3/6 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits2::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits2::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits2::IsOk(*p)) {
@@ -1179,22 +1167,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState3: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 4/6", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 4/6";
         }
         auto result = prior.prior.current_promise();
         PromiseResult3* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 4/6 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits3::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits3::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 4/6 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits3::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits3::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits3::IsOk(*p)) {
@@ -1211,22 +1198,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState4: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 5/6", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 5/6";
         }
         auto result = prior.current_promise();
         PromiseResult4* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 5/6 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits4::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits4::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 5/6 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits4::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits4::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits4::IsOk(*p)) {
@@ -1249,9 +1235,9 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4> {
         }
         auto result = current_promise();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: poll step 6/6 gets %s", this,
-                  result.ready() ? "ready" : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 6/6 gets "
+              << (result.ready() ? "ready" : "pending");
         }
         auto* p = result.value_if_ready();
         if (p == nullptr) return Pending{};
@@ -1478,22 +1464,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5> {
     switch (state) {
       case State::kState0: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 1/7", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 1/7";
         }
         auto result = prior.prior.prior.prior.prior.prior.current_promise();
         PromiseResult0* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 1/7 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits0::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits0::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 1/7 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits0::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits0::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits0::IsOk(*p)) {
@@ -1511,22 +1496,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState1: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 2/7", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 2/7";
         }
         auto result = prior.prior.prior.prior.prior.current_promise();
         PromiseResult1* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 2/7 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits1::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits1::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 2/7 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits1::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits1::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits1::IsOk(*p)) {
@@ -1544,22 +1528,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState2: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 3/7", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 3/7";
         }
         auto result = prior.prior.prior.prior.current_promise();
         PromiseResult2* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 3/7 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits2::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits2::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 3/7 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits2::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits2::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits2::IsOk(*p)) {
@@ -1576,22 +1559,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState3: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 4/7", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 4/7";
         }
         auto result = prior.prior.prior.current_promise();
         PromiseResult3* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 4/7 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits3::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits3::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 4/7 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits3::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits3::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits3::IsOk(*p)) {
@@ -1608,22 +1590,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState4: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 5/7", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 5/7";
         }
         auto result = prior.prior.current_promise();
         PromiseResult4* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 5/7 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits4::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits4::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 5/7 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits4::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits4::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits4::IsOk(*p)) {
@@ -1640,22 +1621,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState5: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 6/7", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 6/7";
         }
         auto result = prior.current_promise();
         PromiseResult5* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 6/7 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits5::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits5::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 6/7 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits5::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits5::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits5::IsOk(*p)) {
@@ -1673,14 +1653,14 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5> {
       default:
       case State::kState6: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 7/7", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 7/7";
         }
         auto result = current_promise();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: poll step 7/7 gets %s", this,
-                  result.ready() ? "ready" : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 7/7 gets "
+              << (result.ready() ? "ready" : "pending");
         }
         auto* p = result.value_if_ready();
         if (p == nullptr) return Pending{};
@@ -1940,23 +1920,22 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5, F6> {
     switch (state) {
       case State::kState0: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 1/8", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 1/8";
         }
         auto result =
             prior.prior.prior.prior.prior.prior.prior.current_promise();
         PromiseResult0* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 1/8 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits0::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits0::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 1/8 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits0::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits0::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits0::IsOk(*p)) {
@@ -1975,22 +1954,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5, F6> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState1: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 2/8", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 2/8";
         }
         auto result = prior.prior.prior.prior.prior.prior.current_promise();
         PromiseResult1* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 2/8 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits1::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits1::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 2/8 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits1::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits1::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits1::IsOk(*p)) {
@@ -2008,22 +1986,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5, F6> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState2: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 3/8", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 3/8";
         }
         auto result = prior.prior.prior.prior.prior.current_promise();
         PromiseResult2* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 3/8 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits2::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits2::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 3/8 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits2::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits2::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits2::IsOk(*p)) {
@@ -2041,22 +2018,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5, F6> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState3: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 4/8", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 4/8";
         }
         auto result = prior.prior.prior.prior.current_promise();
         PromiseResult3* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 4/8 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits3::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits3::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 4/8 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits3::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits3::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits3::IsOk(*p)) {
@@ -2073,22 +2049,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5, F6> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState4: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 5/8", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 5/8";
         }
         auto result = prior.prior.prior.current_promise();
         PromiseResult4* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 5/8 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits4::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits4::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 5/8 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits4::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits4::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits4::IsOk(*p)) {
@@ -2105,22 +2080,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5, F6> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState5: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 6/8", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 6/8";
         }
         auto result = prior.prior.current_promise();
         PromiseResult5* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 6/8 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits5::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits5::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 6/8 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits5::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits5::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits5::IsOk(*p)) {
@@ -2137,22 +2111,21 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5, F6> {
         ABSL_FALLTHROUGH_INTENDED;
       case State::kState6: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 7/8", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 7/8";
         }
         auto result = prior.current_promise();
         PromiseResult6* p = result.value_if_ready();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(
-              whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-              "seq[%p]: poll step 7/8 gets %s", this,
-              p != nullptr
-                  ? (PromiseResultTraits6::IsOk(*p)
-                         ? "ready"
-                         : absl::StrCat("early-error:",
-                                        PromiseResultTraits6::ErrorString(*p))
-                               .c_str())
-                  : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 7/8 gets "
+              << (p != nullptr
+                      ? (PromiseResultTraits6::IsOk(*p)
+                             ? "ready"
+                             : absl::StrCat(
+                                   "early-error:",
+                                   PromiseResultTraits6::ErrorString(*p)))
+                      : "pending");
         }
         if (p == nullptr) return Pending{};
         if (!PromiseResultTraits6::IsOk(*p)) {
@@ -2170,14 +2143,14 @@ struct SeqState<Traits, P, F0, F1, F2, F3, F4, F5, F6> {
       default:
       case State::kState7: {
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: begin poll step 8/8", this);
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: begin poll step 8/8";
         }
         auto result = current_promise();
         if (grpc_trace_promise_primitives.enabled()) {
-          gpr_log(whence.file(), whence.line(), GPR_LOG_SEVERITY_INFO,
-                  "seq[%p]: poll step 8/8 gets %s", this,
-                  result.ready() ? "ready" : "pending");
+          LOG(INFO).AtLocation(whence.file(), whence.line())
+              << "seq[" << this << "]: poll step 8/8 gets "
+              << (result.ready() ? "ready" : "pending");
         }
         auto* p = result.value_if_ready();
         if (p == nullptr) return Pending{};