deps: update opentelemetry-cpp to 1.18.0

deps/opentelemetry-cpp/.bazelrc

@@ -7,6 +7,9 @@
 # Enable automatic configs based on platform
 common --enable_platform_specific_config
 
+# Make globs that don't match anything fail
+common --incompatible_disallow_empty_glob
+
 # Needed by gRPC to build on some platforms.
 build --copt -DGRPC_BAZEL_BUILD
 

deps/opentelemetry-cpp/api/include/opentelemetry/common/spin_lock_mutex.h

@@ -68,8 +68,10 @@ class SpinLockMutex
 #  else
     __builtin_ia32_pause();
 #  endif
-#elif defined(__arm__)
-    __asm__ volatile("yield" ::: "memory");
+#elif defined(__armel__) || defined(__ARMEL__)
+    asm volatile("nop" ::: "memory");
+#elif defined(__arm__) || defined(__aarch64__)  // arm big endian / arm64
+    __asm__ __volatile__("yield" ::: "memory");
 #else
     // TODO: Issue PAGE/YIELD on other architectures.
 #endif

deps/opentelemetry-cpp/api/include/opentelemetry/common/string_util.h

@@ -15,11 +15,11 @@ class StringUtil
 public:
   static nostd::string_view Trim(nostd::string_view str, size_t left, size_t right) noexcept
   {
-    while (left <= right && str[static_cast<std::size_t>(left)] == ' ')
+    while (left <= right && isspace(str[left]))
     {
       left++;
     }
-    while (left <= right && str[static_cast<std::size_t>(right)] == ' ')
+    while (left <= right && isspace(str[right]))
     {
       right--;
     }

deps/opentelemetry-cpp/api/include/opentelemetry/logs/event_logger.h

@@ -65,9 +65,8 @@ class EventLogger
     }
     nostd::unique_ptr<LogRecord> log_record = delegate_logger->CreateLogRecord();
 
-    IgnoreTraitResult(
-        detail::LogRecordSetterTrait<typename std::decay<ArgumentType>::type>::template Set(
-            log_record.get(), std::forward<ArgumentType>(args))...);
+    IgnoreTraitResult(detail::LogRecordSetterTrait<typename std::decay<ArgumentType>::type>::Set(
+        log_record.get(), std::forward<ArgumentType>(args))...);
 
     EmitEvent(event_name, std::move(log_record));
   }

deps/opentelemetry-cpp/api/include/opentelemetry/logs/logger.h

@@ -72,9 +72,8 @@ class Logger
       return;
     }
 
-    IgnoreTraitResult(
-        detail::LogRecordSetterTrait<typename std::decay<ArgumentType>::type>::template Set(
-            log_record.get(), std::forward<ArgumentType>(args))...);
+    IgnoreTraitResult(detail::LogRecordSetterTrait<typename std::decay<ArgumentType>::type>::Set(
+        log_record.get(), std::forward<ArgumentType>(args))...);
 
     EmitLogRecord(std::move(log_record));
   }

deps/opentelemetry-cpp/api/include/opentelemetry/logs/logger_type_traits.h

@@ -166,8 +166,8 @@ struct LogRecordSetterTrait
                 * = nullptr>
   inline static LogRecord *Set(LogRecord *log_record, ArgumentType &&arg) noexcept
   {
-    return LogRecordSetterTrait<common::KeyValueIterable>::template Set(
-        log_record, std::forward<ArgumentType>(arg));
+    return LogRecordSetterTrait<common::KeyValueIterable>::Set(log_record,
+                                                               std::forward<ArgumentType>(arg));
   }
 
   template <class ArgumentType,

deps/opentelemetry-cpp/api/include/opentelemetry/metrics/meter.h

@@ -21,6 +21,9 @@ class Histogram;
 template <typename T>
 class UpDownCounter;
 
+template <typename T>
+class Gauge;
+
 class ObservableInstrument;
 
 /**
@@ -91,6 +94,27 @@ class Meter
       nostd::string_view description = "",
       nostd::string_view unit        = "") noexcept = 0;
 
+#if OPENTELEMETRY_ABI_VERSION_NO >= 2
+  /**
+   * Creates a Gauge with the passed characteristics and returns a unique_ptr to that Gauge.
+   *
+   * @param name the name of the new Gauge.
+   * @param description a brief description of what the Gauge is used for.
+   * @param unit the unit of metric values following https://unitsofmeasure.org/ucum.html.
+   * @return a unique pointer to the created Gauge.
+   */
+
+  virtual nostd::unique_ptr<Gauge<int64_t>> CreateInt64Gauge(
+      nostd::string_view name,
+      nostd::string_view description = "",
+      nostd::string_view unit        = "") noexcept = 0;
+
+  virtual nostd::unique_ptr<Gauge<double>> CreateDoubleGauge(
+      nostd::string_view name,
+      nostd::string_view description = "",
+      nostd::string_view unit        = "") noexcept = 0;
+#endif
+
   /**
    * Creates a Asynchronous (Observable) Gauge with the passed characteristics and returns a
    * shared_ptr to that Observable Gauge

deps/opentelemetry-cpp/api/include/opentelemetry/metrics/noop.h

@@ -71,6 +71,26 @@ class NoopUpDownCounter : public UpDownCounter<T>
   {}
 };
 
+#if OPENTELEMETRY_ABI_VERSION_NO >= 2
+template <class T>
+class NoopGauge : public Gauge<T>
+{
+public:
+  NoopGauge(nostd::string_view /* name */,
+            nostd::string_view /* description */,
+            nostd::string_view /* unit */) noexcept
+  {}
+  ~NoopGauge() override = default;
+  void Record(T /* value */) noexcept override {}
+  void Record(T /* value */, const context::Context & /* context */) noexcept override {}
+  void Record(T /* value */, const common::KeyValueIterable & /* attributes */) noexcept override {}
+  void Record(T /* value */,
+              const common::KeyValueIterable & /* attributes */,
+              const context::Context & /* context */) noexcept override
+  {}
+};
+#endif
+
 class NoopObservableInstrument : public ObservableInstrument
 {
 public:
@@ -140,6 +160,22 @@ class NoopMeter final : public Meter
     return nostd::unique_ptr<Histogram<double>>{new NoopHistogram<double>(name, description, unit)};
   }
 
+#if OPENTELEMETRY_ABI_VERSION_NO >= 2
+  nostd::unique_ptr<Gauge<int64_t>> CreateInt64Gauge(nostd::string_view name,
+                                                     nostd::string_view description = "",
+                                                     nostd::string_view unit = "") noexcept override
+  {
+    return nostd::unique_ptr<Gauge<int64_t>>{new NoopGauge<int64_t>(name, description, unit)};
+  }
+
+  nostd::unique_ptr<Gauge<double>> CreateDoubleGauge(nostd::string_view name,
+                                                     nostd::string_view description = "",
+                                                     nostd::string_view unit = "") noexcept override
+  {
+    return nostd::unique_ptr<Gauge<double>>{new NoopGauge<double>(name, description, unit)};
+  }
+#endif
+
   nostd::shared_ptr<ObservableInstrument> CreateInt64ObservableGauge(
       nostd::string_view name,
       nostd::string_view description = "",

deps/opentelemetry-cpp/api/include/opentelemetry/metrics/sync_instruments.h

@@ -247,5 +247,82 @@ class UpDownCounter : public SynchronousInstrument
   }
 };
 
+#if OPENTELEMETRY_ABI_VERSION_NO >= 2
+/* A Gauge instrument that records values. */
+template <class T>
+class Gauge : public SynchronousInstrument
+{
+
+public:
+  /**
+   * Record a value
+   *
+   * @param value The measurement value. May be positive, negative or zero.
+   */
+  virtual void Record(T value) noexcept = 0;
+
+  /**
+   * Record a value
+   *
+   * @param value The measurement value. May be positive, negative or zero.
+   * @param context The explicit context to associate with this measurement.
+   */
+  virtual void Record(T value, const context::Context &context) noexcept = 0;
+
+  /**
+   * Record a value with a set of attributes.
+   *
+   * @param value The measurement value. May be positive, negative or zero.
+   * @param attributes A set of attributes to associate with the value.
+   */
+
+  virtual void Record(T value, const common::KeyValueIterable &attributes) noexcept = 0;
+
+  /**
+   * Record a value with a set of attributes.
+   *
+   * @param value The measurement value. May be positive, negative or zero.
+   * @param attributes A set of attributes to associate with the value.
+   * @param context The explicit context to associate with this measurement.
+   */
+  virtual void Record(T value,
+                      const common::KeyValueIterable &attributes,
+                      const context::Context &context) noexcept = 0;
+
+  template <class U,
+            nostd::enable_if_t<common::detail::is_key_value_iterable<U>::value> * = nullptr>
+  void Record(T value, const U &attributes) noexcept
+  {
+    this->Record(value, common::KeyValueIterableView<U>{attributes});
+  }
+
+  template <class U,
+            nostd::enable_if_t<common::detail::is_key_value_iterable<U>::value> * = nullptr>
+  void Record(T value, const U &attributes, const context::Context &context) noexcept
+  {
+    this->Record(value, common::KeyValueIterableView<U>{attributes}, context);
+  }
+
+  void Record(T value,
+              std::initializer_list<std::pair<nostd::string_view, common::AttributeValue>>
+                  attributes) noexcept
+  {
+    this->Record(value, nostd::span<const std::pair<nostd::string_view, common::AttributeValue>>{
+                            attributes.begin(), attributes.end()});
+  }
+
+  void Record(
+      T value,
+      std::initializer_list<std::pair<nostd::string_view, common::AttributeValue>> attributes,
+      const context::Context &context) noexcept
+  {
+    this->Record(value,
+                 nostd::span<const std::pair<nostd::string_view, common::AttributeValue>>{
+                     attributes.begin(), attributes.end()},
+                 context);
+  }
+};
+#endif
+
 }  // namespace metrics
 OPENTELEMETRY_END_NAMESPACE

deps/opentelemetry-cpp/api/include/opentelemetry/nostd/internal/absl/README.md

@@ -1,4 +1,4 @@
 # Notes on Abseil Variant implementation
 
-This is a snapshot of Abseil Variant `absl::variant` from Abseil
-`v2020-03-03#8`.
+This is a snapshot of Abseil Variant
+`absl::OTABSL_OPTION_NAMESPACE_NAME::variant` from Abseil `v2020-03-03#8`.

deps/opentelemetry-cpp/api/include/opentelemetry/nostd/internal/absl/base/config.h

@@ -84,7 +84,7 @@
 // namespace absl {
 // OTABSL_NAMESPACE_BEGIN
 //
-// void Foo();  // absl::Foo().
+// void Foo();  // absl::OTABSL_OPTION_NAMESPACE_NAME::Foo().
 //
 // OTABSL_NAMESPACE_END
 // }  // namespace absl
@@ -94,40 +94,32 @@
 // not support forward declarations of its own types, nor does it support
 // user-provided specialization of Abseil templates.  Code that violates these
 // rules may be broken without warning.)
-#if !defined(OTABSL_OPTION_USE_INLINE_NAMESPACE) || \
-    !defined(OTABSL_OPTION_INLINE_NAMESPACE_NAME)
+#if !defined(OTABSL_OPTION_NAMESPACE_NAME)
 #error options.h is misconfigured.
 #endif
 
-// Check that OTABSL_OPTION_INLINE_NAMESPACE_NAME is neither "head" nor ""
-#if defined(__cplusplus) && OTABSL_OPTION_USE_INLINE_NAMESPACE == 1
+// Check that OTABSL_OPTION_NAMESPACE_NAME is neither "head" nor ""
+#if defined(__cplusplus)
 
 #define OTABSL_INTERNAL_INLINE_NAMESPACE_STR \
-  OTABSL_INTERNAL_TOKEN_STR(OTABSL_OPTION_INLINE_NAMESPACE_NAME)
+  OTABSL_INTERNAL_TOKEN_STR(OTABSL_OPTION_NAMESPACE_NAME)
 
 static_assert(OTABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != '\0',
-              "options.h misconfigured: OTABSL_OPTION_INLINE_NAMESPACE_NAME must "
+              "options.h misconfigured: OTABSL_OPTION_NAMESPACE_NAME must "
               "not be empty.");
 static_assert(OTABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
                   OTABSL_INTERNAL_INLINE_NAMESPACE_STR[1] != 'e' ||
                   OTABSL_INTERNAL_INLINE_NAMESPACE_STR[2] != 'a' ||
                   OTABSL_INTERNAL_INLINE_NAMESPACE_STR[3] != 'd' ||
                   OTABSL_INTERNAL_INLINE_NAMESPACE_STR[4] != '\0',
-              "options.h misconfigured: OTABSL_OPTION_INLINE_NAMESPACE_NAME must "
+              "options.h misconfigured: OTABSL_OPTION_NAMESPACE_NAME must "
               "be changed to a new, unique identifier name.");
 
 #endif
 
-#if OTABSL_OPTION_USE_INLINE_NAMESPACE == 0
-#define OTABSL_NAMESPACE_BEGIN
-#define OTABSL_NAMESPACE_END
-#elif OTABSL_OPTION_USE_INLINE_NAMESPACE == 1
-#define OTABSL_NAMESPACE_BEGIN \
-  inline namespace OTABSL_OPTION_INLINE_NAMESPACE_NAME {
+
+#define OTABSL_NAMESPACE_BEGIN namespace OTABSL_OPTION_NAMESPACE_NAME {
 #define OTABSL_NAMESPACE_END }
-#else
-#error options.h is misconfigured.
-#endif
 
 // -----------------------------------------------------------------------------
 // Compiler Feature Checks
@@ -217,7 +209,7 @@ static_assert(OTABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 
 // OTABSL_HAVE_SOURCE_LOCATION_CURRENT
 //
-// Indicates whether `absl::SourceLocation::current()` will return useful
+// Indicates whether `absl::OTABSL_OPTION_NAMESPACE_NAME::SourceLocation::current()` will return useful
 // information in some contexts.
 #ifndef OTABSL_HAVE_SOURCE_LOCATION_CURRENT
 #if OTABSL_INTERNAL_HAS_KEYWORD(__builtin_LINE) && \
@@ -570,7 +562,7 @@ static_assert(OTABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 
 // OTABSL_USES_STD_ANY
 //
-// Indicates whether absl::any is an alias for std::any.
+// Indicates whether absl::OTABSL_OPTION_NAMESPACE_NAME::any is an alias for std::any.
 #if !defined(OTABSL_OPTION_USE_STD_ANY)
 #error options.h is misconfigured.
 #elif OTABSL_OPTION_USE_STD_ANY == 0 || \
@@ -585,7 +577,7 @@ static_assert(OTABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 
 // OTABSL_USES_STD_OPTIONAL
 //
-// Indicates whether absl::optional is an alias for std::optional.
+// Indicates whether absl::OTABSL_OPTION_NAMESPACE_NAME::optional is an alias for std::optional.
 #if !defined(OTABSL_OPTION_USE_STD_OPTIONAL)
 #error options.h is misconfigured.
 #elif OTABSL_OPTION_USE_STD_OPTIONAL == 0 || \
@@ -600,7 +592,7 @@ static_assert(OTABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 
 // OTABSL_USES_STD_VARIANT
 //
-// Indicates whether absl::variant is an alias for std::variant.
+// Indicates whether absl::OTABSL_OPTION_NAMESPACE_NAME::variant is an alias for std::variant.
 #if !defined(OTABSL_OPTION_USE_STD_VARIANT)
 #error options.h is misconfigured.
 #elif OTABSL_OPTION_USE_STD_VARIANT == 0 || \
@@ -615,7 +607,7 @@ static_assert(OTABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 
 // OTABSL_USES_STD_STRING_VIEW
 //
-// Indicates whether absl::string_view is an alias for std::string_view.
+// Indicates whether absl::OTABSL_OPTION_NAMESPACE_NAME::string_view is an alias for std::string_view.
 #if !defined(OTABSL_OPTION_USE_STD_STRING_VIEW)
 #error options.h is misconfigured.
 #elif OTABSL_OPTION_USE_STD_STRING_VIEW == 0 || \
@@ -650,15 +642,10 @@ static_assert(OTABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 // the proper count to skip past the CCTZ fork namespace names.  (This number
 // is one larger when there is an inline namespace name to skip.)
 #if defined(_MSC_VER)
-#if OTABSL_OPTION_USE_INLINE_NAMESPACE == 0
-#define OTABSL_INTERNAL_MANGLED_NS "absl"
-#define OTABSL_INTERNAL_MANGLED_BACKREFERENCE "5"
-#else
 #define OTABSL_INTERNAL_MANGLED_NS \
-  OTABSL_INTERNAL_TOKEN_STR(OTABSL_OPTION_INLINE_NAMESPACE_NAME) "@absl"
+  OTABSL_INTERNAL_TOKEN_STR(OTABSL_OPTION_NAMESPACE_NAME) "@absl"
 #define OTABSL_INTERNAL_MANGLED_BACKREFERENCE "6"
 #endif
-#endif
 
 #undef OTABSL_INTERNAL_HAS_KEYWORD