Remove EmitEvent to follow open-telemetry/opentelemetry-specification#2941

Signed-off-by: owent <[email protected]>
Fix `-Werror=suggest-override` and style

Signed-off-by: owent <[email protected]>
Fix ostream_log_test

Signed-off-by: owent <[email protected]>
Fix ostream print_value for `AttributeValue`

Signed-off-by: owent <[email protected]>
New Recordable of logs

Signed-off-by: owent <[email protected]>
Restore .vscode/launch.json

Signed-off-by: owent <[email protected]>
Fix warning.

Signed-off-by: owent <[email protected]>
Fix warnings in maintainer mode and ETW exporter

Signed-off-by: owent <[email protected]>
Add CHANGELOG

Signed-off-by: owent <[email protected]>
Allow to move 'nostd::unique_ptr<T>' into `nostd::shared_ptr<T>`

Signed-off-by: owent <[email protected]>
Do not use `std/type_traits.h` any more. Maybe we should remove this file later.

Signed-off-by: owent <[email protected]>
Allow to add rvalue into `CircularBuffer`

Signed-off-by: owent <[email protected]>
Finish new `LogRecord` for exporters.

Signed-off-by: owent <[email protected]>
Finish unit tests in API and SDK.
Exporters are still work in progress.

Signed-off-by: owent <[email protected]>
New `LogRecord` and `Recordable` implementations.

Signed-off-by: WenTao Ou <[email protected]>

Author: owent

.vscode/launch.json

@@ -1,24 +1,24 @@
 {
-    "version": "0.2.0",
-    "configurations": [
-        {
-            "name": "Debug on Windows",
-            "type": "cppvsdbg",
-            "request": "launch",
-            "program": "${workspaceFolder}/build/<path-to-bin-file>",
-            "args": [],
-            "stopAtEntry": false,
-            "cwd": "${workspaceFolder}",
-            "environment": [],
-            "externalConsole": false
-        },
-        {
-            "name": "Debug on Linux",
-            "type": "gdb",
-            "request": "launch",
-            "target": "${workspaceFolder}/bazel-bin/<path to the bin file>",
-            "cwd": "${workspaceRoot}",
-            "valuesFormatting": "parseText"
-        }
-    ]
+  "version": "0.2.0",
+  "configurations": [
+      {
+          "name": "Debug on Windows",
+          "type": "cppvsdbg",
+          "request": "launch",
+          "program": "${workspaceFolder}/build/<path-to-bin-file>",
+          "args": [],
+          "stopAtEntry": false,
+          "cwd": "${workspaceFolder}",
+          "environment": [],
+          "externalConsole": false
+      },
+      {
+          "name": "Debug on Linux",
+          "type": "gdb",
+          "request": "launch",
+          "target": "${workspaceFolder}/bazel-bin/<path to the bin file>",
+          "cwd": "${workspaceRoot}",
+          "valuesFormatting": "parseText"
+      }
+  ]
 }

CHANGELOG.md

@@ -49,6 +49,8 @@ Increment the:
 * [BUILD] Add CMake OTELCPP_PROTO_PATH [#1730](https://github.com/open-telemetry/opentelemetry-cpp/pull/1730)
 * [SEMANTIC CONVENTIONS] Upgrade to version 1.15.0
   [#1761](https://github.com/open-telemetry/opentelemetry-cpp/pull/1761)
+* [LOGS SDK] New LogRecord and logs::Recordable implementations.
+  [#1766](https://github.com/open-telemetry/opentelemetry-cpp/pull/1766)
 
 Deprecation notes:
 

api/include/opentelemetry/common/key_value_iterable_view.h

@@ -8,6 +8,7 @@
 #include <utility>
 
 #include "opentelemetry/common/key_value_iterable.h"
+#include "opentelemetry/nostd/type_traits.h"
 #include "opentelemetry/nostd/utility.h"
 #include "opentelemetry/version.h"
 
@@ -73,5 +74,12 @@ class KeyValueIterableView final : public KeyValueIterable
 private:
   const T *container_;
 };
+
+template <class T, nostd::enable_if_t<detail::is_key_value_iterable<T>::value> * = nullptr>
+KeyValueIterableView<T> MakeKeyValueIterableView(const T &container) noexcept
+{
+  return KeyValueIterableView<T>(container);
+}
+
 }  // namespace common
 OPENTELEMETRY_END_NAMESPACE

api/include/opentelemetry/logs/log_record.h

@@ -0,0 +1,81 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+#ifdef ENABLE_LOGS_PREVIEW
+
+#  include "opentelemetry/common/attribute_value.h"
+#  include "opentelemetry/common/key_value_iterable.h"
+#  include "opentelemetry/common/timestamp.h"
+#  include "opentelemetry/logs/severity.h"
+#  include "opentelemetry/trace/span_id.h"
+#  include "opentelemetry/trace/trace_flags.h"
+#  include "opentelemetry/trace/trace_id.h"
+#  include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace logs
+{
+/**
+ * Maintains a representation of a log in a format that can be processed by a recorder.
+ *
+ * This class is thread-compatible.
+ */
+class LogRecord
+{
+public:
+  virtual ~LogRecord() = default;
+
+  /**
+   * Set the timestamp for this log.
+   * @param timestamp the timestamp to set
+   */
+  virtual void SetTimestamp(opentelemetry::common::SystemTimestamp timestamp) noexcept = 0;
+
+  /**
+   * Set the observed timestamp for this log.
+   * @param timestamp the timestamp to set
+   */
+  virtual void SetObservedTimestamp(opentelemetry::common::SystemTimestamp timestamp) noexcept = 0;
+
+  /**
+   * Set the severity for this log.
+   * @param severity the severity of the event
+   */
+  virtual void SetSeverity(opentelemetry::logs::Severity severity) noexcept = 0;
+
+  /**
+   * Set body field for this log.
+   * @param message the body to set
+   */
+  virtual void SetBody(const opentelemetry::common::AttributeValue &message) noexcept = 0;
+
+  /**
+   * Set an attribute of a log.
+   * @param key the name of the attribute
+   * @param value the attribute value
+   */
+  virtual void SetAttribute(nostd::string_view key,
+                            const opentelemetry::common::AttributeValue &value) noexcept = 0;
+
+  /**
+   * Set the trace id for this log.
+   * @param trace_id the trace id to set
+   */
+  virtual void SetTraceId(const opentelemetry::trace::TraceId &trace_id) noexcept = 0;
+
+  /**
+   * Set the span id for this log.
+   * @param span_id the span id to set
+   */
+  virtual void SetSpanId(const opentelemetry::trace::SpanId &span_id) noexcept = 0;
+
+  /**
+   * Inject trace_flags for this log.
+   * @param trace_flags the trace flags to set
+   */
+  virtual void SetTraceFlags(const opentelemetry::trace::TraceFlags &trace_flags) noexcept = 0;
+};
+}  // namespace logs
+OPENTELEMETRY_END_NAMESPACE
+#endif