Fix log sdk builder (#1486)

CHANGELOG.md

@@ -15,6 +15,8 @@ Increment the:
 
 ## [Unreleased]
 
+* [LOG SDK] Add log sdk builders (#1486) [#1524](https://github.com/open-telemetry/opentelemetry-cpp/pull/1524)
+
 ## [1.5.0] 2022-07-29
 
 * [EXPORTER BUILD] Add resources to dep list of prometheus exporter test [#1527](https://github.com/open-telemetry/opentelemetry-cpp/pull/1527)

examples/otlp/grpc_log_main.cc

@@ -2,15 +2,11 @@
 // SPDX-License-Identifier: Apache-2.0
 
 #ifdef ENABLE_LOGS_PREVIEW
-// Make sure to include GRPC exporter first because otherwise Abseil may create
-// ambiguity with `nostd::variant`. See issue:
-// https://github.com/open-telemetry/opentelemetry-cpp/issues/880
-#  include "opentelemetry/exporters/otlp/otlp_grpc_log_exporter.h"
-
 #  include "opentelemetry/exporters/otlp/otlp_grpc_exporter_factory.h"
+#  include "opentelemetry/exporters/otlp/otlp_grpc_log_exporter_factory.h"
 #  include "opentelemetry/logs/provider.h"
-#  include "opentelemetry/sdk/logs/logger_provider.h"
-#  include "opentelemetry/sdk/logs/simple_log_processor.h"
+#  include "opentelemetry/sdk/logs/logger_provider_factory.h"
+#  include "opentelemetry/sdk/logs/simple_log_processor_factory.h"
 #  include "opentelemetry/sdk/trace/simple_processor_factory.h"
 #  include "opentelemetry/sdk/trace/tracer_provider_factory.h"
 #  include "opentelemetry/trace/provider.h"
@@ -47,12 +43,11 @@ void InitTracer()
 void InitLogger()
 {
   // Create OTLP exporter instance
-  auto exporter    = std::unique_ptr<logs_sdk::LogExporter>(new otlp::OtlpGrpcLogExporter(opts));
-  auto sdkProvider = std::shared_ptr<logs_sdk::LoggerProvider>(
-      new logs_sdk::LoggerProvider(std::unique_ptr<logs_sdk::LogProcessor>(
-          new logs_sdk::SimpleLogProcessor(std::move(exporter)))));
-  auto apiProvider = nostd::shared_ptr<logs::LoggerProvider>(sdkProvider);
-  auto provider    = nostd::shared_ptr<logs::LoggerProvider>(apiProvider);
+  auto exporter  = otlp::OtlpGrpcLogExporterFactory::Create(opts);
+  auto processor = logs_sdk::SimpleLogProcessorFactory::Create(std::move(exporter));
+  nostd::shared_ptr<logs::LoggerProvider> provider(
+      logs_sdk::LoggerProviderFactory::Create(std::move(processor)));
+
   opentelemetry::logs::Provider::SetLoggerProvider(provider);
 }
 }  // namespace

examples/otlp/http_log_main.cc

@@ -3,10 +3,11 @@
 
 #ifdef ENABLE_LOGS_PREVIEW
 #  include "opentelemetry/exporters/otlp/otlp_http_exporter_factory.h"
-#  include "opentelemetry/exporters/otlp/otlp_http_log_exporter.h"
+#  include "opentelemetry/exporters/otlp/otlp_http_log_exporter_factory.h"
+#  include "opentelemetry/exporters/otlp/otlp_http_log_exporter_options.h"
 #  include "opentelemetry/logs/provider.h"
-#  include "opentelemetry/sdk/logs/logger_provider.h"
-#  include "opentelemetry/sdk/logs/simple_log_processor.h"
+#  include "opentelemetry/sdk/logs/logger_provider_factory.h"
+#  include "opentelemetry/sdk/logs/simple_log_processor_factory.h"
 #  include "opentelemetry/sdk/trace/simple_processor_factory.h"
 #  include "opentelemetry/sdk/trace/tracer_provider_factory.h"
 #  include "opentelemetry/trace/provider.h"
@@ -46,13 +47,11 @@ void InitLogger()
 {
   logger_opts.console_debug = true;
   // Create OTLP exporter instance
-  auto exporter =
-      std::unique_ptr<logs_sdk::LogExporter>(new otlp::OtlpHttpLogExporter(logger_opts));
-  auto sdkProvider = std::shared_ptr<logs_sdk::LoggerProvider>(
-      new logs_sdk::LoggerProvider(std::unique_ptr<logs_sdk::LogProcessor>(
-          new logs_sdk::SimpleLogProcessor(std::move(exporter)))));
-  auto apiProvider = nostd::shared_ptr<logs::LoggerProvider>(sdkProvider);
-  auto provider    = nostd::shared_ptr<logs::LoggerProvider>(apiProvider);
+  auto exporter  = otlp::OtlpHttpLogExporterFactory::Create(logger_opts);
+  auto processor = logs_sdk::SimpleLogProcessorFactory::Create(std::move(exporter));
+  std::shared_ptr<logs::LoggerProvider> provider =
+      logs_sdk::LoggerProviderFactory::Create(std::move(processor));
+
   opentelemetry::logs::Provider::SetLoggerProvider(provider);
 }
 }  // namespace

exporters/otlp/BUILD

@@ -144,10 +144,13 @@ cc_library(
     name = "otlp_http_log_exporter",
     srcs = [
         "src/otlp_http_log_exporter.cc",
+        "src/otlp_http_log_exporter_factory.cc",
     ],
     hdrs = [
         "include/opentelemetry/exporters/otlp/otlp_environment.h",
         "include/opentelemetry/exporters/otlp/otlp_http_log_exporter.h",
+        "include/opentelemetry/exporters/otlp/otlp_http_log_exporter_factory.h",
+        "include/opentelemetry/exporters/otlp/otlp_http_log_exporter_options.h",
         "include/opentelemetry/exporters/otlp/protobuf_include_prefix.h",
         "include/opentelemetry/exporters/otlp/protobuf_include_suffix.h",
     ],
@@ -192,11 +195,13 @@ cc_library(
     name = "otlp_grpc_log_exporter",
     srcs = [
         "src/otlp_grpc_log_exporter.cc",
+        "src/otlp_grpc_log_exporter_factory.cc",
     ],
     hdrs = [
         "include/opentelemetry/exporters/otlp/otlp_environment.h",
         "include/opentelemetry/exporters/otlp/otlp_grpc_exporter_options.h",
         "include/opentelemetry/exporters/otlp/otlp_grpc_log_exporter.h",
+        "include/opentelemetry/exporters/otlp/otlp_grpc_log_exporter_factory.h",
         "include/opentelemetry/exporters/otlp/protobuf_include_prefix.h",
         "include/opentelemetry/exporters/otlp/protobuf_include_suffix.h",
     ],

exporters/otlp/CMakeLists.txt

@@ -29,8 +29,9 @@ if(WITH_OTLP_GRPC)
 
   list(APPEND OPENTELEMETRY_OTLP_TARGETS opentelemetry_exporter_otlp_grpc)
 
-  add_library(opentelemetry_exporter_otlp_grpc_log
-              src/otlp_grpc_log_exporter.cc)
+  add_library(
+    opentelemetry_exporter_otlp_grpc_log src/otlp_grpc_log_exporter.cc
+                                         src/otlp_grpc_log_exporter_factory.cc)
 
   set_target_properties(opentelemetry_exporter_otlp_grpc_log
                         PROPERTIES EXPORT_NAME otlp_grpc_log_exporter)
@@ -90,8 +91,9 @@ if(WITH_OTLP_HTTP)
   list(APPEND OPENTELEMETRY_OTLP_TARGETS opentelemetry_exporter_otlp_http)
 
   if(WITH_LOGS_PREVIEW)
-    add_library(opentelemetry_exporter_otlp_http_log
-                src/otlp_http_log_exporter.cc)
+    add_library(
+      opentelemetry_exporter_otlp_http_log
+      src/otlp_http_log_exporter.cc src/otlp_http_log_exporter_factory.cc)
 
     set_target_properties(opentelemetry_exporter_otlp_http_log
                           PROPERTIES EXPORT_NAME otlp_http_log_exporter)

exporters/otlp/include/opentelemetry/exporters/otlp/otlp_grpc_log_exporter_factory.h

@@ -0,0 +1,39 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#ifdef ENABLE_LOGS_PREVIEW
+
+#  include "opentelemetry/exporters/otlp/otlp_grpc_exporter_options.h"
+#  include "opentelemetry/sdk/logs/exporter.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace exporter
+{
+namespace otlp
+{
+
+/**
+ * Factory class for OtlpGrpcLogExporter.
+ */
+class OtlpGrpcLogExporterFactory
+{
+public:
+  /**
+   * Create a OtlpGrpcLogExporter.
+   */
+  static std::unique_ptr<opentelemetry::sdk::logs::LogExporter> Create();
+
+  /**
+   * Create a OtlpGrpcLogExporter.
+   */
+  static std::unique_ptr<opentelemetry::sdk::logs::LogExporter> Create(
+      const OtlpGrpcExporterOptions &options);
+};
+
+}  // namespace otlp
+}  // namespace exporter
+OPENTELEMETRY_END_NAMESPACE
+
+#endif /* ENABLE_LOGS_PREVIEW */

exporters/otlp/include/opentelemetry/exporters/otlp/otlp_http_log_exporter.h

@@ -9,6 +9,7 @@
 #  include "opentelemetry/exporters/otlp/otlp_http_client.h"
 
 #  include "opentelemetry/exporters/otlp/otlp_environment.h"
+#  include "opentelemetry/exporters/otlp/otlp_http_log_exporter_options.h"
 
 #  include <chrono>
 #  include <cstddef>
@@ -21,47 +22,6 @@ namespace exporter
 namespace otlp
 {
 
-/**
- * Struct to hold OTLP exporter options.
- */
-struct OtlpHttpLogExporterOptions
-{
-  // The endpoint to export to. By default
-  // @see
-  // https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/protocol/otlp.md
-  // @see https://github.com/open-telemetry/opentelemetry-collector/tree/main/receiver/otlpreceiver
-  std::string url = GetOtlpDefaultHttpLogEndpoint();
-
-  // By default, post json data
-  HttpRequestContentType content_type = HttpRequestContentType::kJson;
-
-  // If convert bytes into hex. By default, we will convert all bytes but id into base64
-  // This option is ignored if content_type is not kJson
-  JsonBytesMappingKind json_bytes_mapping = JsonBytesMappingKind::kHexId;
-
-  // If using the json name of protobuf field to set the key of json. By default, we will use the
-  // field name just like proto files.
-  bool use_json_name = false;
-
-  // Whether to print the status of the exporter in the console
-  bool console_debug = false;
-
-  // TODO: Enable/disable to verify SSL certificate
-  std::chrono::system_clock::duration timeout = GetOtlpDefaultLogTimeout();
-
-  // Additional HTTP headers
-  OtlpHeaders http_headers = GetOtlpDefaultLogHeaders();
-
-#  ifdef ENABLE_ASYNC_EXPORT
-  // Concurrent requests
-  // https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/protocol/otlp.md#otlpgrpc-concurrent-requests
-  std::size_t max_concurrent_requests = 64;
-
-  // Requests per connections
-  std::size_t max_requests_per_connection = 8;
-#  endif
-};
-
 /**
  * The OTLP exporter exports log data in OpenTelemetry Protocol (OTLP) format.
  */

exporters/otlp/include/opentelemetry/exporters/otlp/otlp_http_log_exporter_factory.h

@@ -0,0 +1,39 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+#ifdef ENABLE_LOGS_PREVIEW
+
+#  include "opentelemetry/exporters/otlp/otlp_http_log_exporter_options.h"
+#  include "opentelemetry/sdk/logs/exporter.h"
+
+#  include <memory>
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace exporter
+{
+namespace otlp
+{
+
+/**
+ * Factory class for OtlpHttpLogExporter.
+ */
+class OtlpHttpLogExporterFactory
+{
+public:
+  /**
+   * Create a OtlpHttpLogExporter.
+   */
+  static std::unique_ptr<opentelemetry::sdk::logs::LogExporter> Create();
+
+  /**
+   * Create a OtlpHttpLogExporter.
+   */
+  static std::unique_ptr<opentelemetry::sdk::logs::LogExporter> Create(
+      const OtlpHttpLogExporterOptions &options);
+};
+
+}  // namespace otlp
+}  // namespace exporter
+OPENTELEMETRY_END_NAMESPACE
+#endif

exporters/otlp/include/opentelemetry/exporters/otlp/otlp_http_log_exporter_options.h

@@ -0,0 +1,66 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+#ifdef ENABLE_LOGS_PREVIEW
+
+#  include "opentelemetry/exporters/otlp/otlp_http_client.h"
+
+#  include "opentelemetry/sdk/logs/exporter.h"
+
+#  include <chrono>
+#  include <cstddef>
+#  include <memory>
+#  include <string>
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace exporter
+{
+namespace otlp
+{
+
+/**
+ * Struct to hold OTLP exporter options.
+ */
+struct OtlpHttpLogExporterOptions
+{
+  // The endpoint to export to. By default
+  // @see
+  // https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/protocol/otlp.md
+  // @see https://github.com/open-telemetry/opentelemetry-collector/tree/main/receiver/otlpreceiver
+  std::string url = GetOtlpDefaultHttpLogEndpoint();
+
+  // By default, post json data
+  HttpRequestContentType content_type = HttpRequestContentType::kJson;
+
+  // If convert bytes into hex. By default, we will convert all bytes but id into base64
+  // This option is ignored if content_type is not kJson
+  JsonBytesMappingKind json_bytes_mapping = JsonBytesMappingKind::kHexId;
+
+  // If using the json name of protobuf field to set the key of json. By default, we will use the
+  // field name just like proto files.
+  bool use_json_name = false;
+
+  // Whether to print the status of the exporter in the console
+  bool console_debug = false;
+
+  // TODO: Enable/disable to verify SSL certificate
+  std::chrono::system_clock::duration timeout = GetOtlpDefaultLogTimeout();
+
+  // Additional HTTP headers
+  OtlpHeaders http_headers = GetOtlpDefaultLogHeaders();
+
+#  ifdef ENABLE_ASYNC_EXPORT
+  // Concurrent requests
+  // https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/protocol/otlp.md#otlpgrpc-concurrent-requests
+  std::size_t max_concurrent_requests = 64;
+
+  // Requests per connections
+  std::size_t max_requests_per_connection = 8;
+#  endif
+};
+
+}  // namespace otlp
+}  // namespace exporter
+OPENTELEMETRY_END_NAMESPACE
+#endif

exporters/otlp/src/otlp_grpc_log_exporter_factory.cc

@@ -0,0 +1,35 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#ifdef ENABLE_LOGS_PREVIEW
+
+// MUST be first (absl)
+#  include "opentelemetry/exporters/otlp/otlp_grpc_log_exporter.h"
+
+#  include "opentelemetry/exporters/otlp/otlp_grpc_exporter_options.h"
+#  include "opentelemetry/exporters/otlp/otlp_grpc_log_exporter_factory.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace exporter
+{
+namespace otlp
+{
+
+std::unique_ptr<opentelemetry::sdk::logs::LogExporter> OtlpGrpcLogExporterFactory::Create()
+{
+  OtlpGrpcExporterOptions options;
+  return Create(options);
+}
+
+std::unique_ptr<opentelemetry::sdk::logs::LogExporter> OtlpGrpcLogExporterFactory::Create(
+    const OtlpGrpcExporterOptions &options)
+{
+  std::unique_ptr<opentelemetry::sdk::logs::LogExporter> exporter(new OtlpGrpcLogExporter(options));
+  return exporter;
+}
+
+}  // namespace otlp
+}  // namespace exporter
+OPENTELEMETRY_END_NAMESPACE
+
+#endif