Add IoT Metrics Support

src/main/java/software/amazon/awssdk/crt/internal/IoTDeviceSDKMetrics.java

@@ -0,0 +1,21 @@
+/**
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0.
+ */
+package software.amazon.awssdk.crt.internal;
+
+/**
+ * @internal
+ * IoT Device SDK Metrics Structure
+ */
+public class IoTDeviceSDKMetrics {
+    private String libraryName;
+
+    public IoTDeviceSDKMetrics() {
+        this.libraryName = "IoTDeviceSDK/Java";
+    }
+
+    public String getLibraryName() {
+        return libraryName;
+    }
+}

src/main/java/software/amazon/awssdk/crt/mqtt/MqttClientConnection.java

@@ -17,6 +17,7 @@
 import software.amazon.awssdk.crt.mqtt5.Mqtt5Client;
 import software.amazon.awssdk.crt.mqtt5.Mqtt5ClientOptions;
 import software.amazon.awssdk.crt.mqtt5.packets.ConnectPacket;
+import software.amazon.awssdk.crt.internal.IoTDeviceSDKMetrics;
 
 import java.util.concurrent.CompletableFuture;
 import java.util.function.Consumer;
@@ -77,6 +78,7 @@ private static MqttConnectionConfig s_toMqtt3ConnectionConfig(Mqtt5ClientOptions
         options.setProtocolOperationTimeoutMs(mqtt5options.getAckTimeoutSeconds() != null
                 ? Math.toIntExact(mqtt5options.getAckTimeoutSeconds()) * 1000
                 : 0);
+        options.setMetricsEnabled(mqtt5options.getMetricsEnabled());
         return options;
     }
 
@@ -162,6 +164,10 @@ private void SetupConfig(MqttConnectionConfig config) throws MqttException {
                 mqttClientConnectionSetLogin(getNativeHandle(), config.getUsername(), config.getPassword());
             }
 
+            if (config.getMetricsEnabled()) {
+                mqttClientConnectionSetMetrics(getNativeHandle(), new IoTDeviceSDKMetrics());
+            }
+
             if (config.getMinReconnectTimeoutSecs() != 0L && config.getMaxReconnectTimeoutSecs() != 0L) {
                 mqttClientConnectionSetReconnectTimeout(getNativeHandle(), config.getMinReconnectTimeoutSecs(),
                         config.getMaxReconnectTimeoutSecs());
@@ -502,6 +508,9 @@ private static native boolean mqttClientConnectionSetWill(long connection, Strin
     private static native void mqttClientConnectionSetLogin(long connection, String username, String password)
             throws CrtRuntimeException;
 
+    private static native void mqttClientConnectionSetMetrics(long connection, IoTDeviceSDKMetrics metrics)
+            throws CrtRuntimeException;
+
     private static native void mqttClientConnectionSetReconnectTimeout(long connection, long minTimeout,
             long maxTimeout)
             throws CrtRuntimeException;

src/main/java/software/amazon/awssdk/crt/mqtt/MqttConnectionConfig.java

@@ -46,6 +46,9 @@ public final class MqttConnectionConfig extends CrtResource {
     private HttpProxyOptions proxyOptions;
     private Consumer<WebsocketHandshakeTransformArgs> websocketHandshakeTransform;
 
+    /* metrics */
+    private boolean metricsEnabled = true;
+
     public MqttConnectionConfig() {}
 
 
@@ -538,6 +541,24 @@ public Consumer<WebsocketHandshakeTransformArgs> getWebsocketHandshakeTransform(
         return websocketHandshakeTransform;
     }
 
+    /**
+     * Enables or disables IoT Device SDK metrics collection
+     *
+     * @param enabled true to enable metrics, false to disable
+     */
+    public void setMetricsEnabled(boolean enabled) {
+        this.metricsEnabled = enabled;
+    }
+
+    /**
+     * Queries whether IoT Device SDK metrics collection is enabled
+     *
+     * @return true if metrics are enabled, false if disabled
+     */
+    public boolean getMetricsEnabled() {
+        return metricsEnabled;
+    }
+
     /**
      * Creates a (shallow) clone of this config object
      *
@@ -567,6 +588,7 @@ public MqttConnectionConfig clone() {
             clone.setWebsocketHandshakeTransform(getWebsocketHandshakeTransform());
 
             clone.setReconnectTimeoutSecs(getMinReconnectTimeoutSecs(), getMaxReconnectTimeoutSecs());
+            clone.setMetricsEnabled(getMetricsEnabled());
 
             // success, bump up the ref count so we can escape the try-with-resources block
             clone.addRef();

src/main/java/software/amazon/awssdk/crt/mqtt5/Mqtt5ClientOptions.java

@@ -12,6 +12,7 @@
 
 import software.amazon.awssdk.crt.mqtt5.packets.ConnectPacket;
 import software.amazon.awssdk.crt.mqtt.MqttConnectionConfig;
+import software.amazon.awssdk.crt.internal.IoTDeviceSDKMetrics;
 
 import java.util.Map;
 import java.util.function.Function;
@@ -45,6 +46,11 @@ public class Mqtt5ClientOptions {
     private Consumer<Mqtt5WebsocketHandshakeTransformArgs> websocketHandshakeTransform;
     private PublishEvents publishEvents;
     private TopicAliasingOptions topicAliasingOptions;
+    // Indicates whether AWS IoT Metrics are enabled for this client, default to true.
+    // We don't expose this setting in the builder for now.
+    private IoTDeviceSDKMetrics iotDeviceSDKMetrics;
+    private boolean metricsEnabled = true;
+
 
     /**
      * Returns the host name of the MQTT server to connect to.
@@ -263,6 +269,24 @@ public TopicAliasingOptions getTopicAliasingOptions() {
         return this.topicAliasingOptions;
     }
 
+    /**
+     * Returns whether AWS IoT Device SDK metrics collection is enabled
+     *
+     * @return true if metrics are enabled, false otherwise
+     */
+    public boolean getMetricsEnabled() {
+        return this.metricsEnabled;
+    }
+
+    /**
+     * Enables or disables IoT Device SDK metrics collection
+     *
+     * @param enabled true to enable metrics, false to disable
+     */
+    public void setMetricsEnabled(boolean enabled) {
+        this.metricsEnabled = enabled;
+    }
+
     /**
      * Creates a Mqtt5ClientOptionsBuilder instance
      * @param builder The builder to get the Mqtt5ClientOptions values from
@@ -289,6 +313,8 @@ public Mqtt5ClientOptions(Mqtt5ClientOptionsBuilder builder) {
         this.websocketHandshakeTransform = builder.websocketHandshakeTransform;
         this.publishEvents = builder.publishEvents;
         this.topicAliasingOptions = builder.topicAliasingOptions;
+        this.metricsEnabled = builder.metricsEnabled;
+        this.iotDeviceSDKMetrics = new IoTDeviceSDKMetrics();
     }
 
     /*******************************************************************************
@@ -583,6 +609,7 @@ static final public class Mqtt5ClientOptionsBuilder {
         private Consumer<Mqtt5WebsocketHandshakeTransformArgs> websocketHandshakeTransform;
         private PublishEvents publishEvents;
         private TopicAliasingOptions topicAliasingOptions;
+        private boolean metricsEnabled = true;
 
         /**
          * Sets the host name of the MQTT server to connect to.
@@ -850,6 +877,17 @@ public Mqtt5ClientOptionsBuilder withTopicAliasingOptions(TopicAliasingOptions o
             return this;
         }
 
+        /**
+         * Enables or disables IoT Device SDK metrics collection
+         *
+         * @param enabled true to enable metrics, false to disable
+         * @return The Mqtt5ClientOptionsBuilder after setting the metrics option
+         */
+        public Mqtt5ClientOptionsBuilder withMetricsEnabled(boolean enabled) {
+            this.metricsEnabled = enabled;
+            return this;
+        }
+
         /**
          * Creates a new Mqtt5ClientOptionsBuilder instance
          *

src/main/resources/META-INF/native-image/software.amazon.awssdk/crt/aws-crt/jni-config.json

@@ -1256,6 +1256,14 @@
       }
     ]
   },
+  {
+    "name": "software.amazon.awssdk.crt.internal.IoTDeviceSDKMetrics",
+    "fields": [
+      {
+        "name": "libraryName"
+      }
+    ]
+  },
   {
     "name": "software.amazon.awssdk.crt.mqtt5.Mqtt5ClientOptions",
     "fields": [
@@ -1306,6 +1314,12 @@
       },
       {
         "name": "topicAliasingOptions"
+      },
+      {
+        "name": "iotDeviceSDKMetrics"
+      },
+      {
+        "name": "metricsEnabled"
       }
     ],
     "methods": [

src/native/iot_device_sdk_metrics.c

@@ -0,0 +1,76 @@
+/**
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0.
+ */
+#include <jni.h>
+
+#include "iot_device_sdk_metrics.h"
+#include "mqtt5_packets.h"
+#include <aws/mqtt/mqtt.h>
+#include <crt.h>
+#include <java_class_ids.h>
+
+static char s_iot_device_sdk_metrics_string[] = "IoTDeviceSDKMetrics";
+
+void aws_mqtt_iot_metrics_java_jni_destroy(
+    JNIEnv *env,
+    struct aws_allocator *allocator,
+    struct aws_mqtt_iot_metrics_java_jni *java_metrics) {
+    (void)env;
+
+    if (!java_metrics) {
+        return;
+    }
+    AWS_LOGF_DEBUG(AWS_LS_MQTT_GENERAL, "id=%p: Destroying IoTDeviceSDKMetrics", (void *)java_metrics);
+
+    if (aws_byte_buf_is_valid(&java_metrics->library_name_buf)) {
+        aws_byte_buf_clean_up(&java_metrics->library_name_buf);
+    }
+
+    aws_mem_release(allocator, java_metrics);
+}
+
+struct aws_mqtt_iot_metrics_java_jni *aws_mqtt_iot_metrics_java_jni_create_from_java(
+    JNIEnv *env,
+    struct aws_allocator *allocator,
+    jobject java_iot_device_sdk_metrics) {
+
+    struct aws_mqtt_iot_metrics_java_jni *java_metrics =
+        aws_mem_calloc(allocator, 1, sizeof(struct aws_mqtt_iot_metrics_java_jni));
+    if (java_metrics == NULL) {
+        AWS_LOGF_ERROR(
+            AWS_LS_MQTT_GENERAL, "IoTDeviceSDKMetrics create_from_java: Creating new IoTDeviceSDKMetrics failed");
+        return NULL;
+    }
+
+    if (aws_get_string_from_jobject(
+            env,
+            java_iot_device_sdk_metrics,
+            iot_device_sdk_metrics_properties.library_name_field_id,
+            s_iot_device_sdk_metrics_string,
+            "library name",
+            &java_metrics->library_name_buf,
+            &java_metrics->library_name_cursor,
+            false,
+            NULL) == AWS_OP_ERR) {
+        AWS_LOGF_ERROR(AWS_LS_MQTT_GENERAL, "IoTDeviceSDKMetrics create_from_java: No library name found");
+        goto on_error;
+    }
+    java_metrics->metrics.library_name = java_metrics->library_name_cursor;
+
+    return java_metrics;
+
+on_error:
+    /* Clean up */
+    aws_mqtt_iot_metrics_java_jni_destroy(env, allocator, java_metrics);
+    return NULL;
+}
+
+struct aws_mqtt_iot_metrics *aws_mqtt_iot_metrics_java_jni_get_metrics(
+    struct aws_mqtt_iot_metrics_java_jni *java_metrics) {
+    if (java_metrics) {
+        return &java_metrics->metrics;
+    } else {
+        return NULL;
+    }
+}

src/native/iot_device_sdk_metrics.h

@@ -0,0 +1,31 @@
+/**
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0.
+ */
+#ifndef AWS_JNI_IOT_DEVICE_SDK_METRICS_H
+#define AWS_JNI_IOT_DEVICE_SDK_METRICS_H
+
+#include <aws/mqtt/mqtt.h>
+#include <crt.h>
+#include <jni.h>
+
+struct aws_mqtt_iot_metrics_java_jni {
+    struct aws_mqtt_iot_metrics metrics;
+    struct aws_byte_buf library_name_buf;
+    struct aws_byte_cursor library_name_cursor;
+};
+
+void aws_mqtt_iot_metrics_java_jni_destroy(
+    JNIEnv *env,
+    struct aws_allocator *allocator,
+    struct aws_mqtt_iot_metrics_java_jni *java_metrics);
+
+struct aws_mqtt_iot_metrics_java_jni *aws_mqtt_iot_metrics_java_jni_create_from_java(
+    JNIEnv *env,
+    struct aws_allocator *allocator,
+    jobject java_iot_device_sdk_metrics);
+
+struct aws_mqtt_iot_metrics *aws_mqtt_iot_metrics_java_jni_get_metrics(
+    struct aws_mqtt_iot_metrics_java_jni *java_metrics);
+
+#endif /* AWS_JNI_IOT_DEVICE_SDK_METRICS_H */

src/native/java_class_ids.c

@@ -1748,6 +1748,15 @@ static void s_cache_mqtt5_client_options(JNIEnv *env) {
         "topicAliasingOptions",
         "Lsoftware/amazon/awssdk/crt/mqtt5/TopicAliasingOptions;");
     AWS_FATAL_ASSERT(mqtt5_client_options_properties.topic_aliasing_options_field_id);
+    mqtt5_client_options_properties.metrics_enabled_field_id =
+        (*env)->GetFieldID(env, mqtt5_client_options_properties.client_options_class, "metricsEnabled", "Z");
+    AWS_FATAL_ASSERT(mqtt5_client_options_properties.metrics_enabled_field_id);
+    mqtt5_client_options_properties.iot_device_sdk_metrics_field_id = (*env)->GetFieldID(
+        env,
+        mqtt5_client_options_properties.client_options_class,
+        "iotDeviceSDKMetrics",
+        "Lsoftware/amazon/awssdk/crt/internal/IoTDeviceSDKMetrics;");
+    AWS_FATAL_ASSERT(mqtt5_client_options_properties.iot_device_sdk_metrics_field_id);
 }
 
 struct java_aws_mqtt5_topic_aliasing_options_properties mqtt5_topic_aliasing_options_properties;
@@ -2635,6 +2644,19 @@ static void s_cache_cognito_credentials_provider(JNIEnv *env) {
     AWS_FATAL_ASSERT(cognito_credentials_provider_properties.create_chained_future_method_id != NULL);
 }
 
+struct java_iot_device_sdk_metrics_properties iot_device_sdk_metrics_properties;
+
+static void s_cache_iot_device_sdk_metrics(JNIEnv *env) {
+    jclass cls = (*env)->FindClass(env, "software/amazon/awssdk/crt/internal/IoTDeviceSDKMetrics");
+    AWS_FATAL_ASSERT(cls);
+    iot_device_sdk_metrics_properties.iot_device_sdk_metrics_class = (*env)->NewGlobalRef(env, cls);
+    AWS_FATAL_ASSERT(iot_device_sdk_metrics_properties.iot_device_sdk_metrics_class);
+
+    iot_device_sdk_metrics_properties.library_name_field_id = (*env)->GetFieldID(
+        env, iot_device_sdk_metrics_properties.iot_device_sdk_metrics_class, "libraryName", "Ljava/lang/String;");
+    AWS_FATAL_ASSERT(iot_device_sdk_metrics_properties.library_name_field_id);
+}
+
 // Update jni-config.json when adding or modifying JNI classes for GraalVM support.
 static void s_cache_java_class_ids(void *user_data) {
     JNIEnv *env = user_data;
@@ -2752,6 +2774,7 @@ static void s_cache_java_class_ids(void *user_data) {
     s_cache_consumer_properties(env);
     s_cache_cognito_login_token_source(env);
     s_cache_cognito_credentials_provider(env);
+    s_cache_iot_device_sdk_metrics(env);
 }
 
 static aws_thread_once s_cache_once_init = AWS_THREAD_ONCE_STATIC_INIT;

src/native/java_class_ids.h

@@ -722,6 +722,8 @@ struct java_aws_mqtt5_client_options_properties {
     jfieldID publish_events_field_id;
     jfieldID lifecycle_events_field_id;
     jfieldID topic_aliasing_options_field_id;
+    jfieldID metrics_enabled_field_id;
+    jfieldID iot_device_sdk_metrics_field_id;
 };
 extern struct java_aws_mqtt5_client_options_properties mqtt5_client_options_properties;
 
@@ -1107,6 +1109,13 @@ struct java_cognito_credentials_provider_properties {
 
 extern struct java_cognito_credentials_provider_properties cognito_credentials_provider_properties;
 
+/* IoTDeviceSDKMetrics */
+struct java_iot_device_sdk_metrics_properties {
+    jclass iot_device_sdk_metrics_class;
+    jfieldID library_name_field_id;
+};
+extern struct java_iot_device_sdk_metrics_properties iot_device_sdk_metrics_properties;
+
 /**
  * All functions bound to JNI MUST call this before doing anything else.
  * This caches all JNI IDs the first time it is called. Any further calls are no-op; it is thread-safe.