[Android] Implement Discover function (#19432)

* Implement Android browse

* Restyled by clang-format

Co-authored-by: Restyled.io <commits@restyled.io>

examples/tv-app/android/App/platform-app/src/main/java/com/matter/tv/server/service/MatterServant.java

@@ -26,6 +26,7 @@
 import chip.platform.AndroidChipPlatform;
 import chip.platform.ChipMdnsCallbackImpl;
 import chip.platform.DiagnosticDataProviderImpl;
+import chip.platform.NsdManagerServiceBrowser;
 import chip.platform.NsdManagerServiceResolver;
 import chip.platform.PreferencesConfigurationManager;
 import chip.platform.PreferencesKeyValueStoreManager;
@@ -132,6 +133,7 @@ public void onCommissioningComplete() {
             new PreferencesKeyValueStoreManager(applicationContext),
             new PreferencesConfigurationManager(applicationContext),
             new NsdManagerServiceResolver(applicationContext),
+            new NsdManagerServiceBrowser(applicationContext),
             new ChipMdnsCallbackImpl(),
             new DiagnosticDataProviderImpl(applicationContext));
 

examples/tv-casting-app/android/App/app/src/main/java/com/chip/casting/app/MainActivity.java

@@ -11,6 +11,7 @@
 import chip.platform.AndroidChipPlatform;
 import chip.platform.ChipMdnsCallbackImpl;
 import chip.platform.DiagnosticDataProviderImpl;
+import chip.platform.NsdManagerServiceBrowser;
 import chip.platform.NsdManagerServiceResolver;
 import chip.platform.PreferencesConfigurationManager;
 import chip.platform.PreferencesKeyValueStoreManager;
@@ -67,6 +68,7 @@ private void initJni() {
             new PreferencesKeyValueStoreManager(applicationContext),
             new PreferencesConfigurationManager(applicationContext),
             new NsdManagerServiceResolver(applicationContext),
+            new NsdManagerServiceBrowser(applicationContext),
             new ChipMdnsCallbackImpl(),
             new DiagnosticDataProviderImpl(applicationContext));
 

src/android/CHIPTest/app/src/main/java/com/tcl/chip/chiptest/MainActivity.kt

@@ -53,6 +53,6 @@ class MainActivity : AppCompatActivity() {
             }.start()
         }
 
-        AndroidChipPlatform(AndroidBleManager(), PreferencesKeyValueStoreManager(this), PreferencesConfigurationManager(this), NsdManagerServiceResolver(this), ChipMdnsCallbackImpl(), DiagnosticDataProviderImpl(this))
+        AndroidChipPlatform(AndroidBleManager(), PreferencesKeyValueStoreManager(this), PreferencesConfigurationManager(this), NsdManagerServiceResolver(this), NsdManagerServiceBrowser(this), ChipMdnsCallbackImpl(), DiagnosticDataProviderImpl(this))
     }
 }

src/android/CHIPTool/app/src/main/java/com/google/chip/chiptool/ChipClient.kt

@@ -25,6 +25,7 @@ import chip.platform.AndroidBleManager
 import chip.platform.AndroidChipPlatform
 import chip.platform.ChipMdnsCallbackImpl
 import chip.platform.DiagnosticDataProviderImpl
+import chip.platform.NsdManagerServiceBrowser
 import chip.platform.NsdManagerServiceResolver
 import chip.platform.PreferencesConfigurationManager
 import chip.platform.PreferencesKeyValueStoreManager
@@ -51,7 +52,7 @@ object ChipClient {
     if (!this::androidPlatform.isInitialized && context != null) {
       //force ChipDeviceController load jni
       ChipDeviceController.loadJni()
-      androidPlatform = AndroidChipPlatform(AndroidBleManager(), PreferencesKeyValueStoreManager(context), PreferencesConfigurationManager(context), NsdManagerServiceResolver(context), ChipMdnsCallbackImpl(), DiagnosticDataProviderImpl(context))
+      androidPlatform = AndroidChipPlatform(AndroidBleManager(), PreferencesKeyValueStoreManager(context), PreferencesConfigurationManager(context), NsdManagerServiceResolver(context), NsdManagerServiceBrowser(context), ChipMdnsCallbackImpl(), DiagnosticDataProviderImpl(context))
     }
     return androidPlatform
   }

src/android/CHIPTool/app/src/main/java/com/google/chip/chiptool/provisioning/AddressCommissioningFragment.kt

@@ -5,17 +5,30 @@ import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.AdapterView
+import android.widget.ArrayAdapter
 import androidx.fragment.app.Fragment
+import com.google.chip.chiptool.ChipClient
 import com.google.chip.chiptool.R
 import com.google.chip.chiptool.setuppayloadscanner.BarcodeFragment
 import com.google.chip.chiptool.setuppayloadscanner.CHIPDeviceInfo
 import com.google.chip.chiptool.util.FragmentUtil
 import kotlinx.android.synthetic.main.address_commissioning_fragment.addressEditText
 import kotlinx.android.synthetic.main.address_commissioning_fragment.commissionBtn
+import kotlinx.android.synthetic.main.address_commissioning_fragment.discoverBtn
+import kotlinx.android.synthetic.main.address_commissioning_fragment.discoverListSpinner
 import kotlinx.android.synthetic.main.address_commissioning_fragment.discriminatorEditText
 import kotlinx.android.synthetic.main.address_commissioning_fragment.pincodeEditText
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
 
 class AddressCommissioningFragment : Fragment() {
+  private val ipAddressList = ArrayList<String>()
+  private val scope = CoroutineScope(Dispatchers.Main + Job())
+
   override fun onCreateView(
     inflater: LayoutInflater,
     container: ViewGroup?,
@@ -45,6 +58,39 @@ class AddressCommissioningFragment : Fragment() {
         )
       )
     }
+
+    discoverBtn.setOnClickListener { _ ->
+      discoverBtn.isEnabled = false
+      val deviceController = ChipClient.getDeviceController(requireContext())
+      deviceController.discoverCommissionableNodes()
+      scope.launch {
+        delay(7000)
+        updateSpinner()
+        discoverBtn.isEnabled = true
+      }
+    }
+  }
+
+  private fun updateSpinner() {
+    val deviceController = ChipClient.getDeviceController(requireContext())
+    for(i in 0..10) {
+      val device = deviceController.getDiscoveredDevice(i) ?: break
+      ipAddressList.add("${device.ipAddress}, ${device.discriminator}")
+    }
+    requireActivity().runOnUiThread {
+      discoverListSpinner.adapter =
+        ArrayAdapter(requireContext(), android.R.layout.simple_spinner_dropdown_item, ipAddressList)
+      discoverListSpinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
+        override fun onItemSelected(parent: AdapterView<*>, view: View, position: Int, id: Long) {
+          val address = ipAddressList[position].split(",")[0].trim()
+          val discriminator = ipAddressList[position].split(",")[1].trim()
+          addressEditText.setText(address)
+          discriminatorEditText.setText(discriminator)
+        }
+
+        override fun onNothingSelected(parent: AdapterView<*>) {}
+      }
+    }
   }
 
   companion object {

src/android/CHIPTool/app/src/main/res/layout/address_commissioning_fragment.xml

@@ -16,6 +16,7 @@
       app:layout_constraintTop_toTopOf="parent" />
 
   <androidx.constraintlayout.helper.widget.Flow
+      android:id="@+id/address_commissioning_fragment_flow"
       android:layout_width="0dp"
       android:layout_height="wrap_content"
       app:constraint_referenced_ids="addressLabel,addressEditText,discriminatorLabel,discriminatorEditText,pincodeLabel,pincodeEditText"
@@ -74,6 +75,28 @@
       android:inputType="number"
       android:text="@string/default_pincode" />
 
+  <LinearLayout
+      android:layout_width="match_parent"
+      android:layout_height="wrap_content"
+      android:orientation="vertical"
+      android:layout_margin="16dp"
+      app:layout_constraintEnd_toEndOf="parent"
+      app:layout_constraintStart_toStartOf="parent"
+      app:layout_constraintTop_toBottomOf="@id/address_commissioning_fragment_flow">
+
+    <Button
+        android:id="@+id/discoverBtn"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/dns_discover_btn_text"/>
+
+    <Spinner
+        android:id="@+id/discoverListSpinner"
+        android:padding="8dp"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+  </LinearLayout>
   <Button
       android:id="@+id/commissionBtn"
       android:layout_width="wrap_content"

src/android/CHIPTool/app/src/main/res/values/strings.xml

@@ -38,6 +38,7 @@
     <string name="enter_discriminator_label_text">Discriminator</string>
     <string name="enter_pincode_label_text">Pincode</string>
     <string name="commission_btn_text">Commission</string>
+    <string name="dns_discover_btn_text">Discover</string>
 
     <string name="send_command_on_btn_text">On</string>
     <string name="send_command_off_btn_text">Off</string>

src/controller/java/BUILD.gn

@@ -85,6 +85,7 @@ android_library("java") {
     "src/chip/devicecontroller/ChipCommandType.java",
     "src/chip/devicecontroller/ChipDeviceController.java",
     "src/chip/devicecontroller/ChipDeviceControllerException.java",
+    "src/chip/devicecontroller/DiscoveredDevice.java",
     "src/chip/devicecontroller/GetConnectedDeviceCallbackJni.java",
     "src/chip/devicecontroller/NetworkCredentials.java",
     "src/chip/devicecontroller/NetworkLocation.java",

src/controller/java/CHIPDeviceController-JNI.cpp

@@ -574,6 +574,55 @@ JNI_METHOD(void, updateDevice)(JNIEnv * env, jobject self, jlong handle, jlong f
     }
 }
 
+JNI_METHOD(void, discoverCommissionableNodes)(JNIEnv * env, jobject self, jlong handle)
+{
+    chip::DeviceLayer::StackLock lock;
+
+    AndroidDeviceControllerWrapper * wrapper = AndroidDeviceControllerWrapper::FromJNIHandle(handle);
+    chip::Dnssd::DiscoveryFilter filter(Dnssd::DiscoveryFilterType::kNone, (uint64_t) 0);
+
+    CHIP_ERROR err = wrapper->Controller()->DiscoverCommissionableNodes(filter);
+    if (err != CHIP_NO_ERROR)
+    {
+        ChipLogError(Controller, "Failed to discoverCommissionableNodes");
+        JniReferences::GetInstance().ThrowError(env, sChipDeviceControllerExceptionCls, err);
+    }
+}
+
+JNI_METHOD(jobject, getDiscoveredDevice)(JNIEnv * env, jobject self, jlong handle, jint idx)
+{
+    chip::DeviceLayer::StackLock lock;
+
+    AndroidDeviceControllerWrapper * wrapper = AndroidDeviceControllerWrapper::FromJNIHandle(handle);
+    const Dnssd::DiscoveredNodeData * data   = wrapper->Controller()->GetDiscoveredDevice(idx);
+
+    if (data == nullptr)
+    {
+        return nullptr;
+    }
+
+    jclass discoveredDeviceCls = env->FindClass("chip/devicecontroller/DiscoveredDevice");
+    jmethodID constructor      = env->GetMethodID(discoveredDeviceCls, "<init>", "()V");
+
+    jfieldID discrminatorID = env->GetFieldID(discoveredDeviceCls, "discriminator", "J");
+    jfieldID ipAddressID    = env->GetFieldID(discoveredDeviceCls, "ipAddress", "Ljava/lang/String;");
+
+    jobject discoveredObj = env->NewObject(discoveredDeviceCls, constructor);
+
+    env->SetLongField(discoveredObj, discrminatorID, data->commissionData.longDiscriminator);
+
+    char ipAddress[100];
+    data->resolutionData.ipAddress[0].ToString(ipAddress, 100);
+    jstring jniipAdress = env->NewStringUTF(ipAddress);
+    env->SetObjectField(discoveredObj, ipAddressID, jniipAdress);
+
+    if (data == nullptr)
+    {
+        ChipLogError(Controller, "GetDiscoveredDevice - not found");
+    }
+    return discoveredObj;
+}
+
 JNI_METHOD(jboolean, openPairingWindow)(JNIEnv * env, jobject self, jlong handle, jlong devicePtr, jint duration)
 {
     chip::DeviceLayer::StackLock lock;

src/controller/java/src/chip/devicecontroller/ChipDeviceController.java

@@ -292,6 +292,18 @@ public void updateDevice(long fabricId, long deviceId) {
     updateDevice(deviceControllerPtr, fabricId, deviceId);
   }
 
+  /**
+   * Get commmissionible Node. Commmissionible Node results are able to get using {@link
+   * ChipDeviceController.getDiscoveredDevice}.
+   */
+  public void discoverCommissionableNodes() {
+    discoverCommissionableNodes(deviceControllerPtr);
+  }
+
+  public DiscoveredDevice getDiscoveredDevice(int idx) {
+    return getDiscoveredDevice(deviceControllerPtr, idx);
+  }
+
   public boolean openPairingWindow(long devicePtr, int duration) {
     return openPairingWindow(deviceControllerPtr, devicePtr, duration);
   }
@@ -436,6 +448,10 @@ private native void getConnectedDevicePointer(
 
   private native void updateDevice(long deviceControllerPtr, long fabricId, long deviceId);
 
+  private native void discoverCommissionableNodes(long deviceControllerPtr);
+
+  private native DiscoveredDevice getDiscoveredDevice(long deviceControllerPtr, int idx);
+
   private native boolean openPairingWindow(long deviceControllerPtr, long devicePtr, int duration);
 
   private native boolean openPairingWindowWithPIN(

src/controller/java/src/chip/devicecontroller/DiscoveredDevice.java

@@ -0,0 +1,23 @@
+/*
+ *   Copyright (c) 2020-2021 Project CHIP Authors
+ *   All rights reserved.
+ *
+ *   Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *   Unless required by applicable law or agreed to in writing, software
+ *   distributed under the License is distributed on an "AS IS" BASIS,
+ *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *   See the License for the specific language governing permissions and
+ *   limitations under the License.
+ *
+ */
+package chip.devicecontroller;
+
+public class DiscoveredDevice {
+  public long discriminator;
+  public String ipAddress;
+}

src/platform/android/AndroidChipPlatform-JNI.cpp

@@ -230,19 +230,26 @@ JNI_METHOD(void, setDiagnosticDataProviderManager)(JNIEnv * env, jclass self, jo
     chip::DeviceLayer::DiagnosticDataProviderImpl::GetDefaultInstance().InitializeWithObject(manager);
 }
 
-// for ServiceResolver
-JNI_METHOD(void, nativeSetServiceResolver)(JNIEnv * env, jclass self, jobject resolver, jobject chipMdnsCallback)
+// for ServiceResolver and  ServiceBrowser
+JNI_METHOD(void, nativeSetDnssdDelegates)(JNIEnv * env, jclass self, jobject resolver, jobject browser, jobject chipMdnsCallback)
 {
     chip::DeviceLayer::StackLock lock;
-    chip::Dnssd::InitializeWithObjects(resolver, chipMdnsCallback);
+    chip::Dnssd::InitializeWithObjects(resolver, browser, chipMdnsCallback);
 }
 
 JNI_MDNSCALLBACK_METHOD(void, handleServiceResolve)
-(JNIEnv * env, jclass self, jstring instanceName, jstring serviceType, jstring address, jint port, jobject attributes,
- jlong callbackHandle, jlong contextHandle)
+(JNIEnv * env, jclass self, jstring instanceName, jstring serviceType, jstring hostName, jstring address, jint port,
+ jobject attributes, jlong callbackHandle, jlong contextHandle)
 {
     using ::chip::Dnssd::HandleResolve;
-    HandleResolve(instanceName, serviceType, address, port, attributes, callbackHandle, contextHandle);
+    HandleResolve(instanceName, serviceType, hostName, address, port, attributes, callbackHandle, contextHandle);
+}
+
+JNI_MDNSCALLBACK_METHOD(void, handleServiceBrowse)
+(JNIEnv * env, jclass self, jobjectArray instanceName, jstring serviceType, jlong callbackHandle, jlong contextHandle)
+{
+    using ::chip::Dnssd::HandleBrowse;
+    HandleBrowse(instanceName, serviceType, callbackHandle, contextHandle);
 }
 
 #if CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE

src/platform/android/BUILD.gn

@@ -87,9 +87,11 @@ android_library("java") {
     "java/chip/platform/DiagnosticDataProviderImpl.java",
     "java/chip/platform/KeyValueStoreManager.java",
     "java/chip/platform/NetworkInterface.java",
+    "java/chip/platform/NsdManagerServiceBrowser.java",
     "java/chip/platform/NsdManagerServiceResolver.java",
     "java/chip/platform/PreferencesConfigurationManager.java",
     "java/chip/platform/PreferencesKeyValueStoreManager.java",
+    "java/chip/platform/ServiceBrowser.java",
     "java/chip/platform/ServiceResolver.java",
   ]