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Merge pull request #49 from Bitcoin-com/fix/backup-poller
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146 changes: 146 additions & 0 deletions
146
app/src/main/java/com/bitcoin/merchant/app/network/websocket/impl/poller/PollerSocket.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,146 @@ | ||
| package com.bitcoin.merchant.app.network.websocket.impl.poller; | ||
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| import android.util.Log; | ||
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| import com.bitcoin.merchant.app.network.ExpectedAmounts; | ||
| import com.bitcoin.merchant.app.network.ExpectedPayments; | ||
| import com.bitcoin.merchant.app.network.PaymentReceived; | ||
| import com.bitcoin.merchant.app.network.websocket.TxWebSocketHandler; | ||
| import com.bitcoin.merchant.app.network.websocket.WebSocketListener; | ||
| import com.bitcoin.merchant.app.network.websocket.impl.TxWebSocketHandlerImpl; | ||
| import com.google.gson.JsonObject; | ||
| import com.neovisionaries.ws.client.WebSocket; | ||
| import com.neovisionaries.ws.client.WebSocketFactory; | ||
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| import org.json.JSONArray; | ||
| import org.json.JSONException; | ||
| import org.json.JSONObject; | ||
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| import java.io.IOException; | ||
| import java.util.HashMap; | ||
| import java.util.HashSet; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.concurrent.ExecutorService; | ||
| import java.util.concurrent.Executors; | ||
| import java.util.concurrent.ScheduledExecutorService; | ||
| import java.util.concurrent.ScheduledThreadPoolExecutor; | ||
| import java.util.concurrent.TimeUnit; | ||
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| import okhttp3.OkHttpClient; | ||
| import okhttp3.Request; | ||
| import okhttp3.Response; | ||
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| public class PollerSocket implements TxWebSocketHandler { | ||
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| private WebSocketListener webSocketListener; | ||
| private final OkHttpClient okHttpClient; | ||
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| private String BASE_URL = "https://rest.bch.actorforth.org/v2/address/utxo/"; | ||
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| private ScheduledExecutorService executorService; | ||
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| private final Set<String> subscribedAddresses = new HashSet<>(); | ||
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| private final Set<String> alreadyHandled = new HashSet<>(); | ||
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| public PollerSocket(WebSocketListener webSocketListener, OkHttpClient okHttpClient) { | ||
| this.webSocketListener = webSocketListener; | ||
| this.okHttpClient = okHttpClient; | ||
| } | ||
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| @Override | ||
| public void setListener(WebSocketListener webSocketListener) { | ||
| this.webSocketListener = webSocketListener; | ||
| } | ||
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| @Override | ||
| public void subscribeToAddress(String address) { | ||
| subscribedAddresses.add(address); | ||
| } | ||
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| @Override | ||
| public void start() { | ||
| if (executorService != null && !executorService.isShutdown()) { | ||
| return; | ||
| } | ||
| Log.i("Poller Task", "Starting poller task"); | ||
| executorService = Executors.newSingleThreadScheduledExecutor(); | ||
| executorService.scheduleAtFixedRate(createPollerTask(), 0, 5, TimeUnit.SECONDS); | ||
| } | ||
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| @Override | ||
| public void stop() { | ||
| if (executorService == null) { | ||
| return; | ||
| } | ||
| Log.i("Poller Task", "Stopping poller task"); | ||
| executorService.shutdownNow(); | ||
| } | ||
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| @Override | ||
| public boolean isConnected() { | ||
| return true; | ||
| } | ||
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| /*{ | ||
| "height": 653632, | ||
| "txid": "78ffb00ae72702b0a37f7c2e85cc40caca7fde3086637f18d29e4a208e2bbfb5", | ||
| "vout": 0, | ||
| "satoshis": 8673, | ||
| "amount": 0.00008673, | ||
| "confirmations": 192489 | ||
| }*/ | ||
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| private Runnable createPollerTask() { | ||
| return () -> { | ||
| Log.i("Poller Task", "Polling for new transactions"); | ||
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| try { | ||
| for (String subscribedAddress : subscribedAddresses) { | ||
| String query = BASE_URL + subscribedAddress; | ||
| Request request = new Request.Builder() | ||
| .get() | ||
| .url(query) | ||
| .build(); | ||
| Response execute = okHttpClient.newCall(request).execute(); | ||
| JSONObject jsonObject = new JSONObject(execute.body().string()); | ||
| JSONArray utxos = jsonObject.getJSONArray("utxos"); | ||
| Log.i("Poller Task", "Found " + utxos.length() + " utxos for address " + subscribedAddress); | ||
| searchUtxos(subscribedAddress, utxos); | ||
| } | ||
| } catch (Exception e) { | ||
| Log.e("Poller Task", "Error while polling for new transactions", e); | ||
| } | ||
| }; | ||
| } | ||
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| private void searchUtxos(String subscribedAddress, JSONArray utxos) throws JSONException { | ||
| for (int i = 0; i < utxos.length(); i++) { | ||
| JSONObject utxo = utxos.getJSONObject(i); | ||
| long satoshis = utxo.getLong("satoshis"); | ||
| String txid = utxo.getString("txid"); | ||
| int confirmations = utxo.getInt("confirmations"); | ||
| if (confirmations == 0) { | ||
| Log.i("Poller Task", "Found unconfirmed transaction for address " + subscribedAddress + " with txid " + txid + " and amount " + satoshis + " satoshis"); | ||
| triggerPaymentReceived(subscribedAddress, satoshis, txid); | ||
| } | ||
| } | ||
| } | ||
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| private void triggerPaymentReceived(String subscribedAddress, long satoshis, String txid) { | ||
| ExpectedAmounts expected = ExpectedPayments.getInstance().getExpectedAmounts(subscribedAddress); | ||
| if (alreadyHandled.contains(txid)) { | ||
| return; | ||
| } | ||
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| webSocketListener.onIncomingPayment(new PaymentReceived( | ||
| subscribedAddress, | ||
| satoshis, | ||
| txid, | ||
| System.currentTimeMillis() / 1000, 0, | ||
| expected | ||
| )); | ||
| alreadyHandled.add(txid); | ||
| } | ||
| } |