Support Redis forwarding

3 files changed, 54 insertions, 0 deletions

diff --git a/build.gradle b/build.gradle
index 27ab1333b..d452fccca 100644
--- a/build.gradle
+++ b/build.gradle
@@ -83,6 +83,7 @@ dependencies {
     implementation "com.amazonaws:aws-java-sdk-sns:1.12.399"
     implementation "org.apache.kafka:kafka-clients:3.3.2"
     implementation "com.hivemq:hivemq-mqtt-client:1.3.0"
+    implementation 'redis.clients:jedis:4.3.1'
     implementation "com.google.firebase:firebase-admin:9.1.1"
     testImplementation "junit:junit:4.13.2"
     testImplementation "org.mockito:mockito-core:4.+"
diff --git a/src/main/java/org/traccar/MainModule.java b/src/main/java/org/traccar/MainModule.java
index ae637b455..96928b295 100644
--- a/src/main/java/org/traccar/MainModule.java
+++ b/src/main/java/org/traccar/MainModule.java
@@ -41,6 +41,7 @@ import org.traccar.forward.EventForwarderMqtt;
 import org.traccar.forward.PositionForwarder;
 import org.traccar.forward.PositionForwarderJson;
 import org.traccar.forward.PositionForwarderKafka;
+import org.traccar.forward.PositionForwarderRedis;
 import org.traccar.forward.PositionForwarderUrl;
 import org.traccar.geocoder.AddressFormat;
 import org.traccar.geocoder.BanGeocoder;
@@ -348,6 +349,8 @@ public class MainModule extends AbstractModule {
                     return new PositionForwarderJson(config, client, objectMapper);
                 case "kafka":
                     return new PositionForwarderKafka(config, objectMapper);
+                case "redis":
+                    return new PositionForwarderRedis(config, objectMapper);
                 default:
                     return new PositionForwarderUrl(config, client, objectMapper);
             }
diff --git a/src/main/java/org/traccar/forward/PositionForwarderRedis.java b/src/main/java/org/traccar/forward/PositionForwarderRedis.java
new file mode 100644
index 000000000..539d247b6
--- /dev/null
+++ b/src/main/java/org/traccar/forward/PositionForwarderRedis.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Anton Tananaev (anton@traccar.org)
+ *
+ * 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 org.traccar.forward;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.traccar.config.Config;
+import org.traccar.config.Keys;
+import redis.clients.jedis.Jedis;
+
+public class PositionForwarderRedis implements PositionForwarder {
+
+    private final String url;
+
+    private final ObjectMapper objectMapper;
+
+    public PositionForwarderRedis(Config config, ObjectMapper objectMapper) {
+        this.objectMapper = objectMapper;
+        this.url = config.getString(Keys.FORWARD_URL);
+    }
+
+    @Override
+    public void forward(PositionData positionData, ResultHandler resultHandler) {
+
+        try {
+            String key = "positions." + positionData.getDevice().getUniqueId();
+            String value = objectMapper.writeValueAsString(positionData.getPosition());
+            try (Jedis jedis = new Jedis(url)) {
+                jedis.lpush(key, value);
+            }
+            resultHandler.onResult(true, null);
+        } catch (JsonProcessingException e) {
+            resultHandler.onResult(false, e);
+        }
+    }
+
+}