nmode's Git Repositories - signal-cli/blob - src/main/java/org/asamk/signal/storage/threads/JsonThreadStore.java

   1 package org.asamk.signal.storage.threads;
   2
   3 import com.fasterxml.jackson.annotation.JsonProperty;
   4 import com.fasterxml.jackson.core.JsonGenerator;
   5 import com.fasterxml.jackson.core.JsonParser;
   6 import com.fasterxml.jackson.databind.DeserializationContext;
   7 import com.fasterxml.jackson.databind.JsonDeserializer;
   8 import com.fasterxml.jackson.databind.JsonNode;
   9 import com.fasterxml.jackson.databind.JsonSerializer;
  10 import com.fasterxml.jackson.databind.ObjectMapper;
  11 import com.fasterxml.jackson.databind.SerializerProvider;
  12 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
  13 import com.fasterxml.jackson.databind.annotation.JsonSerialize;
  14
  15 import java.io.IOException;
  16 import java.util.ArrayList;
  17 import java.util.HashMap;
  18 import java.util.List;
  19 import java.util.Map;
  20
  21 public class JsonThreadStore {
  22
  23     private static final ObjectMapper jsonProcessor = new ObjectMapper();
  24
  25     @JsonProperty("threads")
  26     @JsonSerialize(using = JsonThreadStore.MapToListSerializer.class)
  27     @JsonDeserialize(using = ThreadsDeserializer.class)
  28     private Map<String, ThreadInfo> threads = new HashMap<>();
  29
  30     public void updateThread(ThreadInfo thread) {
  31         threads.put(thread.id, thread);
  32     }
  33
  34     public ThreadInfo getThread(String id) {
  35         return threads.get(id);
  36     }
  37
  38     public List<ThreadInfo> getThreads() {
  39         return new ArrayList<>(threads.values());
  40     }
  41
  42     private static class MapToListSerializer extends JsonSerializer<Map<?, ?>> {
  43
  44         @Override
  45         public void serialize(final Map<?, ?> value, final JsonGenerator jgen, final SerializerProvider provider) throws IOException {
  46             jgen.writeObject(value.values());
  47         }
  48     }
  49
  50     private static class ThreadsDeserializer extends JsonDeserializer<Map<String, ThreadInfo>> {
  51
  52         @Override
  53         public Map<String, ThreadInfo> deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException {
  54             Map<String, ThreadInfo> threads = new HashMap<>();
  55             JsonNode node = jsonParser.getCodec().readTree(jsonParser);
  56             for (JsonNode n : node) {
  57                 ThreadInfo t = jsonProcessor.treeToValue(n, ThreadInfo.class);
  58                 threads.put(t.id, t);
  59             }
  60
  61             return threads;
  62         }
  63     }
  64 }