item controller: expose bulk item prices

http-service/src/main/java/net/runelite/http/service/item/ItemController.java

@@ -24,6 +24,8 @@
  */
 package net.runelite.http.service.item;
 
+import com.google.common.base.Supplier;
+import com.google.common.base.Suppliers;
 import com.google.common.cache.Cache;
 import com.google.common.cache.CacheBuilder;
 import java.time.Duration;
@@ -60,10 +62,26 @@ public class ItemController
 
 	private final ItemService itemService;
 
+	private final Supplier<ItemPrice[]> memorizedPrices;
+
 	@Autowired
 	public ItemController(ItemService itemService)
 	{
 		this.itemService = itemService;
+
+		memorizedPrices = Suppliers.memoizeWithExpiration(() -> itemService.fetchPrices().stream()
+			.map(priceEntry ->
+			{
+				Item item = new Item();
+				item.setId(priceEntry.getItem()); // fake item
+
+				ItemPrice itemPrice = new ItemPrice();
+				itemPrice.setItem(item);
+				itemPrice.setPrice(priceEntry.getPrice());
+				itemPrice.setTime(priceEntry.getTime());
+				return itemPrice;
+			})
+			.toArray(ItemPrice[]::new), 30, TimeUnit.MINUTES);
 	}
 
 	@RequestMapping("/{itemId}")
@@ -212,4 +230,12 @@ public class ItemController
 			})
 			.toArray(ItemPrice[]::new);
 	}
+
+	@RequestMapping("/prices")
+	public ResponseEntity<ItemPrice[]> prices()
+	{
+		return ResponseEntity.ok()
+			.cacheControl(CacheControl.maxAge(30, TimeUnit.MINUTES).cachePublic())
+			.body(memorizedPrices.get());
+	}
 }

http-service/src/main/java/net/runelite/http/service/item/ItemService.java

@@ -291,6 +291,16 @@ public class ItemService
 		}
 	}
 
+	public List<PriceEntry> fetchPrices()
+	{
+		try (Connection con = sql2o.beginTransaction())
+		{
+			Query query = con.createQuery("select t2.item, t2.time, prices.price, prices.fetched_time from (select t1.item as item, max(t1.time) as time from prices t1 group by item) t2 join prices on t2.item=prices.item and t2.time=prices.time");
+			List<PriceEntry> entries = query.executeAndFetch(PriceEntry.class);
+			return entries;
+		}
+	}
+
 	private RSItem fetchRSItem(int itemId) throws IOException
 	{
 		HttpUrl itemUrl = RS_ITEM_URL