feat: allow max HTTP response size to be set using the manifest (#19)

Author: zach

src/main/java/org/extism/sdk/manifest/MemoryOptions.java

@@ -6,13 +6,18 @@
  * Configures memory for the Wasm runtime.
  * Memory is described in units of pages (64KB) and represent contiguous chunks of addressable memory.
  *
- * @param max Max number of pages.
+ * @param maxPages Max number of pages.
+ * @param httpMax Max number of bytes returned by HTTP requests using extism_http_request
  */
 public class MemoryOptions {
-    @SerializedName("max")
-    private final Integer max;
+    @SerializedName("max_pages")
+    private final Integer maxPages;
 
-    public MemoryOptions(Integer max) {
-        this.max = max;
+    @SerializedName("max_http_response_bytes")
+    private final Integer maxHttpResponseBytes;
+
+    public MemoryOptions(Integer maxPages, Integer httpMax) {
+        this.maxPages = maxPages;
+        this.maxHttpResponseBytes = httpMax;
     }
 }

src/test/java/org/extism/sdk/ManifestTests.java

@@ -32,13 +32,14 @@ public void shouldSerializeManifestWithWasmSourceToJson() {
     @Test
     public void shouldSerializeManifestWithWasmSourceAndMemoryOptionsToJson() {
 
-        var manifest = new Manifest(List.of(CODE.pathWasmSource()), new MemoryOptions(4));
+        var manifest = new Manifest(List.of(CODE.pathWasmSource()), new MemoryOptions(4, 1024 * 1024 * 10));
         var json = JsonSerde.toJson(manifest);
         assertNotNull(json);
 
         assertJson(json).at("/wasm").isArray();
         assertJson(json).at("/wasm").hasSize(1);
-        assertJson(json).at("/memory/max").isEqualTo(4);
+        assertJson(json).at("/memory/max_pages").isEqualTo(4);
+        assertJson(json).at("/memory/max_http_response_bytes").isEqualTo(1024 * 1024 * 10);
     }
 
     @Test

src/test/java/org/extism/sdk/PluginTests.java

@@ -21,7 +21,7 @@ public class PluginTests {
 
     @Test
     public void shouldInvokeFunctionWithMemoryOptions() {
-        var manifest = new Manifest(List.of(CODE.pathWasmSource()), new MemoryOptions(0));
+        var manifest = new Manifest(List.of(CODE.pathWasmSource()), new MemoryOptions(0, 0));
         assertThrows(ExtismException.class, () -> {
             Extism.invokeFunction(manifest, "count_vowels", "Hello World");
         });