examples/rust: Add a minimal hello world rust example

This is about the smallest it can be.

Its Unit application config would look like

    "applications": {
        "rust-hello-world": {
            "type": "wasm",
            "module": "/path/to/unit-wasm/examples/rust/hello-world/target/wasm32-wasi/debug/rust_hello_world.wasm",
            "request_handler": "uwr_request_handler",
            "malloc_handler": "luw_malloc_handler",
            "free_handler": "luw_free_handler"
        }
    }

Signed-off-by: Andrew Clayton <a.clayton@nginx.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/unit-wasm-conf.json b/unit-wasm-conf.json
index 0f5c3d3..ac17693 100644
--- a/unit-wasm-conf.json
+++ b/unit-wasm-conf.json
@@ -43,6 +43,14 @@
             "action": {
                 "pass": "applications/rust-upload-reflector"
             }
+        },
+        {
+            "match": {
+                "uri": "/rust-hello-world*"
+            },
+            "action": {
+                "pass": "applications/rust-hello-world"
+            }
         }
     ],
 
@@ -82,6 +90,13 @@
             "free_handler": "luw_free_handler",
             "request_end_handler": "uwr_request_end_handler",
             "response_end_handler": "uwr_response_end_handler"
+        },
+        "rust-hello-world": {
+            "type": "wasm",
+            "module": "/path/to/unit-wasm/examples/rust/hello-world/target/wasm32-wasi/debug/rust_hello_world.wasm",
+            "request_handler": "uwr_request_handler",
+            "malloc_handler": "luw_malloc_handler",
+            "free_handler": "luw_free_handler"
         }
     }
 }