feat: move hello_world example to self contained package

Signed-off-by: Martijn Swaagman <[email protected]>

Author: Swaagie

.gitignore

@@ -1,3 +1,3 @@
 /bazel-*
-/target
-/Cargo.lock
+target
+Cargo.lock

Cargo.toml

@@ -16,13 +16,6 @@ hashbrown = "0.12"
 log = "0.4"
 wee_alloc = { version = "0.4", optional = true }
 
-[dev-dependencies]
-cfg-if = "1.0"
-chrono = { version = "0.4", default-features = false, features = ["clock", "std"] }
-
-[target.'cfg(not(all(target_arch = "wasm32", target_os = "unknown")))'.dev-dependencies]
-getrandom = "0.2"
-
 [profile.release]
 lto = true
 opt-level = 3
@@ -35,7 +28,7 @@ genmode = "Remote"
 
 [[example]]
 name = "hello_world"
-path = "examples/hello_world/main.rs"
+path = "examples/hello_world/lib.rs"
 crate-type = ["cdylib"]
 
 [[example]]

examples/BUILD

@@ -2,7 +2,7 @@ load("@rules_rust//rust:defs.bzl", "rust_binary")
 
 rust_binary(
     name = "hello_world",
-    srcs = ["hello_world/main.rs"],
+    srcs = ["hello_world/src/lib.rs"],
     crate_type = "cdylib",
     edition = "2018",
     out_binary = True,

examples/docker-compose.yaml

@@ -20,7 +20,7 @@ services:
       - "10000:10000"
     volumes:
       - ./${EXAMPLE:-hello_world}/envoy.yaml:/etc/envoy/envoy.yaml
-      - ../target/wasm32-wasi/debug/examples:/etc/envoy/filters
+      - ./${EXAMPLE:-hello_world}/target/wasm32-wasi/debug:/etc/envoy/filters
     networks:
       - envoymesh
 

examples/hello_world/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+publish = false
+name = "proxy-wasm-hello-world"
+version = "0.0.1"
+authors = ["Piotr Sikora <[email protected]>"]
+description = "Proxy-Wasm plugin example: hello world"
+license = "Apache-2.0"
+edition = "2018"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+log = "0.4"
+chrono = { version = "0.4", default-features = false, features = ["clock", "std"] }
+wee_alloc = { version = "0.4", optional = true }
+cfg-if = "1.0"
+proxy-wasm = { path = "../../" }
+
+[target.'cfg(not(all(target_arch = "wasm32", target_os = "unknown")))'.dependencies]
+getrandom = "0.2"

examples/hello_world/envoy.yaml

@@ -42,5 +42,5 @@ static_resources:
                           vm_id: "hello_world_vm"
                           code:
                             local:
-                              filename: "/etc/envoy/filters/hello_world.wasm"
+                              filename: "/etc/envoy/filters/proxy_wasm_hello_world.wasm"
                 - name: envoy.filters.http.router