Add Spin framework adapter

.github/workflows/test.yml

@@ -56,7 +56,7 @@ jobs:
         run: cargo test --workspace --all-targets
 
       - name: Check feature compilation
-        run: cargo check --workspace --all-targets --features "fastly cloudflare"
+        run: cargo check --workspace --all-targets --features "fastly cloudflare spin"
 
   playwright:
     name: playwright tests

.gitignore

@@ -7,6 +7,10 @@
 **/bin/
 **/pkg/
 
+# Spin runtime logs
+.spin/logs/
+**/.spin/logs/
+
 # env
 .env
 

CLAUDE.md

@@ -5,10 +5,10 @@
 Mocktioneer is a deterministic OpenRTB banner bidder for edge platforms. It lets
 you test client integrations (Prebid.js, Prebid Server, custom SDKs) without
 depending on third-party bidders or origin backends. Write once, deploy to
-Fastly Compute, Cloudflare Workers, or native Axum servers. The codebase is a
-Cargo workspace with 4 crates under `crates/`, a VitePress documentation site
-under `docs/`, Playwright e2e tests under `tests/playwright/`, and CI workflows
-under `.github/workflows/`.
+Fastly Compute, Cloudflare Workers, Fermyon Spin, or native Axum servers. The
+codebase is a Cargo workspace with 5 crates under `crates/`, a VitePress
+documentation site under `docs/`, Playwright e2e tests under
+`tests/playwright/`, and CI workflows under `.github/workflows/`.
 
 ## Workspace Layout
 
@@ -18,6 +18,7 @@ crates/
   mocktioneer-adapter-axum/       # Native Axum HTTP server
   mocktioneer-adapter-cloudflare/ # Cloudflare Workers bridge (wasm32-unknown-unknown)
   mocktioneer-adapter-fastly/     # Fastly Compute bridge (wasm32-wasip1)
+  mocktioneer-adapter-spin/       # Fermyon Spin bridge (wasm32-wasip2)
 docs/                             # VitePress documentation site (Node.js)
 examples/                         # curl/shell scripts for endpoint demos
 tests/playwright/                 # Playwright e2e tests (creative visibility, sizes)
@@ -64,11 +65,12 @@ faster iteration since nearly all business logic lives there.
 
 ## Compilation Targets
 
-| Adapter    | Target                   | Notes                              |
-| ---------- | ------------------------ | ---------------------------------- |
-| Fastly     | `wasm32-wasip1`          | Requires Viceroy for local testing |
-| Cloudflare | `wasm32-unknown-unknown` | Requires `wrangler` for dev/deploy |
-| Axum       | Native (host triple)     | Standard Tokio runtime             |
+| Adapter    | Target                   | Notes                                 |
+| ---------- | ------------------------ | ------------------------------------- |
+| Fastly     | `wasm32-wasip1`          | Requires Viceroy for local testing    |
+| Cloudflare | `wasm32-unknown-unknown` | Requires `wrangler` for dev/deploy    |
+| Spin       | `wasm32-wasip2`          | Requires `spin` CLI for local/deploy  |
+| Axum       | Native (host triple)     | Standard Tokio runtime                |
 
 ## Coding Conventions
 
@@ -161,7 +163,7 @@ Every PR must pass:
 1. `cargo fmt --all -- --check`
 2. `cargo clippy --workspace --all-targets --all-features -- -D warnings`
 3. `cargo test --workspace --all-targets`
-4. `cargo check --workspace --all-targets --features "fastly cloudflare"`
+4. `cargo check --workspace --all-targets --features "fastly cloudflare spin"`
 5. Playwright e2e tests (`tests/playwright/`)
 6. ESLint + Prettier on `docs/`
 
@@ -290,6 +292,7 @@ Custom commands live in `.claude/commands/`:
 | Axum adapter entry | `crates/mocktioneer-adapter-axum/src/main.rs`      |
 | Cloudflare adapter | `crates/mocktioneer-adapter-cloudflare/src/lib.rs` |
 | Fastly adapter     | `crates/mocktioneer-adapter-fastly/src/main.rs`    |
+| Spin adapter       | `crates/mocktioneer-adapter-spin/src/lib.rs`       |
 | Playwright tests   | `tests/playwright/`                                |
 | Example scripts    | `examples/`                                        |
 | CI tests           | `.github/workflows/test.yml`                       |

Cargo.toml

@@ -4,6 +4,7 @@ members = [
   "crates/mocktioneer-adapter-axum",
   "crates/mocktioneer-adapter-cloudflare",
   "crates/mocktioneer-adapter-fastly",
+  "crates/mocktioneer-adapter-spin",
 ]
 resolver = "2"
 
@@ -24,9 +25,13 @@ ed25519-dalek = "2.1"
 edgezero-adapter-axum = { git = "https://github.com/stackpop/edgezero.git", branch = "main", package = "edgezero-adapter-axum", default-features = false }
 edgezero-adapter-cloudflare = { git = "https://github.com/stackpop/edgezero.git", branch = "main", package = "edgezero-adapter-cloudflare", default-features = false }
 edgezero-adapter-fastly = { git = "https://github.com/stackpop/edgezero.git", branch = "main", package = "edgezero-adapter-fastly", default-features = false }
+edgezero-adapter-spin = { git = "https://github.com/stackpop/edgezero.git", branch = "main", package = "edgezero-adapter-spin", default-features = false }
 edgezero-cli = { git = "https://github.com/stackpop/edgezero.git", branch = "main", package = "edgezero-cli" }
 edgezero-core = { git = "https://github.com/stackpop/edgezero.git", branch = "main", package = "edgezero-core" }
 fastly = "0.11.9"
+# Keep the Spin SDK surface minimal; the adapter only uses `#[http_component]`
+# and HTTP request/response types.
+spin-sdk = { version = "5.2", default-features = false }
 futures = { version = "0.3", features = ["std", "executor"] }
 futures-util = "0.3.31"
 handlebars = "6"

crates/mocktioneer-adapter-spin/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "mocktioneer-adapter-spin"
+version = "0.1.0"
+edition = "2021"
+publish = false
+license.workspace = true
+
+[lib]
+crate-type = ["cdylib"]
+path = "src/lib.rs"
+
+[features]
+default = []
+spin = ["edgezero-adapter-spin/spin"]
+
+[dependencies]
+edgezero-adapter-spin = { workspace = true }
+edgezero-core = { workspace = true }
+mocktioneer-core = { workspace = true }
+
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+anyhow = { workspace = true }
+edgezero-adapter-spin = { workspace = true, features = ["spin"] }
+spin-sdk = { workspace = true }