[pitboss] phase 21: Track M.3 — ScheduledJob + GraphQLResolver + WebSocket + Middleware + Migration

src/dynamic/framework/adapters/graphql_apollo.rs

@@ -0,0 +1,112 @@
+//! Phase 21 (Track M.3) — Apollo GraphQL resolver adapter (JS).
+//!
+//! Fires when the surrounding source imports `@apollo/server` / the
+//! legacy `apollo-server` / `apollo-server-express` package, or the
+//! function body sits inside a `Query` / `Mutation` resolver map.
+
+use crate::dynamic::framework::{FrameworkAdapter, FrameworkBinding};
+use crate::evidence::EntryKind;
+use crate::summary::FuncSummary;
+use crate::symbol::Lang;
+
+pub struct GraphqlApolloAdapter;
+
+const ADAPTER_NAME: &str = "graphql-apollo";
+
+fn callee_is_apollo(name: &str) -> bool {
+    let last = name.rsplit_once('.').map(|(_, s)| s).unwrap_or(name);
+    matches!(
+        last,
+        "ApolloServer" | "startStandaloneServer" | "gql" | "applyMiddleware" | "expressMiddleware"
+    )
+}
+
+fn source_imports_apollo(file_bytes: &[u8]) -> bool {
+    const NEEDLES: &[&[u8]] = &[
+        b"@apollo/server",
+        b"apollo-server",
+        b"require('apollo-server')",
+        b"require(\"apollo-server\")",
+        b"from 'apollo-server",
+        b"from \"apollo-server",
+        b"new ApolloServer",
+        b"const resolvers",
+    ];
+    NEEDLES
+        .iter()
+        .any(|n| file_bytes.windows(n.len()).any(|w| w == *n))
+}
+
+fn extract_resolver(summary: &FuncSummary) -> (String, String) {
+    // Best-effort: split a fully-qualified name like `Query.user` into
+    // `("Query", "user")`.  Falls back to ("Query", name) so the
+    // binding always carries some type_name + field.
+    if let Some((parent, field)) = summary.name.rsplit_once('.') {
+        return (parent.to_owned(), field.to_owned());
+    }
+    ("Query".to_owned(), summary.name.clone())
+}
+
+impl FrameworkAdapter for GraphqlApolloAdapter {
+    fn name(&self) -> &'static str {
+        ADAPTER_NAME
+    }
+
+    fn lang(&self) -> Lang {
+        Lang::JavaScript
+    }
+
+    fn detect(
+        &self,
+        summary: &FuncSummary,
+        _ast: tree_sitter::Node<'_>,
+        file_bytes: &[u8],
+    ) -> Option<FrameworkBinding> {
+        let matches_call = super::any_callee_matches(summary, callee_is_apollo);
+        let matches_source = source_imports_apollo(file_bytes);
+        if matches_call || matches_source {
+            let (type_name, field) = extract_resolver(summary);
+            Some(FrameworkBinding {
+                adapter: ADAPTER_NAME.to_owned(),
+                kind: EntryKind::GraphQLResolver { type_name, field },
+                route: None,
+                request_params: Vec::new(),
+                response_writer: None,
+                middleware: Vec::new(),
+            })
+        } else {
+            None
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn parse_js(src: &[u8]) -> tree_sitter::Tree {
+        let mut parser = tree_sitter::Parser::new();
+        let lang = tree_sitter::Language::from(tree_sitter_javascript::LANGUAGE);
+        parser.set_language(&lang).unwrap();
+        parser.parse(src, None).unwrap()
+    }
+
+    #[test]
+    fn fires_on_apollo_resolver() {
+        let src: &[u8] = b"const { ApolloServer } = require('@apollo/server');\n\
+            const resolvers = { Query: { user: (_, { id }) => id } };\n";
+        let tree = parse_js(src);
+        let summary = FuncSummary {
+            name: "user".into(),
+            ..Default::default()
+        };
+        let binding = GraphqlApolloAdapter
+            .detect(&summary, tree.root_node(), src)
+            .expect("apollo binds");
+        assert_eq!(binding.adapter, "graphql-apollo");
+        if let EntryKind::GraphQLResolver { type_name, field } = binding.kind {
+            assert_eq!(type_name, "Query");
+            assert_eq!(field, "user");
+        }
+    }
+}