allow for explicitly turning on debuginfo for docker builds

Author: maxcountryman

index.js

@@ -174,6 +174,7 @@ class RustPlugin {
     cargoPackage,
     binary,
     profile,
+    debugInfo,
     srcPath,
     cargoRegistry,
     cargoDownloads,
@@ -198,6 +199,9 @@ class RustPlugin {
       // release or dev
       customArgs.push("-e", `PROFILE=${profile}`);
     }
+    if (debugInfo) {
+      customArgs.push("-e", `DEBUGINFO=${debugInfo}`);
+    }
     if (cargoPackage != undefined) {
       if (cargoFlags) {
         cargoFlags = `${cargoFlags} -p ${cargoPackage}`;
@@ -219,7 +223,7 @@ class RustPlugin {
     ].filter((i) => i);
   }
 
-  dockerBuild(funcArgs, cargoPackage, binary, profile) {
+  dockerBuild(funcArgs, cargoPackage, binary, profile, debugInfo) {
     const cargoHome = process.env.CARGO_HOME || path.join(homedir(), ".cargo");
     const cargoRegistry = path.join(cargoHome, "registry");
     const cargoDownloads = path.join(cargoHome, "git");
@@ -230,6 +234,7 @@ class RustPlugin {
       cargoPackage,
       binary,
       profile,
+      debugInfo,
       this.srcPath,
       cargoRegistry,
       cargoDownloads,
@@ -280,10 +285,11 @@ class RustPlugin {
 
       this.serverless.cli.log(`Building Rust ${func.handler} func...`);
       let profile = (func.rust || {}).profile || this.custom.profile;
+      let debugInfo = (func.rust || {}).debugInfo || this.custom.debugInfo;
 
       const res = this.buildLocally(func)
         ? this.localBuild(func.rust, cargoPackage, binary, profile)
-        : this.dockerBuild(func.rust, cargoPackage, binary, profile);
+        : this.dockerBuild(func.rust, cargoPackage, binary, profile, debugInfo);
       if (res.error || res.status > 0) {
         this.serverless.cli.log(
           `Rust build encountered an error: ${res.error} ${res.status}.`

tests/unit/index.test.js

@@ -227,6 +227,7 @@ describe("RustPlugin", () => {
         "foo",
         "bar",
         "release",
+        false,
         "source_path",
         "cargo_registry",
         "cargo_downloads",
@@ -252,4 +253,40 @@ describe("RustPlugin", () => {
       ]
     );
   });
+
+  it("configures expected dockerBuildArgs with debugInfo", () => {
+    assert.deepEqual(
+      plugin.dockerBuildArgs(
+        {},
+        "foo",
+        "bar",
+        "release",
+        true,
+        "source_path",
+        "cargo_registry",
+        "cargo_downloads",
+        {}
+      ),
+      [
+        "run",
+        "--rm",
+        "-t",
+        "-e",
+        "BIN=bar",
+        "-v",
+        "source_path:/code",
+        "-v",
+        "cargo_registry:/root/.cargo/registry",
+        "-v",
+        "cargo_downloads:/root/.cargo/git",
+        "-e",
+        "PROFILE=release",
+        "-e",
+        "DEBUGINFO=true",
+        "-e",
+        "CARGO_FLAGS=--features foo -p foo",
+        "notsoftprops/lambda-rust:latest",
+      ]
+    );
+  });
 });