Allow setting a title for the created check run (#11)

* Allow setting a title for the created check run

This change allows a workflow to contain multiple clippy-check
invocations that execute in parallel, by giving each run a unique name.

Previously, any clippy invocations running in parallel would race
against each other, and annotations would only reported for the first to
hit `createCheck(...)`.

README.md

@@ -64,11 +64,14 @@ jobs:
 | `toolchain` |          | Rust toolchain to use; override or system default toolchain will be used if omitted                                                    | string |         |
 | `args`      |          | Arguments for the `cargo clippy` command                                                                                               | string |         |
 | `use-cross` |          | Use [`cross`](https://github.com/rust-embedded/cross) instead of `cargo`                                                               | bool   | false   |
-
+| `name`      |          | Name of the created GitHub check. If running this action multiple times, each run must have a unique name.                             | string | clippy  |
 
 For extra details about the `toolchain`, `args` and `use-cross` inputs,
 see [`cargo` Action](https://github.com/actions-rs/cargo#inputs) documentation.
 
+**NOTE**: if your workflow contains multiple instances of the `clippy-check` action you will need to give each invocation a unique name, using the `name` property described above.
+Check runs must have a unique name, and this prevents a later check run overriding a previous one within the same workflow.
+
 ## Limitations
 
 Due to [token permissions](https://help.github.com/en/articles/virtual-environments-for-github-actions#token-permissions),

action.yml

@@ -18,6 +18,9 @@ inputs:
   use-cross:
     description: Use cross instead of cargo
     default: false
+  name:
+    description: Display name of the created GitHub check. Must be unique across several actions-rs/clippy-check invocations.
+    default: clippy
 
 runs:
   using: 'node12'

src/input.ts

@@ -12,6 +12,7 @@ export interface Input {
     toolchain?: string,
     args: string[],
     useCross: boolean,
+    name: string,
 }
 
 export function get(): Input {
@@ -21,11 +22,13 @@ export function get(): Input {
         toolchain = toolchain.slice(1);
     }
     const useCross = input.getInputBool('use-cross');
+    const name = input.getInput('name');
 
     return {
         token: input.getInput('token', {required: true}),
         args: args,
         useCross: useCross,
-        toolchain: toolchain || undefined
+        toolchain: toolchain || undefined,
+        name
     }
 }

src/main.ts

@@ -67,7 +67,7 @@ export async function run(actionInput: input.Input): Promise<void> {
 
     await runner.executeCheck({
         token: actionInput.token,
-        name: 'clippy',
+        name: actionInput.name,
         owner: github.context.repo.owner,
         repo: github.context.repo.repo,
         head_sha: github.context.sha,