chore(examples): Separate examples from the workspace and check them in CI

.github/actions/diffs/action.yml

@@ -7,9 +7,21 @@ outputs:
   isRust:
     description: True when changes happened to the Rust code
     value: "${{ steps.diff.outputs.isRust }}"
+  isRustExample:
+    description: True when changes happened to the Rust example code
+    value: "${{ steps.diff.outputs.isRustExample }}"
+  isRpc:
+    description: True when changes happened to the RPC code
+    value: "${{ steps.diff.outputs.isRpc }}"
+  isPgIntegration:
+    description: True when changes happened to the PG integration code
+    value: "${{ steps.diff.outputs.isPgIntegration }}"
   isMove:
     description: True when changes happened to the Move code
     value: "${{ steps.diff.outputs.isMove }}"
+  isRosetta:
+    description: True when changes happened to the rosetta code
+    value: "${{ steps.diff.outputs.isRosetta }}"
   isExternalCrates:
     description: True when changes happened in external crates
     value: "${{ steps.diff.outputs.isExternalCrates }}"
@@ -31,7 +43,6 @@ runs:
             - "crates/**"
             - "external-crates/**"
             - "iota-execution/**"
-            - "docs/examples/rust/**"
             - ".github/workflows/hierarchy.yml"
             - ".github/workflows/codecov.yml"
             - ".github/workflows/_rust.yml"
@@ -44,6 +55,10 @@ runs:
             - "Cargo.lock"
             - ".config/nextest.toml"
             - "rust-toolchain.toml"
+          isRustExample:
+            - "examples/custom-indexer/rust/**"
+            - "examples/tic-tac-toe/cli/**"
+            - "docs/examples/rust/**"
           isRpc:
             - "crates/iota-json-rpc/**"
             - "crates/iota-json-rpc-types/**"

.github/workflows/_rust.yml

@@ -5,6 +5,8 @@ on:
     inputs:
       isRust:
         type: boolean
+      isRustExample:
+        type: boolean
       isPgIntegration:
         type: boolean
 
@@ -36,6 +38,7 @@ jobs:
     uses: ./.github/workflows/_rust_lints.yml
     with:
       isRust: ${{ inputs.isRust }}
+      isRustExample: ${{ inputs.isRustExample }}
 
   deny:
     uses: ./.github/workflows/_cargo_deny.yml

.github/workflows/_rust_lints.yml

@@ -5,6 +5,8 @@ on:
     inputs:
       isRust:
         type: boolean
+      isRustExample:
+        type: boolean
 
 concurrency:
   group: rust-lints-${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
@@ -45,6 +47,26 @@ jobs:
             exit 1    # Fail the workflow
           fi
 
+  examples:
+    if: (!cancelled() && inputs.isRustExample)
+    runs-on: [self-hosted]
+    steps:
+      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
+      - name: Check examples
+        # Set the globstar opt here to enable recursive glob.
+        run: |
+          shopt -s globstar
+          for manifest in ./**/examples/**/Cargo.toml; do
+              echo "Checking format for $manifest"
+              cargo +nightly ci-fmt --manifest-path $manifest
+
+              echo "Clippy linting for $manifest"
+              cargo clippy --manifest-path $manifest --all-features
+
+              echo "Checking unused dependencies of $manifest"
+              cargo +nightly ci-udeps --manifest-path $manifest
+          done
+
   clippy:
     if: (!cancelled() && !failure() && inputs.isRust)
     needs:

.github/workflows/hierarchy.yml

@@ -13,12 +13,13 @@ on:
 
 jobs:
   diff:
-    runs-on: [self-hosted]
+    runs-on: [ubuntu-latest]
     concurrency:
       group: diff-${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
       cancel-in-progress: ${{ github.ref != 'refs/heads/develop' }}
     outputs:
       isRust: ${{ steps.diff.outputs.isRust }}
+      isRustExample: ${{ steps.diff.outputs.isRustExample }}
       isRpc: ${{ steps.diff.outputs.isRpc }}
       isPgIntegration: ${{ steps.diff.outputs.isPgIntegration }}
       isMove: ${{ steps.diff.outputs.isMove }}
@@ -108,6 +109,7 @@ jobs:
     secrets: inherit
     with:
       isRust: ${{ needs.diff.outputs.isRust == 'true' }}
+      isRustExample: ${{ needs.diff.outputs.isRustExample == 'true' }}
       isPgIntegration: ${{ needs.diff.outputs.isPgIntegration == 'true' }}
 
   rosetta: