Fix perf-runner issues

.github/workflows/performance.yaml

@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
     inputs:
       benchmark:
-        description: "JMH benchmark regex"
+        description: "JMH benchmark regex, optionally followed by JMH arguments"
         required: true
         default: ".*"
 
@@ -23,8 +23,38 @@ jobs:
           ./gradlew :mapsmith-benchmarks:jmh \
             --args="${{ inputs.benchmark }} -rf json -rff $GITHUB_WORKSPACE/mapsmith-benchmarks/build/benchmarks/jmh-results.json"
 
+      - name: Add EC2 metadata to benchmark report
+        env:
+          RESULTS_DIR: ${{ github.workspace }}/mapsmith-benchmarks/build/benchmarks
+          IMDS_BASE_URL: http://169.254.169.254/latest
+        run: |
+          imds_token="$(curl --fail --silent --show-error --request PUT \
+            --header 'X-aws-ec2-metadata-token-ttl-seconds: 60' \
+            "$IMDS_BASE_URL/api/token")"
+          imds_get() {
+            curl --fail --silent --show-error \
+              --header "X-aws-ec2-metadata-token: $imds_token" \
+              "$IMDS_BASE_URL/meta-data/$1"
+          }
+
+          jq -n \
+            --arg instance_id "$(imds_get instance-id)" \
+            --arg instance_type "$(imds_get instance-type)" \
+            --arg availability_zone "$(imds_get placement/availability-zone)" \
+            --arg region "$(imds_get placement/region)" \
+            --slurpfile benchmarks "$RESULTS_DIR/jmh-results.json" \
+            '{
+              ec2: {
+                instance_id: $instance_id,
+                instance_type: $instance_type,
+                availability_zone: $availability_zone,
+                region: $region
+              },
+              benchmarks: $benchmarks[0]
+            }' > "$RESULTS_DIR/benchmark-report.json"
+
       - name: Upload JMH results
         uses: actions/upload-artifact@v4
         with:
           name: jmh-results
-          path: mapsmith-benchmarks/build/benchmarks/jmh-results.json
+          path: mapsmith-benchmarks/build/benchmarks/

infra/perf-runner/user-data.sh.tftpl

@@ -10,7 +10,7 @@ id -u runner >/dev/null 2>&1 || useradd --create-home --shell /bin/bash runner
 install -d -o runner -g runner /opt/actions-runner
 cd /opt/actions-runner
 
-runner_version="$$(curl --fail --silent --show-error --location \
+runner_version="$(curl --fail --silent --show-error --location \
   https://api.github.com/repos/actions/runner/releases/latest | jq -r '.tag_name')"
 curl --fail --silent --show-error --location \
   --output actions-runner.tar.gz \
@@ -23,7 +23,7 @@ chown -R runner:runner /opt/actions-runner
 runuser -u runner -- ./config.sh --unattended \
   --url "https://github.com/${repository}" \
   --token '${runner_token}' \
-  --name "$$(hostname)" \
+  --name "$(hostname)" \
   --labels "mapsmith-perf" \
   --replace