Modify rust workflow to support self hosted runner execution + create…

… wake up script for runner (summa-dev#199)

.github/scripts/wakeup.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+set -e
+
+runner="i-0e04845bff4576909"
+
+while true; do
+  runner_status=$(aws ec2 describe-instances --instance-ids $runner --query "Reservations[*].Instances[*].State.[Name]" --output text)
+  if [ $runner_status = "stopped" ]; then
+    aws ec2 start-instances --instance-ids $runner
+    break
+  elif [ $runner_status = "running" ]; then
+    break
+  else
+    sleep 5
+  fi
+done
+
+exit 0

.github/workflows/rust.yml

@@ -6,16 +6,43 @@ on:
   pull_request:
     branches: ["*"]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  build:
+  wakeup:
     runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: read
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Configure AWS Credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          role-to-assume: arn:aws:iam::490752553772:role/summa-solvency-ec2-slc
+          role-duration-seconds: 900
+          aws-region: us-west-2
+
+      - name: Wakeup runner
+        run: .github/scripts/wakeup.sh 
+
+  build:
+    runs-on: [summa-solvency-runner]
+    needs: [wakeup]
 
     steps:
       - uses: actions/checkout@v3
 
+      - name: Set Environment
+        run: echo "PATH=/home/ubuntu/.cargo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" >> "$GITHUB_ENV"
+
       - name: Install solc
         run: (hash svm 2>/dev/null || cargo install --version 0.2.23 svm-rs) && svm install 0.8.20 && solc --version
 
@@ -41,4 +68,4 @@ jobs:
         run: |
           cd backend
           cargo run --release --example summa_solvency_flow
-  
+