Cache vcpkg dependency (#13)

Author: BrennanConroy

.azure/default-build.yml

@@ -22,6 +22,13 @@ jobs:
   steps:
   - checkout: self
     clean: true
+
+  - task: CacheBeta@1
+    inputs:
+      key: vcpkg | ${{ parameters.agentOs }} | azure-pipelines.yml
+      path: ./submodules/vcpkg/installed
+      cacheHitVar: CACHE_RESTORED
+    displayName: Cache vcpkg packages
 
   - ${{ parameters.beforeBuild }}
 

azure-pipelines.yml

@@ -8,6 +8,7 @@ jobs:
     cMakeRunArgs: '-A x64'
     beforeBuild:
     - powershell: "& vcpkg.exe install cpprestsdk:x64-windows --vcpkg-root ./submodules/vcpkg"
+      condition: ne(variables.CACHE_RESTORED, 'true')
       displayName: vcpkg install dependencies
 
 - template: .azure/default-build.yml
@@ -21,11 +22,13 @@ jobs:
     - bash: "./submodules/vcpkg/bootstrap-vcpkg.sh"
       displayName: Bootstrap vcpkg
     - bash: "./submodules/vcpkg/vcpkg install cpprestsdk"
+      condition: ne(variables.CACHE_RESTORED, 'true')
       displayName: vcpkg install dependencies
 
 - template: .azure/default-build.yml
   parameters:
     agentOs: Linux
     beforeBuild:
     - script: sudo vcpkg install cpprestsdk boost-system boost-chrono boost-thread --vcpkg-root ./submodules/vcpkg
+      condition: ne(variables.CACHE_RESTORED, 'true')
       displayName: vcpkg install dependencies