Added warmup workflow

.github/actions/build/action.yaml

@@ -0,0 +1,24 @@
+name: Build
+description: Build YDB SDK
+
+runs:
+  using: "composite"
+  steps:
+    - name: Configure
+      shell: bash
+      run: |
+        mkdir -p ../build
+        cd ../build
+        rm -rf *
+        cmake -G Ninja -DCMAKE_BUILD_TYPE=Release \
+          -DCCACHE_PATH=/usr/local/bin/ccache \
+          -DCMAKE_TOOLCHAIN_FILE=../ydb-cpp-sdk/clang.toolchain \
+          ../ydb-cpp-sdk
+    - name: Build
+      shell: bash
+      run: |
+        ccache -z
+        export CCACHE_DIR=`realpath ../.ccache`
+        cd ../build
+        ninja examples/all client/all
+        ccache -s

.github/actions/prepare_vm/action.yaml

@@ -0,0 +1,23 @@
+name: Prepare VM for YDB SDK build
+description: Install required packages
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install dependencies
+      shell: bash
+      run: |
+        sudo apt-get -y install git cmake ninja-build libidn11-dev ragel yasm
+        wget https://apt.llvm.org/llvm.sh
+        chmod u+x llvm.sh
+        sudo ./llvm.sh 16
+        wget https://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.15.tar.gz
+        tar -xvzf libiconv-1.15.tar.gz
+        cd libiconv-1.15
+        ./configure --prefix=/usr/local
+        sudo make
+        sudo make install
+        cd ..
+        (V=4.8.1; curl -L https://github.com/ccache/ccache/releases/download/v${V}/ccache-${V}-linux-x86_64.tar.xz | \
+        sudo tar -xJ -C /usr/local/bin/ --strip-components=1 --no-same-owner ccache-${V}-linux-x86_64/ccache)
+        sudo rm -rf llvm.sh libiconv-1.15

.github/workflows/pr_check.yaml

@@ -3,43 +3,25 @@ name: PR-check
 on:
   push:
     branches:
-      - master
+      - main
       - release-*
   pull_request:
-  workflow_dispatch:
-  schedule:
-    - cron: "0 12 * * *"
 
 jobs:
   main:
     name: Build YDB C++ SDK
     runs-on: ubuntu-22.04
     steps:
     - name: Install dependencies
-      shell: bash
-      run: |
-        sudo apt-get -y install git cmake ninja-build libidn11-dev ragel yasm
-        wget https://apt.llvm.org/llvm.sh
-        chmod u+x llvm.sh
-        sudo ./llvm.sh 16
-        wget https://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.15.tar.gz
-        tar -xvzf libiconv-1.15.tar.gz
-        cd libiconv-1.15
-        ./configure --prefix=/usr/local
-        sudo make
-        sudo make install
-        cd ..
-        (V=4.8.1; curl -L https://github.com/ccache/ccache/releases/download/v${V}/ccache-${V}-linux-x86_64.tar.xz | \
-        sudo tar -xJ -C /usr/local/bin/ --strip-components=1 --no-same-owner ccache-${V}-linux-x86_64/ccache)
-        sudo rm -rf llvm.sh libiconv-1.15
+      uses: ./.github/actions/prepare_vm
     - name: Prepare ccache timestamp
       id: ccache_cache_timestamp
       shell: cmake -P {0}
       run: |
         string(TIMESTAMP current_date "%Y-%m-%d-%H;%M;%S" UTC)
         message("::set-output name=timestamp::${current_date}")
-    - name: Cache files
-      uses: actions/[email protected]
+    - name: Restore cache files
+      uses: actions/restore@v4
       with:
         path: ../.ccache
         key: ubuntu-22.04-ccache-${{steps.ccache_cache_timestamp.outputs.timestamp}}
@@ -53,22 +35,5 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v3
       if: github.event.pull_request.head.sha == ''
-    - name: Configure
-      shell: bash
-      run: |
-        mkdir -p ../build
-        cd ../build
-        rm -rf *
-        cmake -G Ninja -DCMAKE_BUILD_TYPE=Release \
-          -DCCACHE_PATH=/usr/local/bin/ccache \
-          -DCMAKE_TOOLCHAIN_FILE=../ydb-cpp-sdk/clang.toolchain \
-          ../ydb-cpp-sdk
     - name: Build
-      shell: bash
-      run: |
-        ccache -z
-        export CCACHE_DIR=`realpath ../.ccache`
-        cd ../build
-        ninja examples/all client/all
-        ccache -s
-  
+      uses: ./.github/actions/build

.github/workflows/warmup_cache.yaml

@@ -0,0 +1,37 @@
+name: Warm up cache
+
+on:  
+  schedule:
+    - cron: "0 12 * * *"
+  workflow_dispatch:
+
+jobs:
+  main:
+    name: Build YDB C++ SDK and cache artifacts
+    runs-on: ubuntu-22.04
+    steps:
+    - name: Install dependencies
+      uses: ./.github/actions/prepare_vm
+    - name: Prepare ccache timestamp
+      id: ccache_cache_timestamp
+      shell: cmake -P {0}
+      run: |
+        string(TIMESTAMP current_date "%Y-%m-%d-%H;%M;%S" UTC)
+        message("::set-output name=timestamp::${current_date}")
+    - name: Cache files
+      uses: actions/cache@v4
+      with:
+        path: ../.ccache
+        key: ubuntu-22.04-ccache-${{steps.ccache_cache_timestamp.outputs.timestamp}}
+        restore-keys: |
+          ubuntu-22.04-ccache-
+    - name: Checkout PR
+      uses: actions/checkout@v3
+      if: github.event.pull_request.head.sha != ''
+      with:
+        ref: ${{ github.event.pull_request.head.sha }}
+    - name: Checkout
+      uses: actions/checkout@v3
+      if: github.event.pull_request.head.sha == ''
+    - name: Build
+      uses: ./.github/actions/build