feat(KeySetCache): use a artifacts to store the cache

.github/workflows/continuous-integration.yml

@@ -45,13 +45,12 @@ jobs:
         with:
           submodules: recursive
 
-      - name: "KeySetCache"
+      - name: Download KeySetCache
         if: ${{ matrix.compiler == 'gcc7' }}
-        uses: actions/cache@v2
-        with:
-          path: ${{ github.workspace }}/KeySetCache
-          # actions/cache does not permit to update a cache entry
-          key: Linux-KeySetCache-2022-02-28
+        continue-on-error: true
+        run: |
+          cd compiler
+          GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }} make keysetcache_ci_populated
 
       - name: Build and test compiler
         if: ${{ matrix.compiler == 'gcc7' }}
@@ -62,7 +61,9 @@ jobs:
           image: ${{ env.DOCKER_IMAGE_TEST_GCC7 }}
           username: ${{ secrets.GHCR_LOGIN }}
           password: ${{ secrets.GHCR_PASSWORD }}
-          options: -v ${{ github.workspace }}/compiler:/compiler -v ${{ github.workspace }}/KeySetCache:/tmp/KeySetCache
+          options: >-
+            -v ${{ github.workspace }}/compiler:/compiler
+            -v ${{ github.workspace }}/KeySetCache:/tmp/KeySetCache
           shell: bash
           run: |
             set -e
@@ -77,6 +78,21 @@ jobs:
             ccache -s
             chmod -R ugo+rwx /tmp/KeySetCache
 
+      - name: Upload KeySetCache
+        if: ${{ matrix.compiler == 'gcc7' }} && github.ref == 'refs/heads/master'
+        uses: actions/upload-artifact@v3
+        with:
+          name: KeySetCache
+          path: KeySetCache
+          retention-days: 90
+
+      - name: Cleanup Old KeySetCache
+        uses: Remagpie/gha-remove-artifact@v1
+        if: ${{ matrix.compiler == 'gcc7' }} && github.ref == 'refs/heads/master'
+        with:
+          only-name: KeySetCache
+          max-count: 1
+
       - name: Build compiler
         if: ${{ matrix.compiler == 'latest' }}
         id: build-compiler-latest
@@ -177,13 +193,11 @@ jobs:
         id: tmpdir-path
         run: echo "::set-output name=TMPDIR_PATH::`echo $TMPDIR`"
 
-      - name: KeySetCache
-        if: github.event_name == 'push'
-        uses: actions/cache@v2
-        with:
-          path: ${{ steps.tmpdir-path.outputs.TMPDIR_PATH }}/KeySetCache
-          # The cache is not specific to Linux and can be used on MacOS
-          key: Linux-KeySetCache-2022-02-28
+      - name: Download KeySetCache
+        continue-on-error: true
+        run: |
+          cd compiler
+          GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }} make keysetcache_ci_populated
 
       # We do run test-check as part of the build, as they aren't that costly
       # and will at least give minimum confidence that the compiler works in PRs
@@ -216,12 +230,11 @@ jobs:
         with:
           submodules: recursive
 
-      - name: "KeySetCache"
-        uses: actions/cache@v2
-        with:
-          path: ${{ github.workspace }}/KeySetCache
-          # actions/cache does not permit to update a cache entry
-          key: Linux-KeySetCache-2022-02-28
+      - name: Download KeySetCache
+        continue-on-error: true
+        run: |
+          cd compiler
+          GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }} make keysetcache_ci_populated
 
       - name: Build and test compiler (dataflow)
         uses: addnab/docker-run-action@v3
@@ -230,7 +243,9 @@ jobs:
           image: ${{ env.DOCKER_IMAGE_TEST_DF }}
           username: ${{ secrets.GHCR_LOGIN }}
           password: ${{ secrets.GHCR_PASSWORD }}
-          options: -v ${{ github.workspace }}/compiler:/compiler -v ${{ github.workspace }}/KeySetCache:/tmp/KeySetCache
+          options: >-
+            -v ${{ github.workspace }}/compiler:/compiler
+            -v ${{ github.workspace }}/KeySetCache:/tmp/KeySetCache
           shell: bash
           run: |
             set -e

builders/Dockerfile.keysetcache-env

@@ -0,0 +1,2 @@
+FROM alpine:latest
+COPY KeySetCache /KeySetCache

compiler/Makefile

@@ -7,6 +7,9 @@ CXX_COMPILER=
 
 EXTERNAL_HEADERS=include/boost-single-header/outcome.hpp
 
+KEYSETCACHEDEV=/tmp/KeySetCache
+KEYSETCACHECI=../KeySetCache
+
 export PATH := $(BUILD_DIR)/bin:$(PATH)
 
 ifeq ($(shell which ccache),)
@@ -91,7 +94,23 @@ test: test-check test-end-to-end-jit test-python support-unit-test testlib-unit-
 
 test-dataflow: test-end-to-end-jit-dfr test-end-to-end-jit-auto-parallelization
 
-# install/uninstall
+GITHUB_URL=https://api.github.com/repos/zama-ai/concrete-compiler-internal
+GITHUB_URL_LIST_ARTIFACTS="${GITHUB_URL}/actions/artifacts"
+CURL=curl -H"Accept: application/vnd.github.v3+json" -H"authorization: Bearer ${GITHUB_TOKEN}"
+keysetcache.zip: REDIRECT_URL = $(shell ${CURL} -s ${GITHUB_URL_LIST_ARTIFACTS} | grep -A 10 KeySetCache | grep archive_download_url | head -n 1 | grep -o 'http[^"]\+')
+keysetcache.zip:
+	${CURL} --location -o keysetcache.zip ${REDIRECT_URL}
+	du -h keysetcache.zip
+
+keysetcache_ci_populated: keysetcache.zip
+	unzip keysetcache.zip -d ${KEYSETCACHECI}
+	du -sh ${KEYSETCACHECI}
+	rm keysetcache.zip
+
+keysetcache_populated: keysetcache.zip
+	unzip keysetcache.zip -d ${KEYSETCACHEDEV}
+	du -sh ${KEYSETCACHEDEV}
+	rm keysetcache.zip
 
 install: install_runtime_lib
 

compiler/lib/ClientLib/KeySetCache.cpp

@@ -13,6 +13,7 @@
 #include <fstream>
 #include <sstream>
 #include <string>
+#include <utime.h>
 
 extern "C" {
 #include "concrete-ffi.h"
@@ -78,6 +79,10 @@ KeySetCache::loadKeys(ClientParameters &params, uint64_t seed_msb,
   // TODO: text dump of all parameter in /hash
   auto key_set = std::make_unique<KeySet>();
 
+  // Mark the folder as recently use.
+  // e.g. so the CI can do some cleanup of unused keys.
+  utime(folderPath.c_str(), nullptr);
+
   std::map<LweSecretKeyID, std::pair<LweSecretKeyParam, LweSecretKey_u64 *>>
       secretKeys;
   std::map<LweSecretKeyID, std::pair<BootstrapKeyParam, LweBootstrapKey_u64 *>>