feat(ICRC_Ledger): FI-1600: Download the latest ICRC ledger release i…

…nstead of tip of master (#3538)

Modify the helper script to download the latest ICRC ledger release,
rather than the WASM built from the tip of the master branch.

rs/rosetta-api/scripts/download_latest_icrc1_ledger.sh

@@ -1,38 +1,74 @@
 #!/usr/bin/env bash
-
 set -uo pipefail
-#set -x
-
-COMMITS=$(curl -sLf -H "Accept: application/vnd.github+json" \
-    -H "X-GitHub-Api-Version: 2022-11-28" \
-    "https://api.github.com/repos/dfinity/ic/commits?per_page=100" \
-    | jq '.[].sha' | tr -d \")
 
-if [ "$?" -ne "0" ]; then
-    echo >&2 "Unable to fetch the commits from dfinity/ic. Please try again"
-    exit 1
-fi
+### Configuration
+RELEASE_TAG_PREFIX=ledger-suite-icrc
 
-for COMMIT in $COMMITS; do
+### Download a specific release
+## Download the ICRC ledger WASM and did files for a specific release. The files are downloaded
+## from the github release page for the given release.
+download_release() {
+    RELEASE=$1
     STATUS_CODE=$(curl -s -o /dev/null -w "%{http_code}" -L --head \
-        "https://download.dfinity.systems/ic/$COMMIT/canisters/ic-icrc1-ledger.wasm.gz")
+        "https://github.com/dfinity/ic/releases/download/${RELEASE}/ic-icrc1-ledger.wasm.gz")
     if (($STATUS_CODE >= 200)) && (($STATUS_CODE < 300)); then
-        echo "Found artifacts for commit $COMMIT. Downloading icrc1_ledger.did and icrc1_ledger.wasm.gz"
-        curl -sLf "https://raw.githubusercontent.com/dfinity/ic/$COMMIT/rs/ledger_suite/icrc1/ledger/ledger.did" \
+        echo "Found artifacts for release $RELEASE. Downloading icrc1_ledger.did and icrc1_ledger.wasm.gz"
+        curl -sLf "https://github.com/dfinity/ic/releases/download/${RELEASE}/ledger.did" \
             -o icrc1_ledger.did
         if [ "$?" -ne "0" ]; then
             echo >&2 "Unable to download the icrc1 ledger did file. Please try again"
             exit 2
         fi
-        curl -sLf "https://download.dfinity.systems/ic/$COMMIT/canisters/ic-icrc1-ledger.wasm.gz" \
+        curl -sLf "https://github.com/dfinity/ic/releases/download/${RELEASE}/ic-icrc1-ledger.wasm.gz" \
             -o icrc1_ledger.wasm.gz
         if [ "$?" -ne "0" ]; then
             echo >&2 "Unable to download the icrc1 ledger wasm file. Please try again"
             exit 3
         fi
         exit 0
     fi
-done
+}
+
+### Find and download the latest ICRC ledger WASM and did file
+## List the releases from the repository, looking for the most recent release where the corresponding
+## tag starts with the expected prefix. Retrieves releases one page at a time, stopping if no release
+## was found in some predefined maximum number of pages. Once a release is found, download the ledger
+## WASM and did files.
+find_and_download_release() {
+    PAGE=1
+    ITEMS_PER_PAGE=100
+    MAX_PAGES=10
+    while true; do
+        ITEM=0
+        # Unauthenticated requests are rate limited (per IP address) to 60 requests/hr
+        # https://docs.github.com/en/rest/using-the-rest-api/rate-limits-for-the-rest-api?apiVersion=2022-11-28#primary-rate-limit-for-unauthenticated-users
+        REL_JSON=$(curl -L \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/dfinity/ic/releases\?per_page\=${ITEMS_PER_PAGE}\&page\=${PAGE})
+        if [ "$?" -ne "0" ]; then
+            echo >&2 "Unable to fetch the releases from dfinity/ic."
+            exit 1
+        fi
+        while [ ${ITEM} -lt ${ITEMS_PER_PAGE} ]; do
+            RELEASE=$(echo ${REL_JSON} | jq ".[${ITEM}].tag_name" | tr -d '"')
+            if [ "$?" -ne "0" ]; then
+                echo >&2 "Error parsing release from response."
+                exit 1
+            fi
+            if [[ ${RELEASE} == ${RELEASE_TAG_PREFIX}* ]]; then
+                download_release "${RELEASE}"
+                break
+            else
+                ITEM=$((ITEM + 1))
+            fi
+        done
+        PAGE=$((PAGE + 1))
+        if [ ${PAGE} -gt ${MAX_PAGES} ]; then
+            echo "No ${RELEASE_TAG_PREFIX} release found in the first ${MAX_PAGES} with ${ITEMS_PER_PAGE} items per page, aborting."
+            exit 1
+        fi
+    done
+}
 
-echo "No commits with artifacts found"
-exit 4
+find_and_download_release