From aa6d8bd41346fd0d19cab5f68922880e8010c4b6 Mon Sep 17 00:00:00 2001
From: Ashish Kumar Singh <ashishsingh@newrelic.com>
Date: Mon, 9 Jun 2025 17:56:36 +0530
Subject: [PATCH] chore: get the latest agent version from tag to dowload the
 agent

Get the latest tag from the git repo and download the respective agent version from the download url to build and publish the layer
---
 dotnet/publish-layers.sh | 28 +++++++++++++++++++---------
 1 file changed, 19 insertions(+), 9 deletions(-)

diff --git a/dotnet/publish-layers.sh b/dotnet/publish-layers.sh
index 6111775f..66984540 100755
--- a/dotnet/publish-layers.sh
+++ b/dotnet/publish-layers.sh
@@ -10,7 +10,8 @@ DOTNET_DIST_X86_64=$DIST_DIR/dotnet.x86_64.zip
 
 AGENT_DIST_ZIP=agent.zip
 NEWRELIC_AGENT_VERSION=""
-VERSION_REGEX="v?([0-9]+\.[0-9]+\.[0-9]+)\.[0-9]+_dotnet"
+VERSION_REGEX='^v([0-9]+\.[0-9]+\.[0-9]+)$'
+GITHUB_REF_URL="https://api.github.com/repos/newrelic/newrelic-dotnet-agent/releases/latest"
 
 source ../libBuild.sh
 
@@ -72,17 +73,26 @@ function publish-dotnet-arm64 {
 function get_agent {
     arch=$1
 
-    # Determine agent version from git tag
-    if [[ -z "${GITHUB_REF_NAME}" ]]; then
-        echo "Unable to determine agent version, GITHUB_REF_NAME environment variable not set." >&2
-        exit 1;
-    elif [[ "${GITHUB_REF_NAME}" =~ ${VERSION_REGEX} ]]; then
-        # Extract the version number from the GITHUB_REF_NAME using regex
+    if command -v jq >/dev/null 2>&1; then
+        latest_tag=$(curl -s ${GITHUB_REF_URL} | jq -r '.tag_name')
+    else
+        latest_tag=$(curl -s ${GITHUB_REF_URL} | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
+    fi
+    
+    if [[ -z "${latest_tag}" || "${latest_tag}" == "null" ]]; then
+        echo "Unable to fetch latest tag from GitHub API." >&2
+        exit 1
+    fi
+    
+    echo "Latest tag found: ${latest_tag}"
+    
+    # Extract version number from tag (assuming tag format like "v1.2.3")
+    if [[ "${latest_tag}" =~ ${VERSION_REGEX} ]]; then
         NEWRELIC_AGENT_VERSION="${BASH_REMATCH[1]}"
         echo "Detected NEWRELIC_DOTNET_AGENT_VERSION: ${NEWRELIC_AGENT_VERSION}"
     else
-        echo "Unable to determine Dotnet agent version, GITHUB_REF_NAME environment variable did not match regex. GITHUB_REF_NAME: ${GITHUB_REF_NAME}" >&2
-        exit 1;
+        echo "Unable to parse version from tag: ${latest_tag}" >&2
+        exit 1
     fi
     
     url="https://download.newrelic.com/dot_net_agent/latest_release/newrelic-dotnet-agent_${NEWRELIC_AGENT_VERSION}_${arch}.tar.gz"