Create get_image_size.sh

get_image_size.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+
+ARCH=""
+MANIFEST_FILE="manifest.json"
+
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        --arch)
+            ARCH="$2"
+            shift 2
+            ;;
+    esac
+done
+
+MANIFEST_CONTENT=$(cat "$MANIFEST_FILE")
+
+if echo "$MANIFEST_CONTENT" | jq -e '.[0]' > /dev/null 2>&1; then
+    MANIFEST_ARRAY=$(echo "$MANIFEST_CONTENT" | jq -c '.[]')
+else
+    MANIFEST_ARRAY=$(echo "$MANIFEST_CONTENT" | jq -c '.')
+fi
+
+arch_info=""
+
+while IFS= read -r item; do
+    if [ -n "$item" ]; then
+        item_arch=$(echo "$item" | jq -r '.Descriptor.platform.architecture // empty')
+        item_variant=$(echo "$item" | jq -r '.Descriptor.platform.variant // empty')
+        
+        if [[ "$ARCH" == *"$item_arch"* ]]; then
+            if [ -n "$VARIANT_PART" ]; then
+                if [ "$item_variant" = "$VARIANT_PART" ]; then
+                    arch_info="$item"
+                    break
+                fi
+            else
+                arch_info="$item"
+                break
+            fi
+        fi
+    fi
+done <<< "$MANIFEST_ARRAY"
+
+if [ -z "$arch_info" ]; then
+    echo "Error: No manifest found for architecture $ARCH"
+    exit 1
+fi
+
+total_size=0
+layers=$(echo "$arch_info" | jq -c '.OCIManifest.layers[]')
+
+if [ -z "$layers" ]; then
+    echo "Error: No layers found in the manifest"
+    exit 1
+fi
+
+while IFS= read -r layer; do
+    if [ -n "$layer" ]; then
+        size=$(echo "$layer" | jq -r '.size')
+        total_size=$((total_size + size))
+    fi
+done <<< "$layers"
+
+echo "$((total_size / 1024 / 1024)) MB"