http connector first impl

loader/download.go

@@ -0,0 +1,17 @@
+package loader
+
+import "galaxy/connector"
+
+func (l *loader) newerVersion(version string) bool {
+	current := l.cli.Version()
+	return compareSemver(current, version) > 0
+}
+
+// downloadVersion fetches given version artifact, when newer to the current version,
+// and stores at the App's local storage with a pre-defined name with semver suffix
+func (l *loader) downloadVersion(v connector.VersionInfo) {
+	if !l.newerVersion(v.Version) {
+		return
+	}
+	l.conn.DownloadVersion(v.URL)
+}