feature: install the swagger if it has not been installed

Signed-off-by: Starnop <[email protected]>

hack/generate-swagger-models.sh

@@ -4,11 +4,60 @@ set -o nounset
 set -o errexit
 set -o pipefail
 
+# Get the absolute path of this file
+DIR="$( cd "$( dirname "$0"  )" && pwd  )"
+
 # Here is details of the swagger binary we use.
 # $ swagger version
 # version: 0.19.0
+SWAGGER_VERSION=v0.19.0
+
+. ./env.sh
+
+# swagger::check_version checks the command and the version.
+swagger::check_version() {
+  local has_installed version
+
+  has_installed="$(command -v swagger || echo false)"
+  if [[ "${has_installed}" = "false" ]]; then
+    echo false
+    return
+  fi
+
+  version="$(swagger version | head -n 1 | cut -d " " -f 2)"
+  if [[ "${SWAGGER_VERSION}" != "${version}" ]]; then
+    echo false
+    return
+  fi
+  echo true
+}
+
+# swagger::install installs the swagger binary.
+swagger::install() {
+    has_installed="$(swagger::check_version)"
+    if [[ "${has_installed}" = "true" ]]; then
+        echo "swagger-${SWAGGER_VERSION} has been installed."
+        return
+    fi
+
+    echo ">>>> start to install swagger-${SWAGGER_VERSION} <<<<"
+
+    local url
+    url="https://github.com/go-swagger/go-swagger/releases/download/${SWAGGER_VERSION}/swagger_${GOOS}_${GOARCH}"
+    wget --quiet -O /usr/local/bin/swagger "${url}" 
+    chmod +x /usr/local/bin/swagger
+}
+
+# swagger::generate generate the code by go-swagger.
+swagger::generate() {
+    swagger generate model -f "$DIR/../apis/swagger.yml" -t "$DIR/../apis" -m types
+}
+
+main() {
+  swagger::install
+  swagger::generate
+}
+
+main
 
-# Get the absolute path of this file
-DIR="$( cd "$( dirname "$0"  )" && pwd  )"
 
-swagger generate model -f "$DIR/../apis/swagger.yml" -t "$DIR/../apis" -m types