ZStack - 创建镜像 - 代码天地

/ 前言 /

在ZStack的API中, 大多数的API返回的是一个任务结果查询地址, 此时我们就需要根据这个地址轮训去查询任务状态及结果

{ 
	"location": "http://localhost:8080/v1/api-jobs/967a26b7431c49c0b1d50d709ef1aef3" 
}

想要创建镜像我们先需要创建镜像服务器用来存储镜像, 镜像服务器会在管理节点内部开辟一个目录存储镜像, 而镜像是创建云主机所必需的条件

/ API /

添加镜像仓库服务器

API名称

添加镜像仓库服务器(AddImageStoreBackupStorage)
请求方式

POST zstack/v1/backup-storage/image-store

curl示例

curl -H "Content-Type: application/json" \
-H "Authorization: OAuth b86c9016b4f24953a9edefb53ca0678c" \
-X POST -d '{"params":{"hostname":"192.168.1.8","username":"admin","password":"admin% pass","sshPort":22.0,"url":"/data/imagestore","name":"ImageStore","importImages":false}}' \ 
http://localhost:8080/zstack/v1/backup-storage/image-store

返回示例

// 成功
{}
// 失败
{"error": {
	"code": "SYS.1001",
	"description": "A message or a operation timeout", 
	"details": "Create VM on KVM timeout after 300s"
}}

挂载镜像服务器至区域

API名称

挂载镜像服务器至区域(AttachBackupStorageToZone)
请求方式

POST zstack/v1/zones/{zoneUuid}/backup-storage/{backupStorageUuid}

curl示例

curl -H "Content-Type: application/json" \
-H "Authorization: OAuth b86c9016b4f24953a9edefb53ca0678c" \
-X POST 
http://localhost:8080/zstack/v1/zones/5776b543bc713f6d9abca9cd605c8199/backup- storage/53ef01cbf71d3bd68206908b87e51403

返回示例

{"inventory": {
	"name": "My Backup Storage", 
	"description": "Public Backup Storage", 
	"totalCapacity": 1.073741824E9, 
	"availableCapacity": 9.68884224E8, 
	"type": "Ceph",
	"state": "Enabled",
	"status": "Connected",
	"createDate": "Jun 7, 2017 9:20:19 PM", 
	"lastOpDate": "Jun 7, 2017 9:20:19 PM", 
	"attachedZoneUuids": [ "73799602dbf64c0d85694de34fc596c3"]
}}

添加镜像

API名称

添加镜像(AddImage)
请求方式

POST zstack/v1/images

curl示例

curl -H "Content-Type: application/json" \
-H "Authorization: OAuth b86c9016b4f24953a9edefb53ca0678c" \
-X POST -d '{"params":{"name":"TinyLinux","url":"http://192.168.1.20/share/images/tinylinux. qcow2","mediaType":"RootVolumeTemplate","system":false,"format":"qcow2","platform":"Linux ","backupStorageUuids":["b8fc9c1c027438c28d36af24eca06595"]}}' \ 
http://localhost:8080/zstack/v1/images

返回示例

{ "inventory": {
	"uuid": "8c63603a810a4838a4cd62228e6e13b2", 
	"name": "TinyLinux",
	"url": "http://192.168.1.20/share/images/tinylinux.qcow2", 
	"mediaType": "RootVolumeTemplate",
	"platform": "Linux",
	"format": "qcow2",
	"backupStorageRefs": [
		{ "id": 0.0,
		"imageUuid": "8c63603a810a4838a4cd62228e6e13b2", 
		"backupStorageUuid": "06ccc8e0322a4cd3ae5555d9d88451de", 
		"installPath": "ceph://zs-images/f0b149e053b34c7eb7fe694b182ebffd",
		"status": "Ready"
		}
	]
}}

/ 代码 /

ZStack中, 大多数的API在调用后返回的是

user_name = 'admin'
user_password='password'
host = 'http://localhost:8080/'


# 添加镜像
def create_images(session_uuid):
	# 创建镜像服务器
	data = json.dumps({
        "params":
            {"hostname": "192.168.0.129",
             "username": "root",
             "password": "password",
             "sshPort": 22,
             "url": "/zs_images",
             "name": "ImageStore",
             "type": "image-store",
             "description": "image_des"
             }})
    url = host + 'zstack/v1/backup-storage/image-store'
    headers = {"Content-Type": "application/json", "Authorization": "OAuth " + session_uuid}
    response = requests.post(url, data, headers=headers)
    store_uuid = deal_response(response, True)
    if store_uuid:
    	# 挂载镜像服务器到区域
    	url = host + 'zstack/v1/zones/' + zone_uuid + '/backup-storage/' + store_uuid
	    response = requests.post(url, headers=headers)
	    if deal_response(response, False): 
	    	# 向镜像服务器中添加镜像
		    data = json.dumps({
		        "params": {
		            "name": "Linux",
		            "url": "http://47.103.76.2/iso/centos7.iso",
		            "mediaType": "RootVolumeTemplate",
		            "system": "false",
		            "format": "qcow2",
		            "platform": "Linux",
		            "backupStorageUuids": [store_uuid]}})
		    url = host + 'zstack/v1/images'
		    response = requests.post(url, data, headers=headers)
		    image_uuid = deal_response(response, True)
		    if image_uuid :
		        return image_uuid


# 处理返回数据
def deal_response(response, is_return):
    if response:
        rsp = json.loads(response.text)
        if rsp:
            print('rsp : {%s}' % rsp)
            json_str = query_until_done(rsp)
            if json_str:
                if not json_str.has_key('error'):
                    if is_return:
                        return json_str['inventory']['uuid']
                    else:
                        return True
    return False


# 轮询查询API结果
def query_until_done(rsp):
	# 截取任务id, 替换请求地址
        if rsp.has_key('location'):
        location = rsp['location']
        job_uuid = location.split('/')[-1]
        if job_uuid:
            while True:
                url = host + "zstack/v1/api-jobs/" + location.split('/')[-1]
                response = requests.get(url)
                text = response.text
                print(text)
                if text != '{}':
                    print('url : {%s}' % url)
                    return json.loads(text)


if __name__ == '__main__':
	session_uuid = login()
	if session_uuid:
		# 创建计算规格
        image_uuid = create_images(session_uuid)