Python3 语言 get 请求签名 demo

import hmac
import json
import base64
import datetime
from hashlib import sha256
from collections import OrderedDict
import urllib.request, urllib.error, urllib.parse

class QingApi:
    def __init__(self):
        self.access_key_id = 'xxxxxx'
        self.secret_access_key = 'xxxxxxx'
        self.time_stamp = datetime.datetime.utcnow().strftime("%Y-%m-%dT%H:%M:%SZ")
        self.url = "https://api.shanhe.com/iaas/"
        self.url_path = '/iaas/'
        self.methods = 'GET'

    def postResust(self, iassurl):
        req = urllib.request.Request(iassurl)
        result = urllib.request.urlopen(req)
        response = json.loads(result.read().decode())
        print(response)

    def getVhost(self):
        od = OrderedDict()
        od['access_key_id'] = self.access_key_id
        od['action'] = "DescribeInstances"
        od['signature_method'] = "HmacSHA256"
        od['signature_version'] = 1
        od['time_stamp'] = self.time_stamp
        od['version'] = 1
        od['zone'] = "sh1"

        od['instances.1'] = "i-ets7af6q"

        od = self.sort_value(od)
        data = urllib.parse.urlencode(od)
        string_to_sign = self.methods + "\n" + self.url_path + "\n" + data
        h = hmac.new(self.secret_access_key.encode(), digestmod=sha256)
        h.update(string_to_sign.encode())
        sign = base64.b64encode(h.digest()).strip()
        signature = urllib.parse.quote_plus(sign)
        print("signature是:"+signature)
        iaasUrl = self.url + "?" + data + "&signature=" + signature
        print(iaasUrl)
        self.postResust(iaasUrl)

    def sort_value(self, old_dict):
        items = sorted(old_dict.items())
        new_dict = OrderedDict()
        for item in items:
            new_dict[item[0]] = old_dict[item[0]]
        return new_dict

x = QingApi()
x.getVhost()

signature是:1i700cIAv0yVLdEJ8H5e%2FBnjFkchoSdVnHmD6Wqpzdw%3D

{
    "action": "DescribeInstancesResponse",
    "instance_set": [
        {
            "host_machine": "sh1br08n02",
            "hostname": "i-ets7af6q",
            "vxnets": [
                {
                    "ipv6_address": "",
                    "vxnet_type": 1,
                    "vxnet_id": "vxnet-phgzwim",
                    "vxnet_name": "测试集群搭建",
                    "role": 1,
                    "private_ip": "192.168.8.3",
                    "security_group": {
                        "is_default": 1,
                        "security_group_name": "default security group",
                        "security_group_id": "sg-xmldyszl"
                    },
                    "nic_id": "52:54:99:f4:da:2c",
                    "security_groups": [
                        {
                            "is_default": 1,
                            "security_group_name": "default security group",
                            "security_group_id": "sg-xmldyszl"
                        }
                    ]
                }
            ],
            "memory_current": 2048,
            "graphics_port": "5954",
            "extra": {
                "nic_type": "",
                "nic_mqueue": 0,
                "read_throughput": 0,
                "container_mode": null,
                "ib_sriov_type": 0,
                "spice_compression": null,
                "instance_ext_type": "",
                "bandwidth": 500,
                "filetransfer": 1,
                "os_disk_encryption": 0,
                "slots": {
                    "i|52:54:99:f4:da:2c": "s|0x03",
                    "d|i-ets7af6q": "s|0x07"
                },
                "sanc_rep_count": null,
                "block_bus": "",
                "gpu_class": 0,
                "features": 4,
                "no_restrict": 0,
                "usb": 1,
                "ivshmem": [ ],
                "gpu_pci_nums": "",
                "label": null,
                "rg": null,
                "policy": null,
                "gpu": 0,
                "clipboard": 1,
                "qxl_number": 0,
                "cpu_max": 0,
                "cpu_model": "",
                "mem_max": 0,
                "max_bs": null,
                "usbredir": 1,
                "sriov_nic_type": 0,
                "no_limit": 0,
                "iops": 900,
                "throughput": 44544,
                "read_iops": 0,
                "hypervisor": "kvm",
                "os_disk_size": 50,
                "boot_dev": "",
                "usb3_bus": null
            },
            "vcpus_max": 2,
            "image": {
                "ui_type": "tui",
                "agent_type": "pitrix",
                "processor_type": "64bit",
                "image_id": "centos77x64a",
                "features_supported": {
                    "set_keypair": 1,
                    "disk_hot_plug": 1,
                    "root_fs_rw_online": 1,
                    "user_data": 1,
                    "set_pwd": 1,
                    "root_fs_rw_offline": 1,
                    "ipv6_supported": 1,
                    "nic_hot_plug": 1,
                    "join_multiple_managed_vxnets": 0,
                    "reset_fstab": 1
                },
                "image_size": 20,
                "image_name": "CentOS 7.7 64bit",
                "platform": "linux",
                "os_family": "centos",
                "provider": "system",
                "f_resetpwd": 1,
                "default_passwd": "p12cHANgepwD",
                "default_user": "root",
                "features": 64
            },
            "graphics_passwd": "2oyPo0IAbpR9jG21Ih6CQnwqZUQfvV1s",
            "console_id": "qingcloud",
            "create_time": "2020-09-08T02:29:49Z",
            "alarm_status": "",
            "owner": "usr-CT3owI01",
            "place_group_id": "plg-00000101",
            "broker_port": "",
            "security_groups": [
                {
                    "is_default": 1,
                    "security_group_name": "default security group",
                    "security_group_id": "sg-xmldyszl"
                }
            ],
            "vcpus_current": 2,
            "instance_id": "i-ets7af6q",
            "instance_type": "s1.large.r1",
            "memory_max": 2048,
            "sub_code": 0,
            "graphics_protocol": "vnc",
            "label": null,
            "platform": "linux",
            "instance_class": 101,
            "status_time": "2021-04-20T03:23:50Z",
            "status": "running",
            "description": null,
            "cpu_topology": "",
            "tags": [ ],
            "transition_status": "",
            "eips": [ ],
            "controller": "self",
            "repl": "rpp-00000002",
            "broker_host": "",
            "cpu_oversale_rate": 5,
            "volume_ids": [ ],
            "zone_id": "sh1b",
            "lastest_snapshot_time": null,
            "instance_name": "",
            "cpu_model_name": "Intel(R) Xeon(R) Gold 6240 CPU @ 2.60GHz",
            "root_user_id": "usr-CT3owI01",
            "dns_aliases": [ ],
            "volumes": [ ],
            "security_group": {
                "is_default": 1,
                "security_group_name": "default security group",
                "security_group_id": "sg-xmldyszl"
            },
            "resource_project_info": [ ]
        }
    ],
    "total_count": 1,
    "ret_code": 0
}