OpenSlsService

Request syntax

POST https://sls.aliyuncs.com/
? AccessKeyId=yourAccessKeyId
&Action=OpenSlsService
&Format=Format
&SignatureMethod=HMAC-SHA1
&SignatureNonce=SignatureNonce
&SignatureVersion=SignatureVersion
&Timestamp=Timestamp
&Version=Version
&Signature=Signature

Request parameters

• Request headers

  The OpenSlsService operation does not have operation-specific request headers.

• Parameters

  Parameter	Type	Required	Example	Description
  Action	String	Yes	OpenSlsService	The operation that you want to perform. Set the value to OpenSlsService.
  AccessKeyId	String	Yes	test-key	The AccessKey ID of your Alibaba Cloud account. For more information about how to obtain an AccessKey pair, see AccessKey pair.
  Signature	String	Yes	xxxxxx	The signature string of the current request. For more information about how signatures are calculated, see Signature method.
  SignatureMethod	String	Yes	HMAC-SHA1	The encryption method of the signature string.
  SignatureVersion	String	Yes	1.0	The version of the signature algorithm.
  SignatureNonce	String	Yes	dt712rl9d	A unique, random number that is used to prevent replay attacks. You must use different numbers for different requests.
  Timestamp	String	Yes	2018-01-01T12:00:00Z	The timestamp of the request. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC. For example, 2018-01-01T12:00:00Z indicates 20:00:00 on January 1, 2018 (UTC+8).
  Version	String	Yes	2019-10-23	The version number of the API. The value must be in the YYYY-MM-DD format.
  Format	String	No	JSON	The format in which to return the response. Valid values: JSON and XML. Default value: XML.

Signature method

1. Compose and encode a string-to-sign.
   1. Create a canonicalized query string by arranging the request parameters in alphabetical order. These parameters include all common and operation-specific parameters except Signature.
   2. Encode the parameters in UTF-8. For more information, see RFC 3986.
      • Uppercase letters, lowercase letters, digits, and some special characters such as hyphens (-), underscores (_), periods (.), and tildes (~) do not need to be encoded.
      • Other characters must be percent encoded in %XY format. XY represents the ASCII code of the characters in hexadecimal notation. For example, double quotation marks (") are encoded as %22.
      • Use an equal sign (=) to concatenate each encoded request parameter and its value.
      • Use an ampersand (&) to concatenate encoded request parameters in alphabetical order. These parameters include all common and operation-specific parameters except Signature.
   3. Create a canonicalized query string.
2. Create a string-to-sign.
   1. Create StringToSign.

      StringToSign=
        HTTPMethod + "&" + //HTTPMethod: HTTP method used to send the request, such as GET.
        percentEncode("/") + "&" + //percentEncode("/"): Encode backslash (/) as %2F.
        percentEncode(CanonicalizedQueryString) //Encode the canonicalized query string created in Step 1.

   2. Calculate the HMAC value of the string-to-sign as defined in RFC 2104. Use the SHA1 algorithm to calculate the HMAC value of the StringToSign. The AccessKey secret is used as the key for the HMAC calculation.

      Signature = Base64( HMAC-SHA1( AccessKeySecret + "&", UTF-8-Encoding-Of(StringToSign) ) )

   3. Encode the Signature parameter based on the RFC 3986 specification and add the encoded signature to the canonicalized query string.

The following sample code shows how to use Python to call the OpenSlsService operation:

import base64
import datetime
import hmac
import random
from hashlib import sha1
from urllib import parse

import pytz

url = 'https://sls.aliyuncs.com/?'
accessKeyId = 'test-key'
accessKeySecret = 'test-secret'

params = {
    'AccessKeyId': accessKeyId,
    'Action': 'OpenSlsService',
    'Format': 'JSON',
    'Version': '2019-10-23',
    'SignatureMethod': 'HMAC-SHA1',
    'SignatureNonce': str(int(random.random() * 1000000)),
    'SignatureVersion': '1.0',
    'Timestamp': parse.quote(
        datetime.datetime.now(pytz.utc).strftime('%Y-%m-%dT%H:%M:%SZ')
    )
}


def create_url():
    kvs = sorted(params.items(), key=lambda x: x[0])
    paramStr = '&'.join([k + '=' + v for k, v in kvs])
    sigStr = 'GET&%2F&' + parse.quote(paramStr, safe='')
    hashed = hmac.new((accessKeySecret + '&').encode(), sigStr.encode(), sha1)
    signature = base64.encodebytes(
        hashed.digest()).decode('utf-8').rstrip('\n')
    return url + paramStr + '&Signature=' + signature

print(create_url())

Response elements

• Response headers

  The OpenSlsService operation does not have operation-specific response headers.

• Response elements

  If the HTTP status code 200 is returned, the request is successful.

  Parameter	Type	Example	Description
  RequestId	String	1CCC2B8E-4FF3-4755-A96C-8CE2E4BF27DF	The ID of the request.
  Success	Boolean	true	Indicates whether the request is successful. Valid values: true and false. true: The request is successful. false: The request failed.
  Code	String	200	The returned status code.
  Message	String	You have activated Log Service. You can go to the Log Service console to manage logs.	The description of the response returned.

Examples

• Sample requests

  https://sls.aliyuncs.com/
  ? AccessKeyId=test-key
  &Action=OpenSlsService
  &Format=JSON
  &SignatureMethod=HMAC-SHA1
  &SignatureNonce=222856
  &SignatureVersion=1.0
  &Timestamp=2020-09-15T13%3A01%3A26Z
  &Version=2019-10-23
  &Signature=xxxxxxx

• Sample success responses

  {
    "RequestId": "1CCC2B8E-4FF3-4755-A96C-8CE2E4BF27DF",
    "Message": "You have activated Log Service. You can go to the Log Service console to manage logs.",
    "Code": "200",
    "Success": true
  }

Error codes

For a list of error codes, see Error codes.