Amazon AWS Cognito和Python Boto3建立AWS连接并将文件上传到Bucket

Question

我正在尝试使用AWS cognito服务来验证和上传文件.我已经提供了我的regionType,identityPool,AWS账户ID和UnAuthRole.我也知道生产和开发桶的名称.

我想我正在设置AWS Access Key和AWS Secret Key ...我想使用cognito进行身份验证并使用结果来允许我进行存储桶列表以及稍后的文件上传.

我究竟做错了什么？如何使用cognito id建立S3连接？

这是我的代码和产生的错误:

#!/usr/bin/python

import boto3
import boto
#boto.set_stream_logger('foo')
import json
client = boto3.client('cognito-identity','us-east-1')
resp =  client.get_id(AccountId='<ACCNTID>',IdentityPoolId='<IDPOOLID>')
print "\nIdentity ID: %s"%(resp['IdentityId'])
print "\nRequest ID: %s"%(resp['ResponseMetadata']['RequestId'])
resp = client.get_open_id_token(IdentityId=resp['IdentityId'])
token = resp['Token']
print "\nToken: %s"%(token)
print "\nIdentity ID: %s"%(resp['IdentityId'])
resp = client.get_credentials_for_identity(IdentityId=resp['IdentityId'])
secretKey = resp['Credentials']['SecretKey']
accessKey = resp['Credentials']['AccessKeyId']
print "\nSecretKey: %s"%(secretKey)
print "\nAccessKey ID: %s"%(accessKey)
print resp
conn = boto.connect_s3(aws_access_key_id=accessKey,aws_secret_access_key=secretKey,debug=0)
print "\nConnection: %s"%(conn)
for bucket in conn.get_all_buckets():
    print bucket.name

错误:

   Traceback (most recent call last):
  File "./test.py", line 32, in <module>
    for bucket in conn.get_all_buckets():
  File "/usr/local/lib/python2.7/dist-packages/boto/s3/connection.py", line 440, in get_all_buckets
    response.status, response.reason, body)
boto.exception.S3ResponseError: S3ResponseError: 403 Forbidden
<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>InvalidAccessKeyId</Code><Message>The AWS Access Key Id you provided does not exist in our records.</Message><AWSAccessKeyId>ASIAILXMPZEMJAVZN7TQ</AWSAccessKeyId><RequestId>10631ACFF95610DD</RequestId><HostId>PGWDRBmhLjjv8Ast8v6kVHOG3xR8erJRV2ob3/2RmqHXwrg8HCZV578YsNLaoL24Hknr+nh033U=</HostId></Error>

这个相应的iOS代码工作正常:

AWSCognitoCredentialsProvider *credentialsProvider =
[AWSCognitoCredentialsProvider credentialsWithRegionType:awsCognitoRegionType
                                               accountId:awsAccountId
                                          identityPoolId:awsCognitoIdentityPool
                                           unauthRoleArn:unauthRoleArn
                                                  authRoleArn:nil];

AWSServiceConfiguration *configuration = [AWSServiceConfiguration configurationWithRegion:awsCognitoRegionType
                                                                      credentialsProvider:credentialsProvider];

....

AWSS3TransferManagerUploadRequest *uploadRequest = [AWSS3TransferManagerUploadRequest new];
uploadRequest.bucket = [ELEEnvironment currentEnvironment].userDataS3Bucket;
uploadRequest.key = key;
uploadRequest.body = uploadFileURL;
[[self uploadTask:uploadRequest] continueWithExecutor:[BFExecutor mainThreadExecutor]...

谢谢你的帮助!

Answer 1

这个问题确实无效，因为身份验证不是在创建会话时失败，而是在尝试列出存储桶时失败。

使用上述代码可以很好地从特定存储桶上传和下载，但不适用于所有存储桶的列表。

# Upload a new file
data = open('test.jpg', 'rb')
s3.Bucket('mybucket').put_object(Key='test.jpg', Body=data)

# S3 Object
obj = s3.Object(bucket_name='mybucket', key='test.jpg')
response = obj.get()
data = response['Body'].read()
print len(data)