使用python创建对象ibm-cos-sdk get不起作用。
使用python创建对象ibm-cos-sdk get不起作用。
提问于 2018-11-21 03:13:37
我需要帮助..。我无法从我在Watson Studio中创建的笔记本中访问我用IBM仪表板创建的COS中的一个桶。这叫bucket3。
最初，我使用IBM‘Asset’从一个f2.zip (csv)文件创建了一个bucket2，并且能够访问f2.zip。这叫bucket2。
f2.zip上传到bucket2 --后来发现它是在以前的COS存储上创建的；即。在IBM上创建的资产‘云-对象-存储-nl’。这叫bucket1。我在IBM名称=‘云对象-存储-xx’上有一个Lite COS。
我可以读取f2.zip，并且能够使用"Files“按钮生成的凭据(cred_b2_editor)在cred_b2_editor中创建一个新的f2.zip。
IBM仪表板显示：
bucket1 us-geo Standard
bucket2 us-geo Standard
bucket3 us-east Standard我使用的例子来自 in Using Python ibm sdk。
在2种情况下调用ClientError操作:请求实体太大时发生了“PutObject :一个错误(413)”失败：
- 当我使用endpoint_url =‘端点’形式时，IBM生成的桶凭据- ibm_api_key_id并不重要。
成功:当我使用endpoint_url = 'endpoint_url‘形成由沃森工作室生成的沃森凭证.写入bucket2，而不考虑ibm_api_key_id (bucket2或bucket3)
代码：
# Point to generated credentials
credDict = dict(b2 = cred_b2_editor,
b3 = cred_b3_writer,
watson = cred_watson
)
bucketName = 'b3'
kwargs = dict(
ibm_api_key_id=credDict[bucketName]['ibm_api_key_id'],
ibm_service_instance_id=credDict[bucketName]['cred']['iam_serviceid_crn'], #COS_RESOURCE_CRN,
ibm_auth_endpoint=COS_AUTH_ENDPOINT,
config=Config(signature_version="oauth"),
endpoint_url=credDict[bucketName]['ep_private']
)
buckName = bucketDict[bucketName].split(':')[-1:][0]
print(buckName, kwargs['ibm_api_key_id'], kwargs['endpoint_url'])
cos = ibm_boto3.resource("s3", **kwargs)
#---> fix: bucketname needed to change with each bucket...
#---> fix: endpoint_url needs to point to private/public endpoint
cos.Object(buckName, csvBN.replace('.csv','.zip')).put(
Body=zbuf
)凭据代码-生成了以下所有内容
'''
Cloud Resource Name or 'bucket ID string'
The last field is the `bucketName`
'''
bucketDict = dict(b2 = 'crn:v1:bluemix:public:cloud-object-storage:global:a/<IDNum>:<serviceID-seperated>:bucket:bucket2',
b3 = 'crn:v1:bluemix:public:cloud-object-storage:global:a/<IDNum>:<serviceID-seperated>:bucket:bucket3'
)
# Bucket2 Editor credentials - created by IBM Watson automatically
cred_b2_editor = {
"apikey": "....",
"cos_hmac_keys": {
"access_key_id": "...",
"secret_access_key": "..."
},
"endpoints": "https://cos-service.bluemix.net/endpoints",
"iam_apikey_description": "Auto generated apikey during resource-key operation for Instance - crn:v1:bluemix:public:cloud-object-storage:global:a/<ServiceIDNum>:<COS_ID>::",
"iam_apikey_name": "auto-generated-apikey-<apikey_2>",
"iam_role_crn": "crn:v1:bluemix:public:iam::::serviceRole:Writer",
"iam_serviceid_crn": "crn:v1:bluemix:public:iam-identity::a/<ServiceIDNum>::serviceid:ServiceId-<serviceID_2>",
"resource_instance_id": "crn:v1:bluemix:public:cloud-object-storage:global:a/<ServiceIDNum>:<COS_ID>::"
}
## Bucket3 Create via IBM Cloud "New Credentials"
cred_b3_writer = {
"apikey": "4hEJq-slh28Atvq3XnekZ4YOl0yWiv4LbFigoPS3oiuL",
"endpoints": "https://cos-service.bluemix.net/endpoints",
"iam_apikey_description": "Auto generated apikey during resource-key operation for Instance - crn:v1:bluemix:public:cloud-object-storage:global:a/<ServiceIDNum>-<COS_ID>::",
"iam_apikey_name": "auto-generated-apikey-<apikey_3>",
"iam_role_crn": "crn:v1:bluemix:public:iam::::serviceRole:Writer",
"iam_serviceid_crn": "crn:v1:bluemix:public:iam-identity::a/<ServiceIDNum>::serviceid:ServiceId-<ServiceID_3>",
"resource_instance_id": "crn:v1:bluemix:public:cloud-object-storage:global:a/<ServiceIDNum>:<COS_ID>::"
}
# Created inside juptyer notebook 10/01 button
cred_b2_cos = dict(ibm_api_key_id=cred_b2['apikey'],
ibm_auth_endpoint="https://iam.ng.bluemix.net/oidc/token",
config=Config(signature_version='oauth'),
ep_private='https://s3-api.us-geo.objectstorage.service.networklayer.com',
ep_public = 'https://s3-api.us-geo.objectstorage.softlayer.net',
cred = cred_b2_editor
)
cred_b3_cos = dict(ibm_api_key_id=cred_b3['apikey'],
ibm_auth_endpoint="https://iam.ng.bluemix.net/oidc/token",
config=Config(signature_version='oauth'),
ep_private = 'https://s3.us-east.objectstorage.service.networklayer.com',
ep_public = 'https://s3.us-east.objectstorage.softlayer.net',
cred = cred_b3_writer
)回答 1
Stack Overflow用户
发布于 2018-11-21 05:47:02
所需的解决办法：
- 导入具有桶名的bucket.configuration.CRN
- 导入一个'Writer‘ServiceCredential，并且
- 在调用bucketName ()时设置cos.Object和相应的kwargs。
键是将存储桶endpoint_url设置为相应桶的私有/公共端点。
对代码示例进行了更正，以反映更改。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/53404771
复制相关文章
相似问题
腾讯云开发者
