Tracking Issues with Conditional Write

[Xuanwo]

OpenDAL supports conditional requests at the API level, although not all supported services have implemented them. This issue is used to track their implementation.

Steps

Implement if_not_exists for write like this #5129

opendal/core/src/services/s3/core.rs

Lines 335 to 337 in b92cfc4

	if let Some(if_none_match) = args.if_none_match() {
	req = req.header(IF_NONE_MATCH, if_none_match);
	}

Services

• s3 (if_not_exists in multipart upload)
• azblob
• azdls
• cos (seems not supported, we need to check and try)
• gcs
• obs (seems not supported, we need to check and try)
• oss (seems not supported, we need to check and try)

[Xuanwo]

Hello @ForestLH, thank you for adding support for S3's conditional write. However, the previous PR only covered simple writes. Would you be interested in extending this to multipart uploads as well?

[ForestLH]

Hello @ForestLH, thank you for adding support for S3's conditional write. However, the previous PR only covered simple writes. Would you be interested in extending this to multipart uploads as well?

Sure, my pleasure. But I don't have an account for one of these cloud services(like cos, azblob, azdls...), and I want to know
some easier methods than sign up for them to test my code. Thanks.

[Xuanwo]

For Azblob, you can use https://github.com/Azure/Azurite. We have a fixture available at: https://github.com/apache/opendal/blob/main/fixtures/azblob/docker-compose-azurite.yml.

For other services, we have only configured continuous integration so far. You can submit PR and I can help trigger the CI for you.

[ForestLH]

For Azblob, you can use https://github.com/Azure/Azurite. We have a fixture available at: https://github.com/apache/opendal/blob/main/fixtures/azblob/docker-compose-azurite.yml.

For other services, we have only configured continuous integration so far. You can submit PR and I can help trigger the CI for you.

Thanks for your help. plz assign me, I will try it.

[Xuanwo]

Thank you @ForestLH!