Deploy Metadata with Apex Testing Using REST error

Question

I'm trying to deploy some ApexClass from Apex to Production Org using multipart/forma-data to /services/data/v48.0/metadata/deployRequest following docs.

In the documentation is this example:

POST /services/data/v48.0/metadata/deployRequest
Authorization: Bearer 00D....
Content-Type: multipart/form-data; boundary=--------------------------BOUNDARY
----------------------------BOUNDARY
Content-Disposition: form-data; name="json"
Content-Type: application/json
{ 
    "deployOptions" :
        {
        "allowMissingFiles" : false,
        "autoUpdatePackage" : false,
        "checkOnly" : false,
        "ignoreWarnings" : false,
        "performRetrieve" : false,
        "purgeOnDelete" : false,
        "rollbackOnError" : false,
        "runTests" : null,
        "singlePackage" : true,
        "testLevel" : "RunAllTestsInOrg"
        }
    }
----------------------------BOUNDARY
Content-Disposition: form-data; name="file"; filename="deploy.zip"
Content-Type: application/zip
 
//Contents of deploy.zip
----------------------------BOUNDARY--

The error

"message": "Cannot include more than one non-binary part",
"errorCode": "INVALID_MULTIPART_REQUEST"

So I tried to do it from localhost (using Insomnia) and got the same error.

My steps

1. create deployment package, zip and encode with base64:

src2/
├── classes
│   ├── SomeClass.cls
│   └── SomeClass.cls-meta.xml
└── package.xml

zip -r deploy.zip src2/ 
cat deploy.zip | base64

UEsDBAoAAAAAAGJRcVEAAAAAAAAAAAAAAAAFABwAc3JjMi9VVAkAA6eTs1+xk7NfdXgLAAEE6AMAAAToAwAAUEsDBBQAAAAIADNRcVF7BrKTnwAAAOYAAAAQABwAc3JjMi9wYWNrYWdlLnhtbFVUCQADUZOzX1OTs191eAsAAQToAwAABOgDAABNjssKwjAQRff5ipC9mShFiqQpIrgW1A8Y21GLzYMmSP17Sx/orOYMhztXl71t+Zu62HhXiLVUgpOrfN24RyGul+MqF6Vh+oTVCx/EB9vFQjxTCjuA6DHIePddRbLyFjZKbUFlYClhjQmFYXwYnT6B4rSPbMnehpfm7C0dWoxRw3L6SQ4tmX2gfjZGnvLgL1DP5U2WS6VhIaZh7mwY+wJQSwMECgAAAAAAK1FxUQAAAAAAAAAAAAAAAA0AHABzcmMyL2NsYXNzZXMvVVQJAANCk7NfQpOzX3V4CwABBOgDAAAE6AMAAFBLAwQUAAAACAAjUXFROpR6ORoAAAAcAAAAGgAcAHNyYzIvY2xhc3Nlcy9Tb21lQ2xhc3MuY2xzVVQJAAMyk7NfWZOzX3V4CwABBOgDAAAE6AMAACsoTcrJTFZIzkksLlYIzs9NdQazqrm4arkAUEsDBBQAAAAIAAdRcVGjd2CHiAAAAK4AAAAjABwAc3JjMi9jbGFzc2VzL1NvbWVDbGFzcy5jbHMtbWV0YS54bWxVVAkAA/2Ss19nk7NfdXgLAAEE6AMAAAToAwAATY1BCsIwEEX3OUXI3kyUIippShE8gbof0qiBNgmdsfT4Firi373Pg2ebeejlFEaKOdVqq42SIfncxfSs1e162RxU44RtS5jPPRLJxU9UqxdzOQFQxqLpkUcftM8D7IzZg6lgCIwdMion5DKLJd7XiKuO2lj4O1aDGPlNrvUcp2Dhi8LCL+3EB1BLAQIeAwoAAAAAAGJRcVEAAAAAAAAAAAAAAAAFABgAAAAAAAAAEADtQQAAAABzcmMyL1VUBQADp5OzX3V4CwABBOgDAAAE6AMAAFBLAQIeAxQAAAAIADNRcVF7BrKTnwAAAOYAAAAQABgAAAAAAAEAAACkgT8AAABzcmMyL3BhY2thZ2UueG1sVVQFAANRk7NfdXgLAAEE6AMAAAToAwAAUEsBAh4DCgAAAAAAK1FxUQAAAAAAAAAAAAAAAA0AGAAAAAAAAAAQAO1BKAEAAHNyYzIvY2xhc3Nlcy9VVAUAA0KTs191eAsAAQToAwAABOgDAABQSwECHgMUAAAACAAjUXFROpR6ORoAAAAcAAAAGgAYAAAAAAABAAAApIFvAQAAc3JjMi9jbGFzc2VzL1NvbWVDbGFzcy5jbHNVVAUAAzKTs191eAsAAQToAwAABOgDAABQSwECHgMUAAAACAAHUXFRo3dgh4gAAACuAAAAIwAYAAAAAAABAAAApIHdAQAAc3JjMi9jbGFzc2VzL1NvbWVDbGFzcy5jbHMtbWV0YS54bWxVVAUAA/2Ss191eAsAAQToAwAABOgDAABQSwUGAAAAAAUABQC9AQAAwgIAAAAA

2. Set two values in header:
Authorization -> Bearer ****
Content-Type -> multipart/form-data; boundary=--------------------------BOUNDARY

3. Set body:

----------------------------BOUNDARY
Content-Type: application/json
Content-Disposition: form-data; name="json"

{
    "deployOptions" :
        {
        "allowMissingFiles" : false,
        "autoUpdatePackage" : false,
        "checkOnly" : false,
        "ignoreWarnings" : false,
        "performRetrieve" : false,
        "purgeOnDelete" : false,
        "rollbackOnError" : false,
        "runTests" : null,
        "singlePackage" : true,
        "testLevel" : "RunAllTestsInOrg"
    }
}

----------------------------BOUNDARY
Content-Type: application/zip
Content-Disposition: form-data; name="file"; filename"deploy.zip"

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
----------------------------BOUNDARY--

Question

What am I doing wrong? Is there simpler approach to deploy some classes (which doesn't change) to Prod from Apex? The solution should be lightweight, without using some heavy apex library.

Thanks!

Answer 1

I would suggest use SFDX CLI. It has sfdx force:mdapi:deploy, you don't need to zip package folder, only to pass path to it and login to the org.