Unable to upload media file toFirebase emulator - firebase

Question

Using Firebase tools 11.21.0 and FIREBASE_STORAGE_EMULATOR_HOST=localhost:9199 and maven dependency
<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>google-cloud-storage</artifactId>
<version>2.17.1</version>
</dependency>
I started the firebase emulator. And tried a simple file store:
emulatorStorage = StorageOptions.newBuilder()
.setProjectId(projectId)
.setHost("http://localhost:9199")
.setCredentials(NoCredentials.getInstance())
.build()
.getService();
And tried to save a file:
byte[] compress = "test".getBytes();
Blob blob = emulatorStorage.create(
BlobInfo.newBuilder(index, filename)
.setContentType("text/plain")
.build()
,compress,
Storage.BlobTargetOption.doesNotExist());
but even with the content type set I get this every time:
com.google.cloud.storage.StorageException: Failed to parse multipart request body part. Missing content type.
at com.google.cloud.storage.StorageException.translate(StorageException.java:163)
at com.google.cloud.storage.spi.v1.HttpStorageRpc.translate(HttpStorageRpc.java:297)
at com.google.cloud.storage.spi.v1.HttpStorageRpc.create(HttpStorageRpc.java:379)
at com.google.cloud.storage.StorageImpl.lambda$internalCreate$2(StorageImpl.java:208)
at com.google.api.gax.retrying.DirectRetryingExecutor.submit(DirectRetryingExecutor.java:103)
at com.google.cloud.RetryHelper.run(RetryHelper.java:76)
at com.google.cloud.RetryHelper.runWithRetries(RetryHelper.java:50)
at com.google.cloud.storage.Retrying.run(Retrying.java:60)
at com.google.cloud.storage.StorageImpl.run(StorageImpl.java:1476)
at com.google.cloud.storage.StorageImpl.internalCreate(StorageImpl.java:205)
at com.google.cloud.storage.StorageImpl.create(StorageImpl.java:151)
and through debug I know that it is talking to the local emulator:
com.google.api.client.googleapis.json.GoogleJsonResponseException: 400 Bad Request
POST http://localhost:9199/upload/storage/v1/b/demo-project.appspot.com/o?ifGenerationMatch=0&projection=full&uploadType=multipart
{
"code" : 400,
"message" : "Failed to parse multipart request body part. Missing content type."
}
What am I missing in the save operation, is the content type wrong? Or is this likely to be a bug in the emulator or compatibility issue with cloud-storage libs?

Answer 1

I have found github issue you raised and followed steps from there with both firebase v11.21.0 And v11.19.0 but I can successfully upload video files using firebase emulators:start --project demo-project --debug.
As per our conversation above in comments, it seems like you have mistaken firebase-tools-linux as a command. the doc you followed to set up the forebase for linux will just have downloadable file name as firebase-tools-linux It is just file name it does not mean that for linux we have to use firebase-tools-linux as a command for linux machines.If you observe step 3 in the doc you shared, It is pointing to log in and test the CLI where we have to use firebase login only. Hence try with firebase emulators:start --project demo-project --debug command.
Steps I have taken
Step 1:
Cloned source code from the github you shared. Changed directory to firebase-emulator-debug.
Step 2:
Ran below command
`firebase emulators:start --project demo-project --debug`.
Step 3:
Successfully uploaded video file of 2.3 MB from emulator.
FYI, I have also used the linux machine only for the above steps.

Answer 2

As mentioned by #Gridcell Coder, The Cloud Storage for Firebase emulator only supports a very small subset of the Cloud API and it is intended to only be used via the firebase-admin package. Admin SDK is not yet supported for Cloud Storage for Firebase.