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Submit a workflow using a BAM file input

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This article demonstrates how to submit a workflow to the Microsoft Genomics service if your input file is a single BAM file. This topic assumes you have already installed and run the msgen client, and are familiar with how to use Azure Storage. If you have successfully submitted a workflow using the provided sample data, you are ready to proceed with this article.

Set up: Upload your BAM file to Azure storage

Let’s assume you have a single BAM file, reads.bam, and you have uploaded it to your storage account myaccount in Azure as https://myaccount.blob.core.windows.net/inputs/reads.bam. You have the API URL and your access key. You want to have outputs in https://myaccount.blob.core.windows.net/outputs.

Submit your job to the msgen client

Here is the minimal set of arguments that you will need to provide to the msgen client; line breaks are added for clarity:

For Windows:

msgen submit ^
  --api-url-base <Genomics API URL> ^
  --access-key <Genomics access key> ^
  --process-args R=b37m1 ^
  --input-storage-account-name myaccount ^
  --input-storage-account-key <storage access key to "myaccount"> ^
  --input-storage-account-container inputs ^
  --input-blob-name-1 reads.bam ^
  --output-storage-account-name myaccount ^
  --output-storage-account-key <storage access key to "myaccount"> ^
  --output-storage-account-container outputs

For Unix

msgen submit \
  --api-url-base <Genomics API URL> \
  --access-key <Genomics access key> \
  --process-args R=b37m1 \
  --input-storage-account-name myaccount \
  --input-storage-account-key <storage access key to "myaccount"> \
  --input-storage-account-container inputs \
  --input-blob-name-1 reads.bam \
  --output-storage-account-name myaccount \
  --output-storage-account-key <storage access key to "myaccount"> \
  --output-storage-account-container outputs

If you prefer using a configuration file, here is what it would contain:

api_url_base:                     <Genomics API URL>
access_key:                       <Genomics access key>
process_args:                     R=b37m1
input_storage_account_name:       myaccount
input_storage_account_key:        <storage access key to "myaccount">
input_storage_account_container:  inputs
input_blob_name_1:                reads.bam
output_storage_account_name:      myaccount
output_storage_account_key:       <storage access key to "myaccount">
output_storage_account_container: outputs

Submit the config.txt file with this invocation: msgen submit -f config.txt

Next steps

In this article, you uploaded a BAM file into Azure Storage and submitted a workflow to the Microsoft Genomics service through the msgen Python client. For additional information regarding workflow submission and other commands you can use with the Microsoft Genomics service, see our FAQ.