azblob.cr

Azure Blob Storage shard for Crystal. Supports

Use concurrency when upload/download size exceeds Azure given limits for one request

• Containers

  • Create
  • Delete
  • List

• Blob

  • List
  • Upload
  • Download
  • Delete

• BlockBlob

  • Upload
  • Download

• Shared Storage Access (SAS)

  • Blob
  • Container

List operations are Paginated

Environment Variables

• AZURE_STORAGE_ACCOUNT_NAME
• AZURE_STORAGE_ACCOUNT_KEY
• AZURE_STORAGE_CONNECTION_STRING
• https_proxy - Proxy address (if used)
• http_proxy - Proxy address (if used)

Use either AZURE_STORAGE_CONNECTION_STRING or combination AZURE_STORAGE_ACCOUNT_NAME and AZURE_STORAGE_ACCOUNT_KEY

Installation

1. Add the dependency to your shard.yml:

   dependencies:
     azblob:
       github: spider-gazelle/azblob.cr

2. Run shards install

Usage

require "azblob"

# Create Client via one of the multiple options given
client = AZBlob.client_from_env  # client from environment variables 
# OR
client = AZBlob.client(connection_string, optional_proxy) # client with given connection string via code
# OR
client = AZBlob::Client.new(config) # client with Client::Config object

# Create container
client.create_container(container-name, metadata) # metadata is optional key/value hash

# Delete container
client.delete_container(container-name)

# List containers
iter = client.list_containers(max_results: 3)
iter.each do |page|
  page.containers.each do{ |c| puts c.name }
end


# List blobs
iter = client.list_blobs(max_results: 3)
iter.each do |page|
  .... # page other attributes
  page.blobs.each .....
end

# upload blob
client.put_blob(...) # various overloads provided

# download blob
client.get_blob(container,blob-name, options)

# Pre-Sign URL (SAS URL)

client.blob_sas(.....)
client.container_sas(.....)

Development

Contributing

1. Fork it (https://github.com/spider-gazelle/azblob.cr/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• Ali Naqvi - creator and maintainer