Class: IPFS::Connection

Inherits:
Object
  • Object
show all
Defined in:
lib/ipfs-api/connection.rb

Defined Under Namespace

Classes: NameCommand

Instance Method Summary collapse

Constructor Details

#initialize(base_url = 'http://127.0.0.1:5001') ⇒ Connection

Returns a new instance of Connection.



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# File 'lib/ipfs-api/connection.rb', line 9

def initialize base_url = 'http://127.0.0.1:5001'
  @base_url = base_url
end

Instance Method Details

#add(nodes, &block) ⇒ Object 



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# File 'lib/ipfs-api/connection.rb', line 13

def add nodes, &block
  boundaries = [ generate_boundary ]
  headers = {
    'Content-Disposition' => 'form-data: name="files"',
    'Content-Type' => "multipart/form-data; boundary=#{boundaries[0]}"
  }
  walker = Upload::TreeWalker.depth_first(nodes)
  node_map = {}
  stream = IO::ReadFromWriterIO.new do |buf|
    next if walker.nil?
    begin
      node, depth = walker.next
      node_map[node.path] = node
    rescue StopIteration
      depth = -1
      walker = nil
    end
    while boundaries.size > depth+1 && boundary = boundaries.shift
      buf << %Q{\
--#{boundary}--\r\n\
\r\n\
\r\n\
}
    end
    next if walker.nil?
    if node.folder?
      boundaries.unshift generate_boundary
      buf << %Q{\
--#{boundaries[1]}\r\n\
Content-Disposition: form-data; name="file"; filename="#{node.path}"\r\n\
Content-Type: multipart/mixed; boundary=#{boundaries[0]}\r\n\
\r\n\
\r\n\
}
    elsif node.file?
      buf << %Q{\
--#{boundaries[0]}\r\n\
Content-Disposition: file; filename="#{node.path}"\r\n\
Content-Type: application/octet-stream\r\n\
\r\n\
#{node.content}\r\n\
}
    else
      raise "Unknown node type: #{node}"
    end
  end
  nodes = []
  post("add?encoding=json&r=true&progress=true", stream, headers) do |chunk|
    next if chunk.empty?
    upload = JSON.parse(chunk)
    path, bytes, hash = ['Name', 'Bytes', 'Hash'].map { |p| upload[p] }
    node = node_map[path]
    node.bytes = bytes if bytes
    node.hash = hash if hash
    if block_given?
      block.call(node)
    elsif hash
      nodes << node
    end
  end
  block_given? ? nil : nodes
end

#cat(path) ⇒ Object 



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# File 'lib/ipfs-api/connection.rb', line 76

def cat path
  result = ''
  post("cat?arg=#{CGI.escape(path)}") do |chunk|
    result << chunk
  end
  result
end

#get(path, destination = nil) ⇒ Object 



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# File 'lib/ipfs-api/connection.rb', line 84

def get path, destination = nil
  stream = IO::ReadFromWriterIO.new do |buf|
    post("get?arg=#{CGI.escape(path)}") do |chunk|
      buf << chunk
    end
    buf.close
  end
  if destination.nil?
    return stream
  else
    return IO::Tar.extract(stream, destination)
  end
end

#id ⇒ Object 



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# File 'lib/ipfs-api/connection.rb', line 98

def id
  JSON.parse(post('id').body)['ID']
end

#ls(path) ⇒ Object 



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# File 'lib/ipfs-api/connection.rb', line 102

def ls path
  JSON.parse(post("ls?arg=#{CGI.escape(path)}").body)
end

#name ⇒ Object 



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# File 'lib/ipfs-api/connection.rb', line 106

def name
  NameCommand.new(self)
end