Class: Fog::AWS::Kinesis::Mock

Inherits:
Object
  • Object
show all
Defined in:
lib/fog/aws/kinesis.rb,
lib/fog/aws/requests/kinesis/put_record.rb,
lib/fog/aws/requests/kinesis/get_records.rb,
lib/fog/aws/requests/kinesis/put_records.rb,
lib/fog/aws/requests/kinesis/split_shard.rb,
lib/fog/aws/requests/kinesis/list_streams.rb,
lib/fog/aws/requests/kinesis/merge_shards.rb,
lib/fog/aws/requests/kinesis/create_stream.rb,
lib/fog/aws/requests/kinesis/delete_stream.rb,
lib/fog/aws/requests/kinesis/describe_stream.rb,
lib/fog/aws/requests/kinesis/add_tags_to_stream.rb,
lib/fog/aws/requests/kinesis/get_shard_iterator.rb,
lib/fog/aws/requests/kinesis/list_tags_for_stream.rb,
lib/fog/aws/requests/kinesis/remove_tags_from_stream.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Mock

Returns a new instance of Mock.



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# File 'lib/fog/aws/kinesis.rb', line 147

def initialize(options={})
  @account_id        = Fog::AWS::Mock.owner_id
  @aws_access_key_id = options[:aws_access_key_id]
  @region            = options[:region] || 'us-east-1'

  unless ['ap-northeast-1', 'ap-southeast-1', 'ap-southeast-2', 'eu-central-1', 'eu-west-1', 'sa-east-1', 'us-east-1', 'us-west-1', 'us-west-2'].include?(@region)
    raise ArgumentError, "Unknown region: #{@region.inspect}"
  end
end

Class Method Details

.data ⇒ Object 



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# File 'lib/fog/aws/kinesis.rb', line 133

def self.data
  @data ||= Hash.new do |hash, region|
    hash[region] = Hash.new do |region_hash, key|
      region_hash[key] = {
        :kinesis_streams => {}
      }
    end
  end
end

.mutex ⇒ Object 



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# File 'lib/fog/aws/kinesis.rb', line 128

def self.mutex
  @mutex ||= Mutex.new
end

.next_sequence_number ⇒ Object 



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# File 'lib/fog/aws/kinesis.rb', line 165

def self.next_sequence_number
  mutex.synchronize do
    @sequence_number ||= -1
    @sequence_number += 1
    @sequence_number.to_s
  end
end

.next_shard_id ⇒ Object 



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# File 'lib/fog/aws/kinesis.rb', line 174

def self.next_shard_id
  mutex.synchronize do
    @shard_id ||= -1
    @shard_id += 1
    "shardId-#{@shard_id.to_s.rjust(12, "0")}"
  end
end

.reset ⇒ Object 



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# File 'lib/fog/aws/kinesis.rb', line 143

def self.reset
  @data = nil
end

Instance Method Details

#add_tags_to_stream(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/add_tags_to_stream.rb', line 30

def add_tags_to_stream(options={})
  stream_name = options.delete("StreamName")
  tags = options.delete("Tags")

  unless stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Stream #{stream_name} under account #{@account_id} not found.")
  end

  stream["Tags"] = stream["Tags"].merge(tags)

  response = Excon::Response.new
  response.status = 200
  response.body = ""
  response
end

#create_stream(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/create_stream.rb', line 30

def create_stream(options={})
  stream_name = options.delete("StreamName")
  shard_count = options.delete("ShardCount") || 1
  stream_arn = "arn:aws:kinesis:#{@region}:#{@account_id}:stream/#{stream_name}"

  if data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceInUse.new("Stream #{stream_name} under account #{@account_id} already exists.")
  end

  shards = (0...shard_count).map do |shard|
    {
      "HashKeyRange"=>{
        "EndingHashKey"=>"340282366920938463463374607431768211455",
        "StartingHashKey"=>"0"
      },
      "SequenceNumberRange"=>{
        "StartingSequenceNumber"=> next_sequence_number
      },
      "ShardId"=>next_shard_id,
      "Records" => []
    }
  end

  data[:kinesis_streams] = [{
      "HasMoreShards" => false,
      "StreamARN" => stream_arn,
      "StreamName" => stream_name,
      "StreamStatus" => "ACTIVE",
      "Shards" => shards,
      "Tags" => {}
    }]

  response = Excon::Response.new
  response.status = 200
  response.body = ""
  response
end

#data ⇒ Object 



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# File 'lib/fog/aws/kinesis.rb', line 157

def data
  self.class.data[@region][@aws_access_key_id]
end

#delete_stream(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/delete_stream.rb', line 28

def delete_stream(options={})
  stream_name = options.delete("StreamName")

  unless stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Stream #{stream_name} under account #{@account_id} not found.")
  end

  data[:kinesis_streams].delete(stream)

  response = Excon::Response.new
  response.status = 200
  response.body = ""
  response
end

#describe_stream(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/describe_stream.rb', line 36

def describe_stream(options={})
  stream_name = options.delete("StreamName")

  unless stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Stream #{stream_name} under account #{@account_id} not found.")
  end

  # Strip Records key out of shards for response
  shards = stream["Shards"].reject{ |k,_| k == "Records" }

  response = Excon::Response.new
  response.status = 200
  response.body = { "StreamDescription" => stream.dup.merge("Shards" => shards) }
  response
end

#get_records(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/get_records.rb', line 32

def get_records(options={})
  shard_iterator = Fog::JSON.decode(options.delete("ShardIterator"))
  limit = options.delete("Limit") || -1
  stream_name = shard_iterator["StreamName"]
  shard_id = shard_iterator["ShardId"]
  starting_sequence_number = (shard_iterator["StartingSequenceNumber"] || 1).to_i

  unless stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Stream #{stream_name} under account #{@account_id} not found.")
  end

  unless shard = stream["Shards"].detect{ |shard| shard["ShardId"] == shard_id }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Could not find shard #{shard_id} in stream #{stream_name} under account #{@account_id}.")
  end

  records = []
  shard["Records"].each do |record|
    next if record["SequenceNumber"].to_i < starting_sequence_number
    records << record
    break if records.size == limit
  end

  shard_iterator["StartingSequenceNumber"] = if records.empty?
    starting_sequence_number.to_s
  else
    (records.last["SequenceNumber"].to_i + 1).to_s
  end

  response = Excon::Response.new
  response.status = 200
  response.body = {
    "MillisBehindLatest"=> 0,
    "NextShardIterator"=> Fog::JSON.encode(shard_iterator),
    "Records"=> records
  }
  response
end

#get_shard_iterator(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/get_shard_iterator.rb', line 36

def get_shard_iterator(options={})
  stream_name = options["StreamName"]

  unless stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Stream #{stream_name} under account #{@account_id} not found.")
  end

  response = Excon::Response.new
  response.status = 200
  response.body = {
    "ShardIterator" => Fog::JSON.encode(options) # just encode the options that were given, we decode them in get_records
  }
  response
end

#list_streams(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/list_streams.rb', line 28

def list_streams(options={})
  response = Excon::Response.new
  response.status = 200
  response.body =           {
    "HasMoreStreams" => false,
    "StreamNames" => data[:kinesis_streams].map{ |stream| stream["StreamName"] }
  }
  response
end

#list_tags_for_stream(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/list_tags_for_stream.rb', line 36

def list_tags_for_stream(options={})
  stream_name = options.delete("StreamName")

  unless stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Stream #{stream_name} under account #{@account_id} not found.")
  end

  response = Excon::Response.new
  response.status = 200
  response.body = {
    "HasMoreTags" => false,
    "Tags" => stream["Tags"].map{ |k,v|
      {"Key" => k, "Value" => v}
    }

  }
  response
end

#merge_shards(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/merge_shards.rb', line 32

def merge_shards(options={})
  stream_name = options.delete("StreamName")
  shard_to_merge_id = options.delete("ShardToMerge")
  adjacent_shard_to_merge_id = options.delete("AdjacentShardToMerge")

  unless stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Stream #{stream_name} under account #{@account_id} not found.")
  end

  unless shard_to_merge = stream["Shards"].detect{ |shard| shard["ShardId"] == shard_to_merge_id }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Could not find shard #{shard_to_merge_id} in stream #{stream_name} under account #{@account_id}.")
  end

  unless adjacent_shard_to_merge = stream["Shards"].detect{ |shard| shard["ShardId"] == adjacent_shard_to_merge_id }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Could not find shard #{adjacent_shard_to_merge_id} in stream #{stream_name} under account #{@account_id}.")
  end

  # Close shards (set an EndingSequenceNumber on them)
  shard_to_merge["SequenceNumberRange"]["EndingSequenceNumber"] = next_sequence_number
  adjacent_shard_to_merge["SequenceNumberRange"]["EndingSequenceNumber"] = next_sequence_number

  new_starting_hash_key = [
    shard_to_merge["HashKeyRange"]["StartingHashKey"].to_i,
    adjacent_shard_to_merge["HashKeyRange"]["StartingHashKey"].to_i
  ].min.to_s

  new_ending_hash_key = [
    shard_to_merge["HashKeyRange"]["EndingHashKey"].to_i,
    adjacent_shard_to_merge["HashKeyRange"]["EndingHashKey"].to_i
  ].max.to_s

  # create a new shard with ParentShardId and AdjacentParentShardID
  stream["Shards"] << {
    "HashKeyRange"=> {
      "EndingHashKey" => new_ending_hash_key,
      "StartingHashKey" => new_starting_hash_key
    },
    "SequenceNumberRange" => {
      "StartingSequenceNumber" => next_sequence_number
    },
    "ShardId" => next_shard_id,
    "ParentShardId" => shard_to_merge_id,
    "AdjacentParentShardId" => adjacent_shard_to_merge_id
  }

  response = Excon::Response.new
  response.status = 200
  response.body = ""
  response
end

#mutex ⇒ Object 



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# File 'lib/fog/aws/kinesis.rb', line 131

def mutex; self.class.mutex; end

#next_sequence_number ⇒ Object 



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# File 'lib/fog/aws/kinesis.rb', line 172

def next_sequence_number; self.class.next_sequence_number; end

#next_shard_id ⇒ Object 



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# File 'lib/fog/aws/kinesis.rb', line 181

def next_shard_id; self.class.next_shard_id; end

#put_record(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/put_record.rb', line 38

def put_record(options={})
  stream_name = options.delete("StreamName")

  unless stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Stream #{stream_name} under account #{@account_id} not found.")
  end

  sequence_number = next_sequence_number
  data = options.delete("Data")
  partition_key = options.delete("PartitionKey")

  sample_method = RUBY_VERSION == "1.8.7" ? :choice : :sample
  shard_id = stream["Shards"].send(sample_method)["ShardId"]
  shard = stream["Shards"].detect{ |shard| shard["ShardId"] == shard_id }
  # store the records on the shard(s)
  shard["Records"] << {
    "SequenceNumber" => sequence_number,
    "Data" => data,
    "PartitionKey" => partition_key
  }

  response = Excon::Response.new
  response.status = 200
  response.body = {
    "SequenceNumber" => sequence_number,
    "ShardId" => shard_id
  }
  response
end

#put_records(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/put_records.rb', line 36

def put_records(options={})
  stream_name = options.delete("StreamName")
  unless stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Stream #{stream_name} under account #{@account_id} not found.")
  end

  records = options.delete("Records")
  record_results = records.map { |r|
    sequence_number = next_sequence_number

    sample_method = RUBY_VERSION == "1.8.7" ? :choice : :sample
    shard_id = stream["Shards"].send(sample_method)["ShardId"]
    shard = stream["Shards"].detect{ |shard| shard["ShardId"] == shard_id }
    # store the records on the shard(s)
    shard["Records"] << r.merge("SequenceNumber" => sequence_number)
    {
      "SequenceNumber" => sequence_number,
      "ShardId" => shard_id
    }
  }

  response = Excon::Response.new
  response.status = 200
  response.body = {
    "FailedRecordCount" => 0,
    "Records" => record_results
  }
  response
end

#remove_tags_from_stream(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/remove_tags_from_stream.rb', line 30

def remove_tags_from_stream(options={})
  stream_name = options.delete("StreamName")
  tags = options.delete("TagKeys")

  unless stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Stream #{stream_name} under account #{@account_id} not found.")
  end

  stream["Tags"] = stream["Tags"].delete_if { |k,_| tags.include?(k) }

  response = Excon::Response.new
  response.status = 200
  response.body = ""
  response
end

#reset_data ⇒ Object 



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# File 'lib/fog/aws/kinesis.rb', line 161

def reset_data
  self.class.data[@region].delete(@aws_access_key_id)
end

#split_shard(options = {}) ⇒ Object 



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# File 'lib/fog/aws/requests/kinesis/split_shard.rb', line 32

def split_shard(options={})
  stream_name = options.delete("StreamName")
  shard_id = options.delete("ShardToSplit")
  stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }

  unless stream = data[:kinesis_streams].detect{ |s| s["StreamName"] == stream_name }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Stream #{stream_name} under account #{@account_id} not found.")
  end

  unless shard = stream["Shards"].detect{ |shard| shard["ShardId"] == shard_id }
    raise Fog::AWS::Kinesis::ResourceNotFound.new("Could not find shard #{shard_id} in stream #{stream_name} under account #{@account_id}.")
  end

  # Close original shard (set an EndingSequenceNumber on it)
  shard["SequenceNumberRange"]["EndingSequenceNumber"] = next_sequence_number

  # Calculate new shard ranges
  parent_starting_hash_key = shard["HashKeyRange"]["StartingHashKey"]
  parent_ending_hash_key = shard["HashKeyRange"]["EndingHashKey"]
  new_starting_hash_key = options.delete("NewStartingHashKey")

  # Create two new shards using contiguous hash space based on the original shard
  stream["Shards"] << {
    "HashKeyRange"=> {
      "EndingHashKey" => (new_starting_hash_key.to_i - 1).to_s,
      "StartingHashKey" => parent_starting_hash_key
    },
    "SequenceNumberRange" => {
      "StartingSequenceNumber" => next_sequence_number
    },
    "ShardId" => next_shard_id,
    "ParentShardId" => shard_id
  }
  stream["Shards"] << {
    "HashKeyRange" => {
      "EndingHashKey" => parent_ending_hash_key,
      "StartingHashKey" => new_starting_hash_key
    },
    "SequenceNumberRange" =>{
      "StartingSequenceNumber" => next_sequence_number
    },
    "ShardId" => next_shard_id,
    "ParentShardId" => shard_id
  }

  response = Excon::Response.new
  response.status = 200
  response.body = ""
  response
end