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# -*- coding: utf-8 -*-
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
require 'test_help'
class TestDataFile < Test::Unit::TestCase
HERE = File.expand_path File.dirname(__FILE__)
def setup
if File.exists?(HERE + '/data.avr')
File.unlink(HERE + '/data.avr')
end
end
def teardown
if File.exists?(HERE + '/data.avr')
File.unlink(HERE + '/data.avr')
end
end
def test_differing_schemas_with_primitives
writer_schema = <<-JSON
{ "type": "record",
"name": "User",
"fields" : [
{"name": "username", "type": "string"},
{"name": "age", "type": "int"},
{"name": "verified", "type": "boolean", "default": "false"}
]}
JSON
data = [{"username" => "john", "age" => 25, "verified" => true},
{"username" => "ryan", "age" => 23, "verified" => false}]
Avro::DataFile.open('data.avr', 'w', writer_schema) do |dw|
data.each{|h| dw << h }
end
# extract the username only from the avro serialized file
reader_schema = <<-JSON
{ "type": "record",
"name": "User",
"fields" : [
{"name": "username", "type": "string"}
]}
JSON
Avro::DataFile.open('data.avr', 'r', reader_schema) do |dr|
dr.each_with_index do |record, i|
assert_equal data[i]['username'], record['username']
end
end
end
def test_differing_schemas_with_complex_objects
writer_schema = <<-JSON
{ "type": "record",
"name": "something",
"fields": [
{"name": "something_fixed", "type": {"name": "inner_fixed",
"type": "fixed", "size": 3}},
{"name": "something_enum", "type": {"name": "inner_enum",
"type": "enum",
"symbols": ["hello", "goodbye"]}},
{"name": "something_array", "type": {"type": "array", "items": "int"}},
{"name": "something_map", "type": {"type": "map", "values": "int"}},
{"name": "something_record", "type": {"name": "inner_record",
"type": "record",
"fields": [
{"name": "inner", "type": "int"}
]}},
{"name": "username", "type": "string"}
]}
JSON
data = [{"username" => "john",
"something_fixed" => "foo",
"something_enum" => "hello",
"something_array" => [1,2,3],
"something_map" => {"a" => 1, "b" => 2},
"something_record" => {"inner" => 2},
"something_error" => {"code" => 403}
},
{"username" => "ryan",
"something_fixed" => "bar",
"something_enum" => "goodbye",
"something_array" => [1,2,3],
"something_map" => {"a" => 2, "b" => 6},
"something_record" => {"inner" => 1},
"something_error" => {"code" => 401}
}]
Avro::DataFile.open('data.avr', 'w', writer_schema) do |dw|
data.each{|d| dw << d }
end
%w[fixed enum record error array map union].each do |s|
reader = MultiJson.load(writer_schema)
reader['fields'] = reader['fields'].reject{|f| f['type']['type'] == s}
Avro::DataFile.open('data.avr', 'r', MultiJson.dump(reader)) do |dr|
dr.each_with_index do |obj, i|
reader['fields'].each do |field|
assert_equal data[i][field['name']], obj[field['name']]
end
end
end
end
end
def test_data_writer_handles_sync_interval
writer_schema = <<-JSON
{ "type": "record",
"name": "something",
"fields": [
{"name": "something_boolean", "type": "boolean"}
]}
JSON
data = {"something_boolean" => true }
Avro::DataFile.open('data.avr', 'w', writer_schema) do |dw|
while dw.writer.tell < Avro::DataFile::SYNC_INTERVAL
dw << data
end
block_count = dw.block_count
dw << data
# ensure we didn't just write another block
assert_equal(block_count+1, dw.block_count)
end
end
def test_utf8
datafile = Avro::DataFile::open('data.avr', 'w', '"string"')
datafile << "家"
datafile.close
datafile = Avro::DataFile.open('data.avr')
datafile.each do |s|
assert_equal "家", s
end
datafile.close
end
def test_deflate
Avro::DataFile.open('data.avr', 'w', '"string"', :deflate) do |writer|
writer << 'a' * 10_000
end
assert(File.size('data.avr') < 500)
records = []
Avro::DataFile.open('data.avr') do |reader|
reader.each {|record| records << record }
end
assert_equal records, ['a' * 10_000]
end
def test_snappy
Avro::DataFile.open('data.avr', 'w', '"string"', :snappy) do |writer|
writer << 'a' * 10_000
end
assert(File.size('data.avr') < 600)
records = []
Avro::DataFile.open('data.avr') do |reader|
reader.each {|record| records << record }
end
assert_equal records, ['a' * 10_000]
end
def test_append_to_deflated_file
schema = Avro::Schema.parse('"string"')
writer = Avro::IO::DatumWriter.new(schema)
file = Avro::DataFile::Writer.new(File.open('data.avr', 'wb'), writer, schema, :deflate)
file << 'a' * 10_000
file.close
file = Avro::DataFile::Writer.new(File.open('data.avr', 'a+b'), writer)
file << 'b' * 10_000
file.close
assert(File.size('data.avr') < 1_000)
records = []
Avro::DataFile.open('data.avr') do |reader|
reader.each {|record| records << record }
end
assert_equal records, ['a' * 10_000, 'b' * 10_000]
end
def test_custom_meta
meta = { 'x.greeting' => 'yo' }
schema = Avro::Schema.parse('"string"')
writer = Avro::IO::DatumWriter.new(schema)
file = Avro::DataFile::Writer.new(File.open('data.avr', 'wb'), writer, schema, nil, meta)
file.close
Avro::DataFile.open('data.avr') do |reader|
assert_equal 'yo', reader.meta['x.greeting']
end
end
end
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