Class: DeprecationTracker::ShardMerger

Inherits:
Object
  • Object
show all
Defined in:
lib/deprecation_tracker/shard_merger.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(base_path, delete_shards: false) ⇒ ShardMerger

Returns a new instance of ShardMerger.



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# File 'lib/deprecation_tracker/shard_merger.rb', line 8

def initialize(base_path, delete_shards: false)
  @base_path = base_path
  @delete_shards = delete_shards
end

Instance Attribute Details

#base_path ⇒ Object (readonly)

Returns the value of attribute base_path.



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# File 'lib/deprecation_tracker/shard_merger.rb', line 6

def base_path
  @base_path
end

#delete_shards ⇒ Object (readonly)

Returns the value of attribute delete_shards.



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# File 'lib/deprecation_tracker/shard_merger.rb', line 6

def delete_shards
  @delete_shards
end

Instance Method Details

#merge ⇒ Object 



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# File 'lib/deprecation_tracker/shard_merger.rb', line 13

def merge
  dirname = File.dirname(base_path)
  unless File.directory?(dirname)
    warn "Directory does not exist: #{dirname}"
    return { shards: 0, result: {} }
  end

  shard_files = Dir.glob(shard_glob).sort

  if shard_files.empty?
    warn "No shards found at #{shard_glob}"
    return { shards: 0, result: {} }
  end

  merged = {}
  shard_files.each do |file|
    parse_shard(file).each do |bucket, messages|
      merged[bucket] = (merged[bucket] || []).concat(Array(messages))
    end
  end

  result = {}
  merged.sort.each do |k, v|
    result[k] = v.sort
  end

  begin
    File.write(base_path, JSON.pretty_generate(result))
  rescue Errno::EACCES => e
    raise "Cannot write to #{base_path}: #{e.message}"
  end

  shard_files.each { |f| File.delete(f) } if delete_shards

  { shards: shard_files.size, result: result }
end