Class: LogStash::Inputs::S3

Inherits:
Base
  • Object
show all
Includes:
PluginMixins::AwsConfig::V2
Defined in:
lib/logstash/inputs/s3.rb

Overview

Files ending in ‘.gz` are handled as gzip’ed files.

Defined Under Namespace

Modules: SinceDB

Instance Method Summary collapse

Instance Method Details

#backup_to_bucket(object) ⇒ Object

def fetch_new_files



155
156
157
158
159
160
161
162
163
 
# File 'lib/logstash/inputs/s3.rb', line 155

def backup_to_bucket(object)
  unless @backup_to_bucket.nil?
    backup_key = "#{@backup_add_prefix}#{object.key}"
    @backup_bucket.object(backup_key).copy_from(:copy_source => "#{object.bucket_name}/#{object.key}")
    if @delete
      object.delete()
    end
  end
end

#backup_to_dir(filename) ⇒ Object 



165
166
167
168
169
 
# File 'lib/logstash/inputs/s3.rb', line 165

def backup_to_dir(filename)
  unless @backup_to_dir.nil?
    FileUtils.cp(filename, @backup_to_dir)
  end
end

#list_new_files ⇒ Object

def run



128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
 
# File 'lib/logstash/inputs/s3.rb', line 128

def list_new_files
  objects = {}
  found = false
  begin
    @s3bucket.objects(:prefix => @prefix).each do |log|
      found = true
      @logger.debug('Found key', :key => log.key)
      if ignore_filename?(log.key)
        @logger.debug('Ignoring', :key => log.key)
      elsif log.content_length <= 0
        @logger.debug('Object Zero Length', :key => log.key)
      elsif !sincedb.newer?(log.last_modified)
        @logger.debug('Object Not Modified', :key => log.key)
      elsif (log.storage_class == 'GLACIER' || log.storage_class == 'DEEP_ARCHIVE') && !file_restored?(log.object)
        @logger.debug('Object Archived to Glacier', :key => log.key)
      else
        objects[log.key] = log.last_modified
        @logger.debug("Added to objects[]", :key => log.key, :length => objects.length)
      end
    end
    @logger.info('No files found in bucket', :prefix => prefix) unless found
  rescue Aws::Errors::ServiceError => e
    @logger.error("Unable to list objects in bucket", :exception => e.class, :message => e.message, :backtrace => e.backtrace, :prefix => prefix)
  end
  objects.keys.sort {|a,b| objects[a] <=> objects[b]}
end

#process_files(queue) ⇒ Object 



171
172
173
174
175
176
177
178
179
180
181
 
# File 'lib/logstash/inputs/s3.rb', line 171

def process_files(queue)
  objects = list_new_files

  objects.each do |key|
    if stop?
      break
    else
      process_log(queue, key)
    end
  end
end

#register ⇒ Object 



89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
 
# File 'lib/logstash/inputs/s3.rb', line 89

def register
  require "fileutils"
  require "digest/md5"
  require "aws-sdk-resources"

  @logger.info("Registering", :bucket => @bucket, :region => @region)

  s3 = get_s3object

  @s3bucket = s3.bucket(@bucket)

  unless @backup_to_bucket.nil?
    @backup_bucket = s3.bucket(@backup_to_bucket)
    begin
      s3.client.head_bucket({ :bucket => @backup_to_bucket})
    rescue Aws::S3::Errors::NoSuchBucket
      s3.create_bucket({ :bucket => @backup_to_bucket})
    end
  end

  unless @backup_to_dir.nil?
    Dir.mkdir(@backup_to_dir, 0700) unless File.exists?(@backup_to_dir)
  end

  FileUtils.mkdir_p(@temporary_directory) unless Dir.exist?(@temporary_directory)

  if !@watch_for_new_files && original_params.include?('interval')
    logger.warn("`watch_for_new_files` has been disabled; `interval` directive will be ignored.")
  end
end

#run(queue) ⇒ Object 



120
121
122
123
124
125
126
 
# File 'lib/logstash/inputs/s3.rb', line 120

def run(queue)
  @current_thread = Thread.current
  Stud.interval(@interval) do
    process_files(queue)
    stop unless @watch_for_new_files
  end
end

#stop ⇒ Object

def process_files



183
184
185
186
187
188
 
# File 'lib/logstash/inputs/s3.rb', line 183

def stop
  # @current_thread is initialized in the `#run` method,
  # this variable is needed because the `#stop` is a called in another thread
  # than the `#run` method and requiring us to call stop! with a explicit thread.
  Stud.stop!(@current_thread)
end