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fluentd.rb
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fluentd.rb
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#
# Fluentd
#
# Copyright (C) 2011 FURUHASHI Sadayuki
#
# Licensed 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 'optparse'
require 'fluent/supervisor'
op = OptionParser.new
op.version = Fluent::VERSION
opts = Fluent::Supervisor.default_options
op.on('-s', "--setup [DIR=#{File.dirname(Fluent::DEFAULT_CONFIG_PATH)}]", "install sample configuration file to the directory") {|s|
opts[:setup_path] = s || File.dirname(Fluent::DEFAULT_CONFIG_PATH)
}
op.on('-c', '--config PATH', "config file path (default: #{Fluent::DEFAULT_CONFIG_PATH})") {|s|
opts[:config_path] = s
}
op.on('--dry-run', "Check fluentd setup is correct or not", TrueClass) {|b|
opts[:dry_run] = b
}
op.on('-p', '--plugin DIR', "add plugin directory") {|s|
opts[:plugin_dirs] << s
}
op.on('-I PATH', "add library path") {|s|
$LOAD_PATH << s
}
op.on('-r NAME', "load library") {|s|
opts[:libs] << s
}
op.on('-d', '--daemon PIDFILE', "daemonize fluent process") {|s|
opts[:daemonize] = s
}
op.on('--user USER', "change user") {|s|
opts[:chuser] = s
}
op.on('--group GROUP', "change group") {|s|
opts[:chgroup] = s
}
op.on('-o', '--log PATH', "log file path") {|s|
opts[:log_path] = s
}
op.on('-i', '--inline-config CONFIG_STRING', "inline config which is appended to the config file on-fly") {|s|
opts[:inline_config] = s
}
op.on('--emit-error-log-interval SECONDS', "suppress interval seconds of emit error logs") {|s|
opts[:suppress_interval] = s.to_i
}
op.on('--suppress-repeated-stacktrace', "suppress repeated stacktrace", TrueClass) {|b|
opts[:suppress_repeated_stacktrace] = b
}
op.on('--without-source', "invoke a fluentd without input plugins", TrueClass) {|b|
opts[:without_source] = b
}
op.on('--use-v1-config', "Use v1 configuration format", TrueClass) {|b|
opts[:use_v1_config] = b
}
op.on('-v', '--verbose', "increase verbose level (-v: debug, -vv: trace)", TrueClass) {|b|
if b
opts[:log_level] = [opts[:log_level] - 1, Fluent::Log::LEVEL_TRACE].max
end
}
op.on('-q', '--quiet', "decrease verbose level (-q: warn, -qq: error)", TrueClass) {|b|
if b
opts[:log_level] = [opts[:log_level] + 1, Fluent::Log::LEVEL_ERROR].min
end
}
op.on('--suppress-config-dump', "suppress config dumping when fluentd starts", TrueClass) {|b|
opts[:suppress_config_dump] = b
}
op.on('-g', '--gemfile GEMFILE', "Gemfile path") {|s|
opts[:gemfile] = s
}
op.on('-G', '--gem-path GEM_INSTALL_PATH', "Gemfile install path (default: $(dirname $gemfile)/vendor/bundle)") {|s|
opts[:gem_install_path] = s
}
(class<<self;self;end).module_eval do
define_method(:usage) do |msg|
puts op.to_s
puts "error: #{msg}" if msg
exit 1
end
end
begin
rest = op.parse(ARGV)
if rest.length != 0
usage nil
end
rescue
usage $!.to_s
end
##
## Bundler injection
#
if ENV['FLUENTD_DISABLE_BUNDLER_INJECTION'] != '1' && gemfile = opts[:gemfile]
ENV['BUNDLE_GEMFILE'] = gemfile
if path = opts[:gem_install_path]
ENV['BUNDLE_PATH'] = path
else
ENV['BUNDLE_PATH'] = File.expand_path(File.join(File.dirname(gemfile), 'vendor/bundle'))
end
ENV['FLUENTD_DISABLE_BUNDLER_INJECTION'] = '1'
load File.expand_path(File.join(File.dirname(__FILE__), 'bundler_injection.rb'))
end
if setup_path = opts[:setup_path]
require 'fileutils'
FileUtils.mkdir_p File.join(setup_path, "plugin")
confpath = File.join(setup_path, "fluent.conf")
if File.exist?(confpath)
puts "#{confpath} already exists."
else
File.open(confpath, "w") {|f|
conf = File.read File.join(File.dirname(__FILE__), "..", "..", "..", "fluent.conf")
f.write conf
}
puts "Installed #{confpath}."
end
exit 0
end
Fluent::Supervisor.new(opts).start