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Add Fluentd::Agent::Common#parse_config
Signed-off-by: Kenji Okimoto <okimoto@clear-code.com>
This commit is contained in:
Kenji Okimoto
parent
7615eaeb0b
commit
5a31d9b9d0
@ -18,6 +18,8 @@
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# - https://github.com/treasure-data/omnibus-td-agent/blob/master/templates/etc/systemd/td-agent.service.erb#L14
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# fluentd: /etc/fluent/fluent.conf (created by fluentd -s)
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require "strscan"
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class Fluentd
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class Agent
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module Common
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@ -142,6 +144,39 @@ class Fluentd
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FileUtils.rm(file) if File.exist? file
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end
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end
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def parse_config(config_content)
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scanner = StringScanner.new(config_content)
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contents = Hash.new {|h, k| h[k] = [] }
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until scanner.eos? do
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started = scanner.pos
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header = scanner.scan_until(/^<(source|filter|match|label)/)
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section_type = scanner[1]
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break unless header
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case section_type
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when "source", "filter", "match"
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current_source = header + scanner.scan_until(%r{^</(?:source|filter|match)>})
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contents[section_type] << { pos: started, content: current_source.strip }
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when "label"
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scanner.scan(/ ([^\s]+?)>/)
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label = scanner[1]
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sections = Hash.new {|h, k| h[k] = [] }
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loop do
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break if scanner.match?(%r{\s+?</label>})
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section_pos = scanner.pos
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section_header = scanner.scan_until(/^\s*<(filter|match)/)
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section_type = scanner[1]
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section_source = section_header + scanner.scan_until(%r{^\s*</(?:filter|match)>})
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sections[section_type] << { pos: section_pos ,content: section_source.sub(/\n/, "")}
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end
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scanner.scan_until(%r{^</label>})
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contents["label:#{label}"] << { pos: started, sections: sections }
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else
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raise TypeError, "Unknown section: #{started}: #{section_type}"
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end
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end
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contents
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end
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end
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end
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end
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170
test/models/fluentd/agent_common_test.rb
Normal file
170
test/models/fluentd/agent_common_test.rb
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@ -0,0 +1,170 @@
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require "test_helper"
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class Fluentd
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class TestAgentCommon < ActiveSupport::TestCase
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class DummyAgent
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include ::Fluentd::Agent::Common
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end
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setup do
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@agent = DummyAgent.new
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end
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sub_test_case "#parse_config" do
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test "empty" do
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actual = @agent.__send__(:parse_config, "")
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assert_equal({}, actual)
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end
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test "simple" do
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actual = @agent.__send__(:parse_config, fixture_content("config/simple.conf"))
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source_section_content = <<-CONFIG.strip_heredoc.chomp
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<source>
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@type dummy
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tag dummy
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</source>
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CONFIG
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filter_section_content = <<-CONFIG.strip_heredoc.chomp
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<filter dummy>
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@type stdout
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</filter>
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CONFIG
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match_section_content = <<-CONFIG.strip_heredoc.chomp
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<match dummy>
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@type stdout
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</match>
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CONFIG
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expected = {
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"source" => [
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{ pos: 0, content: source_section_content }
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],
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"filter" => [
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{ pos: 44, content: filter_section_content }
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],
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"match" => [
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{ pos: 84, content: match_section_content }
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]
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}
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assert_equal(expected, actual)
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end
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test "simple label" do
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actual = @agent.__send__(:parse_config, fixture_content("config/label.conf"))
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source_section_content = <<-CONFIG.strip_heredoc.chomp
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<source>
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@type dummy
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tag dummy
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@label @INPUT
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</source>
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CONFIG
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filter_section_content = <<-CONFIG.chomp
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<filter dummy>
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@type stdout
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</filter>
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CONFIG
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match_section_content = <<-CONFIG.chomp
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<match dummy>
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@type stdout
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</match>
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CONFIG
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sections = {
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"filter" => [
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{ pos: 75, content: filter_section_content}
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],
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"match" => [
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{ pos: 121, content: match_section_content}
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]
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}
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expected = {
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"source" => [
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{ pos: 0, content: source_section_content }
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],
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"label:@INPUT" => [
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{ pos: 60, sections: sections }
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]
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}
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assert_equal(expected, actual)
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end
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test "multiple labels" do
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actual = @agent.__send__(:parse_config, fixture_content("config/multi-label.conf"))
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source_section_content1 = <<-CONFIG.strip_heredoc.chomp
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<source>
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@type dummy
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tag dummy1
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@label @INPUT
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</source>
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CONFIG
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source_section_content2 = <<-CONFIG.strip_heredoc.chomp
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<source>
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@type dummy
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tag dummy2
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@label @INPUT
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</source>
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CONFIG
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filter_section_content = <<-CONFIG.chomp
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<filter dummy1>
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@type stdout
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</filter>
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CONFIG
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match_section_content = <<-CONFIG.chomp
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<match dummy1>
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@type relabel
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@label @MAIN
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</match>
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CONFIG
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input_sections = {
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"filter" => [
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{ pos: 140, content: filter_section_content }
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],
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"match" => [
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{ pos: 187, content: match_section_content }
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]
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}
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filter_secion_content1 = <<-CONFIG.chomp
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<filter dummy1>
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@type stdout
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</filter>
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CONFIG
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filter_secion_content2 = <<-CONFIG.chomp
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<filter dummy2>
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@type stdout
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</filter>
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CONFIG
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match_secion_content1 = <<-CONFIG.chomp
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<match dummy1>
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@type stdout
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</match>
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CONFIG
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match_secion_content2 = <<-CONFIG.chomp
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<match dummy2>
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@type stdout
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</match>
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CONFIG
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main_sections = {
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"filter" => [
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{ pos: 274, content: filter_secion_content1 },
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{ pos: 321, content: filter_secion_content2 }
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],
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"match" => [
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{ pos: 368, content: match_secion_content1 },
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{ pos: 413, content: match_secion_content2 }
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]
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}
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expected = {
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"source" => [
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{ pos: 0, content: source_section_content1 },
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{ pos: 61, content: source_section_content2 },
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],
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"label:@INPUT" => [
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{ pos: 124, sections: input_sections }
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],
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"label:@MAIN" => [
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{ pos: 259, sections: main_sections }
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]
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}
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assert_equal(expected, actual)
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end
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end
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end
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end
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@ -18,6 +18,10 @@ module FixturePath
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def fixture_path(fixture_name)
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Rails.root.join("test/fixtures", fixture_name).to_s
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end
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def fixture_content(fixture_name)
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Rails.root.join("test/fixtures", fixture_name).read
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end
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end
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class ActiveSupport::TestCase
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