Module: Fluent::Mixin::ConfigPlaceholders
- Defined in:
- lib/fluent/mixin/config_placeholders.rb
Constant Summary collapse
- PLACEHOLDERS_DEFAULT =
and :percent
[ :dollar, :underscore ]
Instance Attribute Summary collapse
-
#hostname ⇒ Object
Returns the value of attribute hostname.
Instance Method Summary collapse
- #check_element(map, c) ⇒ Object
- #configure(conf) ⇒ Object
- #has_replace_pattern?(value) ⇒ Boolean
- #replace(map, value) ⇒ Object
- #uuid_hostname(hostname) ⇒ Object
-
#uuid_random ⇒ Object
$uuid:timestamp , %uuid:timestamp , UUID_TIMESTAMP UUIDTools::UUID.timestamp_create => #<UUID:0x2adfdc UUID:64a5189c-25b3-11da-a97b-00c04fd430c8>.
- #uuid_timestamp ⇒ Object
Instance Attribute Details
#hostname ⇒ Object
Returns the value of attribute hostname.
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# File 'lib/fluent/mixin/config_placeholders.rb', line 7 def hostname @hostname end |
Instance Method Details
#check_element(map, c) ⇒ Object
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# File 'lib/fluent/mixin/config_placeholders.rb', line 92 def check_element(map,c) c.arg = replace(map, c.arg) c.keys.each do |k| v = c.fetch(k, nil) if v and v.is_a? String c[k] = replace(map, v) end end c.elements.each{|e| check_element(map,e)} end |
#configure(conf) ⇒ Object
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# File 'lib/fluent/mixin/config_placeholders.rb', line 47 def configure(conf) # Element#has_key? inserts key name into 'used' list, so we should not use that method... hostname = if conf.keys.include?('hostname') && has_replace_pattern?( conf.fetch('hostname') ) `hostname`.chomp elsif conf.keys.include?('hostname') conf['hostname'] else `hostname`.chomp end placeholders = self.respond_to?(:placeholders) ? self.placeholders : PLACEHOLDERS_DEFAULT mapping = {} placeholders.each do |p| case p when :dollar mapping.update({ '${hostname}' => lambda{ hostname }, '${uuid}' => lambda{ uuid_random() }, '${uuid:random}' => lambda{ uuid_random() }, '${uuid:hostname}' => lambda{ uuid_hostname(hostname) }, '${uuid:timestamp}' => lambda{ () }, }) when :percent mapping.update({ '%{hostname}' => lambda{ hostname }, '%{uuid}' => lambda{ uuid_random() }, '%{uuid:random}' => lambda{ uuid_random() }, '%{uuid:hostname}' => lambda{ uuid_hostname(hostname) }, '%{uuid:timestamp}' => lambda{ () }, }) when :underscore mapping.update({ '__HOSTNAME__' => lambda{ hostname }, '__UUID__' => lambda{ uuid_random() }, '__UUID_RANDOM__' => lambda{ uuid_random() }, '__UUID_HOSTNAME__' => lambda{ uuid_hostname(hostname) }, '__UUID_TIMESTAMP__' => lambda{ () }, }) else raise ArgumentError, "unknown placeholder format: #{p}" end end def check_element(map,c) c.arg = replace(map, c.arg) c.keys.each do |k| v = c.fetch(k, nil) if v and v.is_a? String c[k] = replace(map, v) end end c.elements.each{|e| check_element(map,e)} end check_element(mapping,conf) super end |
#has_replace_pattern?(value) ⇒ Boolean
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# File 'lib/fluent/mixin/config_placeholders.rb', line 41 def has_replace_pattern?(value) value =~ /\$\{(?:hostname|uuid:[a-z]+)\}/ || value =~ /\%\{(?:hostname|uuid:[a-z]+)\}/ || value =~ /__(?:HOSTNAME|UUID_[A-Z]+)__/ end |
#replace(map, value) ⇒ Object
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# File 'lib/fluent/mixin/config_placeholders.rb', line 37 def replace(map, value) map.reduce(value){|r,p| r.gsub(p[0], p[1].call())} end |
#uuid_hostname(hostname) ⇒ Object
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# File 'lib/fluent/mixin/config_placeholders.rb', line 29 def uuid_hostname(hostname) UUIDTools::UUID.sha1_create(UUIDTools::UUID_DNS_NAMESPACE, hostname).to_s end |
#uuid_random ⇒ Object
$uuid:timestamp , %uuid:timestamp , UUID_TIMESTAMP UUIDTools::UUID.timestamp_create
> #<UUID:0x2adfdc UUID:64a5189c-25b3-11da-a97b-00c04fd430c8>
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# File 'lib/fluent/mixin/config_placeholders.rb', line 25 def uuid_random UUIDTools::UUID.random_create.to_s end |
#uuid_timestamp ⇒ Object
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# File 'lib/fluent/mixin/config_placeholders.rb', line 33 def UUIDTools::UUID..to_s end |