IsNotFoundError returns true, if the provided error implements the NotFound interface.

NewArrayAttribute creates a new array attribute.

NewBranch creates a new branch.

NewCompareExpression creates a new compare expression.

NewCondition creates a new condition.

NewConditionExpression creates a new condition expression.

NewConfig creates a new Logstash config.

NewElseBlock creates a new else-block.

NewElseIfBlock creates a new else-if-block of a Branch.

NewHashAttribute creates a new hash attribute.

NewHashEntry creates a new hash entry for a hash attribute.

NewIfBlock creates a new if-block.

NewInExpression creates a new in expression.

NewNegativeConditionExpression creates a new negative condition expression.

NewNegativeSelectorExpression creates a new negative selector expression.

NewNotFoundError wraps an error as a not found error.

NewNotInExpression creates a new not in expression.

NewNumberAttribute creates a new number attribute.

NewPlugin creates a new plugin.

NewPluginAttribute creates a new plugin attribute.

NewPluginSection creates a new plugin section.

NewPluginSections creates an array of plugin sections.

NewRegexp creates a new Regexp.

NewRegexpExpression creates a new regexp (regular expression) expression.

NewRvalueExpression creates a new rvalue expression.

NewSelector creates a new Selector.

NewSelectorElement creates a new selector element.

NewSelectorFromNames creates a new Selector form a slice of field names.

NewStringAttribute creates a new plugin attribute of type string.

NotFoundErrorf formats according to a format specifier and returns the string as a value that satisfies NotFounder.

And is the and boolean operator.

Bareword string attribute type.

DoubleQuoted string attribute type.

Equal defines the equal operator (==).

Filter type plugin.

GreaterOrEqual defines the greater or equal operator (>=).

GreaterThan defines the greater than operator (>).

Input type plugin.

LessOrEqual defines the less or equal operator (<=).

LessThan defines the less than operator (<).

Nand is the nand boolean operator.

NoOperator is used for the first expression, which is not chained by a boolean operator.

NotEqual defines the not equal operator (!=).

Or is the or boolean operator.

Output type plugin.

RegexpMatch is the regular expression match operator (=~).

RegexpNotMatch is the regular expression not match operator (!~).

SingleQuoted string attribute type.

Undefined is a placeholder for all undefined values in all available types in this package.

Xor is the xor boolean operator.

A ArrayAttribute node represents a plugin attribute of type array.

A BooleanOperator represents a boolean operator.

A BoolExpression node represents a boolean operator.

A Branch node represents a conditional branch within a Logstash configuration.

A CompareExpression node represents a expression, which compares lvalue and rvalue based on the comparison operator.

A CompareOperator represents the comparison operator, used to compare two values.

A Condition node represents a condition used by if- or else-if-blocks.

A ConditionExpression node represents an Expression, which is enclosed in parentheses.

A Config node represents the root node of a Logstash configuration.

A ElseBlock node represents a else-block of a Branch.

A ElseIfBlock node represents an else-if-block of a Branch.

A HashAttribute node represents a plugin attribute of type hash.

A HashEntry node defines a hash entry within a hash attribute.

A IfBlock node represents an if-block of a Branch.

An InExpression node represents an in expression.

A NegativeConditionExpression node represents an Expression within parentheses, which is negated.

A NegativeSelectorExpression node represents a field selector expression, which is negated.

A NotInExpression node defines a not in expression.

A NumberAttribute node represents a plugin attribute of type number.

A Plugin node represents a Logstash plugin.

A PluginAttribute node represents a plugin attribute of type plugin.

A PluginSection node defines the configuration section with branches or plugins.

A Regexp node represents a regular expression.

A RegexpExpression node defines a regular expression node.

A RegexpOperator is an operator, used to compare a regular expression with an other value.

A RvalueExpression node defines an expression consisting only of a Rvalue.

A Selector node represents a field selector.

A SelectorElement node defines a selector element.

StringAttribute is a plugin attribute of type string.

Attribute interface combines Logstash plugin attribute types.

BranchOrPlugin interface combines Logstash configuration conditional branches and plugins.

A Commentable node is an ast node, which accepts comments.

An Expression node defines an expression.

NotFounder interface is implemented by errors, that indicate that a record is not found.

A Rvalue node represents an right (or in some cases also an left) side value of an expression.

A StringOrRegexp node is a string attribute node or a regexp node.

PluginType defines the type of a Logstash plugin, which is one of: Input, Filter or Output.

StringAttributeType defines the string format type of a string attribute.