Class: RCAP::Base::Alert

Inherits:
Object
  • Object
show all
Includes:
Validation
Defined in:
lib/rcap/base/alert.rb

Direct Known Subclasses

CAP_1_0::Alert, CAP_1_1::Alert, CAP_1_2::Alert

Constant Summary

STATUS_ACTUAL = 
"Actual"
STATUS_EXERCISE = 
"Exercise"
STATUS_SYSTEM = 
"System"
STATUS_TEST = 
"Test"
VALID_STATUSES =

Valid values for status

[ STATUS_ACTUAL, STATUS_EXERCISE, STATUS_SYSTEM, STATUS_TEST ]
MSG_TYPE_ALERT = 
"Alert"
MSG_TYPE_UPDATE = 
"Update"
MSG_TYPE_CANCEL = 
"Cancel"
MSG_TYPE_ACK = 
"Ack"
MSG_TYPE_ERROR = 
"Error"
VALID_MSG_TYPES =

Valid values for msg_type

[ MSG_TYPE_ALERT, MSG_TYPE_UPDATE, MSG_TYPE_CANCEL, MSG_TYPE_ACK, MSG_TYPE_ERROR ]
SCOPE_PUBLIC = 
"Public"
SCOPE_RESTRICTED = 
"Restricted"
SCOPE_PRIVATE = 
"Private"
VALID_SCOPES =

Valid values for scope

[ SCOPE_PUBLIC, SCOPE_PRIVATE, SCOPE_RESTRICTED ]
XML_ELEMENT_NAME = 
'alert'
IDENTIFIER_ELEMENT_NAME = 
'identifier'
SENDER_ELEMENT_NAME = 
'sender'
SENT_ELEMENT_NAME = 
'sent'
STATUS_ELEMENT_NAME = 
'status'
MSG_TYPE_ELEMENT_NAME = 
'msgType'
SOURCE_ELEMENT_NAME = 
'source'
SCOPE_ELEMENT_NAME = 
'scope'
RESTRICTION_ELEMENT_NAME = 
'restriction'
ADDRESSES_ELEMENT_NAME = 
'addresses'
CODE_ELEMENT_NAME = 
'code'
NOTE_ELEMENT_NAME = 
'note'
REFERENCES_ELEMENT_NAME = 
'references'
INCIDENTS_ELEMENT_NAME = 
'incidents'
XPATH = 
'cap:alert'
IDENTIFIER_XPATH = 
"cap:#{ IDENTIFIER_ELEMENT_NAME }"
SENDER_XPATH = 
"cap:#{ SENDER_ELEMENT_NAME }"
SENT_XPATH = 
"cap:#{ SENT_ELEMENT_NAME }"
STATUS_XPATH = 
"cap:#{ STATUS_ELEMENT_NAME }"
MSG_TYPE_XPATH = 
"cap:#{ MSG_TYPE_ELEMENT_NAME }"
SOURCE_XPATH = 
"cap:#{ SOURCE_ELEMENT_NAME }"
SCOPE_XPATH = 
"cap:#{ SCOPE_ELEMENT_NAME }"
RESTRICTION_XPATH = 
"cap:#{ RESTRICTION_ELEMENT_NAME }"
ADDRESSES_XPATH = 
"cap:#{ ADDRESSES_ELEMENT_NAME }"
CODE_XPATH = 
"cap:#{ CODE_ELEMENT_NAME }"
NOTE_XPATH = 
"cap:#{ NOTE_ELEMENT_NAME }"
REFERENCES_XPATH = 
"cap:#{ REFERENCES_ELEMENT_NAME }"
INCIDENTS_XPATH = 
"cap:#{ INCIDENTS_ELEMENT_NAME }"
CAP_VERSION_YAML = 
"CAP Version"
IDENTIFIER_YAML = 
"Identifier"
SENDER_YAML = 
"Sender"
SENT_YAML = 
"Sent"
STATUS_YAML = 
"Status"
MSG_TYPE_YAML = 
"Message Type"
SOURCE_YAML = 
"Source"
SCOPE_YAML = 
"Scope"
RESTRICTION_YAML = 
"Restriction"
ADDRESSES_YAML = 
"Addresses"
CODES_YAML = 
"Codes"
NOTE_YAML = 
"Note"
REFERENCES_YAML = 
"References"
INCIDENTS_YAML = 
"Incidents"
INFOS_YAML = 
"Information"
CAP_VERSION_KEY = 
'cap_version'
IDENTIFIER_KEY = 
'identifier'
SENDER_KEY = 
'sender'
SENT_KEY = 
'sent'
STATUS_KEY = 
'status'
MSG_TYPE_KEY = 
'msg_type'
SOURCE_KEY = 
'source'
SCOPE_KEY = 
'scope'
RESTRICTION_KEY = 
'restriction'
ADDRESSES_KEY = 
'addresses'
CODES_KEY = 
'codes'
NOTE_KEY = 
'note'
REFERENCES_KEY = 
'references'
INCIDENTS_KEY = 
'incidents'
INFOS_KEY = 
'infos'

Instance Attribute Summary (collapse)

Class Method Summary (collapse)

Instance Method Summary (collapse)

Constructor Details

- (Alert) initialize {|alert| ... }

Initialises a new Alert object. Yields the initialised alert to a block.

Examples:

alert = RCAP::CAP_1_2::Alert.new do |alert|
          alert.sender = alerts@example.org
          alert.status = Alert::STATUS_ACTUAL
          alert.msg_type = Alert::MSG_TYPE_ALERT
          alert.scope = Alert::SCOPE_PUBLIC
        end

Yield Parameters:

  • alert (Alert) —

    The newly initialised Alert.



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# File 'lib/rcap/base/alert.rb', line 83

def initialize
  @identifier  = RCAP.generate_identifier
  @addresses   = []
  @codes       = []
  @references  = []
  @incidents   = []
  @infos       = []
  yield( self ) if block_given?
end

Instance Attribute Details

- (Array<String>) addresses (readonly)

Collection of address strings. Depends on scope being SCOPE_PRIVATE

Returns:



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# File 'lib/rcap/base/alert.rb', line 47

def addresses
  @addresses
end

- (Array<String>) codes (readonly)

Returns:



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# File 'lib/rcap/base/alert.rb', line 49

def codes
  @codes
end

- (String) identifier

If not set a UUID will be set by default on object initialisation

Returns:

  • (String) —

    If not set a UUID will be set by default on object initialisation



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# File 'lib/rcap/base/alert.rb', line 28

def identifier
  @identifier
end

- (Array<String>) incidents (readonly)

Collection of incident strings

Returns:



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# File 'lib/rcap/base/alert.rb', line 54

def incidents
  @incidents
end

- (Array<Info>) infos (readonly)

Returns:



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# File 'lib/rcap/base/alert.rb', line 56

def infos
  @infos
end

- (String) msg_type

Can only be one of VALID_MSG_TYPES

Returns:



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# File 'lib/rcap/base/alert.rb', line 36

def msg_type
  @msg_type
end

- (String) note

Returns:



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# File 'lib/rcap/base/alert.rb', line 44

def note
  @note
end

- (Array<String>) references (readonly)

Collection of references to previous alerts

Returns:

  • (Array<String>) —

    Collection of references to previous alerts

See Also:



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# File 'lib/rcap/base/alert.rb', line 52

def references
  @references
end

- (String) restriction

Required if scope is SCOPE_RESTRICTED

Returns:



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# File 'lib/rcap/base/alert.rb', line 42

def restriction
  @restriction
end

- (String) scope

Can only be one of VALID_SCOPES

Returns:



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# File 'lib/rcap/base/alert.rb', line 38

def scope
  @scope
end

- (String) sender

Returns:



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# File 'lib/rcap/base/alert.rb', line 30

def sender
  @sender
end

- (DateTime) sent

If not set will be time of creation.

Returns:

  • (DateTime) —

    If not set will be time of creation.



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# File 'lib/rcap/base/alert.rb', line 32

def sent
  @sent
end

- (String) source

Returns:



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# File 'lib/rcap/base/alert.rb', line 40

def source
  @source
end

- (String) status

Can only be one of VALID_STATUSES

Returns:



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# File 'lib/rcap/base/alert.rb', line 34

def status
  @status
end

Class Method Details

+ (RCAP::CAP_1_0::Alert) from_h(alert_hash)

Initialises an Alert object from a Hash produced by Alert#to_h

Parameters:

  • alert_hash (Hash)

Returns:



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# File 'lib/rcap/base/alert.rb', line 397

def self.from_h( alert_hash )
  self.new do |alert|
    alert.identifier  = RCAP.strip_if_given( alert_hash[ IDENTIFIER_KEY ])
    alert.sender      = RCAP.strip_if_given( alert_hash[ SENDER_KEY ])
    alert.sent        = RCAP.parse_datetime( alert_hash[ SENT_KEY ])
    alert.status      = RCAP.strip_if_given( alert_hash[ STATUS_KEY ])
    alert.msg_type    = RCAP.strip_if_given( alert_hash[ MSG_TYPE_KEY ])
    alert.source      = RCAP.strip_if_given( alert_hash[ SOURCE_KEY ])
    alert.scope       = RCAP.strip_if_given( alert_hash[ SCOPE_KEY ])
    alert.restriction = RCAP.strip_if_given( alert_hash[ RESTRICTION_KEY ])
    Array( alert_hash[ ADDRESSES_KEY ]).each do |address|
      alert.addresses << address.strip
    end
    Array( alert_hash[ CODES_KEY ]).each do |code|
      alert.codes << code.strip
    end
    alert.note = alert_hash[ NOTE_KEY ]
    Array( alert_hash[ REFERENCES_KEY ]).each do |reference|
      alert.references << reference.strip
    end

    Array( alert_hash[ INCIDENTS_KEY ]).each do |incident|
      alert.incidents << incident.strip
    end

    Array( alert_hash[ INFOS_KEY ]).each do |info_hash|
      alert.infos << alert.info_class.from_h( info_hash )
    end
  end
end

+ (Alert) from_json(json_string)

Initialises an Alert object from a JSON string produced by Alert#to_json

Parameters:

Returns:



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# File 'lib/rcap/base/alert.rb', line 444

def self.from_json( json_string )
  self.from_h( JSON.parse( json_string ))
end

+ (Alert) from_xml(xml)

Initialise an Alert object from an XML string. Any object that is a subclass of IO (e.g. File) can be passed in.

Parameters:

Returns:



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# File 'lib/rcap/base/alert.rb', line 274

def self.from_xml( xml )
  self.from_xml_document( REXML::Document.new( xml ))
end

+ (Alert) from_xml_document(xml_document)

Parameters:

  • xml_document (REXML::Document)

Returns:



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# File 'lib/rcap/base/alert.rb', line 266

def self.from_xml_document( xml_document )
  self.from_xml_element( xml_document.root )
end

+ (RCAP::CAP_1_0::Alert) from_xml_element(alert_xml_element)

Parameters:

  • alert_xml_element (REXML::Element)

Returns:



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# File 'lib/rcap/base/alert.rb', line 229

def self.from_xml_element( alert_xml_element )
  self.new do |alert|
    alert.identifier  = RCAP.xpath_text( alert_xml_element, IDENTIFIER_XPATH, alert.xmlns )
    alert.sender      = RCAP.xpath_text( alert_xml_element, SENDER_XPATH, alert.xmlns )
    alert.sent        = RCAP.parse_datetime( RCAP.xpath_text( alert_xml_element, SENT_XPATH, alert.xmlns ))
    alert.status      = RCAP.xpath_text( alert_xml_element, STATUS_XPATH, alert.xmlns )
    alert.msg_type    = RCAP.xpath_text( alert_xml_element, MSG_TYPE_XPATH, alert.xmlns )
    alert.source      = RCAP.xpath_text( alert_xml_element, SOURCE_XPATH, alert.xmlns )
    alert.scope       = RCAP.xpath_text( alert_xml_element, SCOPE_XPATH, alert.xmlns )
    alert.restriction = RCAP.xpath_text( alert_xml_element, RESTRICTION_XPATH, alert.xmlns )

    RCAP.unpack_if_given( RCAP.xpath_text( alert_xml_element, ADDRESSES_XPATH, alert.xmlns )).each do |address|
      alert.addresses << address.strip
    end

    RCAP.xpath_match( alert_xml_element, CODE_XPATH, alert.xmlns ).each do |element|
      alert.codes << element.text.strip
    end

    alert.note = RCAP.xpath_text( alert_xml_element, NOTE_XPATH, alert.xmlns )

    RCAP.unpack_if_given( RCAP.xpath_text( alert_xml_element, REFERENCES_XPATH, alert.xmlns )).each do |reference|
      alert.references << reference.strip
    end

    RCAP.unpack_if_given( RCAP.xpath_text( alert_xml_element, INCIDENTS_XPATH, alert.xmlns )).each do |incident|
      alert.incidents << incident.strip
    end

    RCAP.xpath_match( alert_xml_element, Info::XPATH, alert.xmlns ).each do |element|
      alert.infos << alert.info_class.from_xml_element( element )
    end
  end
end

+ (Alert) from_yaml(yaml)

Initialise an Alert object from a YAML string. Any object that is a subclass of IO (e.g. File) can be passed in.

Parameters:

Returns:



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# File 'lib/rcap/base/alert.rb', line 319

def self.from_yaml( yaml )
  self.from_yaml_data( YAML.load( yaml ))
end

+ (Alert) from_yaml_data(alert_yaml_data)

Initialise an Alert object from a hash reutrned from YAML.load.

Parameters:

  • alert_yaml_data (hash)

Returns:



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# File 'lib/rcap/base/alert.rb', line 327

def self.from_yaml_data( alert_yaml_data )
  self.new do |alert|
    alert.identifier  = RCAP.strip_if_given( alert_yaml_data[ IDENTIFIER_YAML ])
    alert.sender      = RCAP.strip_if_given( alert_yaml_data[ SENDER_YAML ])
    alert.sent        = RCAP.parse_datetime( alert_yaml_data[ SENT_YAML ])
    alert.status      = RCAP.strip_if_given( alert_yaml_data[ STATUS_YAML ])
    alert.msg_type    = RCAP.strip_if_given( alert_yaml_data[ MSG_TYPE_YAML ])
    alert.source      = RCAP.strip_if_given( alert_yaml_data[ SOURCE_YAML ])
    alert.scope       = RCAP.strip_if_given( alert_yaml_data[ SCOPE_YAML ])
    alert.restriction = RCAP.strip_if_given( alert_yaml_data[ RESTRICTION_YAML ])
    Array( alert_yaml_data[ ADDRESSES_YAML ]).each do |address|
      alert.addresses << address.strip
    end
    Array( alert_yaml_data[ CODES_YAML ]).each do |code|
      alert.codes << code.strip
    end
    alert.note        = alert_yaml_data[ NOTE_YAML ]
    Array( alert_yaml_data[ REFERENCES_YAML ]).each do |reference|
      alert.references << reference.strip
    end
    Array( alert_yaml_data[ INCIDENTS_YAML ]).each do |incident|
      alert.incidents << incident.strip
    end
    Array( alert_yaml_data[ INFOS_YAML ]).each do |info_yaml_data|
      alert.infos <<  alert.info_class.from_yaml_data( info_yaml_data )
    end
  end
end

Instance Method Details

- (Info) add_info {|Info| ... }

Creates a new Info object and adds it to the #infos array.

Yields:

  • (Info) —

    The newly initialised Info object.

Returns:

  • (Info) —

    The initialised Info object after being yielded to the block

See Also:



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# File 'lib/rcap/base/alert.rb', line 98

def add_info
  self.info_class.new.tap do |info|
    yield( info ) if block_given?
    @infos << info
  end
end

- (String) inspect

Returns:



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# File 'lib/rcap/base/alert.rb', line 182

def inspect
  alert_inspect = [ "CAP Version:  #{ self.class::CAP_VERSION }",
                    "Identifier:   #{ @identifier }",
                    "Sender:       #{ @sender }",
                    "Sent:         #{ @sent }",
                    "Status:       #{ @status }",
                    "Message Type: #{ @msg_type }",
                    "Source:       #{ @source }",
                    "Scope:        #{ @scope }",
                    "Restriction:  #{ @restriction }",
                    "Addresses:    #{ @addresses.to_s_for_cap }",
                    "Codes:",
                    @codes.map{ |code| "  " + code }.join("\n")+"",
                    "Note:         #{ @note }",
                    "References:   #{ @references.join( ' ' )}",
                    "Incidents:    #{ @incidents.join( ' ')}",
                    "Information:",
                    @infos.map{ |info| "  " + info.to_s }.join( "\n" )].join( "\n" )
  RCAP.format_lines_for_inspect( 'ALERT', alert_inspect )
end

- (Hash) to_h

Returns a Hash representation of an Alert object

Returns:

  • (Hash) 


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# File 'lib/rcap/base/alert.rb', line 375

def to_h
  RCAP.attribute_values_to_hash( [ CAP_VERSION_KEY, self.class::CAP_VERSION ],
                                 [ IDENTIFIER_KEY,  @identifier ],
                                 [ SENDER_KEY,      @sender ],
                                 [ SENT_KEY,        RCAP.to_s_for_cap( @sent )],
                                 [ STATUS_KEY,      @status ],
                                 [ MSG_TYPE_KEY,    @msg_type ],
                                 [ SOURCE_KEY,      @source ],
                                 [ SCOPE_KEY,       @scope ],
                                 [ RESTRICTION_KEY, @restriction ],
                                 [ ADDRESSES_KEY,   @addresses ],
                                 [ CODES_KEY,       @codes ],
                                 [ NOTE_KEY,        @note ],
                                 [ REFERENCES_KEY,  @references ],
                                 [ INCIDENTS_KEY,   @incidents ],
                                 [ INFOS_KEY,       @infos.map{ |info| info.to_h  }])
end

- (String) to_json(pretty_print = false)

Returns a JSON string representation of an Alert object

Parameters:

  • pretty_print (true, false) (defaults to: false)

Returns:



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# File 'lib/rcap/base/alert.rb', line 432

def to_json( pretty_print = false )
  if pretty_print
    JSON.pretty_generate( self.to_h )
  else
    self.to_h.to_json
  end
end

- (String) to_reference

Returns a string representation of the alert suitable for usage as a reference in a CAP message of the form

sender,identifier,sent

Returns:



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# File 'lib/rcap/base/alert.rb', line 177

def to_reference
  "#{ @sender },#{ @identifier },#{ RCAP.to_s_for_cap( @sent )}"
end

- (String) to_s

Returns a string representation of the alert of the form

sender/identifier/sent

See #to_reference for another string representation suitable as a CAP reference.

Returns:



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# File 'lib/rcap/base/alert.rb', line 208

def to_s
  "#{ @sender }/#{ @identifier }/#{ RCAP.to_s_for_cap( @sent )}"
end

- (String) to_xml(pretty_print = false)

Returns a string containing the XML representation of the alert.

Parameters:

  • pretty_print (true, false) (defaults to: false) —

    Pretty print output

Returns:



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# File 'lib/rcap/base/alert.rb', line 163

def to_xml( pretty_print = false )
  if pretty_print
    xml_document = ""
    RCAP::XML_PRETTY_PRINTER.write( self.to_xml_document, xml_document )
    xml_document
  else
    self.to_xml_document.to_s
  end
end

- (REXML::Document) to_xml_document

Returns:

  • (REXML::Document) 


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# File 'lib/rcap/base/alert.rb', line 152

def to_xml_document
  xml_document = REXML::Document.new
  xml_document.add( REXML::XMLDecl.new )
  xml_document.add( self.to_xml_element )
  xml_document
end

- (REXML::Element) to_xml_element

Returns:

  • (REXML::Element) 


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# File 'lib/rcap/base/alert.rb', line 121

def to_xml_element
  xml_element = REXML::Element.new( XML_ELEMENT_NAME )
  xml_element.add_namespace( self.class::XMLNS )
  xml_element.add_element( IDENTIFIER_ELEMENT_NAME ).add_text( @identifier )   if @identifier
  xml_element.add_element( SENDER_ELEMENT_NAME ).add_text( @sender )           if @sender
  xml_element.add_element( SENT_ELEMENT_NAME ).add_text( @sent.to_s_for_cap )  if @sent
  xml_element.add_element( STATUS_ELEMENT_NAME ).add_text( @status )           if @status
  xml_element.add_element( MSG_TYPE_ELEMENT_NAME ).add_text( @msg_type )       if @msg_type
  xml_element.add_element( SOURCE_ELEMENT_NAME ).add_text( @source )           if @source
  xml_element.add_element( SCOPE_ELEMENT_NAME ).add_text( @scope )             if @scope
  xml_element.add_element( RESTRICTION_ELEMENT_NAME ).add_text( @restriction ) if @restriction
  if @addresses.any?
    xml_element.add_element( ADDRESSES_ELEMENT_NAME ).add_text( @addresses.to_s_for_cap )
  end
  @codes.each do |code|
    xml_element.add_element( CODE_ELEMENT_NAME ).add_text( code )
  end
  xml_element.add_element( NOTE_ELEMENT_NAME ).add_text( @note ) if @note
  if @references.any?
    xml_element.add_element( REFERENCES_ELEMENT_NAME ).add_text( @references.join( ' ' ))
  end
  if @incidents.any?
    xml_element.add_element( INCIDENTS_ELEMENT_NAME ).add_text( @incidents.join( ' ' ))
  end
  @infos.each do |info|
    xml_element.add_element( info.to_xml_element )
  end
  xml_element
end

- (String) to_yaml(options = {})

Returns a string containing the YAML representation of the alert.

Returns:



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# File 'lib/rcap/base/alert.rb', line 297

def to_yaml( options = {} )
  RCAP.attribute_values_to_hash( [ CAP_VERSION_YAML, self.class::CAP_VERSION ],
                                 [ IDENTIFIER_YAML,  @identifier ],
                                 [ SENDER_YAML,      @sender ],
                                 [ SENT_YAML,        @sent ],
                                 [ STATUS_YAML,      @status ],
                                 [ MSG_TYPE_YAML,    @msg_type ],
                                 [ SOURCE_YAML,      @source ],
                                 [ SCOPE_YAML,       @scope ],
                                 [ RESTRICTION_YAML, @restriction ],
                                 [ ADDRESSES_YAML,   @addresses ],
                                 [ CODES_YAML,       @codes ],
                                 [ NOTE_YAML,        @note ],
                                 [ REFERENCES_YAML,  @references ],
                                 [ INCIDENTS_YAML,   @incidents ],
                                 [ INFOS_YAML,       @infos ]).to_yaml( options )
end