Class: OpenNebula::DocumentJSON

Inherits:
Document show all
Defined in:
lib/opennebula/document_json.rb

Direct Known Subclasses

Service, ServiceTemplate

Constant Summary collapse

TEMPLATE_TAG = 
"BODY"

Constants inherited from Document

OpenNebula::Document::DOCUMENT_METHODS

Instance Attribute Summary

Attributes inherited from PoolElement

#name

Instance Method Summary collapse

Methods inherited from Document

build_xml, #chmod, #chmod_octet, #chown, #clone, #delete, #document_type, #gid, #initialize, #owner_id, #public?, #rename

Methods inherited from PoolElement

#id, new_with_id, #replace, #to_str

Methods inherited from XMLElement

#[], #add_element, #attr, build_xml, #delete_element, #each, #each_xpath, #element_xml, #has_elements?, #initialize, #initialize_xml, #name, #retrieve_elements, #retrieve_xmlelements, #set_content, #template_like_str, #template_str, #template_xml, #text, #to_hash, #to_xml, #xml_nil?

Constructor Details

This class inherits a constructor from OpenNebula::Document

Instance Method Details

#allocate(template_json, name = nil, tag = nil) ⇒ nil, OpenNebula::Error

Allocate a new Document containing the json inside the TEMPLATE

Parameters:

  • template_json (String) —

    json to be inserted in the TEMPLATE of the new resource

  • name (String, nil) (defaults to: nil) —

    name of the object, this value will be processed by the OpenNebula core

Returns:



43
44
45
46
47
48
49
 
# File 'lib/opennebula/document_json.rb', line 43

def allocate(template_json, name = nil, tag = nil)
    @tag = tag if tag

    text = build_template_xml(template_json, name)

    super(text)
end

#allocate_xml(xml) ⇒ Object

Allocate XML Document

Parameters:

  • xml (String) —

    XML document content



54
55
56
 
# File 'lib/opennebula/document_json.rb', line 54

def allocate_xml(xml)
    super(xml)
end

#build_template_xml(template_json, name = nil, plain = nil) ⇒ String

Build an xml string incluiding the provided json

Parameters:

  • template_json (String) —

    The template to be inserted

  • name (String, nil) (defaults to: nil) —

    The string to be inserted as name

  • plain (String, nil) (defaults to: nil) —

    information to add to the document

Returns:

  • (String) —

    The xml containing the json



158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
 
# File 'lib/opennebula/document_json.rb', line 158

def build_template_xml(template_json, name = nil, plain = nil)
    template_json ||= ""
    plain         ||= @plain
    plain           = plain.to_json if plain && !(plain.is_a? String)

    text = "<TEMPLATE>"

    text << "<NAME>#{name}</NAME>" if name
    text << "<PLAIN><![CDATA[#{plain}]]></PLAIN>" if plain

    text << "<#{template_tag}>"
    text << "<![CDATA[#{template_json}]]>"
    text << "</#{template_tag}>"

    text << "</TEMPLATE>"

    text
end

#info(decrypt = false) ⇒ nil, OpenNebula::Error Also known as: info!

Retrieves the information of the Service and all its Nodes.

Returns:



63
64
65
66
67
68
69
70
 
# File 'lib/opennebula/document_json.rb', line 63

def info(decrypt = false)
    rc = super(decrypt)
    if OpenNebula.is_error?(rc)
        return rc
    end

    load_body
end

#load_body ⇒ Object

Fill the @body hash with the values of the template



127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
 
# File 'lib/opennebula/document_json.rb', line 127

def load_body
    body_str = self["TEMPLATE/#{template_tag}"]

    if body_str
        begin
            @body = JSON.parse(body_str)
        rescue JSON::JSONError
            return OpenNebula::Error.new($!)
        end
    end

    plain_str = self['TEMPLATE/PLAIN']

    if plain_str
        begin
            @plain = JSON.parse(plain_str)
        rescue JSON::JSONError
            return OpenNebula::Error.new($!)
        end
    end

    return nil
end

#template_tag ⇒ Object

Returns current template tag



26
27
28
29
30
31
32
 
# File 'lib/opennebula/document_json.rb', line 26

def template_tag
    if @tag
        @tag
    else
        TEMPLATE_TAG
    end
end

#to_json(pretty_generate = true) ⇒ String

Generates a json representing the object

Parameters:

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

Returns:

  • (String) —

    json representing the object



109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
 
# File 'lib/opennebula/document_json.rb', line 109

def to_json(pretty_generate=true)
    hash = self.to_hash

    body = hash['DOCUMENT']['TEMPLATE']["#{template_tag}"]
    if body
        body_hash = JSON.parse(body)
        hash['DOCUMENT']['TEMPLATE']["#{template_tag}"] = body_hash
    end

    if pretty_generate
        JSON.pretty_generate hash
    else
        hash.to_json
    end
end

#update(template_json = nil, append = false) ⇒ nil, OpenNebula::Error

Updates the current state of this Service in the OpenNebula DB

Parameters:

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

    True to append new attributes instead of replace the whole template

Returns:



84
85
86
87
88
89
90
 
# File 'lib/opennebula/document_json.rb', line 84

def update(template_json=nil, append=false)
    template_json ||= @body.to_json

    text = build_template_xml(template_json)

    super(text, append)
end

#update_raw(template_raw, append = false) ⇒ nil, OpenNebula::Error

Replaces the raw template contents

Parameters:

  • template (String) —

    New template contents, in the form KEY = VAL

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

    True to append new attributes instead of replace the whole template

Returns:



100
101
102
 
# File 'lib/opennebula/document_json.rb', line 100

def update_raw(template_raw, append=false)
    super(template_raw, append)
end