Class: Transform

Inherits:
Object
  • Object
show all
Defined in:
lib/transform.rb

Constant Summary collapse

NO_VALUE = 
'no'
ROWKEY = 
'RowKey'
SETTING = 
'setting'
VALUE = 
'value'
APPID = 
'AppId'
EMPTY_STR = 
''
STORAGEACCOUNT = 
'StorageAccount'
STORAGEACCOUNTKEY = 
"#{STORAGEACCOUNT}Key"
CONNECTIONSTRING = 
'connectionString'

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#config_files ⇒ Object

Returns the value of attribute config_files.



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# File 'lib/transform.rb', line 7

def config_files
  @config_files
end

#env ⇒ Object

Returns the value of attribute env.



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# File 'lib/transform.rb', line 3

def env
  @env
end

#settings ⇒ Object

Returns the value of attribute settings.



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# File 'lib/transform.rb', line 6

def settings
  @settings
end

#svc ⇒ Object

Returns the value of attribute svc.



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# File 'lib/transform.rb', line 4

def svc
  @svc
end

#table ⇒ Object

Returns the value of attribute table.



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# File 'lib/transform.rb', line 5

def table
  @table
end

Instance Method Details

#get(key) ⇒ Object 



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# File 'lib/transform.rb', line 19

def get(key)
    begin
        result = @svc.get_entity(@table, @env, key)
    rescue
        puts $!
        puts "key : #{@key}"
        puts
    end

    result
end

#get_all ⇒ Object 



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# File 'lib/transform.rb', line 31

def get_all
    begin
        query = { :filter => "PartitionKey eq '#{@env}'" }
        result = @svc.query_entities(@table, query)
    rescue
        puts $!
        puts "Env : #{@env}"
        puts
    end
    
    result    
end

#get_value(key) ⇒ Object 



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# File 'lib/transform.rb', line 44

def get_value(key)
    if (@settings.nil?)
        return
    end
    value = EMPTY_STR
    @settings.each { |i|
        if i.properties[ROWKEY] == key
            value = i.properties[SETTING]
            break
        end
    }

    value
end

#transform ⇒ Object 



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# File 'lib/transform.rb', line 229

def transform

    # --- Get environment invoked

    @env = ENV['env'] || NO_VALUE
    if @env == NO_VALUE
        puts 'Environment name required to transform. No configuration changes will be done...'
        return false
    else
        puts "Transforming config for environment: #{@env} ..."
    end

    # --- Get Settings Account Name, Key and Table from Environment variables

     = ENV['SettingsAccount'] || ENV[STORAGEACCOUNT] || NO_VALUE
    if ( == NO_VALUE)
        puts "No settings storage account name found"
        return false
    end
    settings_access_key = ENV['SettingsAccountKey'] || ENV[STORAGEACCOUNTKEY] || NO_VALUE
    if (settings_access_key == NO_VALUE)
        puts "No settings storage account key found"
        return false
    end
    config_table = ENV['ConfigSettingsTable'] || NO_VALUE
    if (config_table == NO_VALUE)
        puts "No configuration table found"
    end

    # --- Collect config files to transform

    # find all App.config and web.config files

    @config_files = Dir.glob('**/app.config')
    @config_files.concat(Dir.glob('**/appSettings.config'))
    @config_files.concat(Dir.glob('**/web.config'))
    @config_files.concat(Dir.glob('**/RuntimeWeb/*Web.dll.config'))
    @config_files.concat(Dir.glob('**/RuntimeService/*.exe.config'))

    # --- Load Settings from storage

    # azure table storage account where settings reside

    Azure.config. = 
    Azure.config.storage_access_key = settings_access_key
    @table = config_table

    # table service

    @svc = Azure::TableService.new

    # get all settings for environment

    @settings = get_all

    # --- Start Transformations ---

    puts "updating settings #{CONNECTIONSTRING}..."
    settings_connstr = "DefaultEndpointsProtocol=https;AccountName=#{settings_account_name};AccountKey=#{settings_access_key}"
    should_update_settings_connstr = ENV['should_update_settings_connstr'] || NO_VALUE
    if should_update_settings_connstr == NO_VALUE
        puts "Flag for Setttings #{CONNECTIONSTRING} Update not set."
    else
        transform_appsettings(CONNECTIONSTRING, settings_connstr)
    end

    puts "updating unit test #{CONNECTIONSTRING}..."
    unitest_connstr = ENV["unitest#{CONNECTIONSTRING}"] || NO_VALUE
    if unitest_connstr == NO_VALUE
        puts "No unit test #{CONNECTIONSTRING} found."
    else
        transform_appsettings("unitest#{CONNECTIONSTRING}", unitest_connstr)
    end

    puts "updating #{APPID}..."
    appId = ENV[APPID] || NO_VALUE
    if appId == NO_VALUE
        puts "No #{APPID} found."
    else
        transform_appsettings(APPID, appId)
    end

    @service_name = ENV['ServiceName']
    is_service = @service_name || NO_VALUE
    if is_service != NO_VALUE
        puts "Transforming config for service: #{@service_name}" 
        
        puts 'Obtaining cloud configuration templates...'
        csdefTemplate = get_value('ServiceDefinitionTemplate')
        File.write('ServiceDefinition.csdef', csdefTemplate)
        cscfgTemplate = get_value('ServiceConfigurationTemplate')
        File.write('ServiceConfiguration.cscfg', cscfgTemplate)

        puts 'Transforming csdef...'
        transform_csdef

        puts 'Transforming cscfg...'
        transform_cscfg

        puts 'Transforming diagnostics cfg...'
        transform_diagnosticscfg

        puts 'Replacing service model settings...'
        transform_servicemodelconfig
    else
        puts 'Target to transform is not a service...'
    end
    
    puts 'Replacing app settings...'
    transform_appsettings

    puts 'Removing debug compilation attributes...'
    transform_systemwebcompilationattribs

    puts 'Transforming cache client...'
    transform_cacheclient
    
    puts 'Transforming Application Insights...'
    transform_appinsights
    
    return true
end

#transform_appinsights ⇒ Object 



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# File 'lib/transform.rb', line 178

def transform_appinsights
    aiconfig = Dir.glob('**/ApplicationInsights.config')
    aiconfig.each{ |file|
        doc = Nokogiri::XML(File.read(file))

        node = doc.at_css 'InstrumentationKey'
        if (!node.nil?)
            val_from_settings = get_value('AI_InstrumentationKey')
            if (val_from_settings.to_s == EMPTY_STR)
                aikey =  ENV['AI_InstrumentationKey'] || NO_VALUE
            else
                aikey = val_from_settings
            end
            if (aikey != NO_VALUE)
                node.content = aikey
            end
        end
        
        File.write(file, doc.to_xml)
    }
end

#transform_appsettings(key = EMPTY_STR, value = EMPTY_STR) ⇒ Object 



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# File 'lib/transform.rb', line 59

def transform_appsettings(key = EMPTY_STR, value = EMPTY_STR)
    # go to each file and replace value of matching appSettings key

    @config_files.each{|file|
        doc = Nokogiri::XML(File.read(file))
        puts "Processing file: #{file}"
        if (key.to_s != EMPTY_STR && value.to_s != EMPTY_STR)
            k = key
            v = value
            update_appsetting(k, v, doc, file)
        else
            @settings.each { |i|
                k = i.properties[ROWKEY] || NO_VALUE
                v = i.properties[SETTING] || NO_VALUE
                update_appsetting(k, v, doc, file)
            }
        end
    }
end

#transform_cacheclient ⇒ Object 



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# File 'lib/transform.rb', line 215

def transform_cacheclient
    cacheclient_id = get_value('CacheClient_Identifier')
    @config_files.each{ |file|
        doc = Nokogiri::XML(File.read(file))

        node = doc.at_css 'dataCacheClients/dataCacheClient/autoDiscover'
        if (!node.nil?)
            node['identifier'] = cacheclient_id
        end

        File.write(file, doc.to_xml)
    }
end

#transform_cscfg ⇒ Object 



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# File 'lib/transform.rb', line 157

def transform_cscfg
    csdef = Dir.glob('**/*.cscfg')
    csdef.each{ |file|
        doc = Nokogiri::XML(File.read(file))

        node = doc.at_css 'ServiceConfiguration'
        node['serviceName'] = @service_name if !node.nil?

        node = doc.at_css 'Role'
        node['name'] = @service_name if !node.nil?

        node = doc.at_css 'Certificates'
        node.replace(get_value('Certificates_cscfg')) if !node.nil?

        node = doc.at_css 'ConfigurationSettings'
        node.replace(get_value('ConfigurationSettings_cscfg')) if !node.nil?
        
        File.write(file, doc.to_xml)
    }
end

#transform_csdef ⇒ Object 



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# File 'lib/transform.rb', line 121

def transform_csdef
    csdef = Dir.glob('**/*.csdef')
    csdef.each{ |file|
        doc = Nokogiri::XML(File.read(file))

        node = doc.at_css 'ServiceDefinition'
        node['name'] = @service_name if !node.nil?

        node = doc.at_css 'WebRole'
        node['name'] = @service_name if !node.nil?

        node = doc.at_css 'WorkerRole'
        node['name'] = @service_name if !node.nil?

        node = doc.at_css 'Certificates'
        node.replace(get_value('Certificates_csdef')) if !node.nil?
        
        node = doc.at_css 'Endpoints'
        node.replace(get_value('Endpoints')) if !node.nil?
        
        node = doc.at_css 'Bindings'
        node.replace(get_value('Bindings')) if !node.nil?
        
        node = doc.at_css 'Sites'
        node.replace(get_value('Sites')) if !node.nil?

        node = doc.at_css 'Imports'
        node.replace(get_value('Imports')) if !node.nil?
        
        node = doc.at_css 'LocalResources'
        node.replace(get_value('LocalResources')) if !node.nil?

        File.write(file, doc.to_xml)
    }
end

#transform_diagnosticscfg ⇒ Object 



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# File 'lib/transform.rb', line 200

def transform_diagnosticscfg
    csdef = Dir.glob('**/*.wadcfgx')
    csdef.each{ |file|
        doc = Nokogiri::XML(File.read(file))

        node = doc.at_css "PrivateConfig/#{STORAGEACCOUNT}"
        node['name'] = get_value(STORAGEACCOUNT)
        node['key'] = get_value(STORAGEACCOUNTKEY)
        node = doc.at_css STORAGEACCOUNT
        node.content = get_value(STORAGEACCOUNT)
        
        File.write(file, doc.to_xml)
    }
end

#transform_servicemodelconfig ⇒ Object 



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# File 'lib/transform.rb', line 90

def transform_servicemodelconfig
    @config_files.each{|file|
        doc = Nokogiri::XML(File.read(file))
        doc.xpath('//system.serviceModel').each do |node|
            #puts node

            if !node.nil?
                if file.end_with?('app.config') || file.end_with?('App.config')
                    node.replace(get_value('system.ServiceModel.Client'))
                elsif file.end_with?('Web.config')
                    node.replace(get_value('system.ServiceModel.Service'))
                end
                File.write(file, doc.to_xml)
            end
        end
    } 
end

#transform_systemwebcompilationattribs ⇒ Object 



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# File 'lib/transform.rb', line 107

def transform_systemwebcompilationattribs
    @config_files.each{|file|
        doc = Nokogiri::XML(File.read(file))
        node = doc.at_css 'compilation'
        if !node.nil?
            #puts node

            node.xpath('//@debug').remove
            node.xpath('//@tempDirectory').remove
            #puts node

            File.write(file, doc.to_xml)
        end
    }
end

#update_appsetting(k, v, doc, file) ⇒ Object 



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# File 'lib/transform.rb', line 78

def update_appsetting(k, v, doc, file)
    if (k != NO_VALUE && v != NO_VALUE)
        node = doc.at_css "appSettings/add[@key='#{k}']"
        if !node.nil?
            #puts "Old value: #{node[VALUE]}"

            node[VALUE] = v
            #puts "New value: #{v}"

            File.write(file, doc.to_xml)
        end
    end
end