Class: CloudFormation

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

Instance Method Summary collapse

Instance Method Details

#clean(hive_location, task_name, task_hash, debug) ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 168

def clean hive_location, task_name, task_hash, debug
    
    aws_key_id = task_hash["vm"]["driver"]["driveroptions"][0]["access_key_id"] 
    aws_secret = task_hash["vm"]["driver"]["driveroptions"][0]["secret_access_key"]

    # eval possible environment variables
    if aws_key_id =~ /^ENV\['.+'\]$/
        aws_key_id = eval(aws_key_id)
    end

    if aws_secret =~ /^ENV\['.+'\]$/
        aws_secret = eval(aws_secret)
    end 

    abort("AWS key id is not specified in task") unless aws_key_id != nil
    abort("AWS secret is not specified in task") unless aws_secret != nil

    rabbit_objects = initRabbitConnection(task_hash["vm"]["driver"]["driveroptions"][0]["rabbit"])

    puts("Cleaning task #{task_name} ...")

    # run fog cleanup on the stack.
    stack_name = "#{task_name}"

    Excon.defaults[:connect_timeout] = 600
    Excon.defaults[:read_timeout] = 600
    Excon.defaults[:write_timeout] = 600
    
    cf = Fog::AWS::CloudFormation.new(
        :aws_access_key_id => aws_key_id,
        :aws_secret_access_key => aws_secret,
        :connection_options => {
            :connect_timeout => 700,
            :read_timeout => 700
        }
    )

    stack_info = cf.delete_stack(stack_name)
    puts("Deleting stack #{stack_name}")

     # get the event collection and initial info
    outputs_info = nil
    while outputs_info == nil do
        sleep 3
        with_retries(:max_tries => 10, :base_sleep_seconds => 3, :max_sleep_seconds => 20) {
            outputs_info = cf.describe_stacks({ 'StackName' => stack_name }) 
            begin
                outputs_info = cf.describe_stacks({ 'StackName' => stack_name })
            rescue Fog::AWS::CloudFormation::NotFound
                rabbit_objects[:connection].close unless rabbit_objects == nil
                return 0
            end
        }
    end

    events = nil
    with_retries(:max_tries => 10, :base_sleep_seconds => 3, :max_sleep_seconds => 20) {
        events = cf.describe_stack_events(stack_name).body['StackEvents']
    }
    while events == nil do
        sleep 3
        with_retries(:max_tries => 10, :base_sleep_seconds => 3, :max_sleep_seconds => 20) {
            begin
                events = cf.describe_stack_events(stack_name).body['StackEvents']
            rescue Fog::AWS::CloudFormation::NotFound
                rabbit_objects[:connection].close unless rabbit_objects == nil
                return 0
            end
        }
    end

    event_counter = 0
    while outputs_info.body["Stacks"][0]["StackStatus"] == "DELETE_IN_PROGRESS" do
        logEvents(events.first(events.length - event_counter))
        logRabbitEvents(events.first(events.length - event_counter), rabbit_objects, eval_params(task_hash["vm"]["driver"]["driveroptions"][0]["rabbit"])) 

        event_counter = events.length
        with_retries(:max_tries => 10, :base_sleep_seconds => 3, :max_sleep_seconds => 20) {
            begin
                events = cf.describe_stack_events(stack_name).body['StackEvents']
                outputs_info = cf.describe_stacks({ 'StackName' => stack_name })
            rescue Fog::AWS::CloudFormation::NotFound
                logEvents(events.first(events.length - event_counter))
                logRabbitEvents(events.first(events.length - event_counter), rabbit_objects, eval_params(task_hash["vm"]["driver"]["driveroptions"][0]["rabbit"])) 
                rabbit_objects[:connection].close unless rabbit_objects == nil
                return 0
            end
        }
    end

    # log remaining events for error case
    logEvents(events.first(events.length - event_counter))
    logRabbitEvents(events.first(events.length - event_counter), rabbit_objects, eval_params(task_hash["vm"]["driver"]["driveroptions"][0]["rabbit"])) 

    rabbit_objects[:connection].close unless rabbit_objects == nil
    abort("ERROR: Failed with stack status: #{outputs_info.body["Stacks"][0]["StackStatus"]}")

    rescue Fog::Errors::Error => fog_cf_error
        rabbit_objects[:connection].close unless rabbit_objects == nil
        abort ("ERROR: AWS error: #{fog_cf_error.ai}")
end

#eval_params(params) ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 340

def eval_params(params)
    params.each do |k, v|
        # If v is nil, an array is being iterated and the value is k. 
        # If v is not nil, a hash is being iterated and the value is v.
        # 
        value = v || k

        if value.is_a?(Hash) || value.is_a?(Array)
            eval_params(value)
        else
            if value.is_a?(String)
                if value =~ /(^ENV\['.+'\]$)/
                    if v.nil?
                        k.replace eval(value)
                    else
                        params[k] = eval(value)
                    end
                end
            end
        end
    end

    return params
end

#folder_schema ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 328

def folder_schema
    return nil
end

#halt(hive_location, task_name, task_hash, debug) ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 315

def halt hive_location, task_name, task_hash, debug
    puts("Halt is not implemented for CloudFormation.")
    return
end

#initRabbitConnection(rabbitInfo) ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 281

def initRabbitConnection rabbitInfo
    return nil unless rabbitInfo != nil
    params = eval_params(rabbitInfo)
    conn = Bunny.new(Hash[params["bunny_params"].map{ |k, v| [k.to_sym, v] }])
    conn.start

    channel = conn.create_channel
    exch = (params["exchange"] == nil) ? channel.default_exchange : channel.direct(params["exchange"]["name"], Hash[params["exchange"]["params"].map{ |k, v| [k.to_sym, v] }])
    channel.queue(params["queue"]["name"], Hash[params["queue"]["params"].map{ |k, v| [k.to_sym, v] }]).bind(exch)

    return  { :connection => conn, :channel => channel, :exchange => exch }
end

#logEvents(events) ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 270

def logEvents events
    events.each do |event|
        puts "Timestamp: #{Time.parse(event['Timestamp'].to_s).iso8601}"
        puts "LogicalResourceId: #{event['LogicalResourceId']}"
        puts "ResourceType: #{event['ResourceType']}"
        puts "ResourceStatus: #{event['ResourceStatus']}"
        puts "ResourceStatusReason: #{event['ResourceStatusReason']}" if event['ResourceStatusReason']
        puts "--"
    end
end

#logRabbitEvents(events, rabbit_objects, rabbit_properties) ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 294

def logRabbitEvents events, rabbit_objects, rabbit_properties
    timestamp = (rabbit_properties["event_timestamp_name"] == nil) ? "timestamp" : rabbit_properties["event_timestamp_name"]
    res_id_name = (rabbit_properties["event_resource_id_name"] == nil) ? "resource_id" : rabbit_properties["event_resource_id_name"]
    res_type_name = (rabbit_properties["event_resource_type_name"] == nil) ? "resource_type" : rabbit_properties["event_resource_type_name"]
    res_status = (rabbit_properties["event_resource_status_name"] == nil) ? "resource_status" : rabbit_properties["event_resource_status_name"]
    reason = (rabbit_properties["event_resource_reason_name"] == nil) ? "reason" : rabbit_properties["event_resource_reason_name"]


    events.each do |event|
        event_info = {
            timestamp.to_sym => "#{Time.parse(event['Timestamp'].to_s).iso8601}",
            res_id_name.to_sym => "#{event['LogicalResourceId']}",
            res_type_name.to_sym => "#{event['ResourceType']}",
            res_status.to_sym => "#{event['ResourceStatus']}",
            reason.to_sym => "#{event['ResourceStatusReason']}"
        }
        
        rabbit_objects[:exchange].publish(event_info.to_json, :routing_key => rabbit_properties["queue"]["name"])
    end
end

#option_schema ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 324

def option_schema
    return File.open(File.join("#{File.dirname(__FILE__)}", "..", "..", "resources", "option_schema.template"), 'r').read
end

#port_schema ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 332

def port_schema
    return nil
end

#rush(hive_location, task_name, task_hash, debug) ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 36

def rush hive_location, task_name, task_hash, debug
    aws_key_id = task_hash["vm"]["driver"]["driveroptions"][0]["access_key_id"] 
    aws_secret = task_hash["vm"]["driver"]["driveroptions"][0]["secret_access_key"] 

    # eval possible environment variables
    if aws_key_id =~ /^ENV\['.+'\]$/
        aws_key_id = eval(aws_key_id)
    end

    if aws_secret =~ /^ENV\['.+'\]$/
        aws_secret = eval(aws_secret)
    end

    abort("AWS key id is not specified in task") unless aws_key_id != nil
    abort("AWS secret is not specified in task") unless aws_secret != nil

    rabbit_objects = initRabbitConnection(task_hash["vm"]["driver"]["driveroptions"][0]["rabbit"])

    renderer = ZergrushCF::Renderer.new(
        hive_location, 
        task_name, 
        task_hash)        
    template_body = renderer.render

    # see if we need to upload anything to s3?
    if task_hash["vm"]["driver"]["driveroptions"][0]["storage"] != nil
        if task_hash["vm"]["driver"]["driveroptions"][0]["storage"]["s3_bucket"] != nil 
            bucket_name = task_hash["vm"]["driver"]["driveroptions"][0]["storage"]["s3_bucket"]["name"]
            is_public = task_hash["vm"]["driver"]["driveroptions"][0]["storage"]["s3_bucket"]["public"]
            files = task_hash["vm"]["driver"]["driveroptions"][0]["storage"]["s3_bucket"]["files"]

            # create a connection
            connection = Fog::Storage.new({
                :provider => 'AWS',
                :aws_access_key_id => aws_key_id,
                :aws_secret_access_key => aws_secret
            })

            directory = connection.directories.create(
                :key => bucket_name,
                :public => is_public
            )

            files.each { |file|
                directory.files.create(
                    :key    => file,
                    :body   => File.open(File.join(hive_location, task_name, file)),
                    :public => is_public
                )
            }
        end
    end

    Excon.defaults[:connect_timeout] = 600
    Excon.defaults[:read_timeout] = 600
    Excon.defaults[:write_timeout] = 600

    cf = Fog::AWS::CloudFormation.new(
        :aws_access_key_id => aws_key_id,
        :aws_secret_access_key => aws_secret,
        :connection_options => {
            :connect_timeout => 700,
            :read_timeout => 700
        }
    )

    # create the cloudformation stack
    stack_name = "#{task_name}"

    params = eval_params(task_hash["vm"]["driver"]["driveroptions"][0]["template_parameters"])       
    stack_info = cf.create_stack(stack_name, { 'DisableRollback' => true, 'TemplateBody' => template_body.to_json, 'Parameters' => params, 'Capabilities' => [ "CAPABILITY_IAM" ] })

    # grab the id of the stack
    stack_id = stack_info.body["StackId"]
    puts("Creating stack #{stack_name} with id #{stack_id}")


    # get the event collection and initial info
    outputs_info = nil
    with_retries(:max_tries => 10, :base_sleep_seconds => 3, :max_sleep_seconds => 20) {
        outputs_info = cf.describe_stacks({ 'StackName' => stack_name })
    }
    while outputs_info == nil do
        sleep 3
        with_retries(:max_tries => 10, :base_sleep_seconds => 3, :max_sleep_seconds => 20) { 
            outputs_info = cf.describe_stacks({ 'StackName' => stack_name })
        }
    end

    events = nil
    with_retries(:max_tries => 10, :base_sleep_seconds => 3, :max_sleep_seconds => 20) {
        events = cf.describe_stack_events(stack_name).body['StackEvents']
    }
    while events == nil do
        sleep 3
        with_retries(:max_tries => 10, :base_sleep_seconds => 3, :max_sleep_seconds => 20) {
            events = cf.describe_stack_events(stack_name).body['StackEvents']
        }
    end

    event_counter = 0
    while outputs_info.body["Stacks"][0]["StackStatus"] == "CREATE_IN_PROGRESS" do
        logEvents(events.first(events.length - event_counter))
        logRabbitEvents(events.first(events.length - event_counter), rabbit_objects, eval_params(task_hash["vm"]["driver"]["driveroptions"][0]["rabbit"])) 
        event_counter = events.length

        with_retries(:max_tries => 10, :base_sleep_seconds => 3, :max_sleep_seconds => 20) {
            events = cf.describe_stack_events(stack_name).body['StackEvents']
            outputs_info = cf.describe_stacks({ 'StackName' => stack_name })
        }
        if outputs_info.body["Stacks"][0]["StackStatus"] == "CREATE_COMPLETE"
            logEvents(events.first(events.length - event_counter))
            logRabbitEvents(events.first(events.length - event_counter), rabbit_objects, eval_params(task_hash["vm"]["driver"]["driveroptions"][0]["rabbit"])) 
            puts("Stack outputs:")
            ap outputs_info.body["Stacks"][0]["Outputs"]
            rabbit_objects[:connection].close unless rabbit_objects == nil
            return 0
        end
    end

    # log the remaining events for failure case
    logEvents(events.first(events.length - event_counter))
    logRabbitEvents(events.first(events.length - event_counter), rabbit_objects, eval_params(task_hash["vm"]["driver"]["driveroptions"][0]["rabbit"]))

    rabbit_objects[:connection].close unless rabbit_objects == nil
    abort("ERROR: Failed with stack status: #{outputs_info.body["Stacks"][0]["StackStatus"]}")
    
    rescue Fog::Errors::Error => fog_cf_error
        rabbit_objects[:connection].close unless rabbit_objects == nil
        abort ("ERROR: AWS error: #{fog_cf_error.message}")
end

#ssh_schema ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 336

def ssh_schema
    return nil
end

#task_schema ⇒ Object 



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# File 'lib/zergrush_cf/init.rb', line 320

def task_schema
    return nil
end