Module: Enscalator::Plugins::Couchbase

Defined in:
lib/enscalator/plugins/couchbase.rb

Overview

Plugin for Couchbase

Instance Method Summary collapse

Instance Method Details

#couchbase_ami_mapping ⇒ Hash

Couchbase ami mapping for x64 images

Returns:

  • (Hash) —

    aws mapping



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# File 'lib/enscalator/plugins/couchbase.rb', line 45

def couchbase_ami_mapping
  {
    'us-west-2': { paravirtual: 'ami-c398c6f3' },
    'us-west-1': { paravirtual: 'ami-1a554c5f' },
    'us-east-1': { paravirtual: 'ami-403b4328' },
    'sa-east-1': { paravirtual: 'ami-59229f44' },
    'eu-west-1': { paravirtual: 'ami-8129aaf6' },
    'ap-southeast-1': { paravirtual: 'ami-88745fda' },
    'ap-northeast-1': { paravirtual: 'ami-6a7b676b' }
  }.with_indifferent_access
end

#couchbase_init(db_name, bucket: nil, allocated_storage: 5, instance_type: 't2.medium') ⇒ Object

Couchbase instance

Parameters:

  • db_name (String) —

    database name

  • bucket (String) (defaults to: nil) —

    bucket

  • allocated_storage (Integer) (defaults to: 5) —

    size of instance primary storage

  • instance_type (String) (defaults to: 't2.medium') —

    instance type



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# File 'lib/enscalator/plugins/couchbase.rb', line 11

def couchbase_init(db_name,
                   bucket: nil,
                   allocated_storage: 5,
                   instance_type: 't2.medium')
  @couchbase_mapping ||=
    mapping 'AWSCouchbaseAMI', couchbase_ami_mapping

  fail 'You need to provide a bucket for couchbase' if bucket.nil?

  parameter_key_name "Couchbase#{db_name}"

  parameter_allocated_storage "Couchbase#{db_name}",
                              default: allocated_storage,
                              min: 5,
                              max: 1024

  parameter_ec2_instance_type "Couchbase#{db_name}", type: instance_type

  instance_vpc("Couchbase#{db_name}",
               find_in_map('AWSCouchbaseAMI', ref('AWS::Region'), 'amd64'),
               ref_resource_subnets.first,
               [ref_private_security_group, ref_resource_security_group],
               depends_on: [],
               properties: {
                 KeyName: ref("Couchbase#{db_name}KeyName"),
                 InstanceType: ref("Couchbase#{db_name}InstanceType"),
                 UserData: Base64.encode64(
                   couchbase_user_data(bucket, 'Administrator', '3fA76JWtzYbm')
                 )
               })
end

#couchbase_user_data(bucket, user, password) ⇒ String

Couchbase user data

Parameters:

  • bucket (String) —

    couchbase bucket

Returns:

  • (String) —

    user data script



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# File 'lib/enscalator/plugins/couchbase.rb', line 61

def couchbase_user_data(bucket, user, password)
  data = <<-EOG
    #!/usr/bin/env bash
    while [[ ! -e /opt/couchbase/var/lib/couchbase/couchbase-server.pid ]]; do
      sleep 20
      echo "wait for couchbase" >> /tmp/userdatalog
      service couchbase-server status >> /tmp/userdatalog
    done

    # Wait for everything to be initialized
    sleep 1m
    RAMSIZE=`cat /proc/meminfo | grep MemTotal | awk {'print $2'}`
    RAMSIZE=`echo "($RAMSIZE/1000*(75/100.0))" | bc -l | xargs printf %0.f`
    INSTANCE=`curl http://169.254.169.254/latest/meta-data/instance-id`
    /opt/couchbase/bin/couchbase-cli cluster-init -c 127.0.0.1:8091 \
      -u #{user} \
      -p $INSTANCE \
      --cluster-init-password=#{password} \
      --cluster-init-ramsize=$RAMSIZE 2>&1 >> /tmp/userdatalog
    /opt/couchbase/bin/couchbase-cli node-init -c 127.0.0.1:8091 \
      -u #{user} \
      -p #{password} 2>&1 >> /tmp/userdatalog
    /opt/couchbase/bin/couchbase-cli bucket-create -c 127.0.0.1:8091 \
       --bucket=#{bucket} \
       --bucket-type=couchbase \
       --bucket-password=#{password} \
       --bucket-port=11211 \
       --bucket-ramsize=$RAMSIZE \
       --bucket-replica=1 \
       --bucket-priority=low \
       --wait \
       -u #{user} -p #{password} 2>&1 >> /tmp/userdatalog
  EOG
  data
end