Component Types template

Component types are defined using a YAML manifest with the following structure:

# General section
name: function_branin
description: A component type for the branin analytical function

# Parameters section
parameters:
  - name: x1
    domain:
      type: real
      domain: [-5.0, 10.0]
    defaultValue: -5.0
    decimals: 3
    operators:
    FileConfigurator:
      confTemplate: "${value}"

  - name: x2
    domain:
      type: real
      domain: [0.0, 15.0]
    defaultValue: 0.0

  - name: x3
    domain:
      type: categorical
      categories: [cat1,cat2,cat3]
    operators:
    LinuxConfigurator:
      echo:
        file: /sys/class/block/nvme0n1/queue/scheduler

# Metrics section
metrics:
  - name: function_value

and properties for the general section:

Field	Type	Value restrictions	Is required	Default value	Description
name	string	should match the following regexp: ^[a-zA-Z][a-zA-Z0-9_]*$ that is only letters, number and underscores, no initial number of underscore Notice: this should not match the name of another component	TRUE		The name of the component.
description	string		TRUE		A description to characterize the component.
componentType	string	notice: this should match the name of an existing component-type	TRUE		The name of the component-type that defines the type of the component.
properties	object		FALSE		General custom properties of the component. These properties can be defined freely and usually have the purpose to expose information useful for configuring the component.

The parameter section describes the relationship between the component type and already defined parameters with the following properties:

Field	Type	Value restrictions	Is required	Default value	Description
name	string	It should match the name of an existing parameter.	Yes	-	The name of the parameter that should be related to the component-type
domain->type	string	{real, integer, categorical}	Yes	-	The type of domain to be set for the parameter in relationship with the component-type
domain->domain	array of numbers	The numbers should be either all integers or real numbers(do not omit the " . ") depending on domain->type. The size of the array must be 2.	No	-	The bounds to be used to define the domain of the parameter. These bounds are inclusive
domain->categories	array of strings		No	-	The possible categories that the parameter could possess
defaultValue	string, integer, real	The value must be included in the domain, for real and integer types and must be a value included in the categories	Yes	-	The default value of the parameter
decimals	integer	[0-255]	No	5	The number of decimal digits rendered for this parameter
operators	object	The name and the parameters of a supported workflow operators	TRUE	-	Specify what operators can be used to apply the parameter

The metric section describes the relationship between the component type and already defined metrics with the following properties:

Field	Type	Value restrictions	Is required	Default value	Description
name	string	It should match the name of an existing metric	TRUE		The name of the metric that should be related to the component type

Notice that component type definitions are shared across all the workspaces on the same Akamas installation, and require an account with administrative privileges to manage them.

Examples

Example of a component for the Cassandra component type:

name: Cassandra
description: The Cassandra NoSQL database version 3
parameters:
  - name: cassandra_compactionStrategy
    domain:
      type: categorical
      categories: [A, B]
    defaultValue: A

metrics:
  - name: total_rate
  - name: read_rate
  - name: write_rate
  - name: read_response_time_avg
  - name: read_response_time_p90
  - name: read_response_time_p99
  - name: read_response_time_max
  - name: write_response_time_avg
  - name: write_response_time_p90
  - name: write_response_time_p99
  - name: write_response_time_max

Example of a component for the Linux operating component type:

name: Linux OS
description: A component type for the Linux Operating System
parameters:
  #CPU Related
  - name: os_cpuSchedMinGranularity
    domain:
      type: integer
      domain: [300000, 30000000]
    defaultValue: 3000000
  - name: os_cpuSchedWakeupGranularity
    domain:
      type: integer
      domain: [400000, 40000000]
    defaultValue: 4000000
  - name: osCpu.schedMigrationCost
    domain:
      type: integer
      domain: [100000, 5000000]
    defaultValue: 500000
  - name: os_CPUSchedChildRunsFirst
    domain:
      type: integer
      domain: [0, 1]
    defaultValue: 0
  - name: os_CPUSchedLatency
    domain:
      type: integer
      domain: [2400000, 240000000]
    defaultValue: 24000000
  - name: os_CPUSchedAutogroupEnabled
    domain:
      type: integer
      domain: [0, 1]
    defaultValue: 1
  - name: os_CPUSchedNrMigrate
    domain:
      type: integer
      domain: [3, 320]
    defaultValue: 32
  #Memory Related
  - name: os_MemorySwappiness
    domain:
      type: integer
      domain: [0, 100]
    defaultValue: 60
  - name: os_MemoryVmVfsCachePressure
    domain:
      type: integer
      domain: [10, 100]
    defaultValue: 100
  - name: os_MemoryVmMinFree
    domain:
      type: integer
      domain: [10240, 1024000]
    defaultValue: 67584
  - name: os_MemoryVmDirtyRatio
    domain:
      type: integer
      domain: [1, 99]
    defaultValue: 10
  - name: os_MemoryTransparentHugepageEnabled
    domain:
      type: categorical
      categories: ['True', 'False']
    defaultValue: 'True'
  - name: os_MemoryTransparentHugepageDefrag
    domain:
      type: categorical
      categories: ['True', 'False']
    defaultValue: 'True'
  - name: os_MemorySwap
    domain:
      type: categorical
      categories: ['True', 'False']
    defaultValue: 'True'
  - name: os_MemoryVmDirtyExpire
    domain:
      type: integer
      domain: [300, 30000]
    defaultValue: 3000
  - name: os_MemoryVmDirtyWriteback
    domain:
      type: integer
      domain: [50, 5000]
    defaultValue: 500

metrics:
  - name: cpu_num
  - name: cpu_util
  - name: mem_util
  - name: load_avg
  - name: swapins
  - name: swapouts
  - name: disk_iops_writes
  - name: disk_iops_reads
  - name: disk_iops_total
  - name: disk_await_worst
  - name: proc_blocked
  - name: context_switch
  - name: tcp_retrans
  - name: tcp_tozerowin
  - name: net_band_rx_bits
  - name: net_band_tx_bits
  - name: network_in_byte_rate
  - name: network_out_byte_rate
  - name: mem_fault_minor
  - name: mem_fault_major
  - name: mem_active_file
  - name: mem_active_anon
  - name: mem_inactive_file
  - name: mem_inactive_anon