Packages

class MDataClient extends AnyRef

MDataClient class provides methods to interact with instance metadata deployed on Joyent Triton cloud.

See also

mdata-client for information on Joyent Triton mdata-client

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Instance Constructors

  1. new MDataClient(processLogger: ProcessLogger, binPath: String)

    creates a new MDataClient connector instance

    creates a new MDataClient connector instance

    processLogger

    A log handler to log stdout and stderr events of the processes

    binPath

    A prefix path for the mdata executable binaries, if they are not present in current PATH scope

Value Members

  1. final def !=(arg0: Any): Boolean
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  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
    Definition Classes
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  5. def asProperties(): Properties

    asProperties method returns the instance metadata in the form of java Properties instance

    asProperties method returns the instance metadata in the form of java Properties instance

    scala> mdataClient.asProperties()

res14: java.util.Properties = {lifecycle=devl, component=abc}
    returns

    a java.util.Properties instance

  6. def clone(): AnyRef
    Attributes
    protected[java.lang]
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    @native() @throws( ... )
  7. def delete(key: String): Boolean

    delete method calls mdata-delete binary as child process and returns the output as a boolean

    delete method calls mdata-delete binary as child process and returns the output as a boolean

    scala> mdataClient.delete("version")

res2: Boolean = true

scala> mdataClient.delete("version")
res3: Boolean = false
    key

    input metadata key

    returns

    a boolean, true for success and false for failure

    See also

    mdata-delete for more information on mdata-delete command

  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
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  9. def equals(arg0: Any): Boolean
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  10. def finalize(): Unit
    Attributes
    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )
  11. def get(key: String): Option[String]

    get method calls mdata-get binary as child process and returns the output as an optional string

    get method calls mdata-get binary as child process and returns the output as an optional string

    scala> mdataClient.get("lifecycle")

res1: Option[String] = Some(devl)

scala> mdataClient.get("dummy")

res1: Option[String] = None
    key

    input metadata key

    returns

    an optional string value for the input metadata key

    See also

    mdata-get for more information on mdata-get command

  12. final def getClass(): Class[_]
    Definition Classes
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    Annotations
    @native()
  13. def hashCode(): Int
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    @native()
  14. final def isInstanceOf[T0]: Boolean
    Definition Classes
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  15. def listKeys(): List[String]

    listKeys method calls mdata-list binary as child process and returns the output as list of string

    listKeys method calls mdata-list binary as child process and returns the output as list of string

    scala> mdataClient.listKeys()

res0: List[String] = List(root_authorized_keys, lifecycle, component)
    returns

    a list of instance metadata keys

    See also

    mdata-list for more information on mdata-list command

  16. def loadToSystemProperties(): Unit

    loadToSystemProperties method loads the instance metadata as JVM System Properties

    loadToSystemProperties method loads the instance metadata as JVM System Properties

    scala> mdataClient.loadToSystemProperties()
scala> System.getProperty("lifecycle")

res16: String = devl
    returns

    an Unit

  17. final def ne(arg0: AnyRef): Boolean
    Definition Classes
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  18. final def notify(): Unit
    Definition Classes
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    @native()
  19. final def notifyAll(): Unit
    Definition Classes
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    @native()
  20. def put(key: String, value: String): Boolean

    put method calls mdata-put binary as child process and returns the output as a boolean

    put method calls mdata-put binary as child process and returns the output as a boolean

    scala> mdataClient.put("version", "1.0")

res1: Boolean = true

scala> mdataClient.put("version", "")
java.lang.IllegalArgumentException: requirement failed: value argument can't be empty!!
  at scala.Predef$.require(Predef.scala:224)
  at com.github.arcizon.triton.MDataClient.put(MDataClient.scala:46)
  ... 32 elided
    key

    input metadata key

    value

    input metadata value for the key

    returns

    a boolean, true for success and false for failure

    See also

    mdata-put for more information on mdata-put command

  21. final def synchronized[T0](arg0: ⇒ T0): T0
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  22. def toString(): String
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  23. final def wait(): Unit
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    @throws( ... )
  24. final def wait(arg0: Long, arg1: Int): Unit
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    @throws( ... )
  25. final def wait(arg0: Long): Unit
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    @native() @throws( ... )

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