pub struct TemplateParameter {
    pub name: String,
    pub fields: Vec<String>,
    pub description: String,
    pub validation: Option<ParameterValidation>,
}
Expand description

A configurable parameter that replaces one or more fields in the template. Parameterizable fields:

  • Labels
  • File uris
  • Job properties
  • Job arguments
  • Script variables
  • Main class (in HadoopJob and SparkJob)
  • Zone (in ClusterSelector)

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§name: String

Required. Parameter name. The parameter name is used as the key, and paired with the parameter value, which are passed to the template when the template is instantiated. The name must contain only capital letters (A-Z), numbers (0-9), and underscores (_), and must not start with a number. The maximum length is 40 characters.

§fields: Vec<String>

Required. Paths to all fields that the parameter replaces. A field is allowed to appear in at most one parameter’s list of field paths.

A field path is similar in syntax to a [google.protobuf.FieldMask][google.protobuf.FieldMask]. For example, a field path that references the zone field of a workflow template’s cluster selector would be specified as placement.clusterSelector.zone.

Also, field paths can reference fields using the following syntax:

  • Values in maps can be referenced by key:

    • labels[‘key’]
    • placement.clusterSelector.clusterLabels[‘key’]
    • placement.managedCluster.labels[‘key’]
    • placement.clusterSelector.clusterLabels[‘key’]
    • jobs[‘step-id’].labels[‘key’]
  • Jobs in the jobs list can be referenced by step-id:

    • jobs[‘step-id’].hadoopJob.mainJarFileUri
    • jobs[‘step-id’].hiveJob.queryFileUri
    • jobs[‘step-id’].pySparkJob.mainPythonFileUri
    • jobs[‘step-id’].hadoopJob.jarFileUris[0]
    • jobs[‘step-id’].hadoopJob.archiveUris[0]
    • jobs[‘step-id’].hadoopJob.fileUris[0]
    • jobs[‘step-id’].pySparkJob.pythonFileUris[0]
  • Items in repeated fields can be referenced by a zero-based index:

    • jobs[‘step-id’].sparkJob.args[0]
  • Other examples:

    • jobs[‘step-id’].hadoopJob.properties[‘key’]
    • jobs[‘step-id’].hadoopJob.args[0]
    • jobs[‘step-id’].hiveJob.scriptVariables[‘key’]
    • jobs[‘step-id’].hadoopJob.mainJarFileUri
    • placement.clusterSelector.zone

It may not be possible to parameterize maps and repeated fields in their entirety since only individual map values and individual items in repeated fields can be referenced. For example, the following field paths are invalid:

  • placement.clusterSelector.clusterLabels
  • jobs[‘step-id’].sparkJob.args
§description: String

Optional. Brief description of the parameter. Must not exceed 1024 characters.

§validation: Option<ParameterValidation>

Optional. Validation rules to be applied to this parameter’s value.

Trait Implementations§

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impl Clone for TemplateParameter

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fn clone(&self) -> TemplateParameter

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TemplateParameter

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for TemplateParameter

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Message for TemplateParameter

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fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.
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fn clear(&mut self)

Clears the message, resetting all fields to their default.
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fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError>
where B: BufMut, Self: Sized,

Encodes the message to a buffer. Read more
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fn encode_to_vec(&self) -> Vec<u8>
where Self: Sized,

Encodes the message to a newly allocated buffer.
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fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError>
where B: BufMut, Self: Sized,

Encodes the message with a length-delimiter to a buffer. Read more
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fn encode_length_delimited_to_vec(&self) -> Vec<u8>
where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.
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fn decode<B>(buf: B) -> Result<Self, DecodeError>
where B: Buf, Self: Default,

Decodes an instance of the message from a buffer. Read more
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fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError>
where B: Buf, Self: Default,

Decodes a length-delimited instance of the message from the buffer.
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fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError>
where B: Buf, Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self. Read more
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fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError>
where B: Buf, Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.
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impl PartialEq for TemplateParameter

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fn eq(&self, other: &TemplateParameter) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for TemplateParameter

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Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoRequest<T> for T

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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more