// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package google.cloud.aiplatform.v1;

import "google/api/field_behavior.proto";
import "google/api/resource.proto";
import "google/cloud/aiplatform/v1/encryption_spec.proto";
import "google/cloud/aiplatform/v1/io.proto";
import "google/cloud/aiplatform/v1/model.proto";
import "google/cloud/aiplatform/v1/pipeline_state.proto";
import "google/protobuf/struct.proto";
import "google/protobuf/timestamp.proto";
import "google/rpc/status.proto";

option csharp_namespace = "Google.Cloud.AIPlatform.V1";
option go_package = "cloud.google.com/go/aiplatform/apiv1/aiplatformpb;aiplatformpb";
option java_multiple_files = true;
option java_outer_classname = "TrainingPipelineProto";
option java_package = "com.google.cloud.aiplatform.v1";
option php_namespace = "Google\\Cloud\\AIPlatform\\V1";
option ruby_package = "Google::Cloud::AIPlatform::V1";

// The TrainingPipeline orchestrates tasks associated with training a Model. It
// always executes the training task, and optionally may also
// export data from Vertex AI's Dataset which becomes the training input,
// [upload][google.cloud.aiplatform.v1.ModelService.UploadModel] the Model to
// Vertex AI, and evaluate the Model.
message TrainingPipeline {
  option (google.api.resource) = {
    type: "aiplatform.googleapis.com/TrainingPipeline"
    pattern: "projects/{project}/locations/{location}/trainingPipelines/{training_pipeline}"
  };

  // Output only. Resource name of the TrainingPipeline.
  string name = 1 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Required. The user-defined name of this TrainingPipeline.
  string display_name = 2 [(google.api.field_behavior) = REQUIRED];

  // Specifies Vertex AI owned input data that may be used for training the
  // Model. The TrainingPipeline's
  // [training_task_definition][google.cloud.aiplatform.v1.TrainingPipeline.training_task_definition]
  // should make clear whether this config is used and if there are any special
  // requirements on how it should be filled. If nothing about this config is
  // mentioned in the
  // [training_task_definition][google.cloud.aiplatform.v1.TrainingPipeline.training_task_definition],
  // then it should be assumed that the TrainingPipeline does not depend on this
  // configuration.
  InputDataConfig input_data_config = 3;

  // Required. A Google Cloud Storage path to the YAML file that defines the
  // training task which is responsible for producing the model artifact, and
  // may also include additional auxiliary work. The definition files that can
  // be used here are found in
  // gs://google-cloud-aiplatform/schema/trainingjob/definition/.
  // Note: The URI given on output will be immutable and probably different,
  // including the URI scheme, than the one given on input. The output URI will
  // point to a location where the user only has a read access.
  string training_task_definition = 4 [(google.api.field_behavior) = REQUIRED];

  // Required. The training task's parameter(s), as specified in the
  // [training_task_definition][google.cloud.aiplatform.v1.TrainingPipeline.training_task_definition]'s
  // `inputs`.
  google.protobuf.Value training_task_inputs = 5
      [(google.api.field_behavior) = REQUIRED];

  // Output only. The metadata information as specified in the
  // [training_task_definition][google.cloud.aiplatform.v1.TrainingPipeline.training_task_definition]'s
  // `metadata`. This metadata is an auxiliary runtime and final information
  // about the training task. While the pipeline is running this information is
  // populated only at a best effort basis. Only present if the
  // pipeline's
  // [training_task_definition][google.cloud.aiplatform.v1.TrainingPipeline.training_task_definition]
  // contains `metadata` object.
  google.protobuf.Value training_task_metadata = 6
      [(google.api.field_behavior) = OUTPUT_ONLY];

  // Describes the Model that may be uploaded (via
  // [ModelService.UploadModel][google.cloud.aiplatform.v1.ModelService.UploadModel])
  // by this TrainingPipeline. The TrainingPipeline's
  // [training_task_definition][google.cloud.aiplatform.v1.TrainingPipeline.training_task_definition]
  // should make clear whether this Model description should be populated, and
  // if there are any special requirements regarding how it should be filled. If
  // nothing is mentioned in the
  // [training_task_definition][google.cloud.aiplatform.v1.TrainingPipeline.training_task_definition],
  // then it should be assumed that this field should not be filled and the
  // training task either uploads the Model without a need of this information,
  // or that training task does not support uploading a Model as part of the
  // pipeline. When the Pipeline's state becomes `PIPELINE_STATE_SUCCEEDED` and
  // the trained Model had been uploaded into Vertex AI, then the
  // model_to_upload's resource [name][google.cloud.aiplatform.v1.Model.name] is
  // populated. The Model is always uploaded into the Project and Location in
  // which this pipeline is.
  Model model_to_upload = 7;

  // Optional. The ID to use for the uploaded Model, which will become the final
  // component of the model resource name.
  //
  // This value may be up to 63 characters, and valid characters are
  // `[a-z0-9_-]`. The first character cannot be a number or hyphen.
  string model_id = 22 [(google.api.field_behavior) = OPTIONAL];

  // Optional. When specify this field, the `model_to_upload` will not be
  // uploaded as a new model, instead, it will become a new version of this
  // `parent_model`.
  string parent_model = 21 [(google.api.field_behavior) = OPTIONAL];

  // Output only. The detailed state of the pipeline.
  PipelineState state = 9 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Only populated when the pipeline's state is
  // `PIPELINE_STATE_FAILED` or `PIPELINE_STATE_CANCELLED`.
  google.rpc.Status error = 10 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Time when the TrainingPipeline was created.
  google.protobuf.Timestamp create_time = 11
      [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Time when the TrainingPipeline for the first time entered the
  // `PIPELINE_STATE_RUNNING` state.
  google.protobuf.Timestamp start_time = 12
      [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Time when the TrainingPipeline entered any of the following
  // states: `PIPELINE_STATE_SUCCEEDED`, `PIPELINE_STATE_FAILED`,
  // `PIPELINE_STATE_CANCELLED`.
  google.protobuf.Timestamp end_time = 13
      [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Time when the TrainingPipeline was most recently updated.
  google.protobuf.Timestamp update_time = 14
      [(google.api.field_behavior) = OUTPUT_ONLY];

  // The labels with user-defined metadata to organize TrainingPipelines.
  //
  // Label keys and values can be no longer than 64 characters
  // (Unicode codepoints), can only contain lowercase letters, numeric
  // characters, underscores and dashes. International characters are allowed.
  //
  // See https://goo.gl/xmQnxf for more information and examples of labels.
  map<string, string> labels = 15;

  // Customer-managed encryption key spec for a TrainingPipeline. If set, this
  // TrainingPipeline will be secured by this key.
  //
  // Note: Model trained by this TrainingPipeline is also secured by this key if
  // [model_to_upload][google.cloud.aiplatform.v1.TrainingPipeline.encryption_spec]
  // is not set separately.
  EncryptionSpec encryption_spec = 18;
}

// Specifies Vertex AI owned input data to be used for training, and
// possibly evaluating, the Model.
message InputDataConfig {
  // The instructions how the input data should be split between the
  // training, validation and test sets.
  // If no split type is provided, the
  // [fraction_split][google.cloud.aiplatform.v1.InputDataConfig.fraction_split]
  // is used by default.
  oneof split {
    // Split based on fractions defining the size of each set.
    FractionSplit fraction_split = 2;

    // Split based on the provided filters for each set.
    FilterSplit filter_split = 3;

    // Supported only for tabular Datasets.
    //
    // Split based on a predefined key.
    PredefinedSplit predefined_split = 4;

    // Supported only for tabular Datasets.
    //
    // Split based on the timestamp of the input data pieces.
    TimestampSplit timestamp_split = 5;

    // Supported only for tabular Datasets.
    //
    // Split based on the distribution of the specified column.
    StratifiedSplit stratified_split = 12;
  }

  // Only applicable to Custom and Hyperparameter Tuning TrainingPipelines.
  //
  // The destination of the training data to be written to.
  //
  // Supported destination file formats:
  //   * For non-tabular data: "jsonl".
  //   * For tabular data: "csv" and "bigquery".
  //
  // The following Vertex AI environment variables are passed to containers
  // or python modules of the training task when this field is set:
  //
  // * AIP_DATA_FORMAT : Exported data format.
  // * AIP_TRAINING_DATA_URI : Sharded exported training data uris.
  // * AIP_VALIDATION_DATA_URI : Sharded exported validation data uris.
  // * AIP_TEST_DATA_URI : Sharded exported test data uris.
  oneof destination {
    // The Cloud Storage location where the training data is to be
    // written to. In the given directory a new directory is created with
    // name:
    // `dataset-<dataset-id>-<annotation-type>-<timestamp-of-training-call>`
    // where timestamp is in YYYY-MM-DDThh:mm:ss.sssZ ISO-8601 format.
    // All training input data is written into that directory.
    //
    // The Vertex AI environment variables representing Cloud Storage
    // data URIs are represented in the Cloud Storage wildcard
    // format to support sharded data. e.g.: "gs://.../training-*.jsonl"
    //
    // * AIP_DATA_FORMAT = "jsonl" for non-tabular data, "csv" for tabular data
    // * AIP_TRAINING_DATA_URI =
    // "gcs_destination/dataset-<dataset-id>-<annotation-type>-<time>/training-*.${AIP_DATA_FORMAT}"
    //
    // * AIP_VALIDATION_DATA_URI =
    // "gcs_destination/dataset-<dataset-id>-<annotation-type>-<time>/validation-*.${AIP_DATA_FORMAT}"
    //
    // * AIP_TEST_DATA_URI =
    // "gcs_destination/dataset-<dataset-id>-<annotation-type>-<time>/test-*.${AIP_DATA_FORMAT}"
    GcsDestination gcs_destination = 8;

    // Only applicable to custom training with tabular Dataset with BigQuery
    // source.
    //
    // The BigQuery project location where the training data is to be written
    // to. In the given project a new dataset is created with name
    // `dataset_<dataset-id>_<annotation-type>_<timestamp-of-training-call>`
    // where timestamp is in YYYY_MM_DDThh_mm_ss_sssZ format. All training
    // input data is written into that dataset. In the dataset three
    // tables are created, `training`, `validation` and `test`.
    //
    // * AIP_DATA_FORMAT = "bigquery".
    // * AIP_TRAINING_DATA_URI  =
    // "bigquery_destination.dataset_<dataset-id>_<annotation-type>_<time>.training"
    //
    // * AIP_VALIDATION_DATA_URI =
    // "bigquery_destination.dataset_<dataset-id>_<annotation-type>_<time>.validation"
    //
    // * AIP_TEST_DATA_URI =
    // "bigquery_destination.dataset_<dataset-id>_<annotation-type>_<time>.test"
    BigQueryDestination bigquery_destination = 10;
  }

  // Required. The ID of the Dataset in the same Project and Location which data
  // will be used to train the Model. The Dataset must use schema compatible
  // with Model being trained, and what is compatible should be described in the
  // used TrainingPipeline's [training_task_definition]
  // [google.cloud.aiplatform.v1.TrainingPipeline.training_task_definition].
  // For tabular Datasets, all their data is exported to training, to pick
  // and choose from.
  string dataset_id = 1 [(google.api.field_behavior) = REQUIRED];

  // Applicable only to Datasets that have DataItems and Annotations.
  //
  // A filter on Annotations of the Dataset. Only Annotations that both
  // match this filter and belong to DataItems not ignored by the split method
  // are used in respectively training, validation or test role, depending on
  // the role of the DataItem they are on (for the auto-assigned that role is
  // decided by Vertex AI). A filter with same syntax as the one used in
  // [ListAnnotations][google.cloud.aiplatform.v1.DatasetService.ListAnnotations]
  // may be used, but note here it filters across all Annotations of the
  // Dataset, and not just within a single DataItem.
  string annotations_filter = 6;

  // Applicable only to custom training with Datasets that have DataItems and
  // Annotations.
  //
  // Cloud Storage URI that points to a YAML file describing the annotation
  // schema. The schema is defined as an OpenAPI 3.0.2 [Schema
  // Object](https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.0.2.md#schemaObject).
  // The schema files that can be used here are found in
  // gs://google-cloud-aiplatform/schema/dataset/annotation/ , note that the
  // chosen schema must be consistent with
  // [metadata][google.cloud.aiplatform.v1.Dataset.metadata_schema_uri] of the
  // Dataset specified by
  // [dataset_id][google.cloud.aiplatform.v1.InputDataConfig.dataset_id].
  //
  // Only Annotations that both match this schema and belong to DataItems not
  // ignored by the split method are used in respectively training, validation
  // or test role, depending on the role of the DataItem they are on.
  //
  // When used in conjunction with
  // [annotations_filter][google.cloud.aiplatform.v1.InputDataConfig.annotations_filter],
  // the Annotations used for training are filtered by both
  // [annotations_filter][google.cloud.aiplatform.v1.InputDataConfig.annotations_filter]
  // and
  // [annotation_schema_uri][google.cloud.aiplatform.v1.InputDataConfig.annotation_schema_uri].
  string annotation_schema_uri = 9;

  // Only applicable to Datasets that have SavedQueries.
  //
  // The ID of a SavedQuery (annotation set) under the Dataset specified by
  // [dataset_id][google.cloud.aiplatform.v1.InputDataConfig.dataset_id] used
  // for filtering Annotations for training.
  //
  // Only Annotations that are associated with this SavedQuery are used in
  // respectively training. When used in conjunction with
  // [annotations_filter][google.cloud.aiplatform.v1.InputDataConfig.annotations_filter],
  // the Annotations used for training are filtered by both
  // [saved_query_id][google.cloud.aiplatform.v1.InputDataConfig.saved_query_id]
  // and
  // [annotations_filter][google.cloud.aiplatform.v1.InputDataConfig.annotations_filter].
  //
  // Only one of
  // [saved_query_id][google.cloud.aiplatform.v1.InputDataConfig.saved_query_id]
  // and
  // [annotation_schema_uri][google.cloud.aiplatform.v1.InputDataConfig.annotation_schema_uri]
  // should be specified as both of them represent the same thing: problem type.
  string saved_query_id = 7;

  // Whether to persist the ML use assignment to data item system labels.
  bool persist_ml_use_assignment = 11;
}

// Assigns the input data to training, validation, and test sets as per the
// given fractions. Any of `training_fraction`, `validation_fraction` and
// `test_fraction` may optionally be provided, they must sum to up to 1. If the
// provided ones sum to less than 1, the remainder is assigned to sets as
// decided by Vertex AI. If none of the fractions are set, by default roughly
// 80% of data is used for training, 10% for validation, and 10% for test.
message FractionSplit {
  // The fraction of the input data that is to be used to train the Model.
  double training_fraction = 1;

  // The fraction of the input data that is to be used to validate the Model.
  double validation_fraction = 2;

  // The fraction of the input data that is to be used to evaluate the Model.
  double test_fraction = 3;
}

// Assigns input data to training, validation, and test sets based on the given
// filters, data pieces not matched by any filter are ignored. Currently only
// supported for Datasets containing DataItems.
// If any of the filters in this message are to match nothing, then they can be
// set as '-' (the minus sign).
//
// Supported only for unstructured Datasets.
//
message FilterSplit {
  // Required. A filter on DataItems of the Dataset. DataItems that match
  // this filter are used to train the Model. A filter with same syntax
  // as the one used in
  // [DatasetService.ListDataItems][google.cloud.aiplatform.v1.DatasetService.ListDataItems]
  // may be used. If a single DataItem is matched by more than one of the
  // FilterSplit filters, then it is assigned to the first set that applies to
  // it in the training, validation, test order.
  string training_filter = 1 [(google.api.field_behavior) = REQUIRED];

  // Required. A filter on DataItems of the Dataset. DataItems that match
  // this filter are used to validate the Model. A filter with same syntax
  // as the one used in
  // [DatasetService.ListDataItems][google.cloud.aiplatform.v1.DatasetService.ListDataItems]
  // may be used. If a single DataItem is matched by more than one of the
  // FilterSplit filters, then it is assigned to the first set that applies to
  // it in the training, validation, test order.
  string validation_filter = 2 [(google.api.field_behavior) = REQUIRED];

  // Required. A filter on DataItems of the Dataset. DataItems that match
  // this filter are used to test the Model. A filter with same syntax
  // as the one used in
  // [DatasetService.ListDataItems][google.cloud.aiplatform.v1.DatasetService.ListDataItems]
  // may be used. If a single DataItem is matched by more than one of the
  // FilterSplit filters, then it is assigned to the first set that applies to
  // it in the training, validation, test order.
  string test_filter = 3 [(google.api.field_behavior) = REQUIRED];
}

// Assigns input data to training, validation, and test sets based on the
// value of a provided key.
//
// Supported only for tabular Datasets.
message PredefinedSplit {
  // Required. The key is a name of one of the Dataset's data columns.
  // The value of the key (either the label's value or value in the column)
  // must be one of {`training`, `validation`, `test`}, and it defines to which
  // set the given piece of data is assigned. If for a piece of data the key
  // is not present or has an invalid value, that piece is ignored by the
  // pipeline.
  string key = 1 [(google.api.field_behavior) = REQUIRED];
}

// Assigns input data to training, validation, and test sets based on a
// provided timestamps. The youngest data pieces are assigned to training set,
// next to validation set, and the oldest to the test set.
//
// Supported only for tabular Datasets.
message TimestampSplit {
  // The fraction of the input data that is to be used to train the Model.
  double training_fraction = 1;

  // The fraction of the input data that is to be used to validate the Model.
  double validation_fraction = 2;

  // The fraction of the input data that is to be used to evaluate the Model.
  double test_fraction = 3;

  // Required. The key is a name of one of the Dataset's data columns.
  // The values of the key (the values in the column) must be in RFC 3339
  // `date-time` format, where `time-offset` = `"Z"`
  // (e.g. 1985-04-12T23:20:50.52Z). If for a piece of data the key is not
  // present or has an invalid value, that piece is ignored by the pipeline.
  string key = 4 [(google.api.field_behavior) = REQUIRED];
}

// Assigns input data to the training, validation, and test sets so that the
// distribution of values found in the categorical column (as specified by the
// `key` field) is mirrored within each split. The fraction values determine
// the relative sizes of the splits.
//
// For example, if the specified column has three values, with 50% of the rows
// having value "A", 25% value "B", and 25% value "C", and the split fractions
// are specified as 80/10/10, then the training set will constitute 80% of the
// training data, with about 50% of the training set rows having the value "A"
// for the specified column, about 25% having the value "B", and about 25%
// having the value "C".
//
// Only the top 500 occurring values are used; any values not in the top
// 500 values are randomly assigned to a split. If less than three rows contain
// a specific value, those rows are randomly assigned.
//
// Supported only for tabular Datasets.
message StratifiedSplit {
  // The fraction of the input data that is to be used to train the Model.
  double training_fraction = 1;

  // The fraction of the input data that is to be used to validate the Model.
  double validation_fraction = 2;

  // The fraction of the input data that is to be used to evaluate the Model.
  double test_fraction = 3;

  // Required. The key is a name of one of the Dataset's data columns.
  // The key provided must be for a categorical column.
  string key = 4 [(google.api.field_behavior) = REQUIRED];
}
