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// Copyright 2024 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.visionai.v1;

option csharp_namespace = "Google.Cloud.VisionAI.V1";
option go_package = "cloud.google.com/go/visionai/apiv1/visionaipb;visionaipb";
option java_multiple_files = true;
option java_outer_classname = "LvaProto";
option java_package = "com.google.cloud.visionai.v1";
option php_namespace = "Google\\Cloud\\VisionAI\\V1";
option ruby_package = "Google::Cloud::VisionAI::V1";

// RunMode represents the mode to launch the Process on.
enum RunMode {
  // Mode is unspecified.
  RUN_MODE_UNSPECIFIED = 0;

  // Live mode. Meaning the Process is launched to handle live video
  // source, and possible packet drops are expected.
  LIVE = 1;

  // Submission mode. Meaning the Process is launched to handle bounded video
  // files, with no packet drop. Completion status is tracked.
  SUBMISSION = 2;
}

// Defines the interface of an Operator.
//
// Arguments to an operator are input/output streams that are getting
// processesed/returned while attributes are fixed configuration parameters.
message OperatorDefinition {
  // Defines an argument to an operator.
  //
  // Used for both inputs and outputs.
  message ArgumentDefinition {
    // The name of the argument.
    //
    // Tentatively [a-z]([_a-z0-9]*[a-z0-9])?, e.g., video, audio,
    // high_fps_frame.
    string argument = 1;

    // The data type of the argument.
    //
    // This should match the textual representation of a stream/Packet type.
    string type = 2;
  }

  // Defines an attribute of an operator.
  message AttributeDefinition {
    // The name of the attribute.
    //
    // Tentatively [a-z]([_a-z0-9]*[a-z0-9])?, e.g., max_frames_per_video,
    // resize_height.
    string attribute = 1;

    // The type of this attribute.
    //
    // See attribute_value.proto for possibilities.
    string type = 2;

    // The default value for the attribute.
    AttributeValue default_value = 3;
  }

  // The name of this operator.
  //
  // Tentatively [A-Z][a-zA-Z0-9]*, e.g., BboxCounter, PetDetector,
  // PetDetector1.
  string operator = 1;

  // Declares input arguments.
  repeated ArgumentDefinition input_args = 2;

  // Declares output arguments.
  repeated ArgumentDefinition output_args = 3;

  // Declares the attributes.
  repeated AttributeDefinition attributes = 4;

  // The resources for running the operator.
  ResourceSpecification resources = 5;

  // Short description of the operator.
  string short_description = 6;

  // Full description of the operator.
  string description = 7;
}

// ResourceSpec collects a set of resources that can
// be used to specify requests and requirements.
//
// Note: Highly experimental as this can be runtime dependent.
// Can use the "extras" field to experiment first before trying
// to abstract it.
message ResourceSpecification {
  // CPU specification.
  //
  // Examples:
  // "100m", "0.5", "1", "2", ... correspond to
  // 0.1, half, 1, or 2 cpus.
  //
  // Leave empty to let the system decide.
  //
  // Note that this does *not* determine the cpu vender/make,
  // or its underlying clock speed and specific SIMD features.
  // It is only the amount time it requires in timeslicing.
  string cpu = 1;

  // CPU limit.
  //
  // Examples:
  // "100m", "0.5", "1", "2", ... correspond to
  // 0.1, half, 1, or 2 cpus.
  //
  // Leave empty to indicate no limit.
  string cpu_limits = 5;

  // Memory specification (in bytes).
  //
  // Examples:
  // "128974848", "129e6", "129M", "123Mi", ... correspond to
  // 128974848 bytes, 129000000 bytes, 129 mebibytes, 123 megabytes.
  //
  // Leave empty to let the system decide.
  string memory = 2;

  // Memory usage limits.
  //
  // Examples:
  // "128974848", "129e6", "129M", "123Mi", ... correspond to
  // 128974848 bytes, 129000000 bytes, 129 mebibytes, 123 megabytes.
  //
  // Leave empty to indicate no limit.
  string memory_limits = 6;

  // Number of gpus.
  int32 gpus = 3;

  // The maximum latency that this operator may use to process an element.
  //
  // If non positive, then a system default will be used.
  // Operator developers should arrange for the system compute resources to be
  // aligned with this latency budget; e.g. if you want a ML model to produce
  // results within 500ms, then you should make sure you request enough
  // cpu/gpu/memory to achieve that.
  int32 latency_budget_ms = 4;
}

// Represents an actual value of an operator attribute.
message AttributeValue {
  // Attribute value.
  oneof value {
    // int.
    int64 i = 1;

    // float.
    float f = 2;

    // bool.
    bool b = 3;

    // string.
    bytes s = 4;
  }
}

// Defines an Analyzer.
//
// An analyzer processes data from its input streams using the logic defined in
// the Operator that it represents. Of course, it produces data for the output
// streams declared in the Operator.
message AnalyzerDefinition {
  // The inputs to this analyzer.
  //
  // We accept input name references of the following form:
  // :
  //
  // Example:
  //
  // Suppose you had an operator named "SomeOp" that has 2 output
  // arguments, the first of which is named "foo" and the second of which is
  // named "bar", and an operator named "MyOp" that accepts 2 inputs.
  //
  // Also suppose that there is an analyzer named "some-analyzer" that is
  // running "SomeOp" and another analyzer named "my-analyzer" running "MyOp".
  //
  // To indicate that "my-analyzer" is to consume "some-analyzer"'s "foo"
  // output as its first input and "some-analyzer"'s "bar" output as its
  // second input, you can set this field to the following:
  // input = ["some-analyzer:foo", "some-analyzer:bar"]
  message StreamInput {
    // The name of the stream input (as discussed above).
    string input = 1;
  }

  // Options available for debugging purposes only.
  message DebugOptions {
    // Environment variables.
    map environment_variables = 1;
  }

  // Option related to the operator.
  message OperatorOption {
    // Tag of the operator.
    string tag = 1;

    // Registry of the operator. e.g. public, dev.
    string registry = 2;
  }

  // The name of this analyzer.
  //
  // Tentatively [a-z][a-z0-9]*(_[a-z0-9]+)*.
  string analyzer = 1;

  // The name of the operator that this analyzer runs.
  //
  // Must match the name of a supported operator.
  string operator = 2;

  // Input streams.
  repeated StreamInput inputs = 3;

  // The attribute values that this analyzer applies to the operator.
  //
  // Supply a mapping between the attribute names and the actual value you wish
  // to apply. If an attribute name is omitted, then it will take a
  // preconfigured default value.
  map attrs = 4;

  // Debug options.
  DebugOptions debug_options = 5;

  // Operator option.
  OperatorOption operator_option = 6;
}

// Defines a full analysis.
//
// This is a description of the overall live analytics pipeline.
// You may think of this as an edge list representation of a multigraph.
//
// This may be directly authored by a human in protobuf textformat, or it may be
// generated by a programming API (perhaps Python or JavaScript depending on
// context).
message AnalysisDefinition {
  // Analyzer definitions.
  repeated AnalyzerDefinition analyzers = 1;
}

// Message describing the status of the Process.
message RunStatus {
  // State represents the running status of the Process.
  enum State {
    // State is unspecified.
    STATE_UNSPECIFIED = 0;

    // INITIALIZING means the Process is scheduled but yet ready to handle
    // real traffic.
    INITIALIZING = 1;

    // RUNNING means the Process is up running and handling traffic.
    RUNNING = 2;

    // COMPLETED means the Process has completed the processing, especially
    // for non-streaming use case.
    COMPLETED = 3;

    // FAILED means the Process failed to complete the processing.
    FAILED = 4;

    // PENDING means the Process is created but yet to be scheduled.
    PENDING = 5;
  }

  // The state of the Process.
  State state = 1;

  // The reason of becoming the state.
  string reason = 2;
}