syntax = "proto3";

package neo.fs.v2.netmap;

option go_package = "github.com/nspcc-dev/neofs-api-go/v2/netmap/grpc;netmap";
option csharp_namespace = "NeoFS.API.v2.Netmap";

// Set of rules to select a subset of nodes able to store container's objects
message PlacementPolicy {
  // Replication factor
  uint32 repl_factor = 1;

  // Filters to apply to Network Map
  message FilterGroup {
    // Filter definition
    message Filter {
      // Filter identifier
      string key = 1;

      // Minimal simple filter
      message SimpleFilter {
        // Filtering operation
        enum Operation {
          // No Operation defined
          OPERATION_UNSPECIFIED= 0;

          // Equal
          EQ = 1;

          // Not Equal
          NE = 2;

          // Greater then
          GT = 3;

          // Greater or equal
          GE = 4;

          // Less then
          LT = 5;

          // Less or equal
          LE = 6;

          // Logical OR
          OR = 7;

          // Logical AND
          AND = 8;
        }
        // Filtering operation
        Operation op = 1;

        // List of filters
        message SimpleFilters {
          // List of filters
          repeated SimpleFilter filters = 1;
        }

        // Filtering operation argument
        oneof args {
          // Value
          string value = 2;
          // Result of other filter application
          SimpleFilters f_args = 3;
        }
      }
      // The rest of filter
      SimpleFilter f = 2;
    }

    // Resulting filter list
    repeated Filter filters = 1;

    // Selector
    message Selector {
      // How many to select
      uint32 count = 1;
      // Key to select
      string key = 2;
    }

    // List of selectors
    repeated Selector selectors = 2;

    // Parts of graph to exclude. Internal use.
    repeated uint32 exclude = 3;
  }
  // List of filter groups
  repeated FilterGroup filter_groups = 2;
}

// NeoFS node description
message NodeInfo {
  // Ways to connect to a node
  string address = 1;

  // Public key of the NeoFS node in a binary format.
  bytes public_key = 2;

  // Attributes of the NeoFS node.
  message Attribute {
    // Key of the node attribute.
    string key = 1;

    // Value of the node attribute.
    string value = 2;
  }
  // Carries list of the NeoFS node attributes in a string key-value format.
  repeated Attribute attributes = 3;

  // Represents the enumeration of various states of the NeoFS node.
  enum State {
    // Unknown state.
     UNSPECIFIED = 0;

    // Active state in the network.
    ONLINE = 1;

    // Network unavailable state.
    OFFLINE = 2;
  }

  // Carries state of the NeoFS node.
  State state = 4;
}