syntax = "proto3";

package control;

option go_package = "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control";

// Signature of some message.
message Signature {
    // Public key used for signing.
    bytes key = 1 [json_name = "key"];

    // Binary signature.
    bytes sign = 2 [json_name = "signature"];
}

// Status of the storage node in the FrostFS network map.
enum NetmapStatus {
    // Undefined status, default value.
    STATUS_UNDEFINED = 0;

    // Node is online.
    ONLINE = 1;

    // Node is offline.
    OFFLINE = 2;

    // Node is maintained by the owner.
    MAINTENANCE = 3;
}

// FrostFS node description.
message NodeInfo {
    // Public key of the FrostFS node in a binary format.
    bytes public_key = 1 [json_name = "publicKey"];

    // Ways to connect to a node.
    repeated string addresses = 2 [json_name = "addresses"];

    // Administrator-defined Attributes of the FrostFS Storage Node.
    //
    // `Attribute` is a Key-Value metadata pair. Key name must be a valid UTF-8
    // string. Value can't be empty.
    //
    // Node's attributes are mostly used during Storage Policy evaluation to
    // calculate object's placement and find a set of nodes satisfying policy
    // requirements. There are some "well-known" node attributes common to all the
    // Storage Nodes in the network and used implicitly with default values if not
    // explicitly set:
    //
    // * Capacity \
    //   Total available disk space in Gigabytes.
    // * Price \
    //   Price in GAS tokens for storing one GB of data during one Epoch. In node
    //   attributes it's a string presenting floating point number with comma or
    //   point delimiter for decimal part. In the Network Map it will be saved as
    //   64-bit unsigned integer representing number of minimal token fractions.
    // * Locode \
    //   Node's geographic location in
    //   [UN/LOCODE](https://www.unece.org/cefact/codesfortrade/codes_index.html)
    //   format approximated to the nearest point defined in standard.
    // * Country \
    //   Country code in
    //   [ISO 3166-1_alpha-2](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2)
    //   format. Calculated automatically from `Locode` attribute
    // * Region \
    //   Country's administative subdivision where node is located. Calculated
    //   automatically from `Locode` attribute based on `SubDiv` field. Presented
    //   in [ISO 3166-2](https://en.wikipedia.org/wiki/ISO_3166-2) format.
    // * City \
    //   City, town, village or rural area name where node is located written
    //   without diacritics . Calculated automatically from `Locode` attribute.
    //
    // For detailed description of each well-known attribute please see the
    // corresponding section in FrostFS Technical specification.
    message Attribute {
        // Key of the node attribute.
        string key = 1 [json_name = "key"];

        // Value of the node attribute.
        string value = 2 [json_name = "value"];

        // Parent keys, if any. For example for `City` it could be `Region` and
        // `Country`.
        repeated string parents = 3 [json_name = "parents"];
    }
    // Carries list of the FrostFS node attributes in a key-value form. Key name
    // must be a node-unique valid UTF-8 string. Value can't be empty. NodeInfo
    // structures with duplicated attribute names or attributes with empty values
    // will be considered invalid.
    repeated Attribute attributes = 3 [json_name = "attributes"];

    // Carries state of the FrostFS node.
    NetmapStatus state = 4 [json_name = "state"];
}

// Network map structure.
message Netmap {
    // Network map revision number.
    uint64 epoch = 1 [json_name = "epoch"];

    // Nodes presented in network.
    repeated NodeInfo nodes = 2 [json_name = "nodes"];
}

// Health status of the storage node application.
enum HealthStatus {
    // Undefined status, default value.
    HEALTH_STATUS_UNDEFINED = 0;

    // Storage node application is starting.
    STARTING = 1;

    // Storage node application is started and serves all services.
    READY = 2;

    // Storage node application is shutting down.
    SHUTTING_DOWN = 3;

    // Storage node application is reconfiguring.
    RECONFIGURING = 4;
}

// Shard description.
message ShardInfo {
    // ID of the shard.
    bytes shard_ID = 1 [json_name = "shardID"];

    // Path to shard's metabase.
    string metabase_path = 2 [json_name = "metabasePath"];

    // Shard's blobstor info.
    repeated BlobstorInfo blobstor = 3 [json_name = "blobstor"];

    // Path to shard's write-cache, empty if disabled.
    string writecache_path = 4 [json_name = "writecachePath"];

    // Work mode of the shard.
    ShardMode mode = 5;

    // Amount of errors occured.
    uint32 errorCount = 6;

    // Path to shard's pilorama storage.
    string pilorama_path = 7 [json_name = "piloramaPath"];
}

// Blobstor component description.
message BlobstorInfo {
    // Path to the root.
    string path = 1 [json_name = "path"];
    // Component type.
    string type = 2 [json_name = "type"];
}

// Work mode of the shard.
enum ShardMode {
    // Undefined mode, default value.
    SHARD_MODE_UNDEFINED = 0;

    // Read-write.
    READ_WRITE = 1;

    // Read-only.
    READ_ONLY = 2;

    // Degraded.
    DEGRADED = 3;

    // DegradedReadOnly.
    DEGRADED_READ_ONLY = 4;
}


// ChainTarget is an object to which local overrides
// are applied.
message ChainTarget {
    enum TargetType {
        UNDEFINED = 0;

        NAMESPACE = 1;

        CONTAINER = 2;
    }

    TargetType type = 1;

    string Name = 2;
}