frostfs-api/object/types.proto

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syntax = "proto3";
package neo.fs.v2.object;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object/grpc;object";
option csharp_namespace = "Neo.FileStorage.API.Object";
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import "refs/types.proto";
import "session/types.proto";
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// Type of the object payload content. Only `REGULAR` type objects can be split,
// hence `TOMBSTONE` and `LOCK` payload is limited by the
// maximum object size.
//
// String presentation of object type is the same as definition:
// * REGULAR
// * TOMBSTONE
// * LOCK
enum ObjectType {
// Just a normal object
REGULAR = 0;
// Used internally to identify deleted objects
TOMBSTONE = 1;
// Unused (previously storageGroup information)
// _ = 2;
// Object lock
LOCK = 3;
}
// Type of match expression
enum MatchType {
// Unknown. Not used
MATCH_TYPE_UNSPECIFIED = 0;
// Full string match
STRING_EQUAL = 1;
// Full string mismatch
STRING_NOT_EQUAL = 2;
// Lack of key
NOT_PRESENT = 3;
// String prefix match
COMMON_PREFIX = 4;
}
// Short header fields
message ShortHeader {
// Object format version. Effectively, the version of API library used to
// create particular object.
neo.fs.v2.refs.Version version = 1 [ json_name = "version" ];
// Epoch when the object was created
uint64 creation_epoch = 2 [ json_name = "creationEpoch" ];
// Object's owner
neo.fs.v2.refs.OwnerID owner_id = 3 [ json_name = "ownerID" ];
// Type of the object payload content
ObjectType object_type = 4 [ json_name = "objectType" ];
// Size of payload in bytes.
// `0xFFFFFFFFFFFFFFFF` means `payload_length` is unknown
uint64 payload_length = 5 [ json_name = "payloadLength" ];
// Hash of payload bytes
neo.fs.v2.refs.Checksum payload_hash = 6 [ json_name = "payloadHash" ];
// Homomorphic hash of the object payload
neo.fs.v2.refs.Checksum homomorphic_hash = 7
[ json_name = "homomorphicHash" ];
}
// Object Header
message Header {
// Object format version. Effectively, the version of API library used to
// create particular object
neo.fs.v2.refs.Version version = 1 [ json_name = "version" ];
// Object's container
neo.fs.v2.refs.ContainerID container_id = 2 [ json_name = "containerID" ];
// Object's owner
neo.fs.v2.refs.OwnerID owner_id = 3 [ json_name = "ownerID" ];
// Object creation Epoch
uint64 creation_epoch = 4 [ json_name = "creationEpoch" ];
// Size of payload in bytes.
// `0xFFFFFFFFFFFFFFFF` means `payload_length` is unknown.
uint64 payload_length = 5 [ json_name = "payloadLength" ];
// Hash of payload bytes
neo.fs.v2.refs.Checksum payload_hash = 6 [ json_name = "payloadHash" ];
// Type of the object payload content
ObjectType object_type = 7 [ json_name = "objectType" ];
// Homomorphic hash of the object payload
neo.fs.v2.refs.Checksum homomorphic_hash = 8
[ json_name = "homomorphicHash" ];
// Session token, if it was used during Object creation. Need it to verify
// integrity and authenticity out of Request scope.
neo.fs.v2.session.SessionToken session_token = 9
[ json_name = "sessionToken" ];
// `Attribute` is a user-defined Key-Value metadata pair attached to an
// object.
//
// Key name must be an object-unique valid UTF-8 string. Value can't be empty.
// Objects with duplicated attribute names or attributes with empty values
// will be considered invalid.
//
// There are some "well-known" attributes starting with `__SYSTEM__`
// (`__NEOFS__` is deprecated) prefix that affect system behaviour:
//
// * [ __SYSTEM__UPLOAD_ID ] \
// (`__NEOFS__UPLOAD_ID` is deprecated) \
// Marks smaller parts of a split bigger object
// * [ __SYSTEM__EXPIRATION_EPOCH ] \
// (`__NEOFS__EXPIRATION_EPOCH` is deprecated) \
// The epoch after which object with no LOCKs on it becomes unavailable.
// Locked object continues to be available until each of the LOCKs expire.
// * [ __SYSTEM__TICK_EPOCH ] \
// (`__NEOFS__TICK_EPOCH` is deprecated) \
// Decimal number that defines what epoch must produce
// object notification with UTF-8 object address in a
// body (`0` value produces notification right after
// object put)
// * [ __SYSTEM__TICK_TOPIC ] \
// (`__NEOFS__TICK_TOPIC` is deprecated) \
// UTF-8 string topic ID that is used for object notification
//
// And some well-known attributes used by applications only:
//
// * Name \
// Human-friendly name
// * FileName \
// File name to be associated with the object on saving
// * FilePath \
// Full path to be associated with the object on saving. Should start with a
// '/' and use '/' as a delimiting symbol. Trailing '/' should be
// interpreted as a virtual directory marker. If an object has conflicting
// FilePath and FileName, FilePath should have higher priority, because it
// is used to construct the directory tree. FilePath with trailing '/' and
// non-empty FileName attribute should not be used together.
// * Timestamp \
// User-defined local time of object creation in Unix Timestamp format
// * Content-Type \
// MIME Content Type of object's payload
//
// For detailed description of each well-known attribute please see the
// corresponding section in NeoFS Technical Specification.
message Attribute {
// string key to the object attribute
string key = 1 [ json_name = "key" ];
// string value of the object attribute
string value = 2 [ json_name = "value" ];
}
// User-defined object attributes
repeated Attribute attributes = 10 [ json_name = "attributes" ];
// Bigger objects can be split into a chain of smaller objects. Information
// about inter-dependencies between spawned objects and how to re-construct
// the original one is in the `Split` headers. Parent and children objects
// must be within the same container.
message Split {
// Identifier of the origin object. Known only to the minor child.
neo.fs.v2.refs.ObjectID parent = 1 [ json_name = "parent" ];
// Identifier of the left split neighbor
neo.fs.v2.refs.ObjectID previous = 2 [ json_name = "previous" ];
// `signature` field of the parent object. Used to reconstruct parent.
neo.fs.v2.refs.Signature parent_signature = 3
[ json_name = "parentSignature" ];
// `header` field of the parent object. Used to reconstruct parent.
Header parent_header = 4 [ json_name = "parentHeader" ];
// List of identifiers of the objects generated by splitting current one.
repeated neo.fs.v2.refs.ObjectID children = 5 [ json_name = "children" ];
// 16 byte UUIDv4 used to identify the split object hierarchy parts. Must be
// unique inside container. All objects participating in the split must have
// the same `split_id` value.
bytes split_id = 6 [ json_name = "splitID" ];
}
// Position of the object in the split hierarchy
Split split = 11 [ json_name = "split" ];
// Erasure code can be applied to any object.
// Information about encoded object structure is stored in `EC` header.
// All objects belonging to a single EC group have the same `parent` field.
message EC {
// Identifier of the origin object. Known to all chunks.
neo.fs.v2.refs.ObjectID parent = 1 [ json_name = "parent" ];
// Index of this chunk.
uint32 index = 2 [ json_name = "index" ];
// Total number of chunks in this split.
uint32 total = 3 [ json_name = "total" ];
// Total length of a parent header. Used to trim padding zeroes.
uint32 header_length = 4 [ json_name = "headerLength" ];
// Chunk of a parent header.
bytes header = 5 [ json_name = "header" ];
// As the origin object is EC-splitted its identifier is known to all
// chunks as parent. But parent itself can be a part of Split (does not
// relate to EC-split). In this case parent_split_id should be set.
bytes parent_split_id = 6 [ json_name = "parentSplitID" ];
// EC-parent's parent ID. parent_split_parent_id is set if EC-parent,
// itself, is a part of Split and if an object ID of its parent is
// presented. The field allows to determine how EC-chunk is placed in Split
// hierarchy.
neo.fs.v2.refs.ObjectID parent_split_parent_id = 7
[ json_name = "parentSplitParentID" ];
// EC parent's attributes.
repeated Attribute parent_attributes = 8 [ json_name = "parentAttributes" ];
}
// Erasure code chunk information.
EC ec = 12 [ json_name = "ec" ];
}
// Object structure. Object is immutable and content-addressed. It means
// `ObjectID` will change if the header or the payload changes. It's calculated
// as a hash of header field which contains hash of the object's payload.
//
// For non-regular object types payload format depends on object type specified
// in the header.
message Object {
// Object's unique identifier.
neo.fs.v2.refs.ObjectID object_id = 1 [ json_name = "objectID" ];
// Signed object_id
neo.fs.v2.refs.Signature signature = 2 [ json_name = "signature" ];
// Object metadata headers
Header header = 3 [ json_name = "header" ];
// Payload bytes
bytes payload = 4 [ json_name = "payload" ];
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}
// Meta information of split hierarchy for object assembly. With the last part
// one can traverse linked list of split hierarchy back to the first part and
// assemble the original object. With a linking object one can assemble an
// object right from the object parts.
message SplitInfo {
// 16 byte UUID used to identify the split object hierarchy parts.
bytes split_id = 1;
// The identifier of the last object in split hierarchy parts. It contains
// split header with the original object header.
neo.fs.v2.refs.ObjectID last_part = 2;
// The identifier of a linking object for split hierarchy parts. It contains
// split header with the original object header and a sorted list of
// object parts.
neo.fs.v2.refs.ObjectID link = 3;
}
// Meta information for the erasure-encoded object.
message ECInfo {
message Chunk {
// Object ID of the chunk.
neo.fs.v2.refs.ObjectID id = 1;
// Index of the chunk.
uint32 index = 2;
// Total number of chunks in this split.
uint32 total = 3;
}
// Chunk stored on the node.
repeated Chunk chunks = 1;
}