Class BuildBazelRemoteExecutionV2Digest
A content digest. A digest for a given blob consists of the size of the blob and its hash. The hash algorithm to
use is defined by the server. The size is considered to be an integral part of the digest and cannot be
separated. That is, even if the hash
field is correctly specified but size_bytes
is not, the server MUST
reject the request. The reason for including the size in the digest is as follows: in a great many cases, the
server needs to know the size of the blob it is about to work with prior to starting an operation with it, such
as flattening Merkle tree structures or streaming it to a worker. Technically, the server could implement a
separate metadata store, but this results in a significantly more complicated implementation as opposed to
having the client specify the size up-front (or storing the size along with the digest in every message where
digests are embedded). This does mean that the API leaks some implementation details of (what we consider to be)
a reasonable server implementation, but we consider this to be a worthwhile tradeoff. When a Digest
is used to
refer to a proto message, it always refers to the message in binary encoded form. To ensure consistent hashing,
clients and servers MUST ensure that they serialize messages according to the following rules, even if there are
alternate valid encodings for the same message: * Fields are serialized in tag order. * There are no unknown
fields. * There are no duplicate fields. * Fields are serialized according to the default semantics for their
type. Most protocol buffer implementations will always follow these rules when serializing, but care should be
taken to avoid shortcuts. For instance, concatenating two messages to merge them may produce duplicate fields.
Inheritance
Implements
Inherited Members
Namespace: Google.Apis.RemoteBuildExecution.v2.Data
Assembly: Google.Apis.RemoteBuildExecution.v2.dll
Syntax
public class BuildBazelRemoteExecutionV2Digest : IDirectResponseSchema
Properties
ETag
The ETag of the item.
Declaration
public virtual string ETag { get; set; }
Property Value
Type | Description |
---|---|
System.String |
Hash
The hash. In the case of SHA-256, it will always be a lowercase hex string exactly 64 characters long.
Declaration
[JsonProperty("hash")]
public virtual string Hash { get; set; }
Property Value
Type | Description |
---|---|
System.String |
SizeBytes
The size of the blob, in bytes.
Declaration
[JsonProperty("sizeBytes")]
public virtual long? SizeBytes { get; set; }
Property Value
Type | Description |
---|---|
System.Nullable<System.Int64> |