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-rw-r--r--src/model/prev/v051/version_table.rs79
1 files changed, 79 insertions, 0 deletions
diff --git a/src/model/prev/v051/version_table.rs b/src/model/prev/v051/version_table.rs
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+use serde::{Deserialize, Serialize};
+
+use garage_util::data::*;
+
+use garage_table::crdt::*;
+use garage_table::*;
+
+/// A version of an object
+#[derive(PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
+pub struct Version {
+ /// UUID of the version, used as partition key
+ pub uuid: Uuid,
+
+ // Actual data: the blocks for this version
+ // In the case of a multipart upload, also store the etags
+ // of individual parts and check them when doing CompleteMultipartUpload
+ /// Is this version deleted
+ pub deleted: crdt::Bool,
+ /// list of blocks of data composing the version
+ pub blocks: crdt::Map<VersionBlockKey, VersionBlock>,
+ /// Etag of each part in case of a multipart upload, empty otherwise
+ pub parts_etags: crdt::Map<u64, String>,
+
+ // Back link to bucket+key so that we can figure if
+ // this was deleted later on
+ /// Bucket in which the related object is stored
+ pub bucket: String,
+ /// Key in which the related object is stored
+ pub key: String,
+}
+
+#[derive(PartialEq, Eq, Clone, Copy, Debug, Serialize, Deserialize)]
+pub struct VersionBlockKey {
+ /// Number of the part
+ pub part_number: u64,
+ /// Offset of this sub-segment in its part
+ pub offset: u64,
+}
+
+impl Ord for VersionBlockKey {
+ fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+ self.part_number
+ .cmp(&other.part_number)
+ .then(self.offset.cmp(&other.offset))
+ }
+}
+
+impl PartialOrd for VersionBlockKey {
+ fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+ Some(self.cmp(other))
+ }
+}
+
+/// Informations about a single block
+#[derive(PartialEq, Eq, Ord, PartialOrd, Clone, Copy, Debug, Serialize, Deserialize)]
+pub struct VersionBlock {
+ /// Blake2 sum of the block
+ pub hash: Hash,
+ /// Size of the block
+ pub size: u64,
+}
+
+impl AutoCrdt for VersionBlock {
+ const WARN_IF_DIFFERENT: bool = true;
+}
+
+impl Crdt for Version {
+ fn merge(&mut self, other: &Self) {
+ self.deleted.merge(&other.deleted);
+
+ if self.deleted.get() {
+ self.blocks.clear();
+ self.parts_etags.clear();
+ } else {
+ self.blocks.merge(&other.blocks);
+ self.parts_etags.merge(&other.parts_etags);
+ }
+ }
+}