LCOV - code coverage report
Current view: top level - pageserver/src/tenant/remote_timeline_client - index.rs (source / functions) Coverage Total Hit
Test: bb522999b2ee0ee028df22bb188d3a84170ba700.info Lines: 91.8 % 417 383
Test Date: 2024-07-21 16:16:09 Functions: 49.1 % 57 28

            Line data    Source code
       1              : //! In-memory index to track the tenant files on the remote storage.
       2              : //! Able to restore itself from the storage index parts, that are located in every timeline's remote directory and contain all data about
       3              : //! remote timeline layers and its metadata.
       4              : 
       5              : use std::collections::HashMap;
       6              : 
       7              : use chrono::NaiveDateTime;
       8              : use pageserver_api::models::AuxFilePolicy;
       9              : use serde::{Deserialize, Serialize};
      10              : use utils::id::TimelineId;
      11              : 
      12              : use crate::tenant::metadata::TimelineMetadata;
      13              : use crate::tenant::storage_layer::LayerName;
      14              : use crate::tenant::Generation;
      15              : use pageserver_api::shard::ShardIndex;
      16              : 
      17              : use utils::lsn::Lsn;
      18              : 
      19              : /// In-memory representation of an `index_part.json` file
      20              : ///
      21              : /// Contains the data about all files in the timeline, present remotely and its metadata.
      22              : ///
      23              : /// This type needs to be backwards and forwards compatible. When changing the fields,
      24              : /// remember to add a test case for the changed version.
      25         2805 : #[derive(Debug, PartialEq, Eq, Clone, Serialize, Deserialize)]
      26              : pub struct IndexPart {
      27              :     /// Debugging aid describing the version of this type.
      28              :     #[serde(default)]
      29              :     version: usize,
      30              : 
      31              :     #[serde(default)]
      32              :     #[serde(skip_serializing_if = "Option::is_none")]
      33              :     pub deleted_at: Option<NaiveDateTime>,
      34              : 
      35              :     /// Per layer file name metadata, which can be present for a present or missing layer file.
      36              :     ///
      37              :     /// Older versions of `IndexPart` will not have this property or have only a part of metadata
      38              :     /// that latest version stores.
      39              :     pub layer_metadata: HashMap<LayerName, LayerFileMetadata>,
      40              : 
      41              :     /// Because of the trouble of eyeballing the legacy "metadata" field, we copied the
      42              :     /// "disk_consistent_lsn" out. After version 7 this is no longer needed, but the name cannot be
      43              :     /// reused.
      44              :     pub(super) disk_consistent_lsn: Lsn,
      45              : 
      46              :     // TODO: rename as "metadata" next week, keep the alias = "metadata_bytes", bump version Adding
      47              :     // the "alias = metadata" was forgotten in #7693, so we have to use "rewrite = metadata_bytes"
      48              :     // for backwards compatibility.
      49              :     #[serde(
      50              :         rename = "metadata_bytes",
      51              :         alias = "metadata",
      52              :         with = "crate::tenant::metadata::modern_serde"
      53              :     )]
      54              :     pub metadata: TimelineMetadata,
      55              : 
      56              :     #[serde(default)]
      57              :     pub(crate) lineage: Lineage,
      58              : 
      59              :     /// Describes the kind of aux files stored in the timeline.
      60              :     ///
      61              :     /// The value is modified during file ingestion when the latest wanted value communicated via tenant config is applied if it is acceptable.
      62              :     /// A V1 setting after V2 files have been committed is not accepted.
      63              :     ///
      64              :     /// None means no aux files have been written to the storage before the point
      65              :     /// when this flag is introduced.
      66              :     #[serde(skip_serializing_if = "Option::is_none", default)]
      67              :     pub(crate) last_aux_file_policy: Option<AuxFilePolicy>,
      68              : }
      69              : 
      70              : impl IndexPart {
      71              :     /// When adding or modifying any parts of `IndexPart`, increment the version so that it can be
      72              :     /// used to understand later versions.
      73              :     ///
      74              :     /// Version is currently informative only.
      75              :     /// Version history
      76              :     /// - 2: added `deleted_at`
      77              :     /// - 3: no longer deserialize `timeline_layers` (serialized format is the same, but timeline_layers
      78              :     ///      is always generated from the keys of `layer_metadata`)
      79              :     /// - 4: timeline_layers is fully removed.
      80              :     /// - 5: lineage was added
      81              :     /// - 6: last_aux_file_policy is added.
      82              :     /// - 7: metadata_bytes is no longer written, but still read
      83              :     const LATEST_VERSION: usize = 7;
      84              : 
      85              :     // Versions we may see when reading from a bucket.
      86              :     pub const KNOWN_VERSIONS: &'static [usize] = &[1, 2, 3, 4, 5, 6, 7];
      87              : 
      88              :     pub const FILE_NAME: &'static str = "index_part.json";
      89              : 
      90          396 :     pub(crate) fn empty(metadata: TimelineMetadata) -> Self {
      91          396 :         IndexPart {
      92          396 :             version: Self::LATEST_VERSION,
      93          396 :             layer_metadata: Default::default(),
      94          396 :             disk_consistent_lsn: metadata.disk_consistent_lsn(),
      95          396 :             metadata,
      96          396 :             deleted_at: None,
      97          396 :             lineage: Default::default(),
      98          396 :             last_aux_file_policy: None,
      99          396 :         }
     100          396 :     }
     101              : 
     102            0 :     pub fn version(&self) -> usize {
     103            0 :         self.version
     104            0 :     }
     105              : 
     106              :     /// If you want this under normal operations, read it from self.metadata:
     107              :     /// this method is just for the scrubber to use when validating an index.
     108            0 :     pub fn duplicated_disk_consistent_lsn(&self) -> Lsn {
     109            0 :         self.disk_consistent_lsn
     110            0 :     }
     111              : 
     112           16 :     pub fn from_s3_bytes(bytes: &[u8]) -> Result<Self, serde_json::Error> {
     113           16 :         serde_json::from_slice::<IndexPart>(bytes)
     114           16 :     }
     115              : 
     116         1371 :     pub fn to_s3_bytes(&self) -> serde_json::Result<Vec<u8>> {
     117         1371 :         serde_json::to_vec(self)
     118         1371 :     }
     119              : 
     120              :     #[cfg(test)]
     121           12 :     pub(crate) fn example() -> Self {
     122           12 :         Self::empty(TimelineMetadata::example())
     123           12 :     }
     124              : 
     125           12 :     pub(crate) fn last_aux_file_policy(&self) -> Option<AuxFilePolicy> {
     126           12 :         self.last_aux_file_policy
     127           12 :     }
     128              : }
     129              : 
     130              : /// Metadata gathered for each of the layer files.
     131              : ///
     132              : /// Fields have to be `Option`s because remote [`IndexPart`]'s can be from different version, which
     133              : /// might have less or more metadata depending if upgrading or rolling back an upgrade.
     134          132 : #[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
     135              : pub struct LayerFileMetadata {
     136              :     pub file_size: u64,
     137              : 
     138              :     #[serde(default = "Generation::none")]
     139              :     #[serde(skip_serializing_if = "Generation::is_none")]
     140              :     pub generation: Generation,
     141              : 
     142              :     #[serde(default = "ShardIndex::unsharded")]
     143              :     #[serde(skip_serializing_if = "ShardIndex::is_unsharded")]
     144              :     pub shard: ShardIndex,
     145              : }
     146              : 
     147              : impl LayerFileMetadata {
     148         2332 :     pub fn new(file_size: u64, generation: Generation, shard: ShardIndex) -> Self {
     149         2332 :         LayerFileMetadata {
     150         2332 :             file_size,
     151         2332 :             generation,
     152         2332 :             shard,
     153         2332 :         }
     154         2332 :     }
     155              : }
     156              : 
     157              : /// Limited history of earlier ancestors.
     158              : ///
     159              : /// A timeline can have more than 1 earlier ancestor, in the rare case that it was repeatedly
     160              : /// reparented by having an later timeline be detached from it's ancestor.
     161           32 : #[derive(Debug, PartialEq, Eq, Clone, Serialize, Deserialize, Default)]
     162              : pub(crate) struct Lineage {
     163              :     /// Has the `reparenting_history` been truncated to [`Lineage::REMEMBER_AT_MOST`].
     164              :     #[serde(skip_serializing_if = "is_false", default)]
     165              :     reparenting_history_truncated: bool,
     166              : 
     167              :     /// Earlier ancestors, truncated when [`Self::reparenting_history_truncated`]
     168              :     ///
     169              :     /// These are stored in case we want to support WAL based DR on the timeline. There can be many
     170              :     /// of these and at most one [`Self::original_ancestor`]. There cannot be more reparentings
     171              :     /// after [`Self::original_ancestor`] has been set.
     172              :     #[serde(skip_serializing_if = "Vec::is_empty", default)]
     173              :     reparenting_history: Vec<TimelineId>,
     174              : 
     175              :     /// The ancestor from which this timeline has been detached from and when.
     176              :     ///
     177              :     /// If you are adding support for detaching from a hierarchy, consider changing the ancestry
     178              :     /// into a `Vec<(TimelineId, Lsn)>` to be a path instead.
     179              :     // FIXME: this is insufficient even for path of two timelines for future wal recovery
     180              :     // purposes:
     181              :     //
     182              :     // assuming a "old main" which has received most of the WAL, and has a branch "new main",
     183              :     // starting a bit before "old main" last_record_lsn. the current version works fine,
     184              :     // because we will know to replay wal and branch at the recorded Lsn to do wal recovery.
     185              :     //
     186              :     // then assuming "new main" would similarly receive a branch right before its last_record_lsn,
     187              :     // "new new main". the current implementation would just store ("new main", ancestor_lsn, _)
     188              :     // here. however, we cannot recover from WAL using only that information, we would need the
     189              :     // whole ancestry here:
     190              :     //
     191              :     // ```json
     192              :     // [
     193              :     //   ["old main", ancestor_lsn("new main"), _],
     194              :     //   ["new main", ancestor_lsn("new new main"), _]
     195              :     // ]
     196              :     // ```
     197              :     #[serde(skip_serializing_if = "Option::is_none", default)]
     198              :     original_ancestor: Option<(TimelineId, Lsn, NaiveDateTime)>,
     199              : }
     200              : 
     201         5610 : fn is_false(b: &bool) -> bool {
     202         5610 :     !b
     203         5610 : }
     204              : 
     205              : impl Lineage {
     206              :     const REMEMBER_AT_MOST: usize = 100;
     207              : 
     208            0 :     pub(crate) fn record_previous_ancestor(&mut self, old_ancestor: &TimelineId) {
     209            0 :         if self.reparenting_history.last() == Some(old_ancestor) {
     210              :             // do not re-record it
     211            0 :             return;
     212            0 :         }
     213            0 : 
     214            0 :         let drop_oldest = self.reparenting_history.len() + 1 >= Self::REMEMBER_AT_MOST;
     215            0 : 
     216            0 :         self.reparenting_history_truncated |= drop_oldest;
     217            0 :         if drop_oldest {
     218            0 :             self.reparenting_history.remove(0);
     219            0 :         }
     220            0 :         self.reparenting_history.push(*old_ancestor);
     221            0 :     }
     222              : 
     223            0 :     pub(crate) fn record_detaching(&mut self, branchpoint: &(TimelineId, Lsn)) {
     224            0 :         assert!(self.original_ancestor.is_none());
     225              : 
     226            0 :         self.original_ancestor =
     227            0 :             Some((branchpoint.0, branchpoint.1, chrono::Utc::now().naive_utc()));
     228            0 :     }
     229              : 
     230              :     /// The queried lsn is most likely the basebackup lsn, and this answers question "is it allowed
     231              :     /// to start a read/write primary at this lsn".
     232              :     ///
     233              :     /// Returns true if the Lsn was previously our branch point.
     234            0 :     pub(crate) fn is_previous_ancestor_lsn(&self, lsn: Lsn) -> bool {
     235            0 :         self.original_ancestor
     236            0 :             .is_some_and(|(_, ancestor_lsn, _)| ancestor_lsn == lsn)
     237            0 :     }
     238              : 
     239            0 :     pub(crate) fn is_detached_from_original_ancestor(&self) -> bool {
     240            0 :         self.original_ancestor.is_some()
     241            0 :     }
     242              : 
     243            0 :     pub(crate) fn is_reparented(&self) -> bool {
     244            0 :         !self.reparenting_history.is_empty()
     245            0 :     }
     246              : }
     247              : 
     248              : #[cfg(test)]
     249              : mod tests {
     250              :     use super::*;
     251              :     use std::str::FromStr;
     252              :     use utils::id::TimelineId;
     253              : 
     254              :     #[test]
     255            2 :     fn v1_indexpart_is_parsed() {
     256            2 :         let example = r#"{
     257            2 :             "version":1,
     258            2 :             "timeline_layers":["000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9"],
     259            2 :             "layer_metadata":{
     260            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9": { "file_size": 25600000 },
     261            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51": { "file_size": 9007199254741001 }
     262            2 :             },
     263            2 :             "disk_consistent_lsn":"0/16960E8",
     264            2 :             "metadata_bytes":[113,11,159,210,0,54,0,4,0,0,0,0,1,105,96,232,1,0,0,0,0,1,105,96,112,0,0,0,0,0,0,0,0,0,0,0,0,0,1,105,96,112,0,0,0,0,1,105,96,112,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
     265            2 :         }"#;
     266            2 : 
     267            2 :         let expected = IndexPart {
     268            2 :             // note this is not verified, could be anything, but exists for humans debugging.. could be the git version instead?
     269            2 :             version: 1,
     270            2 :             layer_metadata: HashMap::from([
     271            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9".parse().unwrap(), LayerFileMetadata {
     272            2 :                     file_size: 25600000,
     273            2 :                     generation: Generation::none(),
     274            2 :                     shard: ShardIndex::unsharded()
     275            2 :                 }),
     276            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51".parse().unwrap(), LayerFileMetadata {
     277            2 :                     // serde_json should always parse this but this might be a double with jq for
     278            2 :                     // example.
     279            2 :                     file_size: 9007199254741001,
     280            2 :                     generation: Generation::none(),
     281            2 :                     shard: ShardIndex::unsharded()
     282            2 :                 })
     283            2 :             ]),
     284            2 :             disk_consistent_lsn: "0/16960E8".parse::<Lsn>().unwrap(),
     285            2 :             metadata: TimelineMetadata::from_bytes(&[113,11,159,210,0,54,0,4,0,0,0,0,1,105,96,232,1,0,0,0,0,1,105,96,112,0,0,0,0,0,0,0,0,0,0,0,0,0,1,105,96,112,0,0,0,0,1,105,96,112,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]).unwrap(),
     286            2 :             deleted_at: None,
     287            2 :             lineage: Lineage::default(),
     288            2 :             last_aux_file_policy: None,
     289            2 :         };
     290            2 : 
     291            2 :         let part = IndexPart::from_s3_bytes(example.as_bytes()).unwrap();
     292            2 :         assert_eq!(part, expected);
     293            2 :     }
     294              : 
     295              :     #[test]
     296            2 :     fn v1_indexpart_is_parsed_with_optional_missing_layers() {
     297            2 :         let example = r#"{
     298            2 :             "version":1,
     299            2 :             "timeline_layers":["000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9"],
     300            2 :             "missing_layers":["This shouldn't fail deserialization"],
     301            2 :             "layer_metadata":{
     302            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9": { "file_size": 25600000 },
     303            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51": { "file_size": 9007199254741001 }
     304            2 :             },
     305            2 :             "disk_consistent_lsn":"0/16960E8",
     306            2 :             "metadata_bytes":[113,11,159,210,0,54,0,4,0,0,0,0,1,105,96,232,1,0,0,0,0,1,105,96,112,0,0,0,0,0,0,0,0,0,0,0,0,0,1,105,96,112,0,0,0,0,1,105,96,112,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
     307            2 :         }"#;
     308            2 : 
     309            2 :         let expected = IndexPart {
     310            2 :             // note this is not verified, could be anything, but exists for humans debugging.. could be the git version instead?
     311            2 :             version: 1,
     312            2 :             layer_metadata: HashMap::from([
     313            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9".parse().unwrap(), LayerFileMetadata {
     314            2 :                     file_size: 25600000,
     315            2 :                     generation: Generation::none(),
     316            2 :                     shard: ShardIndex::unsharded()
     317            2 :                 }),
     318            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51".parse().unwrap(), LayerFileMetadata {
     319            2 :                     // serde_json should always parse this but this might be a double with jq for
     320            2 :                     // example.
     321            2 :                     file_size: 9007199254741001,
     322            2 :                     generation: Generation::none(),
     323            2 :                     shard: ShardIndex::unsharded()
     324            2 :                 })
     325            2 :             ]),
     326            2 :             disk_consistent_lsn: "0/16960E8".parse::<Lsn>().unwrap(),
     327            2 :             metadata: TimelineMetadata::from_bytes(&[113,11,159,210,0,54,0,4,0,0,0,0,1,105,96,232,1,0,0,0,0,1,105,96,112,0,0,0,0,0,0,0,0,0,0,0,0,0,1,105,96,112,0,0,0,0,1,105,96,112,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]).unwrap(),
     328            2 :             deleted_at: None,
     329            2 :             lineage: Lineage::default(),
     330            2 :             last_aux_file_policy: None,
     331            2 :         };
     332            2 : 
     333            2 :         let part = IndexPart::from_s3_bytes(example.as_bytes()).unwrap();
     334            2 :         assert_eq!(part, expected);
     335            2 :     }
     336              : 
     337              :     #[test]
     338            2 :     fn v2_indexpart_is_parsed_with_deleted_at() {
     339            2 :         let example = r#"{
     340            2 :             "version":2,
     341            2 :             "timeline_layers":["000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9"],
     342            2 :             "missing_layers":["This shouldn't fail deserialization"],
     343            2 :             "layer_metadata":{
     344            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9": { "file_size": 25600000 },
     345            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51": { "file_size": 9007199254741001 }
     346            2 :             },
     347            2 :             "disk_consistent_lsn":"0/16960E8",
     348            2 :             "metadata_bytes":[113,11,159,210,0,54,0,4,0,0,0,0,1,105,96,232,1,0,0,0,0,1,105,96,112,0,0,0,0,0,0,0,0,0,0,0,0,0,1,105,96,112,0,0,0,0,1,105,96,112,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
     349            2 :             "deleted_at": "2023-07-31T09:00:00.123"
     350            2 :         }"#;
     351            2 : 
     352            2 :         let expected = IndexPart {
     353            2 :             // note this is not verified, could be anything, but exists for humans debugging.. could be the git version instead?
     354            2 :             version: 2,
     355            2 :             layer_metadata: HashMap::from([
     356            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9".parse().unwrap(), LayerFileMetadata {
     357            2 :                     file_size: 25600000,
     358            2 :                     generation: Generation::none(),
     359            2 :                     shard: ShardIndex::unsharded()
     360            2 :                 }),
     361            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51".parse().unwrap(), LayerFileMetadata {
     362            2 :                     // serde_json should always parse this but this might be a double with jq for
     363            2 :                     // example.
     364            2 :                     file_size: 9007199254741001,
     365            2 :                     generation: Generation::none(),
     366            2 :                     shard: ShardIndex::unsharded()
     367            2 :                 })
     368            2 :             ]),
     369            2 :             disk_consistent_lsn: "0/16960E8".parse::<Lsn>().unwrap(),
     370            2 :             metadata: TimelineMetadata::from_bytes(&[113,11,159,210,0,54,0,4,0,0,0,0,1,105,96,232,1,0,0,0,0,1,105,96,112,0,0,0,0,0,0,0,0,0,0,0,0,0,1,105,96,112,0,0,0,0,1,105,96,112,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]).unwrap(),
     371            2 :             deleted_at: Some(parse_naive_datetime("2023-07-31T09:00:00.123000000")),
     372            2 :             lineage: Lineage::default(),
     373            2 :             last_aux_file_policy: None,
     374            2 :         };
     375            2 : 
     376            2 :         let part = IndexPart::from_s3_bytes(example.as_bytes()).unwrap();
     377            2 :         assert_eq!(part, expected);
     378            2 :     }
     379              : 
     380              :     #[test]
     381            2 :     fn empty_layers_are_parsed() {
     382            2 :         let empty_layers_json = r#"{
     383            2 :             "version":1,
     384            2 :             "timeline_layers":[],
     385            2 :             "layer_metadata":{},
     386            2 :             "disk_consistent_lsn":"0/2532648",
     387            2 :             "metadata_bytes":[136,151,49,208,0,70,0,4,0,0,0,0,2,83,38,72,1,0,0,0,0,2,83,38,32,1,87,198,240,135,97,119,45,125,38,29,155,161,140,141,255,210,0,0,0,0,2,83,38,72,0,0,0,0,1,73,240,192,0,0,0,0,1,73,240,192,0,0,0,15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
     388            2 :         }"#;
     389            2 : 
     390            2 :         let expected = IndexPart {
     391            2 :             version: 1,
     392            2 :             layer_metadata: HashMap::new(),
     393            2 :             disk_consistent_lsn: "0/2532648".parse::<Lsn>().unwrap(),
     394            2 :             metadata: TimelineMetadata::from_bytes(&[
     395            2 :                 136, 151, 49, 208, 0, 70, 0, 4, 0, 0, 0, 0, 2, 83, 38, 72, 1, 0, 0, 0, 0, 2, 83,
     396            2 :                 38, 32, 1, 87, 198, 240, 135, 97, 119, 45, 125, 38, 29, 155, 161, 140, 141, 255,
     397            2 :                 210, 0, 0, 0, 0, 2, 83, 38, 72, 0, 0, 0, 0, 1, 73, 240, 192, 0, 0, 0, 0, 1, 73,
     398            2 :                 240, 192, 0, 0, 0, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     399            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     400            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     401            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     402            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     403            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     404            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     405            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     406            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     407            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     408            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     409            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     410            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     411            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     412            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     413            2 :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     414            2 :                 0, 0,
     415            2 :             ])
     416            2 :             .unwrap(),
     417            2 :             deleted_at: None,
     418            2 :             lineage: Lineage::default(),
     419            2 :             last_aux_file_policy: None,
     420            2 :         };
     421            2 : 
     422            2 :         let empty_layers_parsed = IndexPart::from_s3_bytes(empty_layers_json.as_bytes()).unwrap();
     423            2 : 
     424            2 :         assert_eq!(empty_layers_parsed, expected);
     425            2 :     }
     426              : 
     427              :     #[test]
     428            2 :     fn v4_indexpart_is_parsed() {
     429            2 :         let example = r#"{
     430            2 :             "version":4,
     431            2 :             "layer_metadata":{
     432            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9": { "file_size": 25600000 },
     433            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51": { "file_size": 9007199254741001 }
     434            2 :             },
     435            2 :             "disk_consistent_lsn":"0/16960E8",
     436            2 :             "metadata_bytes":[113,11,159,210,0,54,0,4,0,0,0,0,1,105,96,232,1,0,0,0,0,1,105,96,112,0,0,0,0,0,0,0,0,0,0,0,0,0,1,105,96,112,0,0,0,0,1,105,96,112,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
     437            2 :             "deleted_at": "2023-07-31T09:00:00.123"
     438            2 :         }"#;
     439            2 : 
     440            2 :         let expected = IndexPart {
     441            2 :             version: 4,
     442            2 :             layer_metadata: HashMap::from([
     443            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9".parse().unwrap(), LayerFileMetadata {
     444            2 :                     file_size: 25600000,
     445            2 :                     generation: Generation::none(),
     446            2 :                     shard: ShardIndex::unsharded()
     447            2 :                 }),
     448            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51".parse().unwrap(), LayerFileMetadata {
     449            2 :                     // serde_json should always parse this but this might be a double with jq for
     450            2 :                     // example.
     451            2 :                     file_size: 9007199254741001,
     452            2 :                     generation: Generation::none(),
     453            2 :                     shard: ShardIndex::unsharded()
     454            2 :                 })
     455            2 :             ]),
     456            2 :             disk_consistent_lsn: "0/16960E8".parse::<Lsn>().unwrap(),
     457            2 :             metadata: TimelineMetadata::from_bytes(&[113,11,159,210,0,54,0,4,0,0,0,0,1,105,96,232,1,0,0,0,0,1,105,96,112,0,0,0,0,0,0,0,0,0,0,0,0,0,1,105,96,112,0,0,0,0,1,105,96,112,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]).unwrap(),
     458            2 :             deleted_at: Some(parse_naive_datetime("2023-07-31T09:00:00.123000000")),
     459            2 :             lineage: Lineage::default(),
     460            2 :             last_aux_file_policy: None,
     461            2 :         };
     462            2 : 
     463            2 :         let part = IndexPart::from_s3_bytes(example.as_bytes()).unwrap();
     464            2 :         assert_eq!(part, expected);
     465            2 :     }
     466              : 
     467              :     #[test]
     468            2 :     fn v5_indexpart_is_parsed() {
     469            2 :         let example = r#"{
     470            2 :             "version":5,
     471            2 :             "layer_metadata":{
     472            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000014EF420-00000000014EF499":{"file_size":23289856,"generation":1},
     473            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000014EF499-00000000015A7619":{"file_size":1015808,"generation":1}},
     474            2 :                 "disk_consistent_lsn":"0/15A7618",
     475            2 :                 "metadata_bytes":[226,88,25,241,0,46,0,4,0,0,0,0,1,90,118,24,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,78,244,32,0,0,0,0,1,78,244,32,0,0,0,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
     476            2 :                 "lineage":{
     477            2 :                     "original_ancestor":["e2bfd8c633d713d279e6fcd2bcc15b6d","0/15A7618","2024-05-07T18:52:36.322426563"],
     478            2 :                     "reparenting_history":["e1bfd8c633d713d279e6fcd2bcc15b6d"]
     479            2 :                 }
     480            2 :         }"#;
     481            2 : 
     482            2 :         let expected = IndexPart {
     483            2 :             version: 5,
     484            2 :             layer_metadata: HashMap::from([
     485            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000014EF420-00000000014EF499".parse().unwrap(), LayerFileMetadata {
     486            2 :                     file_size: 23289856,
     487            2 :                     generation: Generation::new(1),
     488            2 :                     shard: ShardIndex::unsharded(),
     489            2 :                 }),
     490            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000014EF499-00000000015A7619".parse().unwrap(), LayerFileMetadata {
     491            2 :                     file_size: 1015808,
     492            2 :                     generation: Generation::new(1),
     493            2 :                     shard: ShardIndex::unsharded(),
     494            2 :                 })
     495            2 :             ]),
     496            2 :             disk_consistent_lsn: Lsn::from_str("0/15A7618").unwrap(),
     497            2 :             metadata: TimelineMetadata::from_bytes(&[226,88,25,241,0,46,0,4,0,0,0,0,1,90,118,24,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,78,244,32,0,0,0,0,1,78,244,32,0,0,0,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]).unwrap(),
     498            2 :             deleted_at: None,
     499            2 :             lineage: Lineage {
     500            2 :                 reparenting_history_truncated: false,
     501            2 :                 reparenting_history: vec![TimelineId::from_str("e1bfd8c633d713d279e6fcd2bcc15b6d").unwrap()],
     502            2 :                 original_ancestor: Some((TimelineId::from_str("e2bfd8c633d713d279e6fcd2bcc15b6d").unwrap(), Lsn::from_str("0/15A7618").unwrap(), parse_naive_datetime("2024-05-07T18:52:36.322426563"))),
     503            2 :             },
     504            2 :             last_aux_file_policy: None,
     505            2 :         };
     506            2 : 
     507            2 :         let part = IndexPart::from_s3_bytes(example.as_bytes()).unwrap();
     508            2 :         assert_eq!(part, expected);
     509            2 :     }
     510              : 
     511              :     #[test]
     512            2 :     fn v6_indexpart_is_parsed() {
     513            2 :         let example = r#"{
     514            2 :             "version":6,
     515            2 :             "layer_metadata":{
     516            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9": { "file_size": 25600000 },
     517            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51": { "file_size": 9007199254741001 }
     518            2 :             },
     519            2 :             "disk_consistent_lsn":"0/16960E8",
     520            2 :             "metadata_bytes":[113,11,159,210,0,54,0,4,0,0,0,0,1,105,96,232,1,0,0,0,0,1,105,96,112,0,0,0,0,0,0,0,0,0,0,0,0,0,1,105,96,112,0,0,0,0,1,105,96,112,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
     521            2 :             "deleted_at": "2023-07-31T09:00:00.123",
     522            2 :             "lineage":{
     523            2 :                 "original_ancestor":["e2bfd8c633d713d279e6fcd2bcc15b6d","0/15A7618","2024-05-07T18:52:36.322426563"],
     524            2 :                 "reparenting_history":["e1bfd8c633d713d279e6fcd2bcc15b6d"]
     525            2 :             },
     526            2 :             "last_aux_file_policy": "V2"
     527            2 :         }"#;
     528            2 : 
     529            2 :         let expected = IndexPart {
     530            2 :             version: 6,
     531            2 :             layer_metadata: HashMap::from([
     532            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9".parse().unwrap(), LayerFileMetadata {
     533            2 :                     file_size: 25600000,
     534            2 :                     generation: Generation::none(),
     535            2 :                     shard: ShardIndex::unsharded()
     536            2 :                 }),
     537            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51".parse().unwrap(), LayerFileMetadata {
     538            2 :                     // serde_json should always parse this but this might be a double with jq for
     539            2 :                     // example.
     540            2 :                     file_size: 9007199254741001,
     541            2 :                     generation: Generation::none(),
     542            2 :                     shard: ShardIndex::unsharded()
     543            2 :                 })
     544            2 :             ]),
     545            2 :             disk_consistent_lsn: "0/16960E8".parse::<Lsn>().unwrap(),
     546            2 :             metadata: TimelineMetadata::from_bytes(&[113,11,159,210,0,54,0,4,0,0,0,0,1,105,96,232,1,0,0,0,0,1,105,96,112,0,0,0,0,0,0,0,0,0,0,0,0,0,1,105,96,112,0,0,0,0,1,105,96,112,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]).unwrap(),
     547            2 :             deleted_at: Some(parse_naive_datetime("2023-07-31T09:00:00.123000000")),
     548            2 :             lineage: Lineage {
     549            2 :                 reparenting_history_truncated: false,
     550            2 :                 reparenting_history: vec![TimelineId::from_str("e1bfd8c633d713d279e6fcd2bcc15b6d").unwrap()],
     551            2 :                 original_ancestor: Some((TimelineId::from_str("e2bfd8c633d713d279e6fcd2bcc15b6d").unwrap(), Lsn::from_str("0/15A7618").unwrap(), parse_naive_datetime("2024-05-07T18:52:36.322426563"))),
     552            2 :             },
     553            2 :             last_aux_file_policy: Some(AuxFilePolicy::V2),
     554            2 :         };
     555            2 : 
     556            2 :         let part = IndexPart::from_s3_bytes(example.as_bytes()).unwrap();
     557            2 :         assert_eq!(part, expected);
     558            2 :     }
     559              : 
     560              :     #[test]
     561            2 :     fn v7_indexpart_is_parsed() {
     562            2 :         let example = r#"{
     563            2 :             "version": 7,
     564            2 :             "layer_metadata":{
     565            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9": { "file_size": 25600000 },
     566            2 :                 "000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51": { "file_size": 9007199254741001 }
     567            2 :             },
     568            2 :             "disk_consistent_lsn":"0/16960E8",
     569            2 :             "metadata": {
     570            2 :                 "disk_consistent_lsn": "0/16960E8",
     571            2 :                 "prev_record_lsn": "0/1696070",
     572            2 :                 "ancestor_timeline": "e45a7f37d3ee2ff17dc14bf4f4e3f52e",
     573            2 :                 "ancestor_lsn": "0/0",
     574            2 :                 "latest_gc_cutoff_lsn": "0/1696070",
     575            2 :                 "initdb_lsn": "0/1696070",
     576            2 :                 "pg_version": 14
     577            2 :             },
     578            2 :             "deleted_at": "2023-07-31T09:00:00.123"
     579            2 :         }"#;
     580            2 : 
     581            2 :         let expected = IndexPart {
     582            2 :             version: 7,
     583            2 :             layer_metadata: HashMap::from([
     584            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__0000000001696070-00000000016960E9".parse().unwrap(), LayerFileMetadata {
     585            2 :                     file_size: 25600000,
     586            2 :                     generation: Generation::none(),
     587            2 :                     shard: ShardIndex::unsharded()
     588            2 :                 }),
     589            2 :                 ("000000000000000000000000000000000000-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF__00000000016B59D8-00000000016B5A51".parse().unwrap(), LayerFileMetadata {
     590            2 :                     file_size: 9007199254741001,
     591            2 :                     generation: Generation::none(),
     592            2 :                     shard: ShardIndex::unsharded()
     593            2 :                 })
     594            2 :             ]),
     595            2 :             disk_consistent_lsn: "0/16960E8".parse::<Lsn>().unwrap(),
     596            2 :             metadata: TimelineMetadata::new(
     597            2 :                 Lsn::from_str("0/16960E8").unwrap(),
     598            2 :                 Some(Lsn::from_str("0/1696070").unwrap()),
     599            2 :                 Some(TimelineId::from_str("e45a7f37d3ee2ff17dc14bf4f4e3f52e").unwrap()),
     600            2 :                 Lsn::INVALID,
     601            2 :                 Lsn::from_str("0/1696070").unwrap(),
     602            2 :                 Lsn::from_str("0/1696070").unwrap(),
     603            2 :                 14,
     604            2 :             ).with_recalculated_checksum().unwrap(),
     605            2 :             deleted_at: Some(parse_naive_datetime("2023-07-31T09:00:00.123000000")),
     606            2 :             lineage: Default::default(),
     607            2 :             last_aux_file_policy: Default::default(),
     608            2 :         };
     609            2 : 
     610            2 :         let part = IndexPart::from_s3_bytes(example.as_bytes()).unwrap();
     611            2 :         assert_eq!(part, expected);
     612            2 :     }
     613              : 
     614           12 :     fn parse_naive_datetime(s: &str) -> NaiveDateTime {
     615           12 :         chrono::NaiveDateTime::parse_from_str(s, "%Y-%m-%dT%H:%M:%S.%f").unwrap()
     616           12 :     }
     617              : }
        

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