Line data    Source code

       1              : use serde::{Deserialize, Serialize};
       2              : use utils::seqwait::MonotonicCounter;
       3              : 
       4              : mod auth;
       5              : mod compute_hook;
       6              : pub mod http;
       7              : pub mod metrics;
       8              : mod node;
       9              : pub mod persistence;
      10              : mod reconciler;
      11              : mod scheduler;
      12              : mod schema;
      13              : pub mod service;
      14              : mod tenant_state;
      15              : 
      16            0 : #[derive(Clone, Serialize, Deserialize, Debug)]
      17              : enum PlacementPolicy {
      18              :     /// Cheapest way to attach a tenant: just one pageserver, no secondary
      19              :     Single,
      20              :     /// Production-ready way to attach a tenant: one attached pageserver and
      21              :     /// some number of secondaries.
      22              :     Double(usize),
      23              :     /// Do not attach to any pageservers
      24              :     Detached,
      25              : }
      26              : 
      27            0 : #[derive(Ord, PartialOrd, Eq, PartialEq, Copy, Clone, Serialize)]
      28              : struct Sequence(u64);
      29              : 
      30              : impl Sequence {
      31            0 :     fn initial() -> Self {
      32            0 :         Self(0)
      33            0 :     }
      34              : }
      35              : 
      36              : impl std::fmt::Display for Sequence {
      37            0 :     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
      38            0 :         write!(f, "{}", self.0)
      39            0 :     }
      40              : }
      41              : 
      42              : impl std::fmt::Debug for Sequence {
      43            0 :     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
      44            0 :         write!(f, "{}", self.0)
      45            0 :     }
      46              : }
      47              : 
      48              : impl MonotonicCounter<Sequence> for Sequence {
      49            0 :     fn cnt_advance(&mut self, v: Sequence) {
      50            0 :         assert!(*self <= v);
      51            0 :         *self = v;
      52            0 :     }
      53            0 :     fn cnt_value(&self) -> Sequence {
      54            0 :         *self
      55            0 :     }
      56              : }
      57              : 
      58              : impl Sequence {
      59            0 :     fn next(&self) -> Sequence {
      60            0 :         Sequence(self.0 + 1)
      61            0 :     }
      62              : }
      63              : 
      64              : impl Default for PlacementPolicy {
      65            0 :     fn default() -> Self {
      66            0 :         PlacementPolicy::Double(1)
      67            0 :     }
      68              : }