use std::sync::Arc;
use hyper::{Body, Response, StatusCode};
use serde::Serialize;
use garage_util::data::*;
use garage_util::error::Error as GarageError;
use garage_rpc::ring::Ring;
use garage_table::util::*;
use garage_model::garage::Garage;
use garage_model::k2v::counter_table::{BYTES, CONFLICTS, ENTRIES, VALUES};
use crate::k2v::error::*;
use crate::k2v::range::read_range;
pub async fn handle_read_index(
garage: Arc<Garage>,
bucket_id: Uuid,
prefix: Option<String>,
start: Option<String>,
end: Option<String>,
limit: Option<u64>,
reverse: Option<bool>,
) -> Result<Response<Body>, Error> {
let reverse = reverse.unwrap_or(false);
let ring: Arc<Ring> = garage.system.ring.borrow().clone();
let (partition_keys, more, next_start) = read_range(
&garage.k2v.counter_table.table,
&bucket_id,
&prefix,
&start,
&end,
limit,
Some((DeletedFilter::NotDeleted, ring.layout.node_id_vec.clone())),
EnumerationOrder::from_reverse(reverse),
)
.await?;
let s_entries = ENTRIES.to_string();
let s_conflicts = CONFLICTS.to_string();
let s_values = VALUES.to_string();
let s_bytes = BYTES.to_string();
let resp = ReadIndexResponse {
prefix,
start,
end,
limit,
reverse,
partition_keys: partition_keys
.into_iter()
.map(|part| {
let vals = part.filtered_values(&ring);
ReadIndexResponseEntry {
pk: part.sk,
entries: *vals.get(&s_entries).unwrap_or(&0),
conflicts: *vals.get(&s_conflicts).unwrap_or(&0),
values: *vals.get(&s_values).unwrap_or(&0),
bytes: *vals.get(&s_bytes).unwrap_or(&0),
}
})
.collect::<Vec<_>>(),
more,
next_start,
};
let resp_json = serde_json::to_string_pretty(&resp).map_err(GarageError::from)?;
Ok(Response::builder()
.status(StatusCode::OK)
.body(Body::from(resp_json))?)
}
#[derive(Serialize)]
struct ReadIndexResponse {
prefix: Option<String>,
start: Option<String>,
end: Option<String>,
limit: Option<u64>,
reverse: bool,
#[serde(rename = "partitionKeys")]
partition_keys: Vec<ReadIndexResponseEntry>,
more: bool,
#[serde(rename = "nextStart")]
next_start: Option<String>,
}
#[derive(Serialize)]
struct ReadIndexResponseEntry {
pk: String,
entries: i64,
conflicts: i64,
values: i64,
bytes: i64,
}
