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use std::collections::HashMap;
use std::fmt::Write;
use std::sync::Arc;
use format_table::format_table_to_string;
use garage_util::data::*;
use garage_util::error::Error as GarageError;
use garage_table::replication::*;
use garage_table::*;
use garage_rpc::layout::PARTITION_BITS;
use garage_model::garage::Garage;
use crate::api::*;
use crate::error::Error;
use crate::{Admin, RequestHandler};
impl RequestHandler for LocalCreateMetadataSnapshotRequest {
type Response = LocalCreateMetadataSnapshotResponse;
async fn handle(
self,
garage: &Arc<Garage>,
_admin: &Admin,
) -> Result<LocalCreateMetadataSnapshotResponse, Error> {
garage_model::snapshot::async_snapshot_metadata(garage).await?;
Ok(LocalCreateMetadataSnapshotResponse)
}
}
impl RequestHandler for LocalGetNodeStatisticsRequest {
type Response = LocalGetNodeStatisticsResponse;
// FIXME: return this as a JSON struct instead of text
async fn handle(
self,
garage: &Arc<Garage>,
_admin: &Admin,
) -> Result<LocalGetNodeStatisticsResponse, Error> {
let mut ret = String::new();
writeln!(
&mut ret,
"Garage version: {} [features: {}]\nRust compiler version: {}",
garage_util::version::garage_version(),
garage_util::version::garage_features()
.map(|list| list.join(", "))
.unwrap_or_else(|| "(unknown)".into()),
garage_util::version::rust_version(),
)
.unwrap();
writeln!(&mut ret, "\nDatabase engine: {}", garage.db.engine()).unwrap();
// Gather table statistics
let mut table = vec![" Table\tItems\tMklItems\tMklTodo\tGcTodo".into()];
table.push(gather_table_stats(&garage.bucket_table)?);
table.push(gather_table_stats(&garage.key_table)?);
table.push(gather_table_stats(&garage.object_table)?);
table.push(gather_table_stats(&garage.version_table)?);
table.push(gather_table_stats(&garage.block_ref_table)?);
write!(
&mut ret,
"\nTable stats:\n{}",
format_table_to_string(table)
)
.unwrap();
// Gather block manager statistics
writeln!(&mut ret, "\nBlock manager stats:").unwrap();
let rc_len = garage.block_manager.rc_len()?.to_string();
writeln!(
&mut ret,
" number of RC entries (~= number of blocks): {}",
rc_len
)
.unwrap();
writeln!(
&mut ret,
" resync queue length: {}",
garage.block_manager.resync.queue_len()?
)
.unwrap();
writeln!(
&mut ret,
" blocks with resync errors: {}",
garage.block_manager.resync.errors_len()?
)
.unwrap();
Ok(LocalGetNodeStatisticsResponse { freeform: ret })
}
}
impl RequestHandler for GetClusterStatisticsRequest {
type Response = GetClusterStatisticsResponse;
// FIXME: return this as a JSON struct instead of text
async fn handle(
self,
garage: &Arc<Garage>,
_admin: &Admin,
) -> Result<GetClusterStatisticsResponse, Error> {
let mut ret = String::new();
// Gather storage node and free space statistics for current nodes
let layout = &garage.system.cluster_layout();
let mut node_partition_count = HashMap::<Uuid, u64>::new();
for short_id in layout.current().ring_assignment_data.iter() {
let id = layout.current().node_id_vec[*short_id as usize];
*node_partition_count.entry(id).or_default() += 1;
}
let node_info = garage
.system
.get_known_nodes()
.into_iter()
.map(|n| (n.id, n))
.collect::<HashMap<_, _>>();
let mut table = vec![" ID\tHostname\tZone\tCapacity\tPart.\tDataAvail\tMetaAvail".into()];
for (id, parts) in node_partition_count.iter() {
let info = node_info.get(id);
let status = info.map(|x| &x.status);
let role = layout.current().roles.get(id).and_then(|x| x.0.as_ref());
let hostname = status.and_then(|x| x.hostname.as_deref()).unwrap_or("?");
let zone = role.map(|x| x.zone.as_str()).unwrap_or("?");
let capacity = role
.map(|x| x.capacity_string())
.unwrap_or_else(|| "?".into());
let avail_str = |x| match x {
Some((avail, total)) => {
let pct = (avail as f64) / (total as f64) * 100.;
let avail = bytesize::ByteSize::b(avail);
let total = bytesize::ByteSize::b(total);
format!("{}/{} ({:.1}%)", avail, total, pct)
}
None => "?".into(),
};
let data_avail = avail_str(status.and_then(|x| x.data_disk_avail));
let meta_avail = avail_str(status.and_then(|x| x.meta_disk_avail));
table.push(format!(
" {:?}\t{}\t{}\t{}\t{}\t{}\t{}",
id, hostname, zone, capacity, parts, data_avail, meta_avail
));
}
write!(
&mut ret,
"Storage nodes:\n{}",
format_table_to_string(table)
)
.unwrap();
let meta_part_avail = node_partition_count
.iter()
.filter_map(|(id, parts)| {
node_info
.get(id)
.and_then(|x| x.status.meta_disk_avail)
.map(|c| c.0 / *parts)
})
.collect::<Vec<_>>();
let data_part_avail = node_partition_count
.iter()
.filter_map(|(id, parts)| {
node_info
.get(id)
.and_then(|x| x.status.data_disk_avail)
.map(|c| c.0 / *parts)
})
.collect::<Vec<_>>();
if !meta_part_avail.is_empty() && !data_part_avail.is_empty() {
let meta_avail =
bytesize::ByteSize(meta_part_avail.iter().min().unwrap() * (1 << PARTITION_BITS));
let data_avail =
bytesize::ByteSize(data_part_avail.iter().min().unwrap() * (1 << PARTITION_BITS));
writeln!(
&mut ret,
"\nEstimated available storage space cluster-wide (might be lower in practice):"
)
.unwrap();
if meta_part_avail.len() < node_partition_count.len()
|| data_part_avail.len() < node_partition_count.len()
{
writeln!(&mut ret, " data: < {}", data_avail).unwrap();
writeln!(&mut ret, " metadata: < {}", meta_avail).unwrap();
writeln!(&mut ret, "A precise estimate could not be given as information is missing for some storage nodes.").unwrap();
} else {
writeln!(&mut ret, " data: {}", data_avail).unwrap();
writeln!(&mut ret, " metadata: {}", meta_avail).unwrap();
}
}
Ok(GetClusterStatisticsResponse { freeform: ret })
}
}
fn gather_table_stats<F, R>(t: &Arc<Table<F, R>>) -> Result<String, Error>
where
F: TableSchema + 'static,
R: TableReplication + 'static,
{
let data_len = t.data.store.len().map_err(GarageError::from)?.to_string();
let mkl_len = t.merkle_updater.merkle_tree_len()?.to_string();
Ok(format!(
" {}\t{}\t{}\t{}\t{}",
F::TABLE_NAME,
data_len,
mkl_len,
t.merkle_updater.todo_len()?,
t.data.gc_todo_len()?
))
}
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