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datastore status: factor out api type DataStoreStatusListItem

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And use the rust type instead of json::Value.
This commit is contained in:
Dietmar Maurer
2022-03-20 09:36:03 +01:00
parent 80ab05e40c
commit 762f7d15dc
2 changed files with 77 additions and 67 deletions
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102
src/api2/status.rs
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@ -1,7 +1,7 @@
//! Datastote status
use anyhow::{Error};
use serde_json::{json, Value};
use anyhow::Error;
use serde_json::Value;
use proxmox_schema::api;
use proxmox_router::{
@ -14,7 +14,7 @@ use proxmox_router::{
use proxmox_router::list_subdirs_api_method;
use pbs_api_types::{
Authid, DATASTORE_SCHEMA, RRDMode, RRDTimeFrame,
Authid, DataStoreStatusListItem, RRDMode, RRDTimeFrame,
PRIV_DATASTORE_AUDIT, PRIV_DATASTORE_BACKUP,
};
@ -29,47 +29,7 @@ use crate::rrd_cache::extract_rrd_data;
description: "Lists the Status of the Datastores.",
type: Array,
items: {
description: "Status of a Datastore",
type: Object,
properties: {
store: {
schema: DATASTORE_SCHEMA,
},
total: {
type: Integer,
description: "The Size of the underlying storage in bytes",
},
used: {
type: Integer,
description: "The used bytes of the underlying storage",
},
avail: {
type: Integer,
description: "The available bytes of the underlying storage",
},
history: {
type: Array,
optional: true,
description: "A list of usages of the past (last Month).",
items: {
type: Number,
description: "The usage of a time in the past. Either null or between 0.0 and 1.0.",
}
},
"estimated-full-date": {
type: Integer,
optional: true,
description: "Estimation of the UNIX epoch when the storage will be full.\
This is calculated via a simple Linear Regression (Least Squares)\
of RRD data of the last Month. Missing if there are not enough data points yet.\
If the estimate lies in the past, the usage is decreasing.",
},
"error": {
type: String,
optional: true,
description: "An error description, for example, when the datastore could not be looked up.",
},
},
type: DataStoreStatusListItem,
},
},
access: {
@ -81,7 +41,7 @@ pub fn datastore_status(
_param: Value,
_info: &ApiMethod,
rpcenv: &mut dyn RpcEnvironment,
) -> Result<Value, Error> {
) -> Result<Vec<DataStoreStatusListItem>, Error> {
let (config, _digest) = pbs_config::datastore::config()?;
@ -100,25 +60,33 @@ pub fn datastore_status(
let datastore = match DataStore::lookup_datastore(store) {
Ok(datastore) => datastore,
Err(err) => {
list.push(json!({
"store": store,
"total": -1,
"used": -1,
"avail": -1,
"error": err.to_string()
}));
list.push(DataStoreStatusListItem {
store: store.clone(),
total: 0,
used: 0,
avail: 0,
history: None,
history_start: None,
history_delta: None,
estimated_full_date: None,
error: Some(err.to_string()),
});
continue;
}
};
let status = crate::tools::disks::disk_usage(&datastore.base_path())?;
let mut entry = json!({
"store": store,
"total": status.total,
"used": status.used,
"avail": status.avail,
"gc-status": datastore.last_gc_status(),
});
let mut entry = DataStoreStatusListItem {
store: store.clone(),
total: status.total,
used: status.used,
avail: status.avail,
history: None,
history_start: None,
history_delta: None,
estimated_full_date: None,
error: None,
};
let rrd_dir = format!("datastore/{}", store);
@ -149,23 +117,23 @@ pub fn datastore_status(
time_list.push(start + (idx as u64)*reso);
let usage = used/total;
usage_list.push(usage);
history.push(json!(usage));
history.push(Some(usage));
},
_ => {
history.push(json!(null))
history.push(None)
}
}
}
entry["history-start"] = start.into();
entry["history-delta"] = reso.into();
entry["history"] = history.into();
entry.history_start = Some(start);
entry.history_delta = Some(reso);
entry.history = Some(history);
// we skip the calculation for datastores with not enough data
if usage_list.len() >= 7 {
entry["estimated-full-date"] = match linear_regression(&time_list, &usage_list) {
Some((a, b)) if b != 0.0 => Value::from(((1.0 - a) / b).floor() as u64),
_ => Value::from(0),
entry.estimated_full_date = match linear_regression(&time_list, &usage_list) {
Some((a, b)) if b != 0.0 => Some(((1.0 - a) / b).floor() as i64),
_ => None,
};
}
}