proxmox-backup/pbs-api-types/src/maintenance.rs

78 lines
2.1 KiB
Rust
Raw Normal View History

use anyhow::{bail, Error};
use serde::{Deserialize, Serialize};
use std::borrow::Cow;
use proxmox_schema::{api, const_regex, ApiStringFormat, Schema, StringSchema};
const_regex! {
pub MAINTENANCE_MESSAGE_REGEX = r"^[[:^cntrl:]]*$";
}
pub const MAINTENANCE_MESSAGE_FORMAT: ApiStringFormat =
ApiStringFormat::Pattern(&MAINTENANCE_MESSAGE_REGEX);
pub const MAINTENANCE_MESSAGE_SCHEMA: Schema =
StringSchema::new("Message describing the reason for the maintenance.")
.format(&MAINTENANCE_MESSAGE_FORMAT)
.max_length(64)
.schema();
#[derive(Clone, Copy, Debug)]
/// Operation requirements, used when checking for maintenance mode.
pub enum Operation {
Read,
Write,
}
#[api]
#[derive(Deserialize, Serialize, PartialEq)]
#[serde(rename_all = "kebab-case")]
/// Maintenance type.
pub enum MaintenanceType {
/// Only read operations are allowed on the datastore.
ReadOnly,
/// Neither read nor write operations are allowed on the datastore.
Offline,
}
#[api(
properties: {
type: {
type: MaintenanceType,
},
message: {
optional: true,
schema: MAINTENANCE_MESSAGE_SCHEMA,
}
},
default_key: "type",
)]
#[derive(Deserialize, Serialize)]
/// Maintenance mode
pub struct MaintenanceMode {
/// Type of maintenance ("read-only" or "offline").
#[serde(rename = "type")]
ty: MaintenanceType,
/// Reason for maintenance.
#[serde(skip_serializing_if = "Option::is_none")]
message: Option<String>,
}
impl MaintenanceMode {
pub fn check(&self, operation: Option<Operation>) -> Result<(), Error> {
let message = percent_encoding::percent_decode_str(self.message.as_deref().unwrap_or(""))
.decode_utf8()
.unwrap_or(Cow::Borrowed(""));
if self.ty == MaintenanceType::Offline {
bail!("offline maintenance mode: {}", message);
} else if self.ty == MaintenanceType::ReadOnly {
if let Some(Operation::Write) = operation {
bail!("read-only maintenance mode: {}", message);
}
}
Ok(())
}
}