111 lines
2.8 KiB
Rust
111 lines
2.8 KiB
Rust
use core::fmt;
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use err::thiserror;
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use err::ThisError;
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use serde::Deserialize;
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use serde::Serialize;
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use std::str::FromStr;
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use std::time::Duration;
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#[derive(Debug, Clone, Serialize, Deserialize)]
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pub enum RetentionTime {
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Short,
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Medium,
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Long,
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}
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impl RetentionTime {
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pub fn debug_tag(&self) -> &'static str {
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use RetentionTime::*;
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match self {
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Short => "ST",
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Medium => "MT",
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Long => "LT",
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}
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}
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pub fn table_prefix(&self) -> &'static str {
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use RetentionTime::*;
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match self {
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Short => "st_",
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Medium => "mt_",
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Long => "lt_",
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}
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}
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pub fn ttl_events_d0(&self) -> Duration {
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let day = 60 * 60 * 24;
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let margin_max = Duration::from_secs(day * 2);
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let ttl = self.ttl_ts_msp();
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let margin = ttl / 10;
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let margin = if margin >= margin_max { margin_max } else { margin };
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ttl + margin
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}
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pub fn ttl_events_d1(&self) -> Duration {
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// TTL now depends only on RetentionTime, not on data type or shape.
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self.ttl_events_d0()
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}
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pub fn ttl_ts_msp(&self) -> Duration {
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let day = 60 * 60 * 24;
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match self {
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RetentionTime::Short => Duration::from_secs(day * 7),
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RetentionTime::Medium => Duration::from_secs(day * 31 * 13),
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RetentionTime::Long => Duration::from_secs(day * 31 * 12 * 17),
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}
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}
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pub fn ttl_binned(&self) -> Duration {
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// Current choice is to keep the TTL the same as for events
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self.ttl_events_d0()
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}
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pub fn ttl_channel_status(&self) -> Duration {
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// Current choice is to keep the TTL the same as for events
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self.ttl_events_d0()
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}
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}
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impl fmt::Display for RetentionTime {
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fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
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let s = match self {
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RetentionTime::Short => "short",
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RetentionTime::Medium => "medium",
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RetentionTime::Long => "long",
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};
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fmt.write_str(s)
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}
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}
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#[derive(Debug, ThisError)]
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#[cstm(name = "TTL")]
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pub enum Error {
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Parse,
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}
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// err::err_dbg_dis!(Error, "ttl::Error::");
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impl FromStr for RetentionTime {
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type Err = Error;
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fn from_str(s: &str) -> Result<Self, Self::Err> {
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let ret = match s {
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"short" => Self::Short,
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"medium" => Self::Medium,
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"long" => Self::Long,
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_ => return Err(Error::Parse),
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};
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Ok(ret)
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}
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}
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// impl ToString for RetentionTime {
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// fn to_string(&self) -> String {
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// match self {
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// RetentionTime::Short => "short".into(),
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// RetentionTime::Medium => "medium".into(),
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// RetentionTime::Long => "long".into(),
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// }
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// }
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// }
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