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61 lines
1.6 KiB
61 lines
1.6 KiB
use crate::command_runner::CommandRunner;
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use crate::storage::Storage;
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use crate::symbols::Symbol;
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use async_trait::async_trait;
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use std::error::Error;
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use std::str::FromStr;
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#[derive(Debug)]
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pub struct Dump<'a, N, C, S> {
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db_name: N,
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storage: S,
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command_runner: &'a C,
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}
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impl<'a, N, C: CommandRunner, S> Dump<'a, N, C, S> {
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pub const fn new(db_name: N, storage: S, command_runner: &'a C) -> Self {
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Self {
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db_name,
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storage,
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command_runner,
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}
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}
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async fn run_sql(&self, sql: &str) -> Result<String, Box<dyn Error>> {
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let b = self
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.command_runner
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.get_output("mariadb", args!["--skip-column-names", "-B", "-e", sql])
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.await?;
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Ok(String::from_utf8(b)?)
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}
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}
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#[async_trait(?Send)]
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impl<N: AsRef<str>, C: CommandRunner, S: Storage> Symbol for Dump<'_, N, C, S> {
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async fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
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let dump_date = self.storage.recent_date()?;
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let output = self.run_sql(&format!("select UNIX_TIMESTAMP(MAX(UPDATE_TIME)) from information_schema.tables WHERE table_schema = '{}'", self.db_name.as_ref())).await?;
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let modified_date = output.trim_end();
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Ok(modified_date == "NULL" || u64::from_str(modified_date)? <= dump_date)
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}
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async fn execute(&self) -> Result<(), Box<dyn Error>> {
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self
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.command_runner
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.run_successfully(
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"sh",
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args![
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"-c",
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format!(
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"mysqldump '{}' > {}",
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self.db_name.as_ref(),
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self.storage.write_filename().to_str().unwrap()
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),
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],
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)
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.await
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}
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}
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#[cfg(test)]
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mod test {}
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