Update

src/symbols/postgresql/database.rs

@@ -0,0 +1,53 @@
+use std::borrow::Cow;
+use std::error::Error;
+use std::fmt;
+
+use command_runner::CommandRunner;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
+
+pub struct PostgreSQLDatabase<'a, C: 'a + CommandRunner> {
+  name: Cow<'a, str>,
+  seed_file: Cow<'a, str>,
+  command_runner: &'a C
+}
+
+impl<'a, C: CommandRunner> PostgreSQLDatabase<'a, C> {
+  pub fn new(name: Cow<'a, str>, seed_file: Cow<'a, str>, command_runner: &'a C) -> Self {
+    PostgreSQLDatabase { name, seed_file, command_runner }
+  }
+
+  fn run_sql(&self, sql: &str) -> Result<String, Box<Error>> {
+    let b = try!(self.command_runner.get_output("su", &["-", "postgres", "-c", &format!("psql -t -c \"{}\"", sql)]));
+    Ok(try!(String::from_utf8(b)))
+  }
+}
+
+impl<'a, C: CommandRunner> fmt::Display for PostgreSQLDatabase<'a, C> {
+  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    write!(f, "PostgreSQL Database {}", self.name)
+  }
+}
+
+impl<'a, C: CommandRunner> Symbol for PostgreSQLDatabase<'a, C> {
+  fn target_reached(&self) -> Result<bool, Box<Error>> {
+    Ok(try!(self.run_sql(&format!("SELECT datname FROM pg_database WHERE datname LIKE '{}'", self.name))).trim() == self.name)
+  }
+
+  fn execute(&self) -> Result<(), Box<Error>> {
+    self.command_runner.run_successfully("su", &["-", "postgres", "-c", &format!("createuser {}", self.name)])?;
+    self.command_runner.run_successfully("su", &["-", "postgres", "-c", &format!("createdb -E UTF8 -T template0 -O {} {0}", self.name)])?;
+    self.command_runner.run_successfully("su", &["-", "postgres", "-c", &format!("psql '{}' < {}", self.name, self.seed_file)])
+  }
+
+  fn as_action<'b>(&'b self, runner: &'b SymbolRunner) -> Box<Action + 'b> {
+    Box::new(SymbolAction::new(runner, self))
+  }
+
+  fn into_action<'b>(self: Box<Self>, runner: &'b SymbolRunner) -> Box<Action + 'b> where Self: 'b {
+    Box::new(OwnedSymbolAction::new(runner, *self))
+  }
+}
+
+#[cfg(test)]
+mod test {
+}

src/symbols/postgresql/database_dump.rs

@@ -0,0 +1,55 @@
+use std::error::Error;
+use std::fmt;
+use std::str::FromStr;
+
+use command_runner::CommandRunner;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
+use storage::Storage;
+
+pub struct DatabaseDump<'a, N, C, S> where N: 'a + AsRef<str>, C: 'a + CommandRunner, S: Storage {
+  db_name: N,
+  storage: S,
+  command_runner: &'a C
+}
+
+impl<'a, N: AsRef<str>, C: CommandRunner, S: Storage> DatabaseDump<'a, N, C, S> {
+  pub fn new(db_name: N, storage: S, command_runner: &'a C) -> Self {
+    DatabaseDump { db_name, storage, command_runner }
+  }
+
+  fn run_sql(&self, sql: &str) -> Result<String, Box<Error>> {
+    let b = try!(self.command_runner.get_output("mariadb", &["--skip-column-names", "-B", "-e", sql]));
+    Ok(try!(String::from_utf8(b)))
+  }
+}
+
+impl<'a, N: AsRef<str>, C: CommandRunner, S: Storage> fmt::Display for DatabaseDump<'a, N, C, S> {
+  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    write!(f, "Dump MariaDB Database {}", self.db_name.as_ref())
+  }
+}
+
+impl<'a, N: AsRef<str>, C: CommandRunner, S: Storage> Symbol for DatabaseDump<'a, N, C, S> {
+  fn target_reached(&self) -> Result<bool, Box<Error>> {
+    let dump_date = try!(self.storage.recent_date());
+    let modified_date = try!(self.run_sql(&format!("select UNIX_TIMESTAMP(MAX(UPDATE_TIME)) from information_schema.tables WHERE table_schema = '{}'", self.db_name.as_ref())));
+    if modified_date.trim_right() == "NULL" { return Ok(false); }
+    Ok(try!(u64::from_str(modified_date.trim_right())) <= dump_date)
+  }
+
+  fn execute(&self) -> Result<(), Box<Error>> {
+    self.command_runner.run_successfully("sh", &["-c", &format!("mysqldump '{}' > {}", self.db_name.as_ref(), self.storage.write_filename())])
+  }
+
+  fn as_action<'b>(&'b self, runner: &'b SymbolRunner) -> Box<Action + 'b> {
+    Box::new(SymbolAction::new(runner, self))
+  }
+
+  fn into_action<'b>(self: Box<Self>, runner: &'b SymbolRunner) -> Box<Action + 'b> where Self: 'b {
+    Box::new(OwnedSymbolAction::new(runner, *self))
+  }
+}
+
+#[cfg(test)]
+mod test {
+}

src/symbols/postgresql/mod.rs

@@ -0,0 +1,5 @@
+mod database;
+mod database_dump;
+
+pub use self::database::PostgreSQLDatabase;
+//pub use self::database_dump::PostgreSQLDump;