Some small fixes

Cargo.toml

@@ -10,7 +10,8 @@ users = "0.10.0"
 regex = "1.0.1"
 futures = "0.3"
 async-trait = "0.1"
-tokio = { version = "0.2", features = ["process", "io-util", "rt-core", "macros"] }
+tokio = { version = "0.2", features = ["process", "io-util", "rt-core", "macros", "sync"] }
+once_cell = "1.4"
 
 [dev-dependencies]
 tempdir = "0.3"

src/loggers.rs

@@ -100,7 +100,7 @@ impl<'a, L: Logger> Logger for FilteringLogger<'a, L> {
 
 #[derive(Debug, Default)]
 pub struct StoringLogger {
-  log: RefCell<Vec<Entry<String>>>,
+  log: RefCell<(bool, Vec<Entry<String>>)>,
 }
 
 impl StoringLogger {
@@ -109,21 +109,28 @@ impl StoringLogger {
   }
 
   pub fn release(self) -> Vec<Entry<String>> {
-    self.log.into_inner()
+    self.log.into_inner().1
   }
 }
 
 impl Logger for StoringLogger {
   fn write<S: AsRef<str> + Into<String>>(&self, level: Level, line: S) {
     let mut log = self.log.borrow_mut();
-    let entry = log
+    let entry = if log.0 {
+      log
+        .1
         .pop()
         .map(|e| Entry(min(e.0, level), e.1 + line.as_ref()))
+    } else {
+      None
+    }
     .unwrap_or_else(|| Entry(level, line.into()));
-    log.push(entry);
+    log.1.push(entry);
   }
   fn writeln<S: AsRef<str> + Into<String>>(&self, level: Level, line: S) {
-    self.log.borrow_mut().push(Entry(level, line.into()));
+    let mut log = self.log.borrow_mut();
+    log.0 = false;
+    log.1.push(Entry(level, line.into()));
   }
 }
 

src/setup/core.rs

@@ -137,7 +137,7 @@ where
     let resource = resource.as_ref();
     let logger = StoringLogger::new();
     logger.write(4, format!("Adding {:?} ... ", resource));
-    let result = {
+    let result = async {
       logger.trace(format!(" (force_run is {})", force_run));
       let (location, location_prereqs) = L::locate(resource);
       logger.trace(format!("Adding location prereqs for {:?}", resource));
@@ -162,7 +162,8 @@ where
         )
         .await?;
       Ok((location, did_run))
-    };
+    }
+    .await;
     logger.write(4, "done.");
     let max_level = if result.is_err() { 5 } else { 3 };
     if parent_logger.put(logger.release().into_iter().filter(|e| e.0 <= max_level)) == 0 {
@@ -181,9 +182,9 @@ impl<SR: SymbolRunner, L, B> SymbolRunner for RegularSetupCore<SR, L, B> {
     force: bool,
   ) -> Result<bool, Box<dyn Error>> {
     let logger = StoringLogger::new();
-    logger.debug(format!("Directly running {:?} ...", symbol));
+    logger.write(4, format!("Directly running {:?} ...", symbol));
     let result = self.symbol_runner.run_symbol(symbol, &logger, force).await;
-    logger.debug("done.");
+    logger.write(4, "done.");
     let max_level = if result.is_err() { 5 } else { 3 };
     parent_logger.put(logger.release().into_iter().filter(|e| e.0 <= max_level));
     result

src/setup/setup.rs

@@ -64,11 +64,7 @@ impl<
     self.0.resources.borrow_mut()
   }
 
-  pub async fn add_force<R: AddableResource>(
-    &self,
-    resource: R,
-    force_run: bool,
-  ) -> AddResult<R>
+  pub async fn add_force<R: AddableResource>(&self, resource: R, force_run: bool) -> AddResult<R>
   where
     Rs: FromResource<R>,
     As: FromArtifact<R> + Clone,
@@ -126,7 +122,11 @@ impl<
     self.add_force(resource, false).await
   }
 
-  pub async fn run_symbol<S: Runnable>(&self, symbol: S, force: bool) -> Result<bool, Box<dyn Error>>
+  pub async fn run_symbol<S: Runnable>(
+    &self,
+    symbol: S,
+    force: bool,
+  ) -> Result<bool, Box<dyn Error>>
   where
     RegularSetupCore<SR, L, B>: SymbolRunner,
   {

src/symbols/npm.rs

@@ -13,7 +13,7 @@ pub struct Install<'a, T: AsRef<Path>, C: CommandRunner> {
 
 impl<'a, T: AsRef<Path>, C: CommandRunner> Install<'a, T, C> {
   pub fn new(target: T, command_runner: &'a C) -> Self {
-    Install {
+    Self {
       target,
       command_runner,
     }
@@ -36,9 +36,9 @@ impl<T: AsRef<Path>, C: CommandRunner> Symbol for Install<'_, T, C> {
     if !self.target.as_ref().exists() {
       return Ok(false);
     }
-    let output = self
+    let result = self
       .command_runner
-      .get_output(
+      .run_with_args(
         "sh",
         args![
           "-c",
@@ -46,7 +46,12 @@ impl<T: AsRef<Path>, C: CommandRunner> Symbol for Install<'_, T, C> {
         ],
       )
       .await?;
-    Ok(!String::from_utf8(output).unwrap().contains("(empty)"))
+    Ok(
+      result.status.success()
+        && !String::from_utf8(result.stdout)
+          .unwrap()
+          .contains("(empty)"),
+    )
   }
 
   async fn execute(&self) -> Result<(), Box<dyn Error>> {

src/symbols/user.rs

@@ -1,7 +1,12 @@
 use crate::command_runner::CommandRunner;
 use crate::symbols::Symbol;
 use async_trait::async_trait;
+use once_cell::sync::Lazy;
 use std::error::Error;
+use tokio::sync::Semaphore;
+
+pub type Wait = Lazy<Semaphore>;
+static WAIT: Wait = Lazy::new(|| Semaphore::new(1));
 
 #[derive(Debug)]
 pub struct User<U, C> {
@@ -33,6 +38,9 @@ impl<U: AsRef<str>, C: CommandRunner> Symbol for User<U, C> {
   }
 
   async fn execute(&self) -> Result<(), Box<dyn Error>> {
+    // adduser is not reentrant because finding the next uid
+    // and creating the account is not an atomic operation
+    let wait = WAIT.acquire().await;
     self
       .command_runner
       .run_successfully(

src/templates/systemd.rs

@@ -36,7 +36,7 @@ pub fn nodejs_service<N: AsRef<Path>, S: AsRef<Path>>(
     &format!(
       "Environment=NODE_ENV=production
 Environment=PORT={0}
-ExecStartPost=/bin/sh -c 'sleep 1 && chmod 666 {0}'
+ExecStartPost=/bin/sh -c 'for i in 1 2 3 4 5 6 7 8 9 10; do sleep 0.5; chmod 666 {0} && break; done'
 #RuntimeDirectory=service
 #RuntimeDirectoryMode=766",
       socket_path.as_ref().to_str().unwrap()