v0.2.1

.github/workflows/cargo-build.yml

@@ -0,0 +1,30 @@
+name: Cargo build & test
+
+on:
+  push:
+    paths-ignore:
+      - '.github/**'
+      - '*.md'
+      - '.*'
+      - '*.lock'
+      - '.LICENSE'
+      - 'examples'
+      - 'test'
+    branches: [ "main", "develop" ]
+#  pull_request:
+#    branches: [ "main" ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Build
+      run: cargo build --verbose
+    - name: Run tests
+      run: cargo test --verbose

Cargo.toml

@@ -1,13 +1,13 @@
 [package]
 name = "docker-autoheal"
-version = "0.1.0"
+version = "0.2.1"
 authors = ["Travis M Knight <[email protected]>"]
 license = "MIT"
 description = "Monitor and restart unhealthy docker containers"
 readme = "README.md"
 homepage = "https://github.com/tmknight/docker-autoheal"
 edition = "2021"
-rust-version = "1.75.0"
+rust-version = "1.74.1"
 
 [dependencies]
 bollard = "*"

README.md

@@ -9,16 +9,18 @@ The `docker-autoheal` binary may be executed via a native OS or via a Docker con
 | Variable                          | Default  | Description                                                                                                                       |
 |:---------------------------------:|:--------:|:---------------------------------------------------------------------------------------------------------------------------------:|
 | **AUTOHEAL_CONTAINER_LABEL**      | autoheal |This is the label (set to `true`) that `docker-autoheal` will monitor and remediate - or set to `all` to simply monitor all containers on the host|
-| **AUTOHEAL_DEFAULT_STOP_TIMEOUT** | 10       | Docker waits `n` seconds for a container to stop before killing it during restarts (overridable via label; see below)           |
+| **AUTOHEAL_DEFAULT_STOP_TIMEOUT** | 10       | Docker waits `n` seconds for a container to stop before killing it during restarts <!-- (overridable via label; see below) -->           |
 | **AUTOHEAL_INTERVAL**             | 5        | Check container health every`n` seconds**                                                                                       |
 | **AUTOHEAL_START_PERIOD**         | 0        | Wait `n` seconds before first health check                                                                                      |
 <!-- |WEBHOOK_URL                      |            |Post messages to the webhook following actions on unhealthy container                                                          | -->
 
+<!--
 ### Optional Container Labels
 
 | Label                             | Value    | Description                                                                                                                       |
 |:---------------------------------:|:--------:|:---------------------------------------------------------------------------------------------------------------------------------:|
 | **autoheal.stop.timeout**         | 20       | Per container override of the stop timeout (in seconds) during restart                                                            |
+-->
 
 ## How to use
 

src/main.rs

@@ -5,13 +5,15 @@ use std::collections::HashMap;
 use std::io::{stdout, Write};
 use std::time::Duration;
 
+// Logging
 async fn log_message(msg: &str) {
     let date = Local::now().format("%Y-%m-%d %H:%M:%S").to_string();
     let mut lock = stdout().lock();
     writeln!(lock, "{} {}", date, msg).unwrap();
 }
 
-async fn get_env(key: &str, default: &str) -> String {
+// Return environment variable
+fn get_env(key: &str, default: &str) -> String {
     match std::env::var(key) {
         Ok(val) => return val,
         Err(e) => return default.to_string(),
@@ -21,22 +23,21 @@ async fn get_env(key: &str, default: &str) -> String {
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Autoheal variables
-    let autoheal_connection_type = get_env("AUTOHEAL_CONNECTION_TYPE", "local").await;
-    let autoheal_container_label = get_env("AUTOHEAL_CONTAINER_LABEL", "autoheal").await;
+    let autoheal_connection_type = get_env("AUTOHEAL_CONNECTION_TYPE", "local");
+    let autoheal_container_label = get_env("AUTOHEAL_CONTAINER_LABEL", "autoheal");
     let autoheal_default_stop_timeout = get_env("AUTOHEAL_DEFAULT_STOP_TIMEOUT", "10")
-        .await
         .parse()
         .unwrap();
-    let autoheal_interval = get_env("AUTOHEAL_INTERVAL", "5").await.parse().unwrap();
-    let autoheal_start_period = get_env("AUTOHEAL_START_PERIOD", "0").await.parse().unwrap();
+    let autoheal_interval = get_env("AUTOHEAL_INTERVAL", "5").parse().unwrap();
+    let autoheal_start_period = get_env("AUTOHEAL_START_PERIOD", "0").parse().unwrap();
 
     // todo
     // Webhook variables
     // let webhook_url = "";
     // let webhook_json_key = "text";
     // let apprise_url = "";
 
-    // Determine connection type & Connect to docker
+    // Determine connection type & connect to docker per type
     let mut docker_tmp: Option<Docker> = None;
     match autoheal_connection_type.as_str() {
         "socket" => {
@@ -73,57 +74,74 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     // Establish loop interval
     let mut interval = tokio::time::interval(Duration::from_secs(autoheal_interval));
-
     loop {
-        // Loop interval
-        interval.tick().await;
         // Build container assessment criteria
         let mut filters = HashMap::new();
         filters.insert("health", vec!["unhealthy"]);
         if autoheal_container_label != "ALL" {
             filters.insert("label", vec![&autoheal_container_label]);
         }
+
         // Gather all containers that are unhealthy
         let container_options = Some(ListContainersOptions {
             all: true,
             filters,
             ..Default::default()
         });
         let containers = docker.list_containers(container_options).await?;
-
         for container in containers {
-            // Get name of container
-            let name0 = &container.names.unwrap()[0];
-            let name = name0.trim_matches('/').trim();
-            // Get id of container
-            let id: String = container.id.unwrap().chars().take(12).collect();
-            // Determine if state is readable
-            if let Some(state) = container.state {
-                // Determine if matches restart criteria
-                if !matches!(state.as_str(), "paused" | "restarting") {
-                    // Build restart options
-                    let restart_options = Some(RestartContainerOptions {
-                        t: autoheal_default_stop_timeout,
-                        ..Default::default()
-                    });
-                    // Report what is transpiring
-                    let msg0 = format!("Container '{}' ({}) unhealthy", name, id);
-                    // todo
-                    // let msg1 = format!(
-                    //     "Restarting '{}' with {}s timeout",
-                    //     name, autoheal_default_stop_timeout
-                    // );
-                    let msg1 = format!("Restarting '{}' now", name);
+            // Execute concurrently
+            let docker_clone = docker.clone();
+            let join = tokio::task::spawn(async move {
+                // Get name of container
+                let name0 = &container.names.unwrap()[0];
+                let name = name0.trim_matches('/').trim();
 
+                // Get id of container
+                let id: String = container.id.unwrap().chars().take(12).collect();
+
+                // Determine if state is readable
+                if let Some(state) = container.state {
+                    // Determine if matches restart criteria
+                    if !matches!(state.as_str(), "paused" | "restarting") {
+                        // Build restart options
+                        let restart_options = Some(RestartContainerOptions {
+                            t: autoheal_default_stop_timeout,
+                            ..Default::default()
+                        });
+
+                        // Report what is transpiring
+                        let msg0 = format!("Container '{}' ({}) unhealthy", name, id);
+                        // todo
+                        // let msg1 = format!(
+                        //     "Restarting '{}' with {}s timeout",
+                        //     name, autoheal_default_stop_timeout
+                        // );
+                        let msg1 = format!("Restarting '{}' now", name);
+                        log_message(&msg0).await;
+                        log_message(&msg1).await;
+
+                        // Restart unhealthy container
+                        let rslt = docker_clone.restart_container(&id, restart_options).await;
+                        match rslt {
+                            Ok(()) => {
+                                let msg0 = format!("Restart of '{}' was successful", name);
+                                log_message(&msg0).await;
+                            }
+                            Err(e) => {
+                                let msg0 = format!("Restart of '{}' failed: {}", name, e);
+                                log_message(&msg0).await;
+                            }
+                        }
+                    }
+                } else {
+                    let msg0 = format!("Could not determine state of {}", name);
                     log_message(&msg0).await;
-                    log_message(&msg1).await;
-                    // Restart unhealthy container
-                    docker.restart_container(&id, restart_options).await?;
                 }
-            } else {
-                let msg0 = format!("Could not determine state of {}", name);
-                log_message(&msg0).await;
-            }
+            });
+            join.await?;
         }
+        // Loop interval
+        interval.tick().await;
     }
 }