WIP - feat(docker): add docker field to disable modifying location to…

… config.toml

Signed-off-by: Riccardo Gallo <riccardo.gallo@secomind.com>

Cargo.toml

@@ -29,3 +29,6 @@ toml = "0.8.12"
 tracing = "0.1.37"
 tracing-subscriber = { version = "0.3.0", features = ["env-filter"]}
 uuid = { version = "1.10.0", features = ["v4", "serde"] }
+
+[features]
+docker = []

README.md

@@ -136,12 +136,13 @@ To run the container with your configuration file:
 1. Ensure you have defined your astarte configuration file `config.toml`
 2. Run the Docker container, mounting the configuration file:
    ```sh
-   docker run -v /path/to/your/config.toml:<MOUNT_TO_THIS_PATH> -e ASTARTE_CONFIG_PATH="<MOUNT_TO_THIS_PATH>" stream-rust-test:latest
+   docker run -v /path/to/your/config.toml:/etc/stream-rust-test/ stream-rust-test:latest
    ```
 
 Replace `/path/to/your/config.toml` with the actual path to your configuration file.
 
-Note: `MOUNT_TO_THIS_PATH` must be an absolute path.
+Note: do not set the `ASTARTE_CONFIG_PATH` environment variable when running the docker container, since it should only
+be used when running locally.
 
 #### Run the container with environment variables
 

src/cli.rs

@@ -8,18 +8,18 @@
 
 use crate::math::MathFunction;
 use clap::Parser;
-use std::path::PathBuf;
 
 /// Configuration for the values to be sent to Astarte
 #[derive(Debug, Clone, Parser)]
 #[clap(version, about)]
 pub struct Config {
+    #[cfg(not(feature = "docker"))]
     /// Path to the directory containing the Astarte configuration file config.toml
     ///
     /// First, the Astarte configuration is taken from ENV vars, then from the config.toml if the
     /// path has been specified
     #[clap(short, long, env = "ASTARTE_CONFIG_PATH")]
-    pub astarte_config_path: Option<PathBuf>,
+    pub astarte_config_path: Option<std::path::PathBuf>,
     /// Math function the device will use to send data to Astarte
     #[clap(short, long, default_value = "default", env = "MATH_FUNCTION")]
     pub math_function: MathFunction,

src/main.rs

@@ -52,11 +52,16 @@ async fn main() -> eyre::Result<()> {
     if let Err(err) = astarte_cfg_builder.try_from_env() {
         warn!("failed to retrieve Astarte connection config from ENV: {err}");
 
-        if let Some(path) = &cli_cfg.astarte_config_path {
-            let path = path.join("config.toml");
-            info!("retrieve Astarte connection config from {}", path.display());
-
+        if cfg!(feature = "docker") {
+            let path = std::path::PathBuf::from("/etc/stream-rust-test/config.toml");
             astarte_cfg_builder.from_toml(path).await;
+        } else {
+            if let Some(path) = &cli_cfg.astarte_config_path {
+                let path = path.join("config.toml");
+                info!("retrieve Astarte connection config from {}", path.display());
+
+                astarte_cfg_builder.from_toml(path).await;
+            }
         }
     };