Merge pull request 'feature/envvars' (#21) from feature/envvars into rc

.gitignore

@@ -1,4 +1,5 @@
 /target
 .idea
+/.env
 Cargo.lock
 hagent_test.sock

noxis-rs/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "noxis-rs"
-version = "0.11.3"
+version = "0.11.10"
 edition = "2021"
 
 [dependencies]
@@ -17,3 +17,4 @@ serde_json = "1.0.118"
 sysinfo = "0.32.0"
 tokio = { version = "1.38.0", features = ["full", "time"] }
 noxis-cli = { path = "../noxis-cli" }
+dotenv = "0.15.0"

noxis-rs/src/options/preboot.rs

@@ -3,9 +3,91 @@
 use anyhow::{Result, Ok, Error};
 use clap::Parser;
 use std::path::PathBuf;
+use std::env::var;
+use dotenv::dotenv;
 
 const SOCKET_PATH: &str = "/var/run/enode/hostagent.sock";
 
+///
+enum EnvVars {
+    NoxisNoHagent,
+    NoxisNoLogs,
+    NoxisRefreshLogs,
+    NoxisNoRemoteConfig,
+    NoxisNoConfigSub,
+    NoxisSocketPath,
+    NoxisLogTo,
+    NoxisRemoteServerUrl,
+    NoxisConfig,
+    NoxisMetrics,
+}
+
+///
+impl std::fmt::Display for EnvVars {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        match self {
+            EnvVars::NoxisNoHagent => write!(f, "NOXIS_NO_HAGENT"),
+            EnvVars::NoxisNoLogs => write!(f, "NOXIS_NO_LOGS"),
+            EnvVars::NoxisRefreshLogs => write!(f, "NOXIS_REFRESH_LOGS"),
+            EnvVars::NoxisNoRemoteConfig => write!(f, "NOXIS_NO_REMOTE_CONFIG"),
+            EnvVars::NoxisNoConfigSub => write!(f, "NOXIS_NO_CONFIG_SUB"),
+            EnvVars::NoxisSocketPath => write!(f, "NOXIS_SOCKET_PATH"),
+            EnvVars::NoxisLogTo => write!(f, "NOXIS_LOG_TO"),
+            EnvVars::NoxisRemoteServerUrl => write!(f, "NOXIS_REMOTE_SERVER_URL"),
+            EnvVars::NoxisConfig => write!(f, "NOXIS_CONFIG"),
+            EnvVars::NoxisMetrics => write!(f, "NOXIS_METRICS"),
+        }
+    }
+}
+
+///
+impl<'a> EnvVars {
+    // Default trait func is not satisfying this issue
+    fn default(self) -> &'a str {
+        match self {
+            EnvVars::NoxisNoHagent => "false",
+            EnvVars::NoxisNoLogs => "false",
+            EnvVars::NoxisRefreshLogs => "false",
+            EnvVars::NoxisNoRemoteConfig => "false",
+            EnvVars::NoxisNoConfigSub => "false",
+            EnvVars::NoxisSocketPath => "/var/run/enode/hostagent.sock",
+            EnvVars::NoxisLogTo => "./",
+            EnvVars::NoxisRemoteServerUrl => "localhost",
+            EnvVars::NoxisConfig => "./settings.json",
+            EnvVars::NoxisMetrics => "full",
+        }
+    }
+    fn process_env_var(self, preboot_value: &str) {
+        // let default = self.default();
+        match var(self.to_string()) {
+            std::result::Result::Ok(val) => {
+                if val != preboot_value {
+                    std::env::set_var(self.to_string(), self.default());
+                }
+            },
+            Err(_) => {
+                std::env::set_var(self.to_string(), preboot_value);
+            },
+        }
+    }
+    pub fn setup(preboot: &PrebootParams) {
+        // setup default if not exists
+        //  check values and save preboot states in env vars if not equal
+
+        Self::NoxisNoHagent.process_env_var(&preboot.no_hostagent.to_string());
+        Self::NoxisNoLogs.process_env_var(&preboot.no_logs.to_string());
+        Self::NoxisRefreshLogs.process_env_var(&preboot.refresh_logs.to_string());
+        Self::NoxisNoRemoteConfig.process_env_var(&preboot.no_remote_config.to_string());
+        Self::NoxisNoConfigSub.process_env_var(&preboot.no_sub.to_string());
+        Self::NoxisSocketPath.process_env_var(preboot.socket_path.to_str().unwrap());
+        Self::NoxisLogTo.process_env_var(preboot.log_to.to_str().unwrap());
+        Self::NoxisRemoteServerUrl.process_env_var(&preboot.remote_server_url);
+        Self::NoxisConfig.process_env_var(preboot.config.to_str().unwrap());
+        Self::NoxisMetrics.process_env_var(&preboot.metrics.to_string());
+
+    }
+}
+
 /// # Enum `MetricsPrebootParams`
 /// ## for setting up metrics mode as preboot param from command prompt 
 /// 
@@ -187,6 +269,7 @@ pub struct PrebootParams {
 /// ## to enable validation mechanism
 impl PrebootParams {
     pub fn validate(mut self) -> Result<Self> {
+        dotenv().ok();
         if !self.socket_path.exists() && !self.no_hostagent {
             if self.socket_path.to_string_lossy() == SOCKET_PATH {
                 self.no_hostagent = true;
@@ -211,10 +294,15 @@ impl PrebootParams {
         // existing sock file
         if !self.config.exists() {
             eprintln!("Error: Invalid character in config file. Config path was set to default");
+            let config = PathBuf::from("/etc/settings.json");
+            if !config.exists() && self.no_remote_config {
+                return Err(Error::msg("Noxis cannot run without config. Create local config or enable remote-config mechanism"));
+            }
             self.config = PathBuf::from("settings.json");
             // return Err(Error::msg("Local Config Not Found or Noxis can't read it. Cannot start"));
         }
         // redis server check
+        EnvVars::setup(&self);
         Ok(self)
     }
 }