Implement proper logging

The `log` and `env_logger` crates are used for logging.

Cargo.lock

@@ -306,6 +306,19 @@ version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "88d7ed2934d741c6b37e33e3832298e8850b53fd2d2bea03873375596c7cea4e"
 
+[[package]]
+name = "env_logger"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "17392a012ea30ef05a610aa97dfb49496e71c9f676b27879922ea5bdf60d9d3f"
+dependencies = [
+ "atty",
+ "humantime",
+ "log 0.4.14",
+ "regex",
+ "termcolor",
+]
+
 [[package]]
 name = "filetime"
 version = "0.2.14"
@@ -442,6 +455,12 @@ version = "1.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "615caabe2c3160b313d52ccc905335f4ed5f10881dd63dc5699d47e90be85691"
 
+[[package]]
+name = "humantime"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
+
 [[package]]
 name = "hyper"
 version = "0.10.16"
@@ -1062,6 +1081,15 @@ dependencies = [
  "unicode-xid 0.2.1",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dfed899f0eb03f32ee8c6a0aabdb8a7949659e3466561fc0adf54e26d88c5f4"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "thread_local"
 version = "1.1.3"
@@ -1224,6 +1252,8 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "dirs",
+ "env_logger",
+ "log 0.4.14",
  "regex",
  "rocket",
  "rocket_contrib",

Cargo.toml

@@ -13,3 +13,5 @@ serde_yaml = "0.8"
 regex = "1.4"
 dirs = "3.0"
 anyhow = "1.0"
+log = "0.4"
+env_logger = "0.8"

src/main.rs

@@ -1,15 +1,13 @@
 #![feature(proc_macro_hygiene, decl_macro)]
 
 use anyhow::{anyhow, bail, Result};
+use log::{debug, info, trace};
 use regex::Regex;
 use rocket::{fairing::AdHoc, get, post, routes, State};
 use rocket_contrib::json::Json;
 use serde::{Deserialize, Serialize};
 
-use std::collections::HashMap;
-use std::fs::File;
-use std::io::BufReader;
-use std::process::Command;
+use std::{collections::HashMap, fs::File, io::BufReader, net::SocketAddr, process::Command};
 
 #[derive(Debug, Deserialize, Serialize)]
 struct Config {
@@ -37,23 +35,20 @@ fn index() -> &'static str {
 }
 
 fn execute_hook(name: &str, hook: &Hook, data: &serde_json::Value) -> Result<()> {
-    println!(
-        "hook: {:?} action: {:?} filters: {:?}",
-        name, hook.action, hook.filters
-    );
+    debug!("Running hook `{}`", name);
 
     for (filter_name, filter) in hook.filters.iter() {
-        println!("filter: {:?}", filter);
+        debug!("Matching filter `{}`", filter_name);
 
         if let Some(value) = data.pointer(&filter.pointer) {
             let regex = Regex::new(&filter.regex)?;
 
             if let Some(value) = value.as_str() {
                 if !regex.is_match(value) {
+                    info!("Filter `{}` in hook `{}` did not match", filter_name, name);
                     return Ok(());
                 }
             } else {
-                println!("Error could not parse pointer");
                 anyhow!(
                     "Could not parse pointer in hook `{}` from filter `{}`",
                     name,
@@ -63,10 +58,8 @@ fn execute_hook(name: &str, hook: &Hook, data: &serde_json::Value) -> Result<()>
         }
     }
 
-    println!("execute action");
-
     if let Some(action) = &hook.action {
-        println!("execute {}", action);
+        info!("Execute `{}` from hook `{}`", action, name);
 
         Command::new(action).spawn()?;
     }
@@ -75,9 +68,13 @@ fn execute_hook(name: &str, hook: &Hook, data: &serde_json::Value) -> Result<()>
 }
 
 #[post("/", format = "json", data = "<data>")]
-fn receive_hook(config: State<Config>, data: Json<Data>) -> Result<String> {
+fn receive_hook(address: SocketAddr, config: State<Config>, data: Json<Data>) -> Result<String> {
+    info!("POST request received from: {}", address);
+
     let data = serde_json::to_value(data.0)?;
 
+    trace!("Data received from: {}\n{}", address, data);
+
     for (hook_name, hook) in config.hooks.iter() {
         execute_hook(&hook_name, &hook, &data)?;
     }
@@ -87,18 +84,27 @@ fn receive_hook(config: State<Config>, data: Json<Data>) -> Result<String> {
 
 fn get_config() -> Result<File> {
     if let Ok(config) = File::open("/etc/webhookey/config.yml") {
+        info!("Loading configuration from `/etc/webhookey/config.yml`");
+
         return Ok(config);
     }
 
     if let Some(mut path) = dirs::config_dir() {
         path.push("webhookey/config.yml");
 
-        if let Ok(config) = File::open(path) {
+        if let Ok(config) = File::open(&path) {
+            info!(
+                "Loading configuration from `{}`",
+                path.to_str().unwrap_or("path not printable"),
+            );
+
             return Ok(config);
         }
     }
 
     if let Ok(config) = File::open("config.yml") {
+        info!("Loading configuration from `./config.yml`");
+
         return Ok(config);
     }
 
@@ -106,9 +112,13 @@ fn get_config() -> Result<File> {
 }
 
 fn main() -> Result<()> {
-    let config: Config = serde_yaml::from_reader(BufReader::new(get_config()?))?;
+    env_logger::init();
 
-    println!("{}", serde_yaml::to_string(&config)?);
+    let config = get_config()?;
+
+    let config: Config = serde_yaml::from_reader(BufReader::new(config))?;
+
+    trace!("Parsed configuration:\n{}", serde_yaml::to_string(&config)?);
 
     rocket::ignite()
         .mount("/", routes![index, receive_hook])