added ability to use .env file

Author: Paul Heijman

.env.example

@@ -0,0 +1,2 @@
+SOLR_COPY_URL=http://192.168.0.1:8983/solr
+SOLR_COPY_DIR=/mnt/backup

Cargo.toml

@@ -29,6 +29,7 @@ simplelog = "0.12.*"
 crossbeam-channel = "0.5.1"
 crossbeam-utils = "0.8.*"
 ctrlc = { version = "3.4.*", features = ["termination"] }
+dotenvy = "0.15.7"
 
 # standard crate data is left out
 [dev-dependencies]

README.md

@@ -17,6 +17,14 @@ Command line tool for backup and restore of documents stored in cores of [Apache
 <!-- markdownlint <!-- markdownlint-disable-next-line no-inline-html --> -->
 [<img alt="Send some cookies" src="http://img.shields.io/liberapay/receives/juarezr.svg?label=Send%20some%20cookies&logo=liberapay">](https://liberapay.com/juarezr/donate)
 
+## Config
+
+The following environment variables can be used for common parameters:
+- `SOLR_COPY_URL` for the url pointing to the Solr cluster
+- `SOLR_COPY_DIR` for the existing folder where the zip backup files containing the extracted documents are stored
+
+These variables can also be stored in a `.env` file alongside the `solrcopy` binary. See `.env.example`
+
 ## Usage
 
 1. Use the command `solrcopy backup` for dumping documents from a Solr core into local zip files.

src/main.rs

@@ -56,8 +56,12 @@ mod testsolr;
 // region Main Entry Point
 
 use crate::args::Cli;
+use dotenvy::dotenv;
 
 pub fn main() -> Result<(), Box<dyn std::error::Error>> {
+
+    dotenv().ok();
+
     let parsed = Cli::parse_from_args()?;
 
     wrangle::command_exec(&parsed)