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🛠 support config file #23

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Merged
hgwood merged 1 commit into from
Oct 8, 2020
Merged

🛠 support config file #23

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6 changes: 6 additions & 0 deletions .env.example
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Original file line number Diff line number Diff line change
@@ -1,2 +1,8 @@
# Server port; optional, defaults to '3000'
PORT=

# Config as JSON; see src/config.js for the schema
PROXYBEEZ_CONFIG=

# File path to a JSON file containing the config; only used if PROXYBEEZ_CONFIG is empty
PROXYBEEZ_CONFIG_FILE=config.json
6 changes: 2 additions & 4 deletions .gitignore
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@@ -1,5 +1,3 @@
.env
*.txt
users/
node_modules/
lastupdate
.env
config.json
31 changes: 30 additions & 1 deletion src/index.js
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Original file line number Diff line number Diff line change
@@ -1,13 +1,42 @@
import * as fs from "fs";
import { typecheckConfig } from "./config.js";
import { createServer } from "./server.js";

const PORT = process.env.PORT || 3000;
const CONFIG = parseConfig(process.env.PROXYBEEZ_CONFIG);
const CONFIG = readConfig(
process.env.PROXYBEEZ_CONFIG,
process.env.PROXYBEEZ_CONFIG_FILE
);

createServer(CONFIG).listen(PORT, () => {
console.log(`Listening on port ${PORT}`);
});

/**
*
* @param {string | undefined} envConfig
* @param {string | undefined} fileConfig
*/
function readConfig(envConfig, fileConfig) {
if (envConfig) {
return parseConfig(envConfig);
}
if (!fileConfig) {
throw new Error(
`environment variable PROXYBEEZ_CONFIG and PROXYBEEZ_CONFIG_FILE are both empty; please set either one`
);
}
let fileContent;
try {
fileContent = fs.readFileSync(fileConfig).toString();
} catch (err) {
throw new Error(
`environment variable PROXYBEEZ_CONFIG is empty and PROXYBEEZ_CONFIG_FILE is '${fileConfig}' which does not point to a file that could be read: ${err.message}`
);
}
return parseConfig(fileContent);
}

/**
*
* @param {unknown} stringConfig
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