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Merged
merged 2 commits into from
Apr 13, 2020
Merged

Ensure plugin completes #1

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4eacaea
Ensure plugin completes
ehmicky Apr 13, 2020
7c5ded2
Update src/index.js
ehmicky Apr 13, 2020
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49 changes: 14 additions & 35 deletions src/index.js
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Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
const { exec } = require("child_process");
const fs = require("fs");
const util = require("util")

const pWriteFile = util.promisify(fs.writeFile)

/**
* Overrides an ENV var with a value if it exists
Expand All @@ -8,52 +10,29 @@ const fs = require("fs");
* @param {*} mode the mode to use (prefix or suffix)
*/
function setEnvWithValue(key, contextOrBranch, mode) {
let foundOne = false;
let found;

if (mode === "prefix") {
const prefixedEnvVar = `${contextOrBranch}_${key}`;

if (process.env[prefixedEnvVar]) {
console.log(`Setting ${key} to the value from ${prefixedEnvVar}.`);
process.env[key] = process.env[prefixedEnvVar];
found = `${key}=${process.env[prefixedEnvVar]}`;
}
} else {
const suffixedEnvVar = `${key}_${contextOrBranch}`;
const envVar = mode === 'prefix' ? `${contextOrBranch}_${key}` : `${key}_${contextOrBranch}`;

if (process.env[suffixedEnvVar]) {
console.log(`Setting ${key} to the value from ${suffixedEnvVar}.`);
process.env[key] = process.env[suffixedEnvVar];
found = `${key}=${process.env[suffixedEnvVar]}`;
}
if (!process.env[envVar]) {
return;
}

return found;
console.log(`Setting ${key} to the value from ${envVar}.`);
process.env[key] = process.env[envVar];
return `${key}=${process.env[envVar]}\n`;
}

module.exports = {
onPreBuild: ({ inputs }) => {
onPreBuild: async ({ inputs }) => {
const context = `${process.env.CONTEXT}`.toUpperCase().replace(/-/g, "_");
const branch = `${process.env.BRANCH}`.toUpperCase().replace(/-/g, "_");
const replaced = [];

Object.keys(process.env).forEach((key) => {
const foundContext = setEnvWithValue(key, context, inputs.mode);
const foundBranch = setEnvWithValue(key, branch, inputs.mode);

if (foundContext) replaced.push(foundContext);
if (foundBranch) replaced.push(foundBranch);
});
const replaced = [].concat(...Object.keys(process.env)
.map((key) => [setEnvWithValue(key, context, inputs.mode), setEnvWithValue(key, branch, inputs.mode)])
).filter(Boolean)

if (replaced.length) {
// Write an env file so we can source it during build
const file = fs.createWriteStream(".env");
replaced.forEach(function (v) {
file.write(`${v}\n`);
});
file.end();

await pWriteFile(".env", replaced.join(""))
console.log(`Replaced ${replaced.length} ENVs and wrote .env file`);
} else {
console.log(`Nothing found... keeping default ENVs`);
Expand Down