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Add cache for downloaded binary files #1566

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Add cache for downloaded binary files #1566

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7d77916
1554 - add Intellij Idea to .gitignore
pitgrap May 26, 2016
36ac14e
1554 - cache binary in tmp folder
pitgrap May 26, 2016
1000858
1554 - use mkdirp instead of fs-extra
pitgrap May 26, 2016
e244410
1554 - add version as subfolder for tmp binary file
pitgrap May 31, 2016
1ce1bc1
1554 - use single quotes, added subfolder to get the same folder stru…
pitgrap May 31, 2016
a07af5a
1554 - optimize install script
pitgrap May 31, 2016
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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
*.log
.idea
.DS_Store
.sass-cache
build
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1 change: 1 addition & 0 deletions package.json
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Expand Up @@ -63,6 +63,7 @@
"mkdirp": "^0.5.1",
"nan": "^2.3.2",
"node-gyp": "^3.3.1",
"os-tmpdir": "^1.0.1",
"request": "^2.61.0",
"sass-graph": "^2.1.1"
},
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62 changes: 54 additions & 8 deletions scripts/install.js
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Expand Up @@ -5,6 +5,7 @@
var fs = require('fs'),
eol = require('os').EOL,
mkdir = require('mkdirp'),
tmpdir = require('os-tmpdir'),
path = require('path'),
sass = require('../lib/extensions'),
request = require('request'),
Expand Down Expand Up @@ -34,7 +35,7 @@ function download(url, dest, cb) {
return response.statusCode >= 200 && response.statusCode < 300;
};

var options = {
var options = {
rejectUnauthorized: false,
proxy: getProxy(),
headers: {
Expand Down Expand Up @@ -109,17 +110,62 @@ function checkAndDownloadBinary() {
return;
}

download(sass.getBinaryUrl(), sass.getBinaryPath(), function(err) {
if (err) {
console.error(err);
return;
}
var tmpPath = getTempPath();
if (!(sass.hasBinary(tmpPath))) { // download and install
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@xzyfer this is the part I'm saying will always fall back to the first installed binary file in the temp folder

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As I said I've haven't look over the implementation yet. It's entirely likely there are issues that will need to be addressed.

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@mriehema mriehema May 27, 2016 •
edited
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The name of the binary file in the tmp folder based on sass.getBinaryName(). E.g. win32-x64-47_binding.node, not just binding.node. If you use another version of node-sass, the name will change too.

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@xzyfer xzyfer May 27, 2016 •
edited
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You're both correct. The binaries won't clash on different node/arch/os
combinations. However because we're no longer within node_modules changing
versions of node-sass would be an issue. When changing versions of
node-sass the installer would see a binary for their environment on disk
but it would not the correct binary for their node-sass version.

You'll need to create a folder for the node-sass version for this to work
as intended.

download(sass.getBinaryUrl(), tmpPath, function(err) {
if (err) {
console.error(err);
return;
}
console.log('Binary downloaded at', tmpPath);
//copy only, if not already in vendor
if (tmpPath !== sass.getBinaryPath()) {
copyBinary(tmpPath);
}
});

console.log('Binary downloaded and installed at', sass.getBinaryPath());
});
} else { // install only
copyBinary(tmpPath);
}
});
}

/**
* Find a temp folder for file
*
* @returns {string} temp folder including binary file name
* @api private
*/

function getTempPath() {
var candidateTmpDir = tmpdir() || process.env.npm_config_tmp;
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This isn't correct anymore. It's not either or, it's an array of candidates. What you used to have was correct.

var candidateTmpDirs = [
  tmpdir(), 
  process.env.npm_config_tmp, 
  sass.getBinaryPath(),
];

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Please take a look at the whole function. I removed the unnecessary foreach() loop of this list. It's now either tmpdir(), or process.env.npm_config_tmp. If they fail, sass.getBinaryPath() is used as fallback.

Maybe we should (temporary) disable the skip_ci part of this install script to test it on your CI.

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I saw the change and IMHO it's incorrect since tmpdir() can never return a falsy value. Also, even if there is a tmpdir there is no guarantee it can be written to. The previous behaviour was correct because it asserted that either tmpdir() or process.env.npm_config_tmp existed and could be written to.

var candidatePath = path.join(candidateTmpDir, 'node-sass', 'releases', 'download', 'v' + pkg.version);

try {
mkdir.sync(candidatePath);
return path.join(candidatePath, sass.getBinaryName());
} catch (err) {
console.error(candidatePath, 'is not writable:', err.message);
return sass.getBinaryPath(); //fallback to vendor
}
}

/**
* Copy file
*
* @param from
* @api private
*/
function copyBinary(from) {
try {
fs.createReadStream(from).pipe(fs.createWriteStream(sass.getBinaryPath()));

console.log('Binary installed at', sass.getBinaryPath());
} catch (err) {
console.err('Cannot install binary', err.message);
}
}

/**
* Skip if CI
*/
Expand Down