D-Net

{

  "name": "server-side-cache-with-express",

  "main": "server.js",

  "scripts": {

    "start": "node cache.js"

  },

  "dependencies": {

    "express": "^4.15.3",

    "memory-cache": "^0.2.0",

    "superagent": "^3.8.0"

  },

  "engines": {

    "node": "8.1.x"

  },

  "license": "MIT"

}

'use strict'

var express = require('express');

var app = express();

var mcache = require('memory-cache');

const request = require('superagent');

var cache = (duration) => {

  return (req, res, next) => {

    let key = '__express__' + req.originalUrl || req.url

    let cachedBody = mcache.get(key)

    if (cachedBody) {

      res.send(cachedBody)

      return

    } else {

      res.sendResponse = res.send

      res.send = (body) => {

        mcache.put(key, body, duration * 1000);

        res.sendResponse(body)

      }

      next()

    }

  }

}

app.get('/get',cache(10), (req, res) => {

  setTimeout(() => {

    const url = (req.query)?req.query.url:null;

    if (!url){

        res.status(404).send('Not Found'); //not found

    }else{

     request.get(url, function (err, response) {

          if (err) throw err;

          // response.body contains an array of public repositories

          // var repoNumber = response.body.length;

          res.send(response);

    })

  }

})

});

app.use((req, res) => {

  res.status(404).send('Not Found') //not found

})

app.listen(process.env.PORT, function () {

  console.log(`Example app listening on port ${process.env.PORT}!`)

})

0 info it worked if it ends with ok

1 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', 'start' ]

2 info using npm@4.1.2

3 info using node@v7.6.0

4 verbose run-script [ 'prestart', 'start', 'poststart' ]

5 info lifecycle server-side-cache-with-express@~prestart: server-side-cache-with-express@

6 silly lifecycle server-side-cache-with-express@~prestart: no script for prestart, continuing

7 info lifecycle server-side-cache-with-express@~start: server-side-cache-with-express@

8 verbose lifecycle server-side-cache-with-express@~start: unsafe-perm in lifecycle true

9 verbose lifecycle server-side-cache-with-express@~start: PATH: /usr/local/lib/node_modules/npm/bin/node-gyp-bin:/home/argirok/projects/openaire/uoa-services-portal/trunk/services/cache/mecache/node_modules/.bin:/home/argirok/bin:/home/argirok/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/lib/jvm/java-8-oracle/bin:/usr/lib/jvm/java-8-oracle/db/bin:/usr/lib/jvm/java-8-oracle/jre/bin

10 verbose lifecycle server-side-cache-with-express@~start: CWD: /home/argirok/projects/openaire/uoa-services-portal/trunk/services/cache/mecache

11 silly lifecycle server-side-cache-with-express@~start: Args: [ '-c', 'node cache.js' ]

12 silly lifecycle server-side-cache-with-express@~start: Returned: code: 1  signal: null

13 info lifecycle server-side-cache-with-express@~start: Failed to exec start script

14 verbose stack Error: server-side-cache-with-express@ start: `node cache.js`

14 verbose stack Exit status 1

14 verbose stack     at EventEmitter.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/lifecycle.js:279:16)

14 verbose stack     at emitTwo (events.js:106:13)

14 verbose stack     at EventEmitter.emit (events.js:192:7)

14 verbose stack     at ChildProcess.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/spawn.js:40:14)

14 verbose stack     at emitTwo (events.js:106:13)

14 verbose stack     at ChildProcess.emit (events.js:192:7)

14 verbose stack     at maybeClose (internal/child_process.js:890:16)

14 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)

15 verbose pkgid server-side-cache-with-express@

16 verbose cwd /home/argirok/projects/openaire/uoa-services-portal/trunk/services/cache/mecache

17 error Linux 4.4.0-97-generic

18 error argv "/usr/local/bin/node" "/usr/local/bin/npm" "start"

19 error node v7.6.0

20 error npm  v4.1.2

21 error code ELIFECYCLE

22 error server-side-cache-with-express@ start: `node cache.js`

22 error Exit status 1

23 error Failed at the server-side-cache-with-express@ start script 'node cache.js'.

23 error Make sure you have the latest version of node.js and npm installed.

23 error If you do, this is most likely a problem with the server-side-cache-with-express package,

23 error not with npm itself.

23 error Tell the author that this fails on your system:

23 error     node cache.js

23 error You can get information on how to open an issue for this project with:

23 error     npm bugs server-side-cache-with-express

23 error Or if that isn't available, you can get their info via:

23 error     npm owner ls server-side-cache-with-express

23 error There is likely additional logging output above.

24 verbose exit [ 1, true ]

{

  "name": "redis-caching-tutorial",

  "version": "1.0.0",

  "description": "Introduction to caching with Redis",

  "main": "index.js",

  "scripts": {

    "test": "echo \"Error: no test specified\" && exit 1",

    "start": "PORT=3000 REDIS_PORT=7777 node cache.js",

    "dev": "PORT=3000 REDIS_PORT=7777 node --debug=5858 index.js"

  },

  "author": "Argiro Kokogiannaki <argirok@di.uoa.gr>",

  "license": "NKUA",

  "dependencies": {

    "express": "^4.14.0",

    "redis": "^2.6.3",

    "superagent": "^2.3.0"

  }

}

const redis = require('redis');

const express = require('express');

const request = require('superagent');

const PORT = process.env.PORT;

const REDIS_PORT = process.env.REDIS_PORT;

const app = express();

const client = redis.createClient(REDIS_PORT);

function respond(org, numberOfRepos) {

    return `Organization "${org}" has ${numberOfRepos} public repositories.`;

}

function cache(req, res, next) {

    const url = req.query.url;

    client.get(url, function (err, data) {

        if (data != null) {

            res.send(respond(url, data));

        } else {

            next();

        }

    });

}

// function getNumberOfRepos(req, res, next) {

//     const org = req.query.org;

//     request.get(`https://api.github.com/orgs/${org}/repos`, function (err, response) {

//         if (err) {

//             throw err;

//         }

//

//         var repoNumber = 0;

//         if (response && response.body) {

//             repoNumber = response.body.length;

//         }

//         client.setex(org, 5, repoNumber);

//         res.send(respond(org, repoNumber));

//     });

// }

//

// app.get('/repos', cache, getNumberOfRepos);

app.get('/get',cache, (req, res) => {

  setTimeout(() => {

    const url = (req.query)?req.query.url:null;

    if (!url){

        res.status(404).send('Not Found'); //not found

    }else{

     request.get(url, function (err, response) {

          if (err) throw err;

          // response.body contains an array of public repositories

          // var repoNumber = response.body.length;

          res.send(response);

    })

  }

})

});

app.listen(PORT, function () {

    console.log('app listening on port', PORT);

});

0 info it worked if it ends with ok

1 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', 'start' ]

2 info using npm@4.1.2

3 info using node@v7.6.0

4 verbose run-script [ 'prestart', 'start', 'poststart' ]

5 info lifecycle redis-caching-tutorial@1.0.0~prestart: redis-caching-tutorial@1.0.0

6 silly lifecycle redis-caching-tutorial@1.0.0~prestart: no script for prestart, continuing

7 info lifecycle redis-caching-tutorial@1.0.0~start: redis-caching-tutorial@1.0.0

8 verbose lifecycle redis-caching-tutorial@1.0.0~start: unsafe-perm in lifecycle true

9 verbose lifecycle redis-caching-tutorial@1.0.0~start: PATH: /usr/local/lib/node_modules/npm/bin/node-gyp-bin:/home/argirok/projects/openaire/uoa-services-portal/trunk/services/cache/redis/node_modules/.bin:/home/argirok/bin:/home/argirok/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/lib/jvm/java-8-oracle/bin:/usr/lib/jvm/java-8-oracle/db/bin:/usr/lib/jvm/java-8-oracle/jre/bin

10 verbose lifecycle redis-caching-tutorial@1.0.0~start: CWD: /home/argirok/projects/openaire/uoa-services-portal/trunk/services/cache/redis

11 silly lifecycle redis-caching-tutorial@1.0.0~start: Args: [ '-c', 'PORT=3000 REDIS_PORT=7777 node cache.js' ]

12 silly lifecycle redis-caching-tutorial@1.0.0~start: Returned: code: 1  signal: null

13 info lifecycle redis-caching-tutorial@1.0.0~start: Failed to exec start script

14 verbose stack Error: redis-caching-tutorial@1.0.0 start: `PORT=3000 REDIS_PORT=7777 node cache.js`

14 verbose stack Exit status 1

14 verbose stack     at EventEmitter.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/lifecycle.js:279:16)

14 verbose stack     at emitTwo (events.js:106:13)

14 verbose stack     at EventEmitter.emit (events.js:192:7)

14 verbose stack     at ChildProcess.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/spawn.js:40:14)

14 verbose stack     at emitTwo (events.js:106:13)

14 verbose stack     at ChildProcess.emit (events.js:192:7)

14 verbose stack     at maybeClose (internal/child_process.js:890:16)

14 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)

15 verbose pkgid redis-caching-tutorial@1.0.0

16 verbose cwd /home/argirok/projects/openaire/uoa-services-portal/trunk/services/cache/redis

17 error Linux 4.4.0-97-generic

18 error argv "/usr/local/bin/node" "/usr/local/bin/npm" "start"

19 error node v7.6.0

20 error npm  v4.1.2

21 error code ELIFECYCLE

22 error redis-caching-tutorial@1.0.0 start: `PORT=3000 REDIS_PORT=7777 node cache.js`

22 error Exit status 1

23 error Failed at the redis-caching-tutorial@1.0.0 start script 'PORT=3000 REDIS_PORT=7777 node cache.js'.

23 error Make sure you have the latest version of node.js and npm installed.

23 error If you do, this is most likely a problem with the redis-caching-tutorial package,

23 error not with npm itself.

23 error Tell the author that this fails on your system:

23 error     PORT=3000 REDIS_PORT=7777 node cache.js

23 error You can get information on how to open an issue for this project with:

23 error     npm bugs redis-caching-tutorial

23 error Or if that isn't available, you can get their info via:

23 error     npm owner ls redis-caching-tutorial

23 error There is likely additional logging output above.

24 verbose exit [ 1, true ]