initial

.eslintrc.js

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+'use strict';
+
+module.exports = {
+    rules: {
+        indent: [2, 4, {
+            SwitchCase: 1
+        }],
+        quotes: [2, 'single'],
+        'linebreak-style': [2, 'unix'],
+        semi: [2, 'always'],
+        strict: [2, 'global'],
+        eqeqeq: 2,
+        'dot-notation': 2,
+        curly: 2,
+        'no-fallthrough': 2,
+        'quote-props': [2, 'as-needed'],
+        'no-unused-expressions': [2, {
+            allowShortCircuit: true
+        }],
+        'no-unused-vars': 2,
+        'no-undefined': 2,
+        'handle-callback-err': 2,
+        'no-new': 2,
+        'new-cap': 2,
+        'no-eval': 2,
+        'no-invalid-this': 2,
+        radix: [2, 'always'],
+        'no-use-before-define': [2, 'nofunc'],
+        'callback-return': [2, ['callback', 'cb', 'done']],
+        'comma-dangle': [2, 'never'],
+        'comma-style': [2, 'last'],
+        'no-regex-spaces': 2,
+        'no-empty': 2,
+        'no-duplicate-case': 2,
+        'no-empty-character-class': 2,
+        'no-redeclare': [2, {
+            builtinGlobals: true
+        }],
+        'block-scoped-var': 2,
+        'no-sequences': 2,
+        'no-throw-literal': 2,
+        'no-useless-call': 2,
+        'no-useless-concat': 2,
+        'no-void': 2,
+        yoda: 2,
+        'no-undef': 2,
+        'global-require': 2,
+        'no-var': 2,
+        'no-bitwise': 2,
+        'no-lonely-if': 2,
+        'no-mixed-spaces-and-tabs': 2,
+        'arrow-body-style': [2, 'as-needed'],
+        'arrow-parens': [2, 'as-needed'],
+        'prefer-arrow-callback': 2,
+        'object-shorthand': 2,
+        'prefer-spread': 2
+    },
+    env: {
+        es6: true,
+        node: true
+    },
+    extends: 'eslint:recommended',
+    globals: {
+        it: true,
+        describe: true,
+        beforeEach: true,
+        afterEach: true
+    },
+    fix: true
+};

.gitignore

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+node_modules
+.DS_Store
+npm-debug.log
+config/production.*
+config/development.*
+*v8.log

README.md

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+# zonemta-delivery-counters
+
+Delivery counters plugin for [ZoneMTA](https://github.com/zone-eu/zone-mta). Install this to see delivery counts and sending speed in [ZoneMTA WebAdmin](https://github.com/zone-eu/zmta-webadmin).
+
+## Setup
+
+Add this as a dependency for your ZoneMTA app
+
+```
+npm install zonemta-delivery-counters --save
+```
+
+Add a configuration entry in the "plugins" section of your ZoneMTA app
+
+```json
+...
+  "plugins": { 
+    "modules/zonemta-delivery-counters": {
+      "enabled": "main",
+      "redis": "redis://localhost:6379/2",
+      "prefix": "zmta"
+    }
+  }
+...
+```
+
+## License
+
+European Union Public License 1.1 ([details](http://ec.europa.eu/idabc/eupl.html))

index.js

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+'use strict';
+
+const redis = require('redis');
+
+module.exports.title = 'Stats Counter';
+module.exports.init = function (app, done) {
+
+    const client = redis.createClient(app.config.redis);
+    const prefix = app.config.prefix ? app.config.prefix + '_' : '';
+
+    client.on('error', err => app.logger.error('Redis', err.message));
+
+    app.addHook('queue:release', (zone, data, next) => {
+        if (!data || !data.status) {
+            return next();
+        }
+
+        let date = new Date();
+        let year = date.getUTCFullYear() + '';
+        let month = date.getUTCMonth() + 1;
+        let day = date.getUTCDate();
+
+        month = (month < 10 ? '0' : '') + month;
+        day = (day < 10 ? '0' : '') + day;
+
+        let key = data.status.delivered ? prefix + 'delivered' : prefix + 'bounced';
+        let domainKey = prefix + 'domains';
+
+        client.multi().
+        incr(key).
+        incr(key + '^' + year + '/' + month + '/' + day).
+        incr(key + '_' + zone.name).
+        incr(key + '_' + zone.name + '^' + year + '/' + month + '/' + day).
+        zincrby(domainKey, 1, data.domain).
+        zincrby(domainKey + '^' + year + '/' + month + '/' + day, 1, data.domain).
+        // Do not wait until counters are updated before returning. This prevents from issues
+        // with Redis connection. Redis is not needed for ZoneMTA to function
+        exec(() => false);
+
+        setImmediate(next);
+    });
+
+    done();
+};

package.json

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+{
+  "name": "zonemta-delivery-counters",
+  "version": "1.0.0",
+  "description": "Delivery counters plugin for ZoneMTA",
+  "main": "index.js",
+  "author": "Andris Reinman",
+  "license": "EUPL-1.1",
+  "dependencies": {
+    "redis": "^2.6.3"
+  }
+}