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<a href="../index.html">all files</a> / <a href="index.html">src/</a> breaker.js
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<div class='fl pad1y space-right2'>
<span class="strong">11.11% </span>
<span class="quiet">Statements</span>
<span class='fraction'>5/45</span>
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<span class="strong">33.33% </span>
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<span class='fraction'>2/6</span>
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<span class="strong">0% </span>
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<span class='fraction'>0/5</span>
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<span class="strong">11.36% </span>
<span class="quiet">Lines</span>
<span class='fraction'>5/44</span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">const { commandFactory } = require('hystrixjs');
const request = require('request');
const promisify = require('util.promisify');
const callbackify = require('util').callbackify || <span class="fstat-no" title="function not covered" >function (promiser) {</span>
<span class="cstat-no" title="statement not covered" > return <span class="fstat-no" title="function not covered" >function (...args) {</span></span>
<span class="cstat-no" title="statement not covered" > const callback = args.pop();</span>
<span class="cstat-no" title="statement not covered" > promiser.apply(this, args).then(</span>
result => <span class="cstat-no" title="statement not covered" >callback(null, result),</span>
error => <span class="cstat-no" title="statement not covered" >callback(error)</span>
);
};
};
module.exports = (redis, options) => {
<span class="cstat-no" title="statement not covered" > const service = promisify((command_obj, callback) => {</span>
<span class="cstat-no" title="statement not covered" > command_obj.callback = callback;</span>
});
<span class="cstat-no" title="statement not covered" > const fallback = promisify((error, [command_obj], callback) => {</span>
<span class="cstat-no" title="statement not covered" > command_obj.command = command_obj.callback = null;</span>
<span class="cstat-no" title="statement not covered" > callback(error);</span>
});
<span class="cstat-no" title="statement not covered" > const breaker = commandFactory.getOrCreate(options.name)</span>
.circuitBreakerErrorThresholdPercentage(options.errorThreshold)
.timeout(options.timeout)
.run(service)
.circuitBreakerRequestVolumeThreshold(options.volumeThreshold)
.requestVolumeRejectionThreshold(options.rejectionThreshold)
.circuitBreakerSleepWindowInMilliseconds(options.sleepWindow)
.statisticalWindowLength(options.windowLength)
.statisticalWindowNumberOfBuckets(options.windowBuckets)
.fallbackTo(fallback)
.build();
<span class="cstat-no" title="statement not covered" > const { createClient } = redis;</span>
<span class="cstat-no" title="statement not covered" > redis.createClient = <span class="fstat-no" title="function not covered" >function () {</span></span>
<span class="cstat-no" title="statement not covered" > const client = createClient.apply(this, arguments);</span>
<span class="cstat-no" title="statement not covered" > const { internal_send_command } = client;</span>
<span class="cstat-no" title="statement not covered" > client.internal_send_command = <span class="fstat-no" title="function not covered" >function (command_obj) {</span></span>
<span class="cstat-no" title="statement not covered" > const { command, callback = <span class="fstat-no" title="function not covered" >function () {</span>} } = command_obj;</span>
<span class="cstat-no" title="statement not covered" > if (!command) <span class="cstat-no" title="statement not covered" >return true;</span></span>
<span class="cstat-no" title="statement not covered" > callbackify(breaker.execute).call(breaker, command_obj, callback);</span>
<span class="cstat-no" title="statement not covered" > return internal_send_command.call(this, command_obj);</span>
};
<span class="cstat-no" title="statement not covered" > return client;</span>
};
<span class="cstat-no" title="statement not covered" > if (options.influxdbUrl) {</span>
<span class="cstat-no" title="statement not covered" > const { hystrixSSEStream } = require('hystrixjs');</span>
<span class="cstat-no" title="statement not covered" > hystrixSSEStream.toObservable(options.statsWindow).subscribe(json => {</span>
<span class="cstat-no" title="statement not covered" > const data = JSON.parse(json);</span>
<span class="cstat-no" title="statement not covered" > Object.keys(data.latencyExecute).forEach(key => {</span>
<span class="cstat-no" title="statement not covered" > data[`latencyExecute_${key}`] = data.latencyExecute[key];</span>
});
<span class="cstat-no" title="statement not covered" > Object.keys(data.latencyTotal).forEach(key => {</span>
<span class="cstat-no" title="statement not covered" > data[`latencyTotal_${key}`] = data.latencyTotal[key];</span>
});
<span class="cstat-no" title="statement not covered" > const tags = [</span>
'name',
'group'
];
<span class="cstat-no" title="statement not covered" > const fields = [</span>
'isCircuitBreakerOpen',
'errorPercentage',
'errorCount',
'requestCount',
'rollingCountFailure',
'rollingCountTimeout',
'rollingCountSuccess',
'rollingCountShortCircuited',
'rollingCountBadRequests',
'rollingCountCollapsedRequests',
'rollingCountExceptionsThrown',
'rollingCountFallbackFailure',
'rollingCountFallbackRejection',
'rollingCountFallbackSuccess',
'rollingCountResponsesFromCache',
'rollingCountSemaphoreRejected',
'rollingCountThreadPoolRejected',
'currentConcurrentExecutionCount',
'latencyExecute_mean',
'latencyExecute_0',
'latencyExecute_25',
'latencyExecute_50',
'latencyExecute_75',
'latencyExecute_90',
'latencyExecute_95',
'latencyExecute_99',
'latencyExecute_99.5',
'latencyExecute_100',
'latencyTotal_mean',
'latencyTotal_0',
'latencyTotal_25',
'latencyTotal_50',
'latencyTotal_75',
'latencyTotal_90',
'latencyTotal_95',
'latencyTotal_99',
'latencyTotal_99.5',
'latencyTotal_100'
];
<span class="cstat-no" title="statement not covered" > const extract = (keys, obj) => {</span>
<span class="cstat-no" title="statement not covered" > return keys.map(key => {</span>
<span class="cstat-no" title="statement not covered" > const value = obj[key].replace(/\W/g, '_');</span>
<span class="cstat-no" title="statement not covered" > return [key, value].join('=');</span>
});
};
<span class="cstat-no" title="statement not covered" > const parts = [</span>
['hystrix', ...extract(tags, data)],
[...extract(fields, data)],
[data.currentTime]
];
<span class="cstat-no" title="statement not covered" > request.post({</span>
url: `http://${options.influxdbUrl}:8086/write?db=telegraf&precision=ms`,
body: parts.map(part => <span class="cstat-no" title="statement not covered" >part.join(','))</span>.join(' ')
});
});
}
<span class="cstat-no" title="statement not covered" > return redis;</span>
};
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