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arangodb/js/apps/system/aardvark/statistics.js

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JavaScript

/*jslint indent: 2, nomen: true, maxlen: 100, white: true, plusplus: true, unparam: true */
/*global require, applicationContext*/
////////////////////////////////////////////////////////////////////////////////
/// @brief A Foxx.Controller to handle the statistics
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2014 triagens GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is triAGENS GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
/// @author Copyright 2014, triAGENS GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////
"use strict";
var internal = require("internal");
var cluster = require("org/arangodb/cluster");
var actions = require("org/arangodb/actions");
var console = require("console");
var FoxxController = require("org/arangodb/foxx").Controller;
var controller = new FoxxController(applicationContext);
var db = require("org/arangodb").db;
var STATISTICS_INTERVAL = 10;
// -----------------------------------------------------------------------------
// --SECTION-- private functions
// -----------------------------------------------------------------------------
////////////////////////////////////////////////////////////////////////////////
/// @brief avgPerSlice
////////////////////////////////////////////////////////////////////////////////
function avgPerSlice (now, last) {
var d = now.count - last.count;
if (d === 0) {
return 0;
}
return (now.sum - last.sum) / d;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief avgPerTimeSlice
////////////////////////////////////////////////////////////////////////////////
function avgPerTimeSlice (duration, now, last) {
if (duration === 0) {
return 0;
}
return (now.sum - last.sum) / duration;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief perTimeSlice
////////////////////////////////////////////////////////////////////////////////
function perTimeSlice (duration, now, last) {
if (duration === 0) {
return 0;
}
return (now - last) / duration;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief avgDistributon
////////////////////////////////////////////////////////////////////////////////
function avgPercentDistributon (now, last, cuts) {
var n = cuts.length + 1;
var result = new Array(n);
var count = 0;
var i;
if (last === null) {
count = now.count;
}
else {
count = now.count - last.count;
}
if (count === 0) {
for (i = 0; i < n; ++i) {
result[i] = 0;
}
}
else if (last === null) {
for (i = 0; i < n; ++i) {
result[i] = now.counts[i] / count;
}
}
else {
for (i = 0; i < n; ++i) {
result[i] = (now.counts[i] - last.counts[i]) / count;
}
}
return { values: result, cuts: cuts };
}
////////////////////////////////////////////////////////////////////////////////
/// @brief computeStatisticsRaw
////////////////////////////////////////////////////////////////////////////////
function computeStatisticsRaw (start, dbServer) {
var values;
var hasStart = false;
var serverFilter = "";
if (dbServer === undefined) {
if (cluster.isCluster()) {
if (cluster.isCoordinator()) {
serverFilter = "FILTER s.clusterId == @server";
dbServer = cluster.coordinatorId();
}
}
}
else {
serverFilter = "FILTER s.clusterId == @server";
}
if (start === null || start === undefined) {
values = db._query(
"FOR s IN _statistics "
+ serverFilter
+ " SORT s.time "
+ " return s",
{ server: dbServer });
}
else {
values = db._query(
"FOR s IN _statistics "
+ " FILTER s.time >= @start "
+ serverFilter
+ " SORT s.time "
+ " return s",
{ start: start - 2 * STATISTICS_INTERVAL, server: dbServer });
hasStart = true;
}
var times = [];
var series = [];
var lastTime = null;
var lastRaw = null;
var last2Raw = null;
var last3Raw = null;
while (values.hasNext()) {
var raw = values.next();
var t = raw.time;
if (lastTime !== null && (! hasStart || t >= start)) {
if (lastTime + STATISTICS_INTERVAL * 1.5 < t || raw.server.uptime < lastRaw.server.uptime) {
while (lastTime + STATISTICS_INTERVAL * 1.1 < t) {
lastTime += STATISTICS_INTERVAL;
times.push(lastTime);
series.push({});
}
}
else {
var d = t - lastTime;
var data = {};
// x (aka time) axis
times.push(t);
// y axis
series.push(data);
// time figures
data.totalTime = avgPerSlice(
raw.client.totalTime,
lastRaw.client.totalTime);
data.requestTime = avgPerSlice(
raw.client.requestTime,
lastRaw.client.requestTime);
data.queueTime = avgPerSlice(
raw.client.queueTime,
lastRaw.client.queueTime);
// there is a chance that the request and queue do not fit perfectly
// if io time get negative, simple ignore it
data.ioTime = data.totalTime - data.requestTime - data.queueTime;
if (data.ioTime < 0.0) {
data.ioTime = 0;
}
// data transfer figures
data.bytesSent = avgPerTimeSlice(
d,
raw.client.bytesSent,
lastRaw.client.bytesSent);
data.bytesReceived = avgPerTimeSlice(
d,
raw.client.bytesReceived,
lastRaw.client.bytesReceived);
// requests
data.optionsPerSecond = perTimeSlice(
d,
raw.http.requestsOptions,
lastRaw.http.requestsOptions);
data.putsPerSecond = perTimeSlice(
d,
raw.http.requestsPut,
lastRaw.http.requestsPut);
data.headsPerSecond = perTimeSlice(
d,
raw.http.requestsHead,
lastRaw.http.requestsHead);
data.postsPerSecond = perTimeSlice(
d,
raw.http.requestsPost,
lastRaw.http.requestsPost);
data.getsPerSecond = perTimeSlice(
d,
raw.http.requestsGet,
lastRaw.http.requestsGet);
data.deletesPerSecond = perTimeSlice(
d,
raw.http.requestsDelete,
lastRaw.http.requestsDelete);
data.othersPerSecond = perTimeSlice(
d,
raw.http.requestsOther,
lastRaw.http.requestsOther);
data.patchesPerSecond = perTimeSlice(
d,
raw.http.requestsPatch,
lastRaw.http.requestsPatch);
data.asyncPerSecond = perTimeSlice(
d,
raw.http.requestsAsync,
lastRaw.http.requestsAsync);
// memory size
data.virtualSize = raw.system.virtualSize;
data.residentSize = raw.system.residentSize;
data.residentSizePercent = raw.system.residentSizePercent;
data.numberOfThreads = raw.system.numberOfThreads;
data.clientConnections = raw.client.httpConnections;
// page faults
data.majorPageFaultsPerSecond = perTimeSlice(
d,
raw.system.majorPageFaults,
lastRaw.system.majorPageFaults);
data.minorPageFaultsPerSecond = perTimeSlice(
d,
raw.system.minorPageFaults,
lastRaw.system.minorPageFaults);
// cpu time
data.userTimePerSecond = perTimeSlice(
d,
raw.system.userTime,
lastRaw.http.userTime);
data.systemTimePerSecond = perTimeSlice(
d,
raw.system.systemTime,
lastRaw.system.systemTime);
}
}
// update last
lastTime = t;
last3Raw = last2Raw;
last2Raw = lastRaw;
lastRaw = raw;
}
var distribution;
var server;
var current;
if (lastRaw === null) {
distribution = {};
server = {};
current = {};
}
else {
server = {
physicalMemory: lastRaw.server.physicalMemory,
uptime: lastRaw.server.uptime
};
if (last2Raw === null) {
var dt = lastRaw.time;
var http = lastRaw.http;
current = {
asyncPerSecond: http.requestsAsync / dt,
asyncPerSecondPercentChange: 0,
syncPerSecond: (http.requestsTotal - http.requestsAsync) / dt,
syncPerSecondPercentChange: 0,
clientConnections: lastRaw.client.httpConnections,
clientConnectionsPercentChange: 0,
numberOfThreads: lastRaw.system.numberOfThreads,
numberOfThreadsPercentChange: 0,
virtualSize: lastRaw.system.virtualSize,
virtualSizePercentChange: 0
};
distribution = {
bytesSentPercent: avgPercentDistributon(
lastRaw.client.bytesSent,
null,
internal.bytesSentDistribution),
bytesReceivedPercent: avgPercentDistributon(
lastRaw.client.bytesReceived,
null,
internal.bytesReceivedDistribution),
totalTimePercent: avgPercentDistributon(
lastRaw.client.totalTime,
null,
internal.requestTimeDistribution),
requestTimePercent: avgPercentDistributon(
lastRaw.client.requestTime,
null,
internal.requestTimeDistribution),
queueTimePercent: avgPercentDistributon(
lastRaw.client.queueTime,
null,
internal.requestTimeDistribution)
};
}
else {
var dt = lastRaw.time - last2Raw.time;
var http = lastRaw.http;
var http2 = last2Raw.http;
var dt2 = 0;
var http3 = null;
if (last3Raw !== null) {
dt2 = last2Raw.time - last3Raw.time;
http3 = last3Raw.http;
}
// async requests
var n1 = (http.requestsAsync - http2.requestsAsync) / dt;
var m1 = 0;
if (last3Raw !== null) {
m1 = (http2.requestsAsync - http3.requestsAsync) / dt2;
}
if (n1 < 0) {
n1 = 0;
}
if (m1 < 0) {
m1 = 0;
}
var d1 = 0;
if (m1 !== 0) {
d1 = (n1 - m1) / m1;
}
// sync requests
var n5 = ((http.requestsTotal - http.requestsAsync)
- (http2.requestsTotal - http2.requestsAsync))
/ dt;
var m5 = 0;
if (last3Raw !== null) {
m5 = ((http2.requestsTotal - http2.requestsAsync)
- (http3.requestsTotal - http3.requestsAsync))
/ dt2;
}
if (n5 < 0) {
n5 = 0;
}
if (m5 < 0) {
m5 = 0;
}
var d5 = 0;
if (m5 !== 0) {
d5 = (n5 - m5) / m5;
}
// http client connections
var n2 = lastRaw.client.httpConnections;
var m2 = last2Raw.client.httpConnections;
var d2 = 0;
if (m2 !== 0) {
d2 = (n2 - m2) / n2;
}
// number of threads
var n3 = lastRaw.system.numberOfThreads;
var m3 = last2Raw.system.numberOfThreads;
var d3 = 0;
if (m3 !== 0) {
d3 = (n3 - m3) / n3;
}
// virtual size
var n4 = lastRaw.system.virtualSize;
var m4 = last2Raw.system.virtualSize;
var d4 = 0;
if (m4 !== 0) {
d4 = (n4 - m4) / n4;
}
// current summary
current = {
asyncPerSecond: n1,
asyncPerSecondPercentChange: d1,
syncPerSecond: n5,
syncPerSecondPercentChange: d5,
clientConnections: n2,
clientConnectionsPercentChange: d2,
numberOfThreads: n3,
numberOfThreadsPercentChange: d3,
virtualSize: n4,
virtualSizePercentChange: d4
};
// distribution summary
distribution = {
bytesSentPercent: avgPercentDistributon(
lastRaw.client.bytesSent,
last2Raw.client.bytesSent,
internal.bytesSentDistribution),
bytesReceivedPercent: avgPercentDistributon(
lastRaw.client.bytesReceived,
last2Raw.client.bytesReceived,
internal.bytesReceivedDistribution),
totalTimePercent: avgPercentDistributon(
lastRaw.client.totalTime,
last2Raw.client.totalTime,
internal.requestTimeDistribution),
requestTimePercent: avgPercentDistributon(
lastRaw.client.requestTime,
last2Raw.client.requestTime,
internal.requestTimeDistribution),
queueTimePercent: avgPercentDistributon(
lastRaw.client.queueTime,
last2Raw.client.queueTime,
internal.requestTimeDistribution)
};
}
}
return {
next: lastTime,
times: times,
series: series,
distribution: distribution,
current: current,
server: server
};
}
////////////////////////////////////////////////////////////////////////////////
/// @brief computeStatisticsRaw15M
////////////////////////////////////////////////////////////////////////////////
function computeStatisticsRaw15M (start, dbServer) {
var serverFilter = "";
if (dbServer === undefined) {
if (cluster.isCluster()) {
if (cluster.isCoordinator()) {
serverFilter = "FILTER s.clusterId == @server";
dbServer = cluster.coordinatorId();
}
}
}
else {
serverFilter = "FILTER s.clusterId == @server";
}
var values = db._query(
"FOR s IN _statistics "
+ " FILTER s.time >= @m15 "
+ serverFilter
+ " SORT s.time "
+ " return { time: s.time, "
+ " clientConnections: s.client.httpConnections, "
+ " numberOfThreads: s.system.numberOfThreads, "
+ " virtualSize: s.system.virtualSize }",
{ m15: start - 15 * 60, server: dbServer });
var lastRaw = null;
var count = 0;
var sumConnections = 0;
var sumThreads = 0;
var sumVirtualSize = 0;
var firstAsync = null;
var firstConnections = null;
var firstThreads = null;
var firstVirtualSize = null;
while (values.hasNext()) {
var raw = values.next();
if (lastRaw === null) {
lastRaw = raw;
}
else {
var d = raw.time - lastRaw.time;
if (d !== 0) {
var n2 = raw.clientConnections;
var n3 = raw.numberOfThreads;
var n4 = raw.virtualSize;
count++;
sumConnections += n2;
sumThreads += n3;
sumVirtualSize += n4;
if (firstConnections === null) {
firstConnections = n2;
}
if (firstThreads === null) {
firstThreads = n3;
}
if (firstVirtualSize === null) {
firstVirtualSize = n4;
}
}
}
}
if (count !== 0) {
sumConnections /= count;
sumThreads /= count;
sumVirtualSize /= count;
}
if (firstConnections === null) {
firstConnections = 0;
}
else if (firstConnections !== 0) {
firstConnections = (sumConnections - firstConnections) / firstConnections;
}
if (firstThreads === null) {
firstThreads = 0;
}
else if (firstThreads !== 0) {
firstThreads = (sumThreads - firstThreads) / firstThreads;
}
if (firstVirtualSize === null) {
firstVirtualSize = 0;
}
else if (firstVirtualSize !== 0) {
firstVirtualSize = (sumVirtualSize - firstVirtualSize) / firstVirtualSize;
}
return {
clientConnections: sumConnections,
clientConnectionsPercentChange: firstConnections,
numberOfThreads: sumThreads,
numberOfThreadsPercentChange: firstThreads,
virtualSize: sumVirtualSize,
virtualSizePercentChange: firstVirtualSize
};
}
////////////////////////////////////////////////////////////////////////////////
/// @brief convertSeries
////////////////////////////////////////////////////////////////////////////////
function convertSeries (series, name) {
var result = [];
var i;
for (i = 0; i < series.length; ++i) {
result.push(series[i][name]);
}
return result;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief computeStatisticsSeries
////////////////////////////////////////////////////////////////////////////////
function computeStatisticsSeries (start, attrs, dbServer) {
var result = {};
var raw = computeStatisticsRaw(start, dbServer);
result.nextStart = raw.next;
result.waitFor = (raw.next + STATISTICS_INTERVAL) - internal.time();
result.times = raw.times;
if (result.waitFor < 1) {
result.waitFor = 1;
}
if (attrs === null || attrs.avgTotalTime) {
result.avgTotalTime = convertSeries(raw.series, "totalTime");
}
if (attrs === null || attrs.totalTimeDistributionPercent) {
result.totalTimeDistributionPercent = raw.distribution.totalTimePercent;
}
if (attrs === null || attrs.avgRequestTime) {
result.avgRequestTime = convertSeries(raw.series, "requestTime");
}
if (attrs === null || attrs.requestTimeDistribution) {
result.requestTimeDistributionPercent = raw.distribution.requestTimePercent;
}
if (attrs === null || attrs.avgQueueTime) {
result.avgQueueTime = convertSeries(raw.series, "queueTime");
}
if (attrs === null || attrs.queueTimeDistributionPercent) {
result.queueTimeDistributionPercent = raw.distribution.queueTimePercent;
}
if (attrs === null || attrs.avgIoTime) {
result.avgIoTime = convertSeries(raw.series, "ioTime");
}
if (attrs === null || attrs.bytesSentPerSecond) {
result.bytesSentPerSecond = convertSeries(raw.series, "bytesSent");
}
if (attrs === null || attrs.bytesSentDistributionPercent) {
result.bytesSentDistributionPercent = raw.distribution.bytesSentPercent;
}
if (attrs === null || attrs.bytesReceivedPerSecond) {
result.bytesReceivedPerSecond = convertSeries(raw.series, "bytesReceived");
}
if (attrs === null || attrs.bytesReceivedDistributionPercent) {
result.bytesReceivedDistributionPercent = raw.distribution.bytesReceivedPercent;
}
if (attrs === null || attrs.optionsPerSecond) {
result.optionsPerSecond = convertSeries(raw.series, "optionsPerSecond");
}
if (attrs === null || attrs.putsPerSecond) {
result.putsPerSecond = convertSeries(raw.series, "putsPerSecond");
}
if (attrs === null || attrs.headsPerSecond) {
result.headsPerSecond = convertSeries(raw.series, "headsPerSecond");
}
if (attrs === null || attrs.postsPerSecond) {
result.postsPerSecond = convertSeries(raw.series, "postsPerSecond");
}
if (attrs === null || attrs.getsPerSecond) {
result.getsPerSecond = convertSeries(raw.series, "getsPerSecond");
}
if (attrs === null || attrs.deletesPerSecond) {
result.deletesPerSecond = convertSeries(raw.series, "deletesPerSecond");
}
if (attrs === null || attrs.othersPerSecond) {
result.othersPerSecond = convertSeries(raw.series, "othersPerSecond");
}
if (attrs === null || attrs.patchesPerSecond) {
result.patchesPerSecond = convertSeries(raw.series, "patchesPerSecond");
}
if (attrs === null || attrs.asyncPerSecond) {
result.asyncPerSecond = convertSeries(raw.series, "asyncPerSecond");
}
if (attrs === null || attrs.asyncPerSecondCurrent) {
result.asyncPerSecondCurrent = raw.current.asyncPerSecond;
}
if (attrs === null || attrs.asyncPerSecondCurrentPercentChange) {
result.asyncPerSecondCurrentPercentChange = raw.current.asyncPerSecondPercentChange;
}
if (attrs === null || attrs.syncPerSecondCurrent) {
result.syncPerSecondCurrent = raw.current.syncPerSecond;
}
if (attrs === null || attrs.syncPerSecondCurrentPercentChange) {
result.syncPerSecondCurrentPercentChange = raw.current.syncPerSecondPercentChange;
}
if (attrs === null || attrs.clientConnections) {
result.clientConnections = convertSeries(raw.series, "clientConnections");
}
if (attrs === null || attrs.clientConnectionsCurrent) {
result.clientConnectionsCurrent = raw.current.clientConnections;
}
if (attrs === null || attrs.clientConnectionsCurrentPercentChange) {
result.clientConnectionsCurrentPercentChange = raw.current.clientConnectionsPercentChange;
}
if (attrs === null || attrs.numberOfThreads) {
result.numberOfThreads = convertSeries(raw.series, "numberOfThreads");
}
if (attrs === null || attrs.numberOfThreadsCurrent) {
result.numberOfThreadsCurrent = raw.current.numberOfThreads;
}
if (attrs === null || attrs.numberOfThreadsCurrentPercentChange) {
result.numberOfThreadsCurrentPercentChange = raw.current.numberOfThreadsPercentChange;
}
if (attrs === null || attrs.residentSize) {
result.residentSize = convertSeries(raw.series, "residentSize");
}
if (attrs === null || attrs.residentSizePercent) {
result.residentSizePercent = convertSeries(raw.series, "residentSizePercent");
}
if (attrs === null || attrs.virtualSize) {
result.virtualSize = convertSeries(raw.series, "virtualSize");
}
if (attrs === null || attrs.virtualSizeCurrent) {
result.virtualSizeCurrent = raw.current.virtualSize;
}
if (attrs === null || attrs.virtualSizePercentChange) {
result.virtualSizePercentChange = raw.current.virtualSizePercentChange;
}
if (attrs === null || attrs.majorPageFaultsPerSecond) {
result.majorPageFaultsPerSecond = convertSeries(raw.series, "majorPageFaultsPerSecond");
}
if (attrs === null || attrs.minorPageFaultsPerSecond) {
result.minorPageFaultsPerSecond = convertSeries(raw.series, "minorPageFaultsPerSecond");
}
if (attrs === null || attrs.userTimePerSecond) {
result.userTimePerSecond = convertSeries(raw.series, "userTimePerSecond");
}
if (attrs === null || attrs.systemTimePerSecond) {
result.systemTimePerSecond = convertSeries(raw.series, "systemTimePerSecond");
}
if (attrs === null || attrs.uptime) {
result.uptime = raw.server.uptime;
}
if (attrs === null || attrs.physicalMemory) {
result.physicalMemory = raw.server.physicalMemory;
}
if (result.next !== null) {
var raw15 = computeStatisticsRaw15M(raw.next, dbServer);
if (attrs === null || attrs.clientConnections15M) {
result.clientConnections15M = raw15.clientConnections;
}
if (attrs === null || attrs.clientConnectionsPercentChange15M) {
result.clientConnectionsPercentChange15M = raw15.clientConnectionsPercentChange;
}
if (attrs === null || attrs.numberOfThreads15M) {
result.numberOfThreads15M = raw15.numberOfThreads;
}
if (attrs === null || attrs.numberOfThreadsPercentChange15M) {
result.numberOfThreadsPercentChange15M = raw15.numberOfThreadsPercentChange;
}
if (attrs === null || attrs.virtualSize15M) {
result.virtualSize15M = raw15.virtualSize;
}
if (attrs === null || attrs.virtualSizePercentChange15M) {
result.virtualSizePercentChange15M = raw15.virtualSizePercentChange;
}
}
return result;
}
// -----------------------------------------------------------------------------
// --SECTION-- public routes
// -----------------------------------------------------------------------------
////////////////////////////////////////////////////////////////////////////////
/// @brief full statistics history
////////////////////////////////////////////////////////////////////////////////
controller.get("full", function (req, res) {
var start = req.params("start");
var dbServer = req.params("DBserver");
var attrs = null;
if (start !== null && start !== undefined) {
start = parseInt(start, 10);
}
var series = computeStatisticsSeries(start, attrs, dbServer);
res.json(series);
}).summary("Returns the statistics")
.notes("This function is used to get the statistics history.");
////////////////////////////////////////////////////////////////////////////////
/// @brief full statistics history
////////////////////////////////////////////////////////////////////////////////
controller.get("history", function (req, res) {
var start = req.params("start");
var filter = req.params("filter");
var dbServer = req.params("DBserver");
var attrs = {};
var s = filter.split(",");
var i;
if (start !== null && start !== undefined) {
start = parseInt(start, 10);
}
for (i = 0; i < s.length; ++i) {
attrs[s[i]] = true;
}
if (dbServer === null) {
dbServer = undefined;
}
var series = computeStatisticsSeries(start, attrs, dbServer);
res.json(series);
}).summary("Returns the aggregated history")
.notes("This function is used to get the aggregated statistics history.");
////////////////////////////////////////////////////////////////////////////////
/// @brief cluster statistics history
////////////////////////////////////////////////////////////////////////////////
controller.get("cluster", function (req, res) {
if (! cluster.isCoordinator()) {
actions.resultError(req, res, actions.HTTP_FORBIDDEN, 0, "only allowed on coordinator");
return;
}
if (! req.parameters.hasOwnProperty("DBserver")) {
actions.resultError(req, res, actions.HTTP_BAD, "required parameter DBserver was not given");
return;
}
var DBserver = req.parameters.DBserver;
var coord = { coordTransactionID: ArangoClusterInfo.uniqid() };
var options = { coordTransactionID: coord.coordTransactionID, timeout:10 };
var url = "/_admin/aardvark/statistics/full";
var sep = "?";
if (req.parameters.hasOwnProperty("start")) {
url += sep + "start=" + encodeURIComponent(req.params("start"));
sep = "&";
}
if (req.parameters.hasOwnProperty("filter")) {
url += sep + "filter=" + encodeURIComponent(req.params("filter"));
sep = "&";
}
url += sep + "DBserver=" + encodeURIComponent(DBserver);
var op = ArangoClusterComm.asyncRequest(
"GET",
"server:"+DBserver,
"_system",
url,
"",
{},
options);
var r = ArangoClusterComm.wait(op);
res.contentType = "application/json; charset=utf-8";
if (r.status === "RECEIVED") {
res.responseCode = actions.HTTP_OK;
res.body = r.body;
}
else if (r.status === "TIMEOUT") {
res.responseCode = actions.HTTP_BAD;
res.body = JSON.stringify( {"error":true, "errorMessage": "operation timed out"});
}
else {
res.responseCode = actions.HTTP_BAD;
var bodyobj;
try {
bodyobj = JSON.parse(r.body);
}
catch (err) {
}
res.body = JSON.stringify({
"error":true,
"errorMessage": "error from DBserver, possibly DBserver unknown",
"body": bodyobj
} );
}
}).summary("Returns the complete or partial history of a cluster member")
.notes("This function is used to get the complete or partial statistics history of a cluster member.");
// -----------------------------------------------------------------------------
// --SECTION-- END-OF-FILE
// -----------------------------------------------------------------------------
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