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| "use strict";
var uuid = require('uuid');
var lib = require("requirefrom")("lib");
var Mesos = lib("mesos");
var Builder = lib("builder");
var helpers = lib("helpers");
var mesos = new Mesos().getMesos();
function searchPortsInRanges(task, offerResources, usableRanges, neededStaticPorts, neededPorts) {
var tempPortRanges = [];
var usedPorts = [];
var begin = 0;
var stop = false;
var range;
var newBegin;
var newEnd;
var i;
var index;
var port;
while (neededStaticPorts > 0 && !stop && offerResources.portRanges && offerResources.portRanges.length > 0) {
range = offerResources.portRanges.splice(0, 1)[0]; // Get first remaining range
if (range.begin <= task.resources.staticPorts[begin] && range.end >= task.resources.staticPorts[task.resources.staticPorts.length - 1]) {
usableRanges.push(new mesos.Value.Range(range.begin, task.resources.staticPorts[task.resources.staticPorts.length - 1]));
newBegin = range.begin;
newEnd = range.end;
i = begin;
while (i < task.resources.staticPorts.length) {
port = task.resources.staticPorts[i];
if (newBegin < port) {
// Re-add range below port
tempPortRanges.push(new mesos.Value.Range(newBegin, port - 1));
}
newBegin = port + 1;
if (newEnd === port) {
newEnd -= 1;
}
i += 1;
}
if (newBegin <= newEnd) {
tempPortRanges.push(new mesos.Value.Range(newBegin, newEnd));
}
neededStaticPorts = 0;
} else if (range.begin <= task.resources.staticPorts[begin] && range.end >= task.resources.staticPorts[begin]) {
usableRanges.push(range);
// Count the number of ports that are not served.
for (i = begin; i < task.resources.staticPorts.length; i++) {
if (task.resources.staticPorts[i] > range.end) {
break;
}
}
neededStaticPorts -= i - begin;
newBegin = range.begin;
newEnd = range.end;
index = begin;
while (index < i) {
port = task.resources.staticPorts[index];
if (newBegin < port) {
// Re-add range below port
tempPortRanges.push(new mesos.Value.Range(newBegin, port - 1));
}
Eif (newBegin <= port) {
newBegin = port + 1;
}
if (newEnd === port) {
newEnd -= 1;
}
index += 1;
}
if (newBegin <= newEnd) {
tempPortRanges.push(new mesos.Value.Range(newBegin, newEnd));
}
begin = i;
} else {
tempPortRanges.push(range);
}
}
if (neededStaticPorts === 0) {
neededPorts -= task.resources.staticPorts.length;
usedPorts = task.resources.staticPorts;
offerResources.portRanges = offerResources.portRanges.concat(tempPortRanges);
}
return {usedPorts: usedPorts, neededPorts: neededPorts, neededStaticPorts: neededStaticPorts};
}
module.exports = {
"SUBSCRIBED": function (subscribed) {
this.logger.debug("SUBSCRIBED: " + JSON.stringify(subscribed));
},
"OFFERS": function (Offers) {
var self = this;
self.logger.debug("OFFERS: " + JSON.stringify(Offers));
// Iterate over all Offers
Offers.offers.forEach(function (offer) {
var toLaunch = [];
var declinedNoPending = false;
var offerResources = {
cpus: 0,
mem: 0,
disk: 0,
ports: [],
portRanges: []
};
// Decline Offer directly if there are no pending tasks
if (self.pendingTasks.length === 0) {
self.logger.debug("DECLINE: Declining Offer " + offer.id.value);
// Decline offer
self.decline([offer.id], null);
// To prevent double decline
declinedNoPending = true;
}
// Iterate over the Resources of the Offer and fill the offerResources object
// (will be used to match against the requested task resources)
offer.resources.forEach(function (resource) {
if (resource.type === "SCALAR" && ["cpus", "mem", "disk"].indexOf(resource.name) > -1) {
offerResources[resource.name] += resource.scalar.value;
} else if (resource.type === "RANGES" && resource.name === "ports") {
resource.ranges.range.forEach(function (range) {
// Add to ranges
offerResources.portRanges.push(range);
// Populate port list
for (var p = range.begin; p <= range.end; p++) {
// Add port to port array
offerResources.ports.push(p);
}
});
}
});
// Now, iterate over all tasks that still need to be run
self.pendingTasks.forEach(function (task) {
self.logger.debug("pendingTask: " + JSON.stringify(task));
// Match the task resources to the offer resources
self.logger.debug("CPUs in offer:" + offerResources.cpus.toString() + " Memory in offer: " + offerResources.mem.toString() + " Port num in offer: " + offerResources.ports.length.toString());
if (task.resources.cpus <= offerResources.cpus && task.resources.mem <= offerResources.mem && task.resources.disk <= offerResources.disk && (task.resources.ports <= offerResources.ports.length || (self.options.staticPorts && task.resources.staticPorts && task.resources.staticPorts.length <= offerResources.ports.length))) {
self.logger.debug("Offer " + offer.id.value + " has resources left");
// Environment variables
var envVars = [];
var demandedResources = [
helpers.fixEnums(new Builder("mesos.Resource").setName("cpus").setType(mesos.Value.Type.SCALAR).setScalar(new mesos.Value.Scalar(task.resources.cpus))),
helpers.fixEnums(new Builder("mesos.Resource").setName("mem").setType(mesos.Value.Type.SCALAR).setScalar(new mesos.Value.Scalar(task.resources.mem)))
];
// Reduce available offer cpu and mem resources by requested task resources
offerResources.cpus -= task.resources.cpus;
offerResources.mem -= task.resources.mem;
if (task.resources.disk > 0) {
demandedResources.push(helpers.fixEnums(new Builder("mesos.Resource").setName("disk").setType(mesos.Value.Type.SCALAR).setScalar(new mesos.Value.Scalar(task.resources.disk))));
// Reduce disk resources by requested task resources
offerResources.disk -= task.resources.disk;
}
if (task.resources.ports > 0) {
var neededPorts = task.resources.ports;
var usableRanges = [];
var usedPorts = [];
var neededStaticPorts = task.resources.staticPorts ? task.resources.staticPorts.length : 0;
if (self.options.staticPorts && task.resources.staticPorts && task.resources.staticPorts.length > 0) { // Using fixed ports defined in the framework configuration
usedPorts = task.resources.staticPorts;
var __ret = searchPortsInRanges.call(self, task, offerResources, usableRanges, neededStaticPorts, neededPorts);
usedPorts = __ret.usedPorts;
neededPorts = __ret.neededPorts;
neededStaticPorts = __ret.neededStaticPorts;
}
// Using dynamic ports (in addition or instead of fixed ports)
self.logger.debug("portRanges: " + JSON.stringify(offerResources.portRanges));
while (neededPorts > 0 && offerResources.portRanges && offerResources.portRanges.length > 0) {
var range = offerResources.portRanges.splice(0, 1)[0]; // Get first remaining range
self.logger.debug("actualRange: " + JSON.stringify(range));
var availablePorts = (range.end - range.begin + 1);
var willUsePorts = (availablePorts >= neededPorts ? neededPorts : availablePorts);
// Add to usable ranges
usableRanges.push(new mesos.Value.Range(range.begin, range.begin + willUsePorts - 1));
// Add to used ports array
for (var port = range.begin; port <= (range.begin + willUsePorts - 1); port++) {
// Add to used ports
usedPorts.push(port);
// Remove from ports array / reduce available ports by requested task resources
offerResources.ports.splice(offerResources.ports.indexOf(port), 1);
}
// Push range back portRanges if there are ports left
if (availablePorts > willUsePorts) {
offerResources.portRanges.push(new mesos.Value.Range(range.begin + willUsePorts, range.end))
}
// Decrease needed ports number by used ports
neededPorts -= willUsePorts;
}
self.logger.debug("usableRanges: " + JSON.stringify(usableRanges));
var usedPortRanges = [];
var index;
for (index = 0; index < usedPorts.length; index += 1) {
usedPortRanges.push(new mesos.Value.Range(usedPorts[index], usedPorts[index]));
}
// Add to demanded resources
demandedResources.push(
helpers.fixEnums(
new Builder("mesos.Resource").setName("ports")
.setType(mesos.Value.Type.RANGES)
.setRanges(new Builder("mesos.Value.Ranges").setRange(usedPortRanges))
)
);
// Check if task is a container task, and if so, it the networking mode is BRIDGE and there are port mappings defined
if (task.containerInfo) {
// Add the port mappings if needed
Eif (task.containerInfo.docker.network === mesos.ContainerInfo.DockerInfo.Network.BRIDGE && task.portMappings && task.portMappings.length > 0) {
if (usedPorts.length !== task.portMappings.length) {
self.logger.debug("No match between task's port mapping count and the used/requested port count!");
} else {
var portMappings = [],
counter = 0;
// Iterate over given port mappings, and create mapping
task.portMappings.forEach(function (portMapping) {
portMappings.push(new mesos.ContainerInfo.DockerInfo.PortMapping(usedPorts[counter], portMapping.port, portMapping.protocol));
counter++;
});
// Overwrite port mappings
task.containerInfo.docker.port_mappings = portMappings;
}
}
// Add the PORTn environment variables
if (usedPorts.length > 0) {
var portIndex = 0;
// Create environment variables for the used ports (schema is "PORT" appended by port index)
usedPorts.forEach(function (port) {
envVars.push(new Builder("mesos.Environment.Variable").setName("PORT" + portIndex).setValue(port.toString()));
portIndex++;
});
}
}
}
// Add HOST
envVars.push(new Builder("mesos.Environment.Variable").setName("HOST").setValue(offer.url.address.ip));
// Add env var for serial task number
if (self.options.serialNumberedTasks) {
var taskNameArray = task.name.split("-");
envVars.push(new Builder("mesos.Environment.Variable").setName("TASK_" + taskNameArray[0].toUpperCase() + "_SERIAL_NUMBER").setValue(taskNameArray[1]));
}
if (neededPorts > 0 || neededStaticPorts > 0) {
self.logger.error("Couldn't find enough ports!");
} else {
//Check if there are already environment variables set
if (task.commandInfo.environment && task.commandInfo.environment.variables && task.commandInfo.environment.variables.length > 0) {
// Merge the arrays
task.commandInfo.environment.variables = task.commandInfo.environment.variables.concat(envVars);
} else { // Just set them
task.commandInfo.environment = new mesos.Environment(envVars);
}
// Get unique taskId
var taskId = self.options.frameworkName + "." + task.name.replace(/\//, "_") + "." + uuid.v4();
// Set taskId
task.taskId = taskId;
// HTTP health checks
if (task.healthCheck && task.healthCheck.http) {
var healthCheckPort = task.healthCheck.http.port ? task.healthCheck.http.port : usedPorts[0]; // TODO: Check how to make this more reliable
task.mesosHealthCheck = new Builder("mesos.HealthCheck")
.setType(mesos.HealthCheck.Type.HTTP)
.setHttp(new Builder("mesos.HealthCheck.HTTPCheckInfo")
.setScheme(task.healthCheck.http.scheme || "http")
.setPort(healthCheckPort)
.setPath(task.healthCheck.http.path || "/")
.setStatuses(task.healthCheck.http.statuses || [200])
);
self.logger.debug("Http healthCheck" + JSON.stringify(task.mesosHealthCheck));
}
//
task.mesosName = task.name.replace(/\//, "_");
// Remove serial number from mesos task name if not activated (added by default)
if (!self.options.serialNumberedTasks) {
task.mesosName = task.mesosName.replace(/-[0-9]+$/, "");
}
self.logger.debug("Mesos task name: " + task.mesosName + " is using serialNumberedTasks: " + self.options.serialNumberedTasks.toString());
// Push TaskInfo to toLaunch
toLaunch.push(
new Builder("mesos.TaskInfo")
.setName(task.mesosName)
.setTaskId(new mesos.TaskID(taskId))
.setAgentId(offer.agent_id)
.setResources(demandedResources)
.setExecutor((task.executorInfo ? helpers.fixEnums(task.executorInfo) : null))
.setCommand((task.commandInfo ? helpers.fixEnums(task.commandInfo) : null))
.setContainer((task.containerInfo ? helpers.fixEnums(task.containerInfo) : null))
.setHealthCheck((task.mesosHealthCheck ? helpers.fixEnums(task.mesosHealthCheck) : null))
.setLabels((task.labels ? task.labels : null))
);
// Set submit status
task.isSubmitted = true;
// Set network runtime info from offer and used ports
if (!task.runtimeInfo) {
task.runtimeInfo = {};
task.runtimeInfo.agentId = offer.agent_id.value || null;
task.runtimeInfo.state = "TASK_STAGING";
task.runtimeInfo.network = {
"hostname": offer.hostname,
"ip": offer.url.address.ip || null,
"ports": usedPorts
};
} else {
task.runtimeInfo.state = "TASK_STAGING";
task.runtimeInfo.agentId = offer.agent_id.value || null;
task.runtimeInfo.network = {
"hostname": offer.hostname,
"ip": offer.url.address.ip || null,
"ports": usedPorts
};
}
self.logger.debug("task details for taskId " + task.taskId + ": " + JSON.stringify(task));
// Remove from pendingTasks!
self.pendingTasks.splice(self.pendingTasks.indexOf(task), 1);
// Add to launched tasks
self.launchedTasks.push(task);
// Save to ZooKeeper
if (self.options.useZk && self.taskHelper) {
self.taskHelper.saveTask(task);
}
self.logger.debug("launchedTasks length: " + self.launchedTasks.length + "; pendingTask length: " + self.pendingTasks.length);
declinedNoPending = true;
}
self.logger.debug("Offer " + offer.id.value + ": Available resources: " + offerResources.cpus + " - " + offerResources.mem + " - " + offerResources.disk + " - " + offerResources.ports.length)
} else {
self.logger.error("Offer " + offer.id.value + " has no fitting resources left");
}
});
// Only trigger a launch if there's actually something to launch :-)
if (toLaunch.length > 0) {
process.nextTick(function () {
// Set the Operations object
var Operations = new Builder("mesos.Offer.Operation")
.setType(mesos.Offer.Operation.Type.LAUNCH)
.setLaunch(new mesos.Offer.Operation.Launch(toLaunch));
self.logger.debug("Operation before accept: " + JSON.stringify(helpers.fixEnums(Operations)));
// Trigger acceptance
self.accept([offer.id], Operations, null);
});
}
// Decline offer if not used
if (!declinedNoPending) {
process.nextTick(function () {
self.logger.debug("DECLINE: Declining Offer " + offer.id.value);
// Trigger decline
self.decline([offer.id], null);
});
}
});
},
"INVERSE_OFFERS": function (reverseOffers) {
this.logger.debug("INVERSE_OFFERS: " + JSON.stringify(reverseOffers));
},
"UPDATE": function (update) {
var self = this;
self.logger.debug("UPDATE: " + JSON.stringify(update));
function handleUpdate(status) {
self.logger.debug("UPDATE: Got state " + status.state + " for TaskID " + status.task_id.value);
// Check if the state is defined as a restart state
if (self.options.restartStates.indexOf(status.state) > -1) {
self.logger.error("TaskId " + status.task_id.value + " got restartable state: " + status.state);
// Track launchedTasks array index
var foundIndex = 0;
var tempLaunchedTasks = self.launchedTasks.slice();
// Restart task by splicing it from the launchedTasks array, and afterwards putting it in the pendingTasks array after a cleanup
tempLaunchedTasks.forEach(function (task) {
if (status.task_id.value === task.taskId) {
// Check if task was restarted, it means it was already replaced.
if (task.runtimeInfo.restarting) {
// Remove task from launchedTasks array
self.launchedTasks.splice(self.launchedTasks.indexOf(task), 1);
self.logger.debug("TaskId " + status.task_id.value + " was killed and removed from the launchedTasks");
if (self.options.useZk) {
self.taskHelper.deleteTask(status.task_id.value);
}
return;
}
// Splice from launchedTasks if found
var taskToRestart = helpers.cloneDeep(self.launchedTasks.splice(foundIndex, 1)[0]);
self.logger.debug("taskToRestart before cleaning: " + JSON.stringify(taskToRestart));
if (self.options.useZk) {
self.taskHelper.deleteTask(taskToRestart.taskId);
}
// Reset isSubmitted status
taskToRestart.isSubmitted = false;
// Remove old taskId
delete taskToRestart.taskId;
// Remove old runtimeInfo
delete taskToRestart.runtimeInfo;
// Remove old health check (it changes by allocated ports)
delete task.mesosHealthCheck;
// Remove previously set HOST and PORTn environment variables
if (taskToRestart.commandInfo.environment.variables && taskToRestart.commandInfo.environment.variables.length > 0) {
var usableVariables = [];
// Iterate over all environment variables
taskToRestart.commandInfo.environment.variables.forEach(function (variable) {
// Check if variable name contains either HOST or PORT -> Set by this framework when starting a task
Eif (variable.name.match(/^HOST$/g) === null && variable.name.match(/^PORT[0-9]+$/g) === null) {
// Add all non-matching (user-defined) environment variables
usableVariables.push(variable);
}
});
// Remove old variables
delete taskToRestart.commandInfo.environment.variables;
// Add the user-defined variables again
taskToRestart.commandInfo.environment.variables = usableVariables;
}
self.logger.debug("taskToRestart after cleaning: " + JSON.stringify(taskToRestart));
// Restart task by putting it in the pendingTasks array
self.pendingTasks.push(taskToRestart);
} else {
foundIndex++;
}
});
} else {
self.logger.debug("TaskId " + status.task_id.value + " got state: " + status.state);
// Keep track of index
var index = 0;
var match = false;
self.logger.debug("Iterate over launched tasks...");
for (index = 0; index < self.launchedTasks.length; index++) {
var task = self.launchedTasks[index];
if (status.task_id.value === task.taskId) {
self.logger.debug("Matched TaskId " + status.task_id.value);
match = true;
// Check if state is TASK_KILLED and TASK_KILLED is not in restartable states array, same for TASK_FINISHED
if ((self.options.restartStates.indexOf("TASK_KILLED") === -1 && status.state === "TASK_KILLED") || (self.options.restartStates.indexOf("TASK_FINISHED") === -1 && status.state === "TASK_FINISHED") || (task.runtimeInfo.restarting)) {
// Remove task from launchedTasks array
self.launchedTasks.splice(index, 1);
self.logger.debug("TaskId " + status.task_id.value + " was killed and removed from the launchedTasks");
if (self.options.useZk) {
self.taskHelper.deleteTask(status.task_id.value);
}
} else {
var taskStartTime = Date.now();
// Store network info
var network = {};
// Remove old runtime info if present
if (Object.getOwnPropertyNames(task.runtimeInfo).length > 0) {
network = helpers.cloneDeep(task.runtimeInfo.network);
if (!status.executor_id || !status.executor_id.value) {
status.executor_id = {value: task.runtimeInfo.executorId};
}
// Check if we need to emit an event
if (task.runtimeInfo.state === "TASK_STAGING" && status.state === "TASK_RUNNING") {
self.emit("task_launched", task);
}
if (task.runtimeInfo.startTime) {
taskStartTime = task.runtimeInfo.startTime
}
delete task.runtimeInfo;
} else {
self.emit("task_launched", task);
}
// Update task runtime info
task.runtimeInfo = {
agentId: status.agent_id.value,
executorId: status.executor_id.value,
state: status.state,
startTime: taskStartTime,
network: network
};
self.logger.debug("TaskId " + status.task_id.value + " updated task runtime info: " + JSON.stringify(task.runtimeInfo));
// Save task to ZooKeeper
if (self.options.useZk) {
self.taskHelper.saveTask(task);
}
}
}
}
// TODO: Check!
if (!match && index >= self.launchedTasks.length && status.reason === "REASON_RECONCILIATION") {
// Cleaning up unknown tasks
if (self.options.killUnknownTasks && status.state === "TASK_RUNNING") {
self.logger.info("Killing unknown task ID: " + status.task_id.value + " on agent: " + status.agent_id.value);
self.kill(status.task_id.value, status.agent_id.value);
// Cleaning up stale tasks from ZK.
} else if (status.state !== "TASK_RUNNING" && self.options.useZk) {
self.logger.info("Cleaning up an unknown task from ZK: " + status.task_id.value);
self.taskHelper.deleteTask(status.task_id.value);
}
}
}
}
// Handle status update
handleUpdate(update.status);
// Acknowledge update
self.acknowledge(update);
},
"RESCIND": function (offerId) {
this.logger.debug("RESCIND: " + JSON.stringify(offerId));
},
"RESCIND_INVERSE_OFFER": function (offerId) {
this.logger.debug("RESCIND_INVERSE_OFFER: " + JSON.stringify(offerId));
},
"MESSAGE": function (message) {
this.logger.debug("MESSAGE: " + JSON.stringify(message));
},
"FAILURE": function (failure) {
this.logger.debug("FAILURE: " + JSON.stringify(failure));
},
"ERROR": function (error) {
this.logger.debug("ERROR: " + JSON.stringify(error));
},
"HEARTBEAT": function (heartbeat) {
this.logger.debug("HEARTBEAT: " + JSON.stringify(heartbeat));
}
};
|