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const debugLib = require("debug");
const info = debugLib("abc4:info");
const debug = debugLib("abc4:aws");
const sdklog = debugLib("abc4:aws-sdk");
const uuidv1 = require("uuid/v1");
const Base64 = require("js-base64").Base64;
const getImage = require("get-ami");
const AWS = require("aws-sdk");
AWS.config.update({ logger: { log: sdklog } });
const { getUserData } = require("../../common/setupScripts");
const { maskSensitiveValues } = require("../../common/util.js");
const { waitForWrapper, setupIAMRole, setupKeyPair, getVPCSetting, cleanUp, cleanUpKeyPair, createEC2Object, createIAMObject, getUserName, getGroupName } = require("./internal.js");
//private functions
/*eslint-disable valid-jsdoc require-jsdoc*/
function getRegion(clusterID) {
const rt = /^abc4_aws_(.*)_.*/.exec(clusterID);
const region = rt[1];
Iif (typeof region !== "string") {
const err = new Error("Invalid cluster id");
err.message = "get region string from id failed";
err.clusterID = clusterID;
err.region = region;
throw err;
}
return region;
}
/**
* Check region value in order and extract it.
* @param {Object} order
* @returns {string} - Region string.
*/
function extractRegion(order) {
Iif (typeof order.region !== "string") {
const err = new Error("Invalid order");
err.message = "Invalid aws region specified";
err.region = order.region;
throw err;
}
const region = order.region.toLowerCase();
delete order.region;
return region;
}
function parseOrder(order) {
const commonOpt = {
os: order.os.toLowerCase(),
shareStorage: order.shareStorage,
batch: order.batch,
runJobOnBatchServer: order.runJobOnBatchServer,
mpi: order.mpi,
compiler: order.compiler,
playbook: order.playbook,
batchSetupScript: order.batchSetupScript,
packages: order.packages
};
const id = order.id;
const pw = order.pw;
const numberOfNodes = order.numNodes;
const headOnlyParam = order.headOnlyParam;
const rootVolume = order.rootVolume;
const publicKey = order.publicKey;
const remaining = JSON.parse(JSON.stringify(order));
delete remaining.provider;
delete remaining.numNodes;
delete remaining.os;
delete remaining.id;
delete remaining.pw;
delete remaining.headOnlyParam;
delete remaining.shareStorage;
delete remaining.rootVolume;
delete remaining.publicKey;
delete remaining.batch;
delete remaining.runJobOnBatchServer;
delete remaining.mpi;
delete remaining.compiler;
delete remaining.playbook;
delete remaining.batchSetupScript;
delete remaining.packages;
return [id, pw, numberOfNodes, headOnlyParam, rootVolume, publicKey, commonOpt, remaining];
}
function onRetry(res) {
Eif (res.error.code === "InvalidParameterValue" && res.error.message.endsWith("Invalid IAM Instance Profile name")) {
debug(`IAM instance profile is not available, retrying ${res.retryCount}`);
res.error.retryable = true;
res.error.retryDelay = 3000;
} else if (res.error.code === "InsufficientInstanceCapacity") {
info("can not get sufficient instace in specified AZ");
res.error.retryable = false;
} else {
debug(`retring due to ${res.error}`);
}
}
//public functions
/*eslint-enable valid-jsdoc require-jsdoc*/
/**
* Create cluster on AWS.
* @param {Order}
* @param {Function} debug - Call back routine for log message.
* @returns {Cluster}
*/
async function awsCreate(argOrder) {
//setLogger(argOrder);
const order = JSON.parse(JSON.stringify(argOrder));
debug("create cluster on aws:", JSON.stringify(order, maskSensitiveValues, 2));
const region = extractRegion(order);
//generate uuid and create cluster instance object (return value of this function)
const clusterID = `abc4_aws_${region}_${uuidv1()}`;
const cluster = {
clusterID
};
const [accessKeyId, secretAccessKey, numberOfNodes, headOnlyParam, rootVolume, PublicKeyMaterial, commonOpt, remaining] = parseOrder(order);
//instanciate service objects
const ec2 = createEC2Object(region, accessKeyId, secretAccessKey);
const iam = createIAMObject(region, accessKeyId, secretAccessKey);
//get ami id
const image = await getImage(commonOpt.os, region, accessKeyId, secretAccessKey);
const ImageId = image.ImageId;
//this value does not changed!!
const numHeadNode = 1;
const numChildNodes = numberOfNodes - numHeadNode;
//get root device setting of AMI
const rootDevice = image.BlockDeviceMappings.find((e)=>{
return e.DeviceName === "/dev/sda1" || e.DeviceName === "/dev/xvda";
});
debug("original:", rootDevice);
//remove unused props
delete rootDevice.Ebs.SnapshotId;
delete rootDevice.Ebs.Encrypted;
rootDevice.Ebs.DeleteOnTermination = true;
const expandRootVolume = rootVolume > rootDevice.Ebs.VolumeSize;
rootDevice.Ebs.VolumeSize = expandRootVolume ? rootVolume : rootDevice.Ebs.VolumeSize;
const headTag = [{
ResourceType: "instance",
Tags: [
{ Key: "abc4", Value: `${(new Date()).toTimeString()}` },
{ Key: "abc4ClusterId", Value: clusterID }
]
}];
const childTag = JSON.parse(JSON.stringify(headTag));
headTag[0].Tags.push({ Key: "abc4Class", Value: "Head" });
childTag[0].Tags.push({ Key: "abc4Class", Value: "Child" });
commonOpt.createIpList = `aws ec2 describe-instances --output=text --region=${region}\
--filter "Name=tag:abc4ClusterId,Values=${clusterID}"\
--query 'Reservations[].Instances[].[PrivateIpAddress]'`;
commonOpt.createHostList = `aws ec2 describe-instances --output=text --region=${region}\
--filter "Name=tag:abc4ClusterId,Values=${clusterID}"\
--query 'Reservations[].Instances[].[PrivateDnsName]' |sed 's/^\\([^\\.]*\\).*$/\\1/'`;
commonOpt.getHeadHostname = `aws ec2 describe-instances --output=text --region=${region}\
--filters "Name=tag:abc4ClusterId,Values=${clusterID}" "Name=tag:abc4Class,Values=Head"\
--query 'Reservations[].Instances[].[PrivateDnsName]' |sed 's/^\\([^\\.]*\\).*$/\\1/'`;
cluster.user = getUserName(commonOpt.os);
commonOpt.user = cluster.user;
commonOpt.group = getGroupName(commonOpt.os);
Eif (!Array.isArray(commonOpt.packages)) {
commonOpt.packages = [];
}
commonOpt.packages.push("awscli");
const headUserDataObject = getUserData(commonOpt);
const childUserDataObject = getUserData(commonOpt, true);
let headInstanceIds = [];
let childInstanceIds = [];
try {
//create KeyPair, IAM Role and VPC
const key = await setupKeyPair(ec2, clusterID, PublicKeyMaterial);
Eif (key) {
cluster.privateKey = key;
}
const InstanceProfileArn = await setupIAMRole(iam, clusterID);
const [SubnetId, securityGroupId] = await getVPCSetting(remaining, ec2, clusterID);
const headParam = Object.assign(JSON.parse(JSON.stringify(remaining)), headOnlyParam, {
ImageId,
IamInstanceProfile: { Arn: InstanceProfileArn, Name: clusterID },
TagSpecifications: headTag,
SubnetId,
SecurityGroupIds: securityGroupId,
MinCount: numHeadNode,
MaxCount: numHeadNode,
KeyName: clusterID,
BlockDeviceMappings: [
rootDevice
],
UserData: Base64.encode(`#cloud-config\n ${JSON.stringify(headUserDataObject)}`)
});
const childParam = Object.assign(remaining, {
ImageId,
IamInstanceProfile: { Arn: InstanceProfileArn, Name: clusterID },
TagSpecifications: childTag,
SubnetId,
MinCount: numChildNodes,
MaxCount: numChildNodes,
BlockDeviceMappings: [
rootDevice
],
UserData: Base64.encode(`#cloud-config\n ${JSON.stringify(childUserDataObject)}`)
});
const promises = [];
info("create head node");
promises.push(
ec2.runInstances(headParam)
.on("retry", onRetry)
.promise()
);
Eif (numChildNodes > 0) {
info(`create ${numChildNodes} child nodes`);
promises.push(
ec2.runInstances(childParam)
.on("retry", onRetry)
.promise()
);
}
const results = await Promise.all(promises);
Iif (results[0].Instances.length !== numHeadNode) {
const err = new Error("head node creation failed");
return err;
}
headInstanceIds = results[0].Instances.map((e)=>{
return e.InstanceId;
});
debug(headInstanceIds);
Eif (numChildNodes > 0) {
Iif (results[1].Instances.length !== numChildNodes) {
const err = new Error("child node creation failed");
return err;
}
childInstanceIds = results[1].Instances.map((e)=>{
return e.InstanceId;
});
debug(childInstanceIds);
}
} catch (err) {
info("fatal error occurred during cluster creation process");
info("clean up partitially created resources and exit");
try {
await awsDestroy(clusterID, accessKeyId, secretAccessKey);
} catch (errCleanupPhase) {
err.cleanupPhase = errCleanupPhase;
}
throw err;
}
//
//wait for all instance is available
//
await waitForWrapper(ec2, "instanceExists", { InstanceIds: headInstanceIds.concat(childInstanceIds) });
info("bootup process started");
await waitForWrapper(ec2, "instanceRunning", { InstanceIds: headInstanceIds.concat(childInstanceIds) });
info("OS ready");
await waitForWrapper(ec2, "instanceStatusOk", { InstanceIds: headInstanceIds.concat(childInstanceIds) });
info("system check done");
//gather info to return
const instances = await awsListInstances(clusterID, order);
cluster.headNodes = instances
.filter((e)=>{
return headInstanceIds.includes(e.InstanceId);
})
.map((e)=>{
return {
publicNetwork: { IP: e.PublicIpAddress, hostname: e.PublicDnsName },
privateNetwork: { IP: e.PrivateIpAddress, hostname: e.PrivateDnsName }
};
});
cluster.childNodes = instances
.filter((e)=>{
return !headInstanceIds.includes(e.InstanceId);
})
.map((e)=>{
return {
privateNetwork: { IP: e.PrivateIpAddress, hostname: e.PrivateDnsName }
};
});
info("clean up temporary resouces");
await cleanUpKeyPair(ec2, clusterID);
Iif (accessKeyId) {
cluster.id = accessKeyId;
}
Iif (secretAccessKey) {
cluster.pw = secretAccessKey;
}
debug(JSON.stringify(cluster, maskSensitiveValues, 2));
return cluster;
}
/**
* Destroy specified cluster.
*/
async function awsDestroy(clusterID, opt) {
//setLogger(opt);
info("destroy cluster on aws:", clusterID);
const accessKeyId = opt.id;
const secretAccessKey = opt.pw;
const instances = await awsListInstances(clusterID, opt);
const region = getRegion(clusterID);
const ec2 = createEC2Object(region, accessKeyId, secretAccessKey);
const InstanceIds = instances.map((e)=>{
return e.InstanceId;
});
Eif (InstanceIds.length > 0) {
debug("destroy instances", InstanceIds);
await ec2.terminateInstances({ InstanceIds }).promise();
await waitForWrapper(ec2, "instanceTerminated", { InstanceIds });
}
const iam = createIAMObject(region, accessKeyId, secretAccessKey);
await cleanUp(ec2, iam, clusterID);
return true;
}
async function getInstances(ec2, Filters) {
const result = await ec2.describeInstances({ Filters }).promise();
const rt = result.Reservations
.reduce((a, c)=>{
return a.concat(c.Instances);
}, []);
let NextToken = result.NextToken;
while (NextToken) {
const result2 = await ec2.describeInstances({ Filters, NextToken }).promise();
NextToken = result2.NextToken;
Array.prototype.push.apply(rt, result2.Reservations
.reduce((a, c)=>{
return a.concat(c.Instances);
}, []));
}
return rt;
}
async function getClusterInstances(clusterID, accessKeyId, secretAccessKey) {
let region;
try {
region = getRegion(clusterID);
} catch (err) {
return getAllInstances(accessKeyId, secretAccessKey);
}
const ec2 = createEC2Object(region, accessKeyId, secretAccessKey);
const Filters = [
{ Name: "instance-state-name", Values: ["pending", "running"] },
{ Name: "tag:abc4ClusterId", Values: [clusterID] }
];
return getInstances(ec2, Filters);
}
/**
* Return all instances which has abc4ClusterId tag.
*/
async function getAllInstances(accessKeyId, secretAccessKey) {
const ec2 = createEC2Object(null, accessKeyId, secretAccessKey);
const { Regions } = await ec2.describeRegions.promise();
debug("regions:", Regions);
const Filters = [{ Name: "tag-key", Values: ["abc4ClusterId"] }];
const rt = await Regions.map((e)=>{
ec2.endpoint = e.Endpoint;
return getInstances(ec2, Filters);
});
return rt.reduce((acc, val)=>{
return acc.concat(val);
}, []);
}
/**
* List up instances in the specified cluster.
*/
async function awsListInstances(clusterID, opt) {
//setLogger(opt);
debug("list up cluster on aws:", clusterID);
const accessKeyId = opt.id;
const secretAccessKey = opt.pw;
const instances = await getClusterInstances(clusterID, accessKeyId, secretAccessKey);
info(`${instances.length} node found`);
debug(instances);
return instances;
}
module.exports = {
getImage,
awsCreate,
awsDestroy,
awsListInstances
};
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