Initial commit for awespottr.

.gitignore

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+/node_modules
+

README.md

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+# awespottr
+## Find the cheapest EC2 spot prices across all regions
+
+Usage:
+
+- `node cli.js <ec2 type>`
+
+- `AWS_PROFILE=awespottr node cli.js g2.8xlarge`
+
+Minimal IAM policy:
+
+```
+{
+    "Version": "2012-10-17",
+    "Statement": [
+        {
+            "Sid": "Stmt1470583998000",
+            "Effect": "Allow",
+            "Action": [
+                "ec2:DescribeAvailabilityZones",
+                "ec2:DescribeRegions",
+                "ec2:DescribeSpotPriceHistory"
+            ],
+            "Resource": [
+                "*"
+            ]
+        }
+    ]
+}
+```
+
+Example output:
+
+```
+Checking spot prices for m4.2xlarge instance type.
+
+AWS Zone                 Hourly Rate
+------------------------ ------------
+eu-west-1b               $0.063000
+eu-central-1a            $0.067000
+eu-central-1b            $0.072700
+ap-northeast-2c          $0.073300
+ap-southeast-2b          $0.078100
+us-west-2c               $0.078100
+ap-southeast-1a          $0.079800
+ap-southeast-1b          $0.081200
+eu-west-1c               $0.086200
+ap-northeast-1a          $0.086600
+us-east-1e               $0.088900
+ap-northeast-1c          $0.090200
+us-west-1c               $0.091600
+us-west-1b               $0.096700
+ap-northeast-2a          $0.096800
+eu-west-1a               $0.099200
+ap-southeast-2a          $0.099600
+ap-southeast-2c          $0.103100
+us-east-1a               $0.178500
+ap-south-1a              $0.292000
+us-west-2b               $0.390700
+ap-south-1b              $0.430000
+us-east-1c               $0.479000
+us-west-2a               $1.000000
+us-east-1d               $1.500000
+
+Cheapest hourly rate for m4.2xlarge is $0.063000 in zone eu-west-1b
+```

cli.js

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+var _ = require('lodash');
+var AWS = require('aws-sdk');
+var chalk = require('chalk');
+var moment = require('moment');
+var program = require('commander');
+
+var ec2Type = false;
+var awsRegions = {};
+var zones = {};
+var lowPrice = false;
+var lowZone = false;
+
+program
+  .version('0.1.0')
+  .usage('[options] <EC2 instance types ...>')
+  .action(function(type) {
+    ec2Type = type;
+  })
+  .parse(process.argv);
+
+console.log('Checking spot prices for ' + ec2Type + ' instance type.\n');
+
+function getRegions() {
+  return new Promise(function(resolve, reject) {
+    var ec2 = new AWS.EC2({apiVersion: '2016-04-01', region: 'us-west-2'});
+    ec2.describeRegions({}, function(err, data) {
+      if (err) {
+        console.log(err, err.stack);
+        return reject(err);
+      }
+
+      var promises = [];
+      if (data && data.Regions) {
+        _.each(data.Regions, function(region) {
+          if (region.RegionName && !awsRegions.hasOwnProperty(region.RegionName)) {
+            awsRegions[region.RegionName] = {};
+            promises.push(getRegionSpots(region.RegionName));
+          }
+        })
+      }
+      return Promise.all(promises).then(resolve);
+    });
+  });
+}
+
+function getRegionSpots(regionName) {
+  return new Promise(function(resolve, reject) {
+    var ec2 = new AWS.EC2({apiVersion: '2016-04-01', region: regionName});
+    var params = {
+      InstanceTypes: [ec2Type],
+      ProductDescriptions: ['Linux/UNIX', 'Linux/UNIX (Amazon VPC)'],
+      StartTime: moment().subtract(4, 'hours').utc().toDate()
+    };
+    ec2.describeSpotPriceHistory(params, function(err, data) {
+      if (err) {
+        console.log(err, err.stack);
+        return reject(err);
+      }
+
+      if (data && data.SpotPriceHistory) {
+        _.each(data.SpotPriceHistory, function(sdata) {
+          if (sdata.SpotPrice && sdata.Timestamp && sdata.AvailabilityZone) {
+            var sdate = moment(sdata.Timestamp);
+            if (!zones.hasOwnProperty(sdata.AvailabilityZone) || zones[sdata.AvailabilityZone].lastDate < sdate) {
+              zones[sdata.AvailabilityZone] = {
+                lastDate: sdate,
+                lastPrice: sdata.SpotPrice,
+                zone: sdata.AvailabilityZone
+              };
+              if (!lowPrice || sdata.SpotPrice < lowPrice) {
+                lowPrice = sdata.SpotPrice;
+                lowZone = sdata.AvailabilityZone;
+              }
+            }
+          }
+        });
+      }
+      resolve();
+    });
+  });
+}
+
+getRegions()
+  .then(function() {
+    console.log(_.padEnd('AWS Zone', 24) + ' ' + _.padEnd('Hourly Rate', 12));
+    console.log(_.pad('', 24, '-') + ' ' + _.pad('', 12, '-'));
+    var sortedZones = _.values(zones);
+    sortedZones = _.sortBy(sortedZones, function(val) { return Number(val.lastPrice); }, 'zone');
+    _.each(sortedZones, function(data) {
+      var msg = _.padEnd(data.zone, 24) + ' ' + _.padEnd('$' + data.lastPrice, 12);
+      if (data.zone === lowZone || data.lastPrice === lowPrice) {
+        msg = chalk.green(msg);
+      } else if (lowPrice * 1.1 >= data.lastPrice) {
+        msg = chalk.yellow(msg);
+      }
+      console.log(msg);
+    });
+    console.log(chalk.green('\nCheapest hourly rate for ' + ec2Type + ' is $' + lowPrice + ' in zone ' + lowZone));
+  })
+  .catch(function(err) {
+    console.log('error', err);
+  });

package.json

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+{
+  "name": "awespottr",
+  "version": "0.1.0",
+  "description": "Find the cheapest EC2 spot prices in any region.",
+  "main": "cli.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "Joe Turgeon <[email protected]>",
+  "license": "MIT",
+  "dependencies": {
+    "aws-sdk": "^2.4.13",
+    "chalk": "^1.1.3",
+    "commander": "^2.9.0",
+    "lodash": "^4.14.1",
+    "moment": "^2.14.1"
+  }
+}