li

.gitignore

@@ -0,0 +1,113 @@
+
+# Created by https://www.gitignore.io/api/go,macos,intellij+all
+
+### Go ###
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+### Intellij+all ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff:
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/dictionaries
+
+# Sensitive or high-churn files:
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.xml
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+
+# Gradle:
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# CMake
+cmake-build-debug/
+
+# Mongo Explorer plugin:
+.idea/**/mongoSettings.xml
+
+## File-based project format:
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Ruby plugin and RubyMine
+/.rakeTasks
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+### Intellij+all Patch ###
+# Ignores the whole .idea folder and all .iml files
+# See https://github.com/joeblau/gitignore.io/issues/186 and https://github.com/joeblau/gitignore.io/issues/360
+
+.idea/
+
+# Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-249601023
+
+*.iml
+modules.xml
+.idea/misc.xml
+*.ipr
+
+### macOS ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+
+# End of https://www.gitignore.io/api/go,macos,intellij+all

README.md

@@ -1,2 +1,29 @@
-# di
-di - quickly describe instances in EC2
+# li
+li - Like `ls` but for EC2 instances
+
+## Usage 
+
+```
+-a, --adress    show IP adresses
+-d, --details   show all information
+-h, --help      show help
+-i, --id        show instance-ID
+-s, --status    show instance status
+-t, --type      show instance type
+-z, --zone      show availability-zone
+```
+
+## Examples
+
+IP Address only
+```
+~> li -a redis sentinel
+Redis Sentinel   165.91.65.2
+```
+
+IP Address, instance status and availability-zone
+```
+~> li -asz redis sentinel
+Redis Sentinel   165.91.65.2   running   us-west-1a
+
+```

main.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"fmt"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/ec2"
+	flag "github.com/spf13/pflag"
+	"os"
+	"strings"
+	"text/tabwriter"
+)
+
+func main() {
+	ip := flag.BoolP("adress", "a", false, "show IP adresses")
+	id := flag.BoolP("id", "i", false, "show instance-ID")
+	status := flag.BoolP("status", "s", false, "show instance status")
+	instanceType := flag.BoolP("type", "t", false, "show instance type")
+	zone := flag.BoolP("zone", "z", false, "show availability-zone")
+	help := flag.BoolP("help", "h", false, "show help")
+	detailed := flag.BoolP("details", "d", false, "show all information")
+	flag.Parse()
+
+	if *help {
+		flag.PrintDefaults()
+		os.Exit(0)
+	}
+
+	sess := session.Must(session.NewSessionWithOptions(session.Options{
+		SharedConfigState: session.SharedConfigEnable,
+	}))
+
+	ec2Svc := ec2.New(sess)
+
+	result, err := ec2Svc.DescribeInstances(nil)
+	if err != nil {
+		fmt.Printf("Error", err)
+		os.Exit(1)
+	}
+
+	query := strings.Join(flag.Args(), " ")
+	b := tabwriter.NewWriter(os.Stdout, 0, 0, 3, ' ', 0)
+
+	for _, r := range result.Reservations {
+		for _, i := range r.Instances {
+			for _, t := range i.Tags {
+				if *t.Key == "Name" && matches(*t.Value, query) {
+					s := *t.Value
+
+					if *ip || *detailed {
+						s = s + "\t" + *i.PrivateIpAddress
+					}
+
+					if *id || *detailed {
+						s = s + "\t" + *i.InstanceId
+					}
+
+					if *status || *detailed {
+						s = s + "\t" + *i.State.Name
+					}
+
+					if *instanceType || *detailed {
+						s = s + "\t" + *i.InstanceType
+					}
+
+					if *zone || *detailed {
+						s = s + "\t" + *i.Placement.AvailabilityZone
+					}
+
+					fmt.Fprintln(b, s)
+				}
+			}
+		}
+	}
+	b.Flush()
+}
+
+func matches(value string, query string) bool {
+	if query == "" {
+		return true
+	}
+
+	l, q := strings.ToLower(value), strings.ToLower(query)
+	if strings.Contains(l, q) {
+		return true
+	}
+
+	return false
+}