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Aws parameter store url #7

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Aws parameter store url #7

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2c853da
adding optional aws parameter store lookup for DB URL
divideandconquer Jan 22, 2018
72257a4
Adding better error handling for parameter store access
divideandconquer Jan 22, 2018
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27 changes: 26 additions & 1 deletion main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ import (
"time"

"github.com/fatih/color"
"github.com/healthimation/go-aws-config/src/awsconfig"
"github.com/turbine/migrate/driver"
"github.com/turbine/migrate/file"
"github.com/turbine/migrate/migrate"
Expand All @@ -22,6 +23,9 @@ var url = flag.String("url", "", "")
var migrationsPath = flag.String("path", "", "")
var version = flag.Bool("version", false, "Show migrate version")
var transactionType = flag.String("txn", "PerFile", "")
var environment = flag.String("env", "", "The environment you're running in")
var service = flag.String("service", "", "The service's name (combined with env to form AWS parameter store key \"/env/service/urlkey\")")
var dbURLKey = flag.String("urlkey", "DB_URL", "")

func main() {
flag.Parse()
Expand All @@ -42,6 +46,23 @@ func main() {
os.Exit(1)
}

// check AWS parameter for db URL
if len(*url) == 0 && len(*environment) > 0 && len(*service) > 0 {
conf := awsconfig.NewAWSLoader(*environment, *service)
err := conf.Initialize()
if err != nil {
fmt.Printf("Could not pull AWS parameter store configuration: %s\n", err.Error())
os.Exit(1)
}
dbURLby, err := conf.Get(*dbURLKey)
if err != nil || len(dbURLby) == 0 {
fmt.Printf("AWS parameter store key /%s/%s/%s was missing or not parsable\n", *environment, *service, *dbURLKey)
os.Exit(1)
}
dbURL := string(dbURLby)
url = &dbURL
}

switch command {
case "create":
verifyMigrationsPath(*migrationsPath)
Expand Down Expand Up @@ -224,7 +245,7 @@ func printTimer() {

func helpCmd() {
os.Stderr.WriteString(
`usage: migrate [-path=<path>] -url=<url> <command> [<args>]
`usage: migrate [-path=<path>] [-url=<url>] [-env=<environment> -service=<serviceName> [-urlkey=<urlkey>]] <command> [<args>]

Commands:
create <name> Create a new migration
Expand All @@ -238,5 +259,9 @@ Commands:
help Show this help

'-path' defaults to current working directory.
'-url' or '-env' and '-service' are required.
If you provide '-env' and '-service' the app will look up the '-urlkey' in AWS parameter store as '/env/service/urlkey'
You will need to provide a standard AWS credential provider to use the '-env' and '-service' parameters.
'-urlkey' defaults to DB_URL
`)
}