Add aws pipeline setup

1 files changed, 72 insertions, 0 deletions

diff --git a/pipelineaws/main.go b/pipelineaws/main.go
new file mode 100644
index 0000000..26f1088
--- /dev/null
+++ b/pipelineaws/main.go
@@ -0,0 +1,72 @@
+package main
+
+import (
+	"log"
+	"os"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/s3"
+	"github.com/aws/aws-sdk-go/service/sqs"
+)
+
+func main() {
+	if len(os.Args) != 1 {
+		log.Fatal("Usage: pipelineaws\n\nSets up necessary S3 buckets and SQS queues for our AWS pipeline\n")
+	}
+
+	sess, err := session.NewSession(&aws.Config{
+		Region: aws.String("eu-west-2"),
+	})
+	if err != nil {
+		log.Fatalf("Error: failed to set up aws session: %v\n", err)
+	}
+	s3svc := s3.New(sess)
+	sqssvc := sqs.New(sess)
+
+	prefix := "rescribe"
+	buckets := []string{"inprogress", "done"}
+	queues := []string{"preprocess", "ocr", "analyse"}
+
+	for _, bucket := range buckets {
+		bname := prefix + bucket
+		log.Printf("Creating bucket %s\n", bname)
+		_, err = s3svc.CreateBucket(&s3.CreateBucketInput{
+			Bucket: aws.String(bname),
+		})
+		if err != nil {
+			aerr, ok := err.(awserr.Error)
+			if ok && (aerr.Code() == s3.ErrCodeBucketAlreadyExists || aerr.Code() == s3.ErrCodeBucketAlreadyOwnedByYou) {
+				log.Printf("Bucket %s already exists\n", bname)
+			} else {
+				log.Fatalf("Error creating bucket %s: %v\n", bname, err)
+			}
+		}
+	}
+
+	for _, queue := range queues {
+		qname := prefix + queue
+		log.Printf("Creating queue %s\n", qname)
+		_, err = sqssvc.CreateQueue(&sqs.CreateQueueInput{
+			QueueName: aws.String(qname),
+			Attributes: map[string]*string{
+				"VisibilityTimeout": aws.String("120"), // 2 minutes
+				"MessageRetentionPeriod": aws.String("1209600"), // 14 days; max allowed by sqs
+				"ReceiveMessageWaitTimeSeconds": aws.String("20"),
+			},
+		})
+		if err != nil {
+			aerr, ok := err.(awserr.Error)
+			// Note the QueueAlreadyExists code is only emitted if an existing queue
+			// has different attributes than the one that was being created. SQS just
+			// quietly ignores the CreateQueue request if it is identical to an
+			// existing queue.
+			if ok && aerr.Code() == sqs.ErrCodeQueueNameExists {
+				log.Fatalf("Error: Queue %s already exists but has different attributes\n", qname)
+			} else {
+				log.Fatalf("Error creating queue %s: %v\n", qname, err)
+			}
+		}
+	}
+}