terraform/builtin/providers/aws/resource_aws_lambda_functio...

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package aws
import (
"crypto/sha256"
"fmt"
"io/ioutil"
"log"
"strings"
"time"
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"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/lambda"
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"github.com/mitchellh/go-homedir"
"github.com/hashicorp/terraform/helper/schema"
)
func resourceAwsLambdaFunction() *schema.Resource {
return &schema.Resource{
Create: resourceAwsLambdaFunctionCreate,
Read: resourceAwsLambdaFunctionRead,
Update: resourceAwsLambdaFunctionUpdate,
Delete: resourceAwsLambdaFunctionDelete,
Schema: map[string]*schema.Schema{
"filename": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"description": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true, // TODO make this editable
},
"function_name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"handler": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true, // TODO make this editable
},
"memory_size": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Default: 128,
ForceNew: true, // TODO make this editable
},
"role": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true, // TODO make this editable
},
"runtime": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
Default: "nodejs",
},
"timeout": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Default: 3,
ForceNew: true, // TODO make this editable
},
"arn": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"last_modified": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"source_code_hash": &schema.Schema{
Type: schema.TypeString,
Computed: true,
ForceNew: true,
},
},
}
}
// resourceAwsLambdaFunction maps to:
// CreateFunction in the API / SDK
func resourceAwsLambdaFunctionCreate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).lambdaconn
functionName := d.Get("function_name").(string)
iamRole := d.Get("role").(string)
log.Printf("[DEBUG] Creating Lambda Function %s with role %s", functionName, iamRole)
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filename, err := homedir.Expand(d.Get("filename").(string))
if err != nil {
return err
}
zipfile, err := ioutil.ReadFile(filename)
if err != nil {
return err
}
d.Set("source_code_hash", sha256.Sum256(zipfile))
log.Printf("[DEBUG] ")
params := &lambda.CreateFunctionInput{
Code: &lambda.FunctionCode{
ZipFile: zipfile,
},
Description: aws.String(d.Get("description").(string)),
FunctionName: aws.String(functionName),
Handler: aws.String(d.Get("handler").(string)),
MemorySize: aws.Int64(int64(d.Get("memory_size").(int))),
Role: aws.String(iamRole),
Runtime: aws.String(d.Get("runtime").(string)),
Timeout: aws.Int64(int64(d.Get("timeout").(int))),
}
for i := 0; i < 5; i++ {
_, err = conn.CreateFunction(params)
if awsErr, ok := err.(awserr.Error); ok {
// IAM profiles can take ~10 seconds to propagate in AWS:
// http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/iam-roles-for-amazon-ec2.html#launch-instance-with-role-console
// Error creating Lambda function: InvalidParameterValueException: The role defined for the task cannot be assumed by Lambda.
if awsErr.Code() == "InvalidParameterValueException" && strings.Contains(awsErr.Message(), "The role defined for the task cannot be assumed by Lambda.") {
log.Printf("[DEBUG] Invalid IAM Instance Profile referenced, retrying...")
time.Sleep(2 * time.Second)
continue
}
}
break
}
if err != nil {
return fmt.Errorf("Error creating Lambda function: %s", err)
}
d.SetId(d.Get("function_name").(string))
return resourceAwsLambdaFunctionRead(d, meta)
}
// resourceAwsLambdaFunctionRead maps to:
// GetFunction in the API / SDK
func resourceAwsLambdaFunctionRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).lambdaconn
log.Printf("[DEBUG] Fetching Lambda Function: %s", d.Id())
params := &lambda.GetFunctionInput{
FunctionName: aws.String(d.Get("function_name").(string)),
}
getFunctionOutput, err := conn.GetFunction(params)
if err != nil {
return err
}
// getFunctionOutput.Code.Location is a pre-signed URL pointing at the zip
// file that we uploaded when we created the resource. You can use it to
// download the code from AWS. The other part is
// getFunctionOutput.Configuration which holds metadata.
function := getFunctionOutput.Configuration
// TODO error checking / handling on the Set() calls.
d.Set("arn", function.FunctionARN)
d.Set("description", function.Description)
d.Set("handler", function.Handler)
d.Set("memory_size", function.MemorySize)
d.Set("last_modified", function.LastModified)
d.Set("role", function.Role)
d.Set("runtime", function.Runtime)
d.Set("timeout", function.Timeout)
return nil
}
// resourceAwsLambdaFunction maps to:
// DeleteFunction in the API / SDK
func resourceAwsLambdaFunctionDelete(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).lambdaconn
log.Printf("[INFO] Deleting Lambda Function: %s", d.Id())
params := &lambda.DeleteFunctionInput{
FunctionName: aws.String(d.Get("function_name").(string)),
}
_, err := conn.DeleteFunction(params)
if err != nil {
return fmt.Errorf("Error deleting Lambda Function: %s", err)
}
d.SetId("")
return nil
}
// resourceAwsLambdaFunctionUpdate maps to:
// UpdateFunctionCode in the API / SDK
func resourceAwsLambdaFunctionUpdate(d *schema.ResourceData, meta interface{}) error {
// conn := meta.(*AWSClient).lambdaconn
return nil
}