paramcache

README

ParamCache - A Go SSM Parameter Store Cache

ParamCache is used in AWS Go Lambdas when cold booting to save repeated lookups on subsequent invocations. Assumes SSM / AWS Systems Manager is in the same region as the lambda.

Cache configurable via lambda environment variables:

SSM_CACHE_ENABLE string (default "TRUE")

SSM_CACHE_VERBOSE string (default "FALSE")

SSM_CACHE_TIMEOUT int (default 300 seconds)

Usage

import "github.com/dozyio/paramcache"

...

tableName, err := paramcache.GetParameterStoreValue("dynamodb_table_name")
if err != nil {
	//handle error
}
log.Printf("%s\n", *tableName.Parameter.Value)

Documentation

Index

• func AWSSession(s *session.Session) *session.Session
• func GetParameterStoreValue(param string) (*ssm.GetParameterOutput, error)
• type SSMParameterStoreCache

Functions

func AWSSession

func AWSSession(s *session.Session) *session.Session

AWSSession create AWS Session for reuse

func GetParameterStoreValue

func GetParameterStoreValue(param string) (*ssm.GetParameterOutput, error)

GetParameterStoreValue returns a string, stringlist or securestring from SSM and caches the value if configured to do so.

Types

type SSMParameterStoreCache

type SSMParameterStoreCache struct {
	Value        *ssm.GetParameterOutput
	CacheExpires int64
}

SSMParameterStoreCache setup