added policy to check domain encryption added or not for elasticsearch

avd_docs/aws/elasticsearch/AVD-AWS-0199/docs.md

@@ -0,0 +1,13 @@
+
+Elasticsearch domain isn't encrypted at rest.
+
+### Impact
+<!-- Add Impact here -->
+
+<!-- DO NOT CHANGE -->
+{{ remediationActions }}
+
+### Links
+- https://docs.aws.amazon.com/elasticsearch-service/latest/developerguide/encryption-at-rest.html
+
+

internal/rules/policies/cloud/policies/aws/elasticsearch/enable_domain_encryption.rego

@@ -0,0 +1,25 @@
+# METADATA
+# title: "Elasticsearch Domain Encryption"
+# description: "Elasticsearch domain isn't encrypted at rest."
+# scope: package
+# schemas:
+# - input: schema.input
+# related_resources:
+# - https://docs.aws.amazon.com/elasticsearch-service/latest/developerguide/encryption-at-rest.html
+# custom:
+#   avd_id: AVD-AWS-0199
+#   provider: aws
+#   service: elasticsearch
+#   severity: HIGH
+#   short_code: enable-domain-encryption
+#   recommended_action: "You should ensure your Elasticsearch data is encrypted at rest to help prevent sensitive information from being read by unauthorised users."
+#   input:
+#     selector:
+#     - type: cloud
+package builtin.aws.elasticsearch.aws0199
+
+deny[res] {
+	domain := input.aws.elasticsearch.domains[_]
+	not domain.atrestencryption.enabled.value
+	res := result.new("Domain does not have at-rest encryption enabled.", domain.atrestencryption.enabled)
+}

internal/rules/policies/cloud/policies/aws/elasticsearch/enable_domain_encryption_test.rego

@@ -0,0 +1,11 @@
+package builtin.aws.elasticsearch.aws0199
+
+test_detects_when_disabled {
+	r := deny with input as {"aws": {"elasticsearch": {"domains": [{"atrestencryption": {"enabled": {"value": false}}}]}}}
+	count(r) == 1
+}
+
+test_when_enabled {
+	r := deny with input as {"aws": {"elasticsearch": {"domains": [{"atrestencryption": {"enabled": {"value": true}}}]}}}
+	count(r) == 0
+}