handle curve_types to []curve_types conversion in beat es config

changelog/fragments/1766011716-handle-curve_types-to-[]curve_types-conversion-for-elasticsearch-config-translation.yaml

@@ -0,0 +1,47 @@
+# REQUIRED
+# Kind can be one of:
+# - breaking-change: a change to previously-documented behavior
+# - deprecation: functionality that is being removed in a later release
+# - bug-fix: fixes a problem in a previous version
+# - enhancement: extends functionality but does not break or fix existing behavior
+# - feature: new functionality
+# - known-issue: problems that we are aware of in a given version
+# - security: impacts on the security of a product or a user’s deployment.
+# - upgrade: important information for someone upgrading from a prior version
+# - other: does not fit into any of the other categories
+kind: bug-fix
+
+# REQUIRED for all kinds
+# Change summary; a 80ish characters long description of the change.
+summary: handle curve_types to []curve_types conversion for elasticsearch config translation
+
+# REQUIRED for breaking-change, deprecation, known-issue
+# Long description; in case the summary is not enough to describe the change
+# this field accommodate a description without length limits.
+# description:
+
+# REQUIRED for breaking-change, deprecation, known-issue
+# impact:
+
+# REQUIRED for breaking-change, deprecation, known-issue
+# action:
+
+# REQUIRED for all kinds
+# Affected component; usually one of "elastic-agent", "fleet-server", "filebeat", "metricbeat", "auditbeat", "all", etc.
+component: elastic-agent
+
+# AUTOMATED
+# OPTIONAL to manually add other PR URLs
+# PR URL: A link the PR that added the changeset.
+# If not present is automatically filled by the tooling finding the PR where this changelog fragment has been added.
+# NOTE: the tooling supports backports, so it's able to fill the original PR number instead of the backport PR number.
+# Please provide it if you are adding a fragment for a different PR.
+# pr: https://github.com/owner/repo/1234
+pr: https://github.com/elastic/elastic-agent/pull/11892
+
+# AUTOMATED
+# OPTIONAL to manually add other issue URLs
+# Issue URL; optional; the GitHub issue related to this changeset (either closes or is part of).
+# If not present is automatically filled by the tooling with the issue linked to the PR number.
+# issue: https://github.com/owner/repo/1234
+issue: https://github.com/elastic/elastic-agent/issues/11776

internal/pkg/otel/translate/output_elasticsearch.go

@@ -300,6 +300,12 @@ func cfgDecodeHookFunc() mapstructure.DecodeHookFunc {
 				return nil, fmt.Errorf("failed parsing ssl supported_protocols: %w", err)
 			}
 			return []tlscommon.TLSVersion{tlsVersion}, nil
+		case t == reflect.TypeOf([]tlscommon.TLSCurveType{tlscommon.TLSCurveType(0)}):
+			tlsCurveType := tlscommon.TLSCurveType(0)
+			if err := tlsCurveType.Unpack(data); err != nil {
+				return nil, fmt.Errorf("failed parsing ssl curve_types: %w", err)
+			}
+			return []tlscommon.TLSCurveType{tlsCurveType}, nil
 		default:
 			return data, nil
 		}

internal/pkg/otel/translate/output_elasticsearch_test.go

@@ -181,7 +181,7 @@ api_key: "TiNAGG4BaaMdaH1tRfuU:KnR6yE41RrSowb0kQ0HWoA"
 ssl.certificate_authorities: "/not/a/real/path/ca.pem"
 ssl.supported_protocols: "TLSv1.3"
 ssl.cipher_suites: "ECDHE-ECDSA-AES-256-CBC-SHA"
-
+ssl.curve_types: "P-256"
 `
 
 		OTelCfg := `