[processor/transform] Add ContextStatements config

processor/transformprocessor/internal/common/config.go

@@ -0,0 +1,28 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package common // import "github.com/open-telemetry/opentelemetry-collector-contrib/processor/transformprocessor/internal/common"
+
+const (
+	Resource  string = "resource"
+	Scope     string = "scope"
+	Trace     string = "trace"
+	DataPoint string = "datapoint"
+	Log       string = "log"
+)
+
+type ContextStatements struct {
+	Context    string   `mapstructure:"context"`
+	Statements []string `mapstructure:"statements"`
+}

processor/transformprocessor/internal/common/functions.go

@@ -15,6 +15,8 @@
 package common // import "github.com/open-telemetry/opentelemetry-collector-contrib/processor/transformprocessor/internal/common"
 
 import (
+	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/ottl/contexts/ottlresource"
+	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/ottl/contexts/ottlscope"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/ottl/ottlfuncs"
 )
 
@@ -38,3 +40,11 @@ func Functions[K any]() map[string]interface{} {
 		"delete_matching_keys": ottlfuncs.DeleteMatchingKeys[K],
 	}
 }
+
+func ResourceFunctions() map[string]interface{} {
+	return Functions[ottlresource.TransformContext]()
+}
+
+func ScopeFunctions() map[string]interface{} {
+	return Functions[ottlscope.TransformContext]()
+}