github.com/zntrio/harp/v2@v2.0.9/pkg/bundle/ruleset/reader.go (about)

     1  // Licensed to Elasticsearch B.V. under one or more contributor
     2  // license agreements. See the NOTICE file distributed with
     3  // this work for additional information regarding copyright
     4  // ownership. Elasticsearch B.V. licenses this file to you under
     5  // the Apache License, Version 2.0 (the "License"); you may
     6  // not use this file except in compliance with the License.
     7  // You may obtain a copy of the License at
     8  //
     9  //     http://www.apache.org/licenses/LICENSE-2.0
    10  //
    11  // Unless required by applicable law or agreed to in writing,
    12  // software distributed under the License is distributed on an
    13  // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    14  // KIND, either express or implied.  See the License for the
    15  // specific language governing permissions and limitations
    16  // under the License.
    17  
    18  package ruleset
    19  
    20  import (
    21  	"fmt"
    22  	"io"
    23  
    24  	"google.golang.org/protobuf/encoding/protojson"
    25  
    26  	bundlev1 "github.com/zntrio/harp/v2/api/gen/go/harp/bundle/v1"
    27  	"github.com/zntrio/harp/v2/pkg/sdk/convert"
    28  	"github.com/zntrio/harp/v2/pkg/sdk/types"
    29  )
    30  
    31  // YAML a given reader in order to extract a BundlePatch sepcification.
    32  func YAML(r io.Reader) (*bundlev1.RuleSet, error) {
    33  	// Check arguments
    34  	if types.IsNil(r) {
    35  		return nil, fmt.Errorf("reader is nil")
    36  	}
    37  
    38  	// Drain the reader
    39  	jsonReader, err := convert.YAMLtoJSON(r)
    40  	if err != nil {
    41  		return nil, fmt.Errorf("unable to parse input as BundlePatch: %w", err)
    42  	}
    43  
    44  	// Drain reader
    45  	jsonData, err := io.ReadAll(jsonReader)
    46  	if err != nil {
    47  		return nil, fmt.Errorf("unable to drain all json reader content: %w", err)
    48  	}
    49  
    50  	// Initialize empty definition object
    51  	def := bundlev1.RuleSet{}
    52  	def.Reset()
    53  
    54  	// Deserialize JSON with JSONPB wrapper
    55  	if err := protojson.Unmarshal(jsonData, &def); err != nil {
    56  		return nil, fmt.Errorf("unable to decode spec as json: %w", err)
    57  	}
    58  
    59  	// Validate spec
    60  	if err := Validate(&def); err != nil {
    61  		return nil, fmt.Errorf("unable to validate descriptor: %w", err)
    62  	}
    63  
    64  	// No error
    65  	return &def, nil
    66  }