github.com/zntrio/harp/v2@v2.0.9/pkg/tasks/template/values.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 template
    19  
    20  import (
    21  	"context"
    22  	"encoding/json"
    23  	"fmt"
    24  
    25  	"github.com/zntrio/harp/v2/pkg/tasks"
    26  	tplcmdutil "github.com/zntrio/harp/v2/pkg/template/cmdutil"
    27  )
    28  
    29  // ValueTask implements value object generation task.
    30  type ValueTask struct {
    31  	OutputWriter tasks.WriterProvider
    32  	ValueFiles   []string
    33  	Values       []string
    34  	StringValues []string
    35  	FileValues   []string
    36  }
    37  
    38  // Run the task.
    39  func (t *ValueTask) Run(ctx context.Context) error {
    40  	// Load values
    41  	valueOpts := tplcmdutil.ValueOptions{
    42  		ValueFiles:   t.ValueFiles,
    43  		Values:       t.Values,
    44  		StringValues: t.StringValues,
    45  		FileValues:   t.FileValues,
    46  	}
    47  	values, err := valueOpts.MergeValues()
    48  	if err != nil {
    49  		return fmt.Errorf("unable to process values: %w", err)
    50  	}
    51  
    52  	// Create output writer
    53  	writer, err := t.OutputWriter(ctx)
    54  	if err != nil {
    55  		return fmt.Errorf("unable to create output writer: %w", err)
    56  	}
    57  
    58  	// Write rendered content
    59  	if err := json.NewEncoder(writer).Encode(values); err != nil {
    60  		return fmt.Errorf("unable to dump values as JSON: %w", err)
    61  	}
    62  
    63  	return nil
    64  }