github.com/jonsyu1/godel@v0.0.0-20171017211503-64567a0cf169/apps/distgo/cmd/docker/products.go (about)

     1  // Copyright 2016 Palantir Technologies, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package docker
    16  
    17  import (
    18  	"sort"
    19  
    20  	"github.com/pkg/errors"
    21  
    22  	"github.com/palantir/godel/apps/distgo/params"
    23  )
    24  
    25  func productsToDistAndBuildImage(
    26  	products []string,
    27  	cfg params.Project,
    28  ) (
    29  	productsToDist []string,
    30  	productsToBuildImage []string,
    31  	err error,
    32  ) {
    33  	if len(products) == 0 {
    34  		for product := range cfg.FilteredProducts() {
    35  			products = append(products, product)
    36  		}
    37  	}
    38  	sort.Strings(products)
    39  	if err := validateProducts(products, cfg); err != nil {
    40  		return nil, nil, err
    41  	}
    42  
    43  	visited := make(map[string]struct{})
    44  	distProducts := make(map[string]struct{})
    45  	imageProducts := make(map[string]struct{})
    46  	productQueue := make([]string, len(products))
    47  	copy(productQueue, products)
    48  	for len(productQueue) > 0 {
    49  		productName := productQueue[0]
    50  		productQueue = productQueue[1:]
    51  		visited[productName] = struct{}{}
    52  		productSpec := cfg.Products[productName]
    53  		if len(productSpec.DockerImages) > 0 {
    54  			imageProducts[productName] = struct{}{}
    55  		}
    56  		for _, image := range productSpec.DockerImages {
    57  			for _, dep := range image.Deps {
    58  				if isDist(dep.Type) {
    59  					distProducts[productName] = struct{}{}
    60  				}
    61  				if dep.Type == params.DockerDepDocker {
    62  					// has a docker image dependency. Add to product queue if not visited
    63  					if _, ok := visited[dep.Product]; ok {
    64  						continue
    65  					}
    66  					productQueue = append(productQueue, dep.Product)
    67  				}
    68  			}
    69  		}
    70  	}
    71  	return setToSlice(distProducts), setToSlice(imageProducts), nil
    72  }
    73  
    74  func validateProducts(products []string, cfg params.Project) error {
    75  	var unknownProducts []string
    76  	for _, product := range products {
    77  		if _, ok := cfg.Products[product]; !ok {
    78  			unknownProducts = append(unknownProducts, product)
    79  		}
    80  	}
    81  	sort.Strings(unknownProducts)
    82  	if len(unknownProducts) != 0 {
    83  		var filteredProducts []string
    84  		for product := range cfg.FilteredProducts() {
    85  			filteredProducts = append(filteredProducts, product)
    86  		}
    87  		sort.Strings(filteredProducts)
    88  		return errors.Errorf(
    89  			"Invalid products: %v. Valid products are: %v",
    90  			unknownProducts,
    91  			filteredProducts,
    92  		)
    93  	}
    94  	return nil
    95  }
    96  
    97  func isDist(dep params.DockerDepType) bool {
    98  	switch dep {
    99  	case params.DockerDepSLS, params.DockerDepBin, params.DockerDepRPM:
   100  		return true
   101  	default:
   102  		return false
   103  	}
   104  }
   105  
   106  func setToSlice(s map[string]struct{}) []string {
   107  	var result []string
   108  	for item := range s {
   109  		result = append(result, item)
   110  	}
   111  	sort.Strings(result)
   112  	return result
   113  }