Mercurial > gemma
annotate pkg/soap/validate.go @ 3705:7006b92c0334
Handle updates (vs. historized and new versions) separately.
We need this distinction as updated data currently can not be
reviewed. More precisely: it can not be declined after review, as the
old data is updated in place.
The current exclusion from the review is a workaround and not meant to
be the final solution. Note that there are additional minor problems,
like the fact that the updated data is not counted as changed data for
the import.
author | Sascha Wilde <wilde@intevation.de> |
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date | Wed, 19 Jun 2019 17:00:08 +0200 |
parents | bd09d6ad4c14 |
children | 31973f6f5cca |
rev | line source |
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2181
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1 // This is Free Software under GNU Affero General Public License v >= 3.0 |
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2 // without warranty, see README.md and license for details. |
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3 // |
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4 // SPDX-License-Identifier: AGPL-3.0-or-later |
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5 // License-Filename: LICENSES/AGPL-3.0.txt |
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6 // |
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7 // Copyright (C) 2018 by via donau |
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH |
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9 // Software engineering by Intevation GmbH |
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10 // |
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11 // Author(s): |
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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13 |
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14 package soap |
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15 |
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16 import ( |
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17 "bytes" |
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18 "encoding/xml" |
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19 "fmt" |
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20 "io" |
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21 "io/ioutil" |
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22 "os" |
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23 "os/exec" |
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24 "path/filepath" |
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25 "strings" |
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26 |
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27 "golang.org/x/net/html/charset" |
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28 |
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29 "gemma.intevation.de/gemma/pkg/config" |
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30 ) |
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31 |
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32 const linter = "xmllint" |
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33 |
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34 type ( |
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35 ValidationError string |
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36 foundError string |
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37 ) |
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38 |
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39 func (ef foundError) Error() string { |
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40 return string(ef) |
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41 } |
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42 |
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43 func (ve ValidationError) Error() string { |
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44 return string(ve) |
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45 } |
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46 |
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47 func FindSchema(name string) (string, error) { |
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48 name = strings.ToLower(name) |
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49 config.WaitReady() |
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50 for _, root := range filepath.SplitList(config.SchemaDirs()) { |
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51 err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error { |
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52 if err != nil { |
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53 return err |
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54 } |
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55 if info == nil { |
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56 return nil |
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57 } |
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58 if info.Mode().IsRegular() && strings.ToLower(info.Name()) == name { |
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59 return foundError(path) |
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60 } |
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61 return nil |
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62 }) |
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63 if path, ok := err.(foundError); ok { |
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64 return string(path), nil |
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65 } |
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66 if err != nil { |
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67 return "", err |
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68 } |
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69 } |
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70 return "", nil |
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71 } |
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72 |
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73 func ValidateFile(fname, schema string, dst interface{}) error { |
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74 f, err := os.Open(fname) |
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75 if err != nil { |
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76 return err |
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77 } |
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78 defer f.Close() |
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79 return Validate(f, schema, dst) |
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80 } |
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81 |
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82 func Validate(r io.Reader, schema string, dst interface{}) error { |
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83 schemaPath, err := FindSchema(schema) |
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84 if err != nil { |
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85 return err |
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86 } |
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87 if schemaPath == "" { |
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88 return fmt.Errorf("no schema file '%s' found", schema) |
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89 } |
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90 linterPath, err := exec.LookPath(linter) |
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91 if err != nil { |
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92 return err |
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93 } |
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94 |
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95 type envelope struct { |
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96 _ xml.Name `xml:"http://schemas.xmlsoap.org/soap/envelope/ Envelope"` |
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97 Body *struct { |
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98 Inner []byte `xml:",innerxml"` |
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99 } `xml:"http://schemas.xmlsoap.org/soap/envelope/ Body"` |
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100 } |
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101 |
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102 content, err := ioutil.ReadAll(r) |
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103 if err != nil { |
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104 return err |
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105 } |
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106 |
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107 dec := xml.NewDecoder(bytes.NewReader(content)) |
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108 dec.CharsetReader = charset.NewReaderLabel |
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109 |
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110 var env envelope |
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111 if err := dec.Decode(&env); err != nil { |
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112 return err |
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113 } |
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114 |
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115 // It has a body -> throw envelope away. |
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116 if env.Body != nil && len(env.Body.Inner) > 0 { |
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117 content = env.Body.Inner |
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118 } |
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119 |
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120 cmd := exec.Command( |
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121 linterPath, |
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122 "--schema", schemaPath, |
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123 "--noout", |
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124 "-") |
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125 |
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126 var stderr bytes.Buffer |
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127 |
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128 cmd.Stdin = bytes.NewReader(content) |
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129 cmd.Stderr = &stderr |
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130 cmd.Stdout = ioutil.Discard |
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131 |
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132 if err := cmd.Start(); err != nil { |
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133 return err |
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134 } |
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135 |
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136 if err := cmd.Wait(); err != nil { |
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137 if err2, ok := err.(*exec.ExitError); ok { |
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138 if !err2.Success() { |
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139 return ValidationError(stderr.String()) |
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140 } |
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141 } |
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142 return err |
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143 } |
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144 |
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145 // Validation successful -> Deserialize. |
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146 |
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147 dec = xml.NewDecoder(bytes.NewReader(content)) |
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148 dec.CharsetReader = charset.NewReaderLabel |
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149 |
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150 return dec.Decode(dst) |
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151 } |