Mercurial > gemma
view pkg/soap/validate.go @ 5520:05db984d3db1
Improve performance of bottleneck area calculation
Avoid buffer calculations by replacing them with simple distance comparisons
and calculate the boundary of the result geometry only once per iteration.
In some edge cases with very large numbers of iterations, this reduced
the runtime of a bottleneck import by a factor of more than twenty.
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 21 Oct 2021 19:50:39 +0200 |
parents | bd09d6ad4c14 |
children | 31973f6f5cca |
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// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> package soap import ( "bytes" "encoding/xml" "fmt" "io" "io/ioutil" "os" "os/exec" "path/filepath" "strings" "golang.org/x/net/html/charset" "gemma.intevation.de/gemma/pkg/config" ) const linter = "xmllint" type ( ValidationError string foundError string ) func (ef foundError) Error() string { return string(ef) } func (ve ValidationError) Error() string { return string(ve) } func FindSchema(name string) (string, error) { name = strings.ToLower(name) config.WaitReady() for _, root := range filepath.SplitList(config.SchemaDirs()) { err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error { if err != nil { return err } if info == nil { return nil } if info.Mode().IsRegular() && strings.ToLower(info.Name()) == name { return foundError(path) } return nil }) if path, ok := err.(foundError); ok { return string(path), nil } if err != nil { return "", err } } return "", nil } func ValidateFile(fname, schema string, dst interface{}) error { f, err := os.Open(fname) if err != nil { return err } defer f.Close() return Validate(f, schema, dst) } func Validate(r io.Reader, schema string, dst interface{}) error { schemaPath, err := FindSchema(schema) if err != nil { return err } if schemaPath == "" { return fmt.Errorf("no schema file '%s' found", schema) } linterPath, err := exec.LookPath(linter) if err != nil { return err } type envelope struct { _ xml.Name `xml:"http://schemas.xmlsoap.org/soap/envelope/ Envelope"` Body *struct { Inner []byte `xml:",innerxml"` } `xml:"http://schemas.xmlsoap.org/soap/envelope/ Body"` } content, err := ioutil.ReadAll(r) if err != nil { return err } dec := xml.NewDecoder(bytes.NewReader(content)) dec.CharsetReader = charset.NewReaderLabel var env envelope if err := dec.Decode(&env); err != nil { return err } // It has a body -> throw envelope away. if env.Body != nil && len(env.Body.Inner) > 0 { content = env.Body.Inner } cmd := exec.Command( linterPath, "--schema", schemaPath, "--noout", "-") var stderr bytes.Buffer cmd.Stdin = bytes.NewReader(content) cmd.Stderr = &stderr cmd.Stdout = ioutil.Discard if err := cmd.Start(); err != nil { return err } if err := cmd.Wait(); err != nil { if err2, ok := err.(*exec.ExitError); ok { if !err2.Success() { return ValidationError(stderr.String()) } } return err } // Validation successful -> Deserialize. dec = xml.NewDecoder(bytes.NewReader(content)) dec.CharsetReader = charset.NewReaderLabel return dec.Decode(dst) }