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main.go
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main.go
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/*
* Copyright 2018-2020 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"fmt"
"regexp"
"github.com/gocolly/colly"
"github.com/paketo-buildpacks/pipeline-builder/actions"
)
func main() {
inputs := actions.NewInputs()
uri, ok := inputs["uri"]
if !ok {
panic(fmt.Errorf("uri must be specified"))
}
versionRegex, ok := inputs["version_regex"]
if !ok {
fmt.Println(`No version_regex set, using default: ^v([\d]+)\.([\d]+)\.([\d]+)/$`)
versionRegex = `^v([\d]+)\.([\d]+)\.([\d]+)/$`
}
c := colly.NewCollector()
cp := regexp.MustCompile(versionRegex)
versions := make(actions.Versions)
sources := make(map[string]string)
c.OnHTML("a[href]", func(element *colly.HTMLElement) {
if p := cp.FindStringSubmatch(element.Attr("href")); p != nil {
v := fmt.Sprintf("%s.%s.%s", p[1], p[2], p[3])
versions[v] = fmt.Sprintf("%s/v%[2]s/bin/apache-tomcat-%[2]s.tar.gz", uri, v)
sources[v] = fmt.Sprintf("%s/v%[2]s/src/apache-tomcat-%[2]s-src.tar.gz", uri, v)
}
})
if err := c.Visit(uri); err != nil {
panic(err)
}
latestVersion, err := versions.GetLatestVersion(inputs)
if err != nil {
panic(err)
}
latestSource := actions.Outputs{}
if len(sources) != 0{
latestSource["source"] = sources[latestVersion.Original()]
}
o, err := actions.NewOutputs(versions[latestVersion.Original()], latestVersion, latestSource)
if err != nil {
panic(err)
}else {
o.Write()
}
}