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Merge pull request #136 from paketo-buildpacks/quarkus
Quarkus
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,208 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package native | ||
|
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| import ( | ||
| "fmt" | ||
| "io/ioutil" | ||
| "os" | ||
| "path/filepath" | ||
| "sort" | ||
| "strings" | ||
|
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| "github.com/magiconair/properties" | ||
| "github.com/mattn/go-shellwords" | ||
| "github.com/paketo-buildpacks/libpak" | ||
| ) | ||
|
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| type Arguments interface { | ||
| Configure(inputArgs []string) ([]string, string, error) | ||
| } | ||
|
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| // BaselineArguments provides a set of arguments that are always set | ||
| type BaselineArguments struct { | ||
| StackID string | ||
| } | ||
|
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| // Configure provides an initial set of arguments, it ignores any input arguments | ||
| func (b BaselineArguments) Configure(_ []string) ([]string, string, error) { | ||
| var newArguments []string | ||
|
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| if b.StackID == libpak.TinyStackID { | ||
| newArguments = append(newArguments, "-H:+StaticExecutableWithDynamicLibC") | ||
| } | ||
|
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| return newArguments, "", nil | ||
| } | ||
|
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| // UserArguments augments the existing arguments with those provided by the end user | ||
| type UserArguments struct { | ||
| Arguments string | ||
| } | ||
|
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| // Configure returns the inputArgs plus the additional arguments specified by the end user, preference given to user arguments | ||
| func (u UserArguments) Configure(inputArgs []string) ([]string, string, error) { | ||
| parsedArgs, err := shellwords.Parse(u.Arguments) | ||
| if err != nil { | ||
| return []string{}, "", fmt.Errorf("unable to parse arguments from %s\n%w", u.Arguments, err) | ||
| } | ||
|
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| var outputArgs []string | ||
|
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| for _, inputArg := range inputArgs { | ||
| if !containsArg(inputArg, parsedArgs) { | ||
| outputArgs = append(outputArgs, inputArg) | ||
| } | ||
| } | ||
|
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| outputArgs = append(outputArgs, parsedArgs...) | ||
|
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| return outputArgs, "", nil | ||
| } | ||
|
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| // UserFileArguments augments the existing arguments with those provided by the end user through a file | ||
| type UserFileArguments struct { | ||
| ArgumentsFile string | ||
| } | ||
|
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| // Configure returns the inputArgs plus the additional arguments specified by the end user through the file, preference given to user arguments | ||
| func (u UserFileArguments) Configure(inputArgs []string) ([]string, string, error) { | ||
| rawArgs, err := ioutil.ReadFile(u.ArgumentsFile) | ||
| if err != nil { | ||
| return []string{}, "", fmt.Errorf("read arguments from %s\n%w", u.ArgumentsFile, err) | ||
| } | ||
|
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| parsedArgs, err := shellwords.Parse(string(rawArgs)) | ||
| if err != nil { | ||
| return []string{}, "", fmt.Errorf("unable to parse arguments from %s\n%w", string(rawArgs), err) | ||
| } | ||
|
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| var outputArgs []string | ||
|
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| for _, inputArg := range inputArgs { | ||
| if !containsArg(inputArg, parsedArgs) { | ||
| outputArgs = append(outputArgs, inputArg) | ||
| } | ||
| } | ||
|
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| outputArgs = append(outputArgs, parsedArgs...) | ||
|
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| return outputArgs, "", nil | ||
| } | ||
|
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| // containsArg checks if needle is found in haystack | ||
| // | ||
| // needle and haystack entries are processed as key=val strings where only the key must match | ||
| func containsArg(needle string, haystack []string) bool { | ||
| needleSplit := strings.SplitN(needle, "=", 2) | ||
|
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| for _, straw := range haystack { | ||
| targetSplit := strings.SplitN(straw, "=", 2) | ||
| if needleSplit[0] == targetSplit[0] { | ||
| return true | ||
| } | ||
| } | ||
|
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| return false | ||
| } | ||
|
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| // ExplodedJarArguments provides a set of arguments specific to building from an exploded jar directory | ||
| type ExplodedJarArguments struct { | ||
| ApplicationPath string | ||
| LayerPath string | ||
| Manifest *properties.Properties | ||
| } | ||
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| // NoStartOrMainClass is an error returned when a start or main class cannot be found | ||
| type NoStartOrMainClass struct{} | ||
|
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| func (e NoStartOrMainClass) Error() string { | ||
| return "unable to read Start-Class or Main-Class from MANIFEST.MF" | ||
| } | ||
|
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| // Configure appends arguments to inputArgs for building from an exploded JAR directory | ||
| func (e ExplodedJarArguments) Configure(inputArgs []string) ([]string, string, error) { | ||
| startClass, ok := e.Manifest.Get("Start-Class") | ||
| if !ok { | ||
| startClass, ok = e.Manifest.Get("Main-Class") | ||
| if !ok { | ||
| return []string{}, "", NoStartOrMainClass{} | ||
| } | ||
| } | ||
|
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| cp := os.Getenv("CLASSPATH") | ||
| if cp == "" { | ||
| // CLASSPATH should have been done by upstream buildpacks, but just in case | ||
| cp = e.ApplicationPath | ||
| if v, ok := e.Manifest.Get("Class-Path"); ok { | ||
| cp = strings.Join([]string{cp, v}, string(filepath.ListSeparator)) | ||
| } | ||
| } | ||
|
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| inputArgs = append(inputArgs, | ||
| fmt.Sprintf("-H:Name=%s", filepath.Join(e.LayerPath, startClass)), | ||
| "-cp", cp, | ||
| startClass, | ||
| ) | ||
|
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| return inputArgs, startClass, nil | ||
| } | ||
|
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| // JarArguments provides a set of arguments specific to building from a jar file | ||
| type JarArguments struct { | ||
| ApplicationPath string | ||
| JarFilePattern string | ||
| } | ||
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| func (j JarArguments) Configure(inputArgs []string) ([]string, string, error) { | ||
| file := filepath.Join(j.ApplicationPath, j.JarFilePattern) | ||
| candidates, err := filepath.Glob(file) | ||
| if err != nil { | ||
| return []string{}, "", fmt.Errorf("unable to find JAR with %s\n%w", j.JarFilePattern, err) | ||
| } | ||
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| if len(candidates) != 1 { | ||
| sort.Strings(candidates) | ||
| return []string{}, "", fmt.Errorf("unable to find single JAR in %s, candidates: %s", j.JarFilePattern, candidates) | ||
| } | ||
|
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| jarFileName := filepath.Base(candidates[0]) | ||
| startClass := strings.TrimSuffix(jarFileName, ".jar") | ||
|
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| if containsArg("-jar", inputArgs) { | ||
| var tmpArgs []string | ||
| var skip bool | ||
| for _, inputArg := range inputArgs { | ||
| if skip { | ||
| skip = false | ||
| break | ||
| } | ||
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| if inputArg == "-jar" { | ||
| skip = true | ||
| break | ||
| } | ||
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| tmpArgs = append(tmpArgs, inputArg) | ||
| } | ||
| inputArgs = tmpArgs | ||
| } | ||
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| inputArgs = append(inputArgs, "-jar", candidates[0]) | ||
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| return inputArgs, startClass, nil | ||
| } |
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