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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
// Author: arnej
package jvm
import (
"fmt"
"strconv"
"strings"
"github.com/vespa-engine/vespa/client/go/internal/admin/defaults"
"github.com/vespa-engine/vespa/client/go/internal/admin/trace"
"github.com/vespa-engine/vespa/client/go/internal/util"
"github.com/vespa-engine/vespa/client/go/internal/vespa"
)
type Options struct {
container Container
classPath []string
jvmArgs util.ArrayList[string]
mainClass string
jarWithDeps string
fixSpec util.FixSpec
}
func NewOptions(c Container) *Options {
vespaUid, vespaGid := vespa.FindVespaUidAndGid()
fixSpec := util.FixSpec{
UserId: vespaUid,
GroupId: vespaGid,
DirMode: 0755,
FileMode: 0644,
}
return &Options{
container: c,
classPath: make([]string, 0, 10),
jvmArgs: make([]string, 0, 100),
jarWithDeps: DEFAULT_JAR_WITH_DEPS,
mainClass: DEFAULT_MAIN_CLASS,
fixSpec: fixSpec,
}
}
func (opts *Options) AddOption(arg string) {
if opts.jvmArgs.Contains(arg) {
return
}
opts.AppendOption(arg)
}
func (opts *Options) AppendOption(arg string) {
trace.Trace("append JVM option:", arg)
opts.jvmArgs = append(opts.jvmArgs, arg)
}
func (opts *Options) ClassPath() string {
cp := defaults.UnderVespaHome(opts.jarWithDeps)
for _, x := range opts.classPath {
cp = fmt.Sprintf("%s:%s", cp, x)
}
trace.Trace("computed classpath:", cp)
return cp
}
func (opts *Options) Args() []string {
args := opts.jvmArgs
args = append(args, "-cp")
args = append(args, opts.ClassPath())
args = append(args, opts.mainClass)
args = append(args, opts.container.ArgForMain())
return args
}
func (opts *Options) AddJvmArgsFromString(args string) {
for _, x := range strings.Fields(args) {
opts.AppendOption(x)
}
}
func (opts *Options) ConfigureCpuCount(cnt int) {
if cnt <= 0 {
out, err := util.BackTicksForwardStderr.Run("nproc", "--all")
if err != nil {
trace.Trace("failed nproc:", err)
} else {
cnt, err = strconv.Atoi(strings.TrimSpace(out))
if err != nil {
trace.Trace("bad nproc output:", strings.TrimSpace(out))
cnt = 0
} else {
trace.Trace("CpuCount: using", cnt, "from nproc --all")
}
}
}
if cnt > 0 {
opts.AddOption(fmt.Sprintf("-XX:ActiveProcessorCount=%d", cnt))
}
}
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