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Handle java-home non-existent folder. More logging for JVM lookup.

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This commit is contained in:
BoykoAlex
2021-08-12 15:28:30 -04:00
parent 4447021b79
commit 2677333593
7 changed files with 167 additions and 102 deletions
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36
nodejs-packages/jvm-launch-utils/src/jvm-util.ts
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@@ -42,9 +42,12 @@ export interface JVM {
* The returned JVM may or may not be a JDK. Methods are provided to obtain corresponding
* toolsjar and to check whether the JVM is a JDK.
*/
export function findJvm(javaHome?: string) : Promise<JVM | null> {
export function findJvm(javaHome: string, log?: (msg: string) => void) : Promise<JVM | null> {
if (!log) {
log = console.log;
}
try {
let javaExe = findJavaExe(javaHome);
let javaExe = findJavaExe(javaHome, log);
if (javaExe) {
return getJavaInfo(javaExe).then(javaProps => new JVMImpl(
javaProps.get("java.home"),
@@ -62,13 +65,16 @@ export function findJvm(javaHome?: string) : Promise<JVM | null> {
* Like findJvm, but additionally, if the found JVM is not a JDK tries to
* find a companion JDK that may be installed alongside it.
*/
export function findJdk(javaHome?: string) : Promise<JVM | null> {
return findJvm(javaHome).then(jvm => {
export function findJdk(javaHome: string, log?: (msg: string) => void) : Promise<JVM | null> {
if (!log) {
log = console.log;
}
return findJvm(javaHome, log).then(jvm => {
if(!jvm) {
return null;
}
if (!jvm.isJdk()) {
console.log("found jvm is not a JDK");
log(`found JVM at location "${jvm.getJavaHome()}" is not a JDK`);
//Try to find a 'sibling' JDK.
//Mainly for windows where it is common to have side-by-side install of a jre and jdk, instead of a
@@ -79,20 +85,16 @@ export function findJdk(javaHome?: string) : Promise<JVM | null> {
//C:\ProgramFiles\Java\jre1.8.0_161
let javaExe = jvm.getJavaExecutable();
console.log("javaExe = ", javaExe);
// javaExe example: C:\ProgramFiles\Java\jre1.8.0_161\bin\java.exe
let jhome = jvm.getJavaHome();
console.log("jhome = ", jhome);
let basename : string = Path.basename(jhome);
console.log("basename = ", basename);
let altBasename : string = basename.replace("jre", "jdk");
console.log("altBasename = ", altBasename);
if (altBasename!==basename) {
let altHome = Path.join(Path.dirname(jhome), altBasename);
console.log("altHome = ", altHome);
log(`Trying to find JDK corresping to currently found JRE. Checking for JDK at ${altHome}`);
if (FS.existsSync(altHome)) {
let altExe = Path.resolve(altHome, "bin", correctBinname("java"));
console.log("altExe = ", altExe);
log("altExe = " + altExe);
return new JVMImpl(altHome, altExe, jvm.getMajorVersion());
}
}
@@ -107,14 +109,20 @@ export function findJdk(javaHome?: string) : Promise<JVM | null> {
* Optionally, a specific javaHome can be passed in. This shortcuts the
* search logic and uses that javaHome as is, not looking anywhere else.
*/
function findJavaExe(javaHome?: string) : string | null {
function findJavaExe(javaHome: string, log?: (msg: string) => void) : string | null {
if (!log) {
log = console.log;
}
//Try java home first
if (!javaHome) {
log('No user specified java-home setting. Looking for JAVA_HOME env variable...');
javaHome = process.env["JAVA_HOME"];
}
if (javaHome) {
//Resolve symlinks
javaHome = FS.realpathSync(javaHome);
} else {
log('JAVA_HOME environment variable not set');
}
let binName = correctBinname("java");
if (javaHome) {
@@ -122,8 +130,11 @@ function findJavaExe(javaHome?: string) : string | null {
if (FS.existsSync(javaExe)) {
return javaExe;
}
// Fall through invalid JVM specified by JAVA_HOME varable
log(`JAVA_HOME env variable points to location that does NOT exist: ${javaHome}`)
}
log('Looking for the path to JVM inside PATH env variable');
for (let searchPath of process.env['PATH'].split(Path.delimiter)) {
let javaExe = Path.resolve(searchPath, binName);
if (FS.existsSync(javaExe)) {
@@ -131,6 +142,7 @@ function findJavaExe(javaHome?: string) : string | null {
return FS.realpathSync(javaExe);
}
}
log('No valid JVM found on the system!!!');
return null;
}