/*
Invoke bds java program
WARNING:
It is assumed that bds.jar is in the same executable binary as 'bds'
This is actually a nice hack used to distribute only one file. Since JAR files
are actually ZIP files and ZIP files are indexed from the end of the file, you can
append the JAR to the go binary (cat binary jar > new_binary) and you encapsulate
both in the same file.
Idea and implementation of this hack: Hernan Gonzalez
*/
func (be *BdsExec) Bds() int {
// Create a taskLoggerFile (temp file based on pid number)
prefix := "bds.pid." + strconv.Itoa(syscall.Getpid())
pidTmpFile, err := tmpfile.TempFile(prefix)
if err != nil {
log.Fatal(err)
}
be.taskLoggerFile = pidTmpFile
defer os.Remove(be.taskLoggerFile) // Make sure the PID file is new
if DEBUG {
log.Printf("Info: taskLoggerFile '%s'\n", be.taskLoggerFile)
}
bdsLibDir := path.Dir(be.execName) + "/" + BDS_NATIVE_LIB_DIR
// Append all arguments from command line
be.cmdargs = []string{JAVA_CMD,
JAVA_MEM,
JAVA_NATIVE_LIB + bdsLibDir,
"-cp", be.execName,
JAVA_BDS_CLASS}
be.cmdargs = append(be.cmdargs, "-pid")
be.cmdargs = append(be.cmdargs, be.taskLoggerFile)
for _, arg := range be.args[1:] {
be.cmdargs = append(be.cmdargs, arg)
}
// Execute command
be.command = JAVA_CMD
exitCode := be.executeCommand()
return exitCode
}
/*
Invoke BigDataScript java program
WARNING:
It is assumed that BigDataScript.jar is in the same executable binary as 'bds'
This is actually a nice hack used to distribute only one file. Since JAR files
are actually ZIP files and ZIP files are indexed from the end of the file, you can
append the JAR to the go binary (cat binary jar > new_binary) and you encapsulate
both in the same file.
Idea and implementation of this hack: Hernan Gonzalez
*/
func (be *BdsExec) BigDataScript() int {
// Create a taskLoggerFile (temp file based on pid number)
prefix := "bds.pid." + strconv.Itoa(syscall.Getpid())
pidTmpFile, err := tmpfile.TempFile(prefix)
if err != nil {
log.Fatal(err)
}
be.taskLoggerFile = pidTmpFile
defer os.Remove(be.taskLoggerFile) // Make sure the PID file is removed
// Append all arguments from command line
be.cmdargs = []string{"java",
"-Xmx2G",
"-cp", be.execName,
"ca.mcgill.mcb.pcingola.bigDataScript.BigDataScript"}
be.cmdargs = append(be.cmdargs, "-pid")
be.cmdargs = append(be.cmdargs, be.taskLoggerFile)
for _, arg := range be.args[1:] {
be.cmdargs = append(be.cmdargs, arg)
}
// Execute command
be.command = "java"
exitCode := be.executeCommand()
return exitCode
}