public TerminalSnapshot getSnapshot() {
lazyConnect();
// clear the snapshot sequence is different from the session, clear it so it will re-build
if (terminalSnapshot != null
&& terminalSnapshot.getSequence() != null
&& !terminalConnection.getSequence().equals(terminalSnapshot.getSequence())) {
terminalSnapshot = null;
}
waitForNonEmptySnapshot();
if (!isConnected()) {
disconnect();
throw (new OpenLegacyRuntimeException("Session is not connected"));
}
if (terminalSnapshot == null) {
throw (new OpenLegacyProviderException(
MessageFormat.format(
"Current screen is empty for session after waiting for {0}", maxWaitOnEmptyScreen)));
}
return terminalSnapshot;
}
private int waitForNonEmptySnapshot() {
int timer = 0;
do {
if (terminalSnapshot == null) {
terminalSnapshot = terminalConnection.fetchSnapshot();
}
if (terminalSnapshot.getFields().size() == 0) {
try {
Thread.sleep(waitBetweenEmptyScreens);
timer += waitBetweenEmptyScreens;
} catch (InterruptedException e) {
// do nothing
}
terminalSnapshot = null;
}
} while (isConnected() && terminalSnapshot == null && timer < maxWaitOnEmptyScreen);
return timer;
}
private void assertSnapshot(TerminalSnapshot terminalSnapshot, String snapshotTextFile)
throws IOException {
byte[] expectedBytes = IOUtils.toByteArray(getClass().getResourceAsStream(snapshotTextFile));
AssertUtils.assertContent(expectedBytes, terminalSnapshot.toString().getBytes());
}