private static Map<String, Integer> computeColumnWidths(
final Iterable<CamelContext> camelContexts) throws Exception {
if (camelContexts == null) {
throw new IllegalArgumentException(
"Unable to determine column widths from null Iterable<CamelContext>");
} else {
int maxNameLen = 0;
int maxStatusLen = 0;
int maxUptimeLen = 0;
for (final CamelContext camelContext : camelContexts) {
final String name = camelContext.getName();
maxNameLen = java.lang.Math.max(maxNameLen, name == null ? 0 : name.length());
final String status = camelContext.getStatus().toString();
maxStatusLen = java.lang.Math.max(maxStatusLen, status == null ? 0 : status.length());
final String uptime = camelContext.getUptime();
maxUptimeLen = java.lang.Math.max(maxUptimeLen, uptime == null ? 0 : uptime.length());
}
final Map<String, Integer> retval = new Hashtable<String, Integer>(3);
retval.put(NAME_COLUMN_LABEL, maxNameLen);
retval.put(STATUS_COLUMN_LABEL, maxStatusLen);
retval.put(UPTIME_COLUMN_LABEL, maxUptimeLen);
return retval;
}
}
@Override
public List<Map<String, String>> getCamelContexts() throws Exception {
List<Map<String, String>> answer = new ArrayList<Map<String, String>>();
List<CamelContext> camelContexts = getLocalCamelContexts();
for (CamelContext camelContext : camelContexts) {
Map<String, String> row = new LinkedHashMap<String, String>();
row.put("name", camelContext.getName());
row.put("state", camelContext.getStatus().name());
row.put("uptime", camelContext.getUptime());
if (camelContext.getManagedCamelContext() != null) {
row.put("exchangesTotal", "" + camelContext.getManagedCamelContext().getExchangesTotal());
row.put(
"exchangesInflight", "" + camelContext.getManagedCamelContext().getExchangesInflight());
row.put("exchangesFailed", "" + camelContext.getManagedCamelContext().getExchangesFailed());
} else {
row.put("exchangesTotal", "0");
row.put("exchangesInflight", "0");
row.put("exchangesFailed", "0");
}
answer.add(row);
}
return answer;
}
@Override
public Object execute(CamelController camelController, PrintStream out, PrintStream err)
throws Exception {
final List<CamelContext> camelContexts = camelController.getCamelContexts();
final Map<String, Integer> columnWidths = computeColumnWidths(camelContexts);
final String headerFormat = buildFormatString(columnWidths, true);
final String rowFormat = buildFormatString(columnWidths, false);
if (camelContexts.size() > 0) {
out.println(
String.format(
headerFormat, CONTEXT_COLUMN_LABEL, STATUS_COLUMN_LABEL, UPTIME_COLUMN_LABEL));
out.println(String.format(headerFormat, "-------", "------", "------"));
for (final CamelContext camelContext : camelContexts) {
out.println(
String.format(
rowFormat,
camelContext.getName(),
camelContext.getStatus(),
camelContext.getUptime()));
}
}
return null;
}
protected Object doExecute() throws Exception {
final List<CamelContext> camelContexts = camelController.getCamelContexts();
final Map<String, Integer> columnWidths = computeColumnWidths(camelContexts);
final String headerFormat = buildFormatString(columnWidths, true);
final String rowFormat = buildFormatString(columnWidths, false);
final PrintStream out = System.out;
if (camelContexts.size() > 0) {
out.println(
String.format(headerFormat, NAME_COLUMN_LABEL, STATUS_COLUMN_LABEL, UPTIME_COLUMN_LABEL));
for (final CamelContext camelContext : camelContexts) {
out.println(
String.format(
rowFormat,
camelContext.getName(),
camelContext.getStatus(),
camelContext.getUptime()));
}
}
return null;
}