Due to a ransomware attack, the wiki was reverted to a July 2022 version. . We apologize for the lack of a more recent valid backup.
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Assuming that you have ONOS running on your local machine, you can install the app from the command line:
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$ onos-app localhost install! target/meowster-app-1.0-SNAPSHOT.oar |
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(1) implement createRequestHandlers() to provide request handler implementations for specific event types from our view.
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@Override
protected Collection<RequestHandler> createRequestHandlers() {
return ImmutableSet.of(
new SampleDataRequestHandler(),
new SampleDetailRequestHandler()
);
} |
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(2) define SampleDataRequestHandler class to handle "sampleDataRequest" events from the client. Note that this class extends TableRequestHandler, which implements most of the functionality required to support the table data model:
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private static final String SAMPLE_DATA_REQ = "sampleDataRequest";
private static final String SAMPLE_DATA_RESP = "sampleDataResponse";
private static final String SAMPLES = "samples";
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private final class SampleDataRequestHandler extends TableRequestHandler {
private SampleDataRequestHandler() {
super(SAMPLE_DATA_REQ, SAMPLE_DATA_RESP, SAMPLES);
}
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} |
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Typically, table rows have a unique value (row key) to identify the row (for example, in the Devices table it is the value of the Device.id() property). The default identifier for the column holding the row key is "id". If you want to use a different column identifier for the row key, your class should override defaultColumnId(). For example:
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private static final String MAC = "mac";
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@Override
protected String defaultColumnId() {
return MAC;
} |
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(2b) define column identifiers:
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private static final String ID = "id";
private static final String LABEL = "label";
private static final String CODE = "code";
private static final String[] COLUMN_IDS = { ID, LABEL, CODE };
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@Override
protected String[] getColumnIds() {
return COLUMN_IDS;
} |
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(2c) optionally override createTableModel() to specify custom cell formatters / comparators. The following example sets both a formatter and a comparator for the "code" column:
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@Override
protected TableModel createTableModel() {
TableModel tm = super.createTableModel();
tm.setFormatter(CODE, CodeFormatter.INSTANCE);
tm.setComparator(CODE, CodeComparator.INSTANCE);
return tm;
} |
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(2d) implement populateTable() to add rows to the supplied table model:
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@Override
protected void populateTable(TableModel tm, ObjectNode payload) {
// ...
List<Item> items = getItems();
for (Item item: items) {
populateRow(tm.addRow(), item);
}
}
private void populateRow(TableModel.Row row, Item item) {
row.cell(ID, item.id())
.cell(LABEL, item.label())
.cell(CODE, item.code());
} |
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