discovery_viewer.h File Reference

Real-time view of all active VLink endpoints discovered on the current host or network. More...

#include <cstdint>
#include <functional>
#include <memory>
#include <string>
#include <vector>
#include "../base/macros.h"
#include "../base/message_loop.h"
#include "../impl/types.h"

Include dependency graph for discovery_viewer.h:

Go to the source code of this file.

Classes
class	vlink::DiscoveryViewer
	Background MessageLoop that aggregates live VLink endpoint discovery data. More...
struct	vlink::DiscoveryViewer::Process
	Information about one process that hosts a VLink endpoint. More...
struct	vlink::DiscoveryViewer::Info
	Aggregated discovery entry for one VLink URL. More...

Namespaces
namespace	vlink

Detailed Description

Real-time view of all active VLink endpoints discovered on the current host or network.

DiscoveryViewer subscribes to DiscoveryReporter broadcasts and maintains a live list of all known VLink processes and their endpoints. It is used by the vlink-cli tool and by monitoring applications.

Each entry in the Info list describes one topic URL and the set of processes that publish or subscribe to it. Entries are sorted for stable display.

Filter modes

FilterType	Shows
kFilterNone	All discovered endpoints
kFilterAvailable	Only endpoints that have at least one live process
kFilterNative	Only endpoints from the same host

Usage

vlink::DiscoveryViewer viewer(vlink::DiscoveryViewer::kFilterAvailable);
viewer.register_callback([](const std::vector<vlink::DiscoveryViewer::Info>& list) {
    for (auto& info : list) {
        VLOG_I("URL: ", info.url, " type: ", info.type);
    }
});
viewer.async_run();

Note

• The callback is invoked on the viewer's event loop thread.
• Use global_get() to share one viewer across the application.
• Endpoints that do not send a heartbeat within a timeout are removed automatically.