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Example 1 with SNAPSHOT_SYS_VIEW

use of org.apache.ignite.spi.systemview.view.SnapshotView.SNAPSHOT_SYS_VIEW in project ignite by apache.

the class IgniteSnapshotManager method start0.

/**
 * {@inheritDoc}
 */
@Override
protected void start0() throws IgniteCheckedException {
    super.start0();
    GridKernalContext ctx = cctx.kernalContext();
    if (ctx.clientNode())
        return;
    if (!CU.isPersistenceEnabled(ctx.config()))
        return;
    assert cctx.pageStore() instanceof FilePageStoreManager;
    storeMgr = (FilePageStoreManager) cctx.pageStore();
    pdsSettings = cctx.kernalContext().pdsFolderResolver().resolveFolders();
    locSnpDir = resolveSnapshotWorkDirectory(ctx.config());
    tmpWorkDir = U.resolveWorkDirectory(storeMgr.workDir().getAbsolutePath(), DFLT_SNAPSHOT_TMP_DIR, true);
    U.ensureDirectory(locSnpDir, "snapshot work directory", log);
    U.ensureDirectory(tmpWorkDir, "temp directory for snapshot creation", log);
    handlers.initialize(ctx, ctx.pools().getSnapshotExecutorService());
    MetricRegistry mreg = cctx.kernalContext().metric().registry(SNAPSHOT_METRICS);
    mreg.register("LastSnapshotStartTime", () -> lastSeenSnpFut.startTime, "The system time of the last cluster snapshot request start time on this node.");
    mreg.register("LastSnapshotEndTime", () -> lastSeenSnpFut.endTime, "The system time of the last cluster snapshot request end time on this node.");
    mreg.register("LastSnapshotName", () -> lastSeenSnpFut.name, String.class, "The name of last started cluster snapshot request on this node.");
    mreg.register("LastSnapshotErrorMessage", () -> lastSeenSnpFut.error() == null ? "" : lastSeenSnpFut.error().getMessage(), String.class, "The error message of last started cluster snapshot request which fail with an error. " + "This value will be empty if last snapshot request has been completed successfully.");
    mreg.register("LocalSnapshotNames", this::localSnapshotNames, List.class, "The list of names of all snapshots currently saved on the local node with respect to " + "the configured via IgniteConfiguration snapshot working path.");
    restoreCacheGrpProc.registerMetrics();
    cctx.exchange().registerExchangeAwareComponent(this);
    ctx.internalSubscriptionProcessor().registerMetastorageListener(this);
    cctx.gridEvents().addDiscoveryEventListener(discoLsnr = (evt, discoCache) -> {
        if (!busyLock.enterBusy())
            return;
        try {
            UUID leftNodeId = evt.eventNode().id();
            if (evt.type() == EVT_NODE_LEFT || evt.type() == EVT_NODE_FAILED) {
                SnapshotOperationRequest snpReq = clusterSnpReq;
                String err = "Snapshot operation interrupted, because baseline node left the cluster: " + leftNodeId;
                boolean reqNodeLeft = snpReq != null && snpReq.nodes().contains(leftNodeId);
                // the final snapshot phase (SNAPSHOT_END), we start it from a new one.
                if (reqNodeLeft && snpReq.startStageEnded() && U.isLocalNodeCoordinator(ctx.discovery())) {
                    snpReq.error(new ClusterTopologyCheckedException(err));
                    endSnpProc.start(snpReq.requestId(), snpReq);
                }
                for (AbstractSnapshotFutureTask<?> sctx : locSnpTasks.values()) {
                    if (sctx.sourceNodeId().equals(leftNodeId) || (reqNodeLeft && snpReq.snapshotName().equals(sctx.snapshotName())))
                        sctx.acceptException(new ClusterTopologyCheckedException(err));
                }
                restoreCacheGrpProc.onNodeLeft(leftNodeId);
                snpRmtMgr.onNodeLeft(leftNodeId);
            }
        } finally {
            busyLock.leaveBusy();
        }
    }, EVT_NODE_LEFT, EVT_NODE_FAILED);
    cctx.gridIO().addMessageListener(DFLT_INITIAL_SNAPSHOT_TOPIC, snpRmtMgr);
    cctx.kernalContext().io().addTransmissionHandler(DFLT_INITIAL_SNAPSHOT_TOPIC, snpRmtMgr);
    ctx.systemView().registerView(SNAPSHOT_SYS_VIEW, SNAPSHOT_SYS_VIEW_DESC, new SnapshotViewWalker(), () -> F.flatCollections(F.transform(localSnapshotNames(), this::readSnapshotMetadatas)), this::snapshotViewSupplier);
}
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