Method Update

tempodb/blocklist/list.go:104–123

Update Adds and removes regular or compacted blocks from the in-memory blocklist. Changes are temporary and will be preserved only for one poll

(tenantID string, add []*backend.BlockMeta, remove []*backend.BlockMeta, compactedAdd []*backend.CompactedBlockMeta, compactedRemove []*backend.CompactedBlockMeta)

// Update Adds and removes regular or compacted blocks from the in-memory blocklist.
// Changes are temporary and will be preserved only for one poll
func (l *List) Update(tenantID string, add []*backend.BlockMeta, remove []*backend.BlockMeta, compactedAdd []*backend.CompactedBlockMeta, compactedRemove []*backend.CompactedBlockMeta) {
	if tenantID == "" {
		return
	}

	l.mtx.Lock()
	defer l.mtx.Unlock()

	l.updateInternal(tenantID, add, remove, compactedAdd, compactedRemove)

	// We have updated the current blocklist, but we may be in the middle of a
	// polling cycle.  When the Apply is called above, we will have lost the
	// changes that we have just added. So we keep track of them here and apply
	// them again after the Apply to save them for the next polling cycle.  On
	// the next polling cycle, the changes here will rediscovered.
	l.added[tenantID] = append(l.added[tenantID], add...)
	l.removed[tenantID] = append(l.removed[tenantID], remove...)
	l.compactedAdded[tenantID] = append(l.compactedAdded[tenantID], compactedAdd...)
	l.compactedRemoved[tenantID] = append(l.compactedRemoved[tenantID], compactedRemove...)
}

// updateInternal exists to do the work of applying updates to held PerTenant and PerTenantCompacted maps
// it must be called under lock