Represents a node in the cluster. More...

#include <ClioNode.hpp>

Public Types
enum class	DbRole { ReadOnly = 0 , NotWriter = 1 , Writer = 2 , Fallback = 3 , FallbackRecovery = 4 , Max = 4 }
	Database role of a node in the cluster. More...
using	Uuid = std::shared_ptr<boost::uuids::uuid>
using	CUuid = std::shared_ptr<boost::uuids::uuid const>

Static Public Member Functions
static ClioNode	from (Uuid uuid, etl::WriterStateInterface const &writerState, data::LedgerCacheLoadingStateInterface const &cacheLoadingState)
	Create a ClioNode from writer state and cache loading state.

Public Attributes
Uuid	uuid
	The UUID of the node.
std::chrono::system_clock::time_point	updateTime
	The time the data about the node was last updated.
DbRole	dbRole
	The database role of the node.
bool	etlStarted
	Whether the ETL monitor has started on this node.
bool	cacheIsFull
	Whether the ledger cache is fully loaded on this node.
bool	cacheIsCurrentlyLoading
	Whether this node is currently loading the ledger cache.

Static Public Attributes
static constexpr char const *	kTIME_FORMAT = "%Y-%m-%dT%H:%M:%SZ"
	The format of the time to store in the database.

Detailed Description

Represents a node in the cluster.

Member Enumeration Documentation

strong

Database role of a node in the cluster.

Roles are used to coordinate which node writes to the database:

ReadOnly: Node is configured to never write (strict read-only mode).
NotWriter: Node can write but is currently not the designated writer.
Writer: Node is actively writing to the database.
Fallback: Node is using the fallback writer decision mechanism (slower but reliable database-based write-conflict detection). When any non-ReadOnly node in the cluster is in this role, the entire cluster switches to fallback mode.
FallbackRecovery: Node has been in Fallback long enough to attempt returning to election-based writer selection. The node continues participating in the fallback write-race while coordinating with peers. Once all non-ReadOnly nodes reach this role (or have already returned to election mode), the cluster exits fallback and performs a normal election.

ClioNode cluster::ClioNode::from	(	ClioNode::Uuid	uuid,
		etl::WriterStateInterface const &	writerState,
		data::LedgerCacheLoadingStateInterface const &	cacheLoadingState )

static

Create a ClioNode from writer state and cache loading state.

Parameters

uuid	The UUID of the node
writerState	The writer state to determine the node's database role
cacheLoadingState	The cache loading state to determine if cache is being loaded

The documentation for this struct was generated from the following files: