Class ReplicationEnvironment
- java.lang.Object
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- org.opends.server.replication.server.changelog.file.ReplicationEnvironment
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- All Implemented Interfaces:
ChangelogStateProvider
public class ReplicationEnvironment extends Object implements ChangelogStateProvider
Represents the replication environment, which allows to manage the lifecycle of the replication changelog.A changelog has a root directory, under which the following directories and files are created :
- A "changenumberindex" directory containing the log files for ChangeNumberIndexDB, and a file named "rotationtime[millis].last" where [millis] is the time of the last log file rotation in milliseconds
- A "domains.state" file containing a mapping of each domain DN to an id. The id is used to name the corresponding domain directory.
- One directory per domain, named after "[id].domain" where [id] is the id assigned to the domain, as specified in the "domains.state" file.
Each domain directory contains the following directories and files :
- A "generation[id].id" file, where [id] is the generation id
- One directory per server id, named after "[id].server" where [id] is the id of the server.
- the most recent log file (also known as "head" log file), if present, where new records are appended.
- Zero to many read-only log files named after the lowest key present in the log file (they all end with the ".log" suffix.
Log
class for details on the log files.Layout example with two domains "o=test1" and "o=test2", each having server ids 22 and 33, with server id 33 for domain "o=test1" being offline :
+---changelog | \---domains.state [contains mapping: 1 => "o=test1", 2 => "o=test2"] | \---changenumberindex | \--- 1.log [contains records with keys greater than or equal to 1 | \--- 51.log [contains last records written with keys greater than or equal to 51 | \--- rotationtime198745512.last | \---1.domain | \---generation1.id | \---22.server | \---00000163bbcbb2b0001600000001.log [contains last records written] | \---33.server | \---00000163bbcbb2b000210000002a.log [contains last records written] | \---2.domain | \---generation1.id | \---22.server | \---00000163bbcbeffb00160000002a.log [contains last records written] | \---33.server | \---00000163bbcbeffb002100000044.log [contains last records written]
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description ChangelogState
getChangelogState()
Returns the current state of the replication changelog.
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Method Detail
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getChangelogState
public ChangelogState getChangelogState()
Description copied from interface:ChangelogStateProvider
Returns the current state of the replication changelog.- Specified by:
getChangelogState
in interfaceChangelogStateProvider
- Returns:
- current in-memory
ChangelogState
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