### Run ZooKeeper Queue Producer Example

Source: https://zookeeper.apache.org/doc/current/zookeeperTutorial.html

Command to start a producer client that creates 100 elements in the queue.

```bash
java SyncPrimitive qTest localhost 100 p
```

--------------------------------

### Run ZooKeeper Queue Consumer Example

Source: https://zookeeper.apache.org/doc/current/zookeeperTutorial.html

Command to start a consumer client that consumes 100 elements from the queue.

```bash
java SyncPrimitive qTest localhost 100 c
```

--------------------------------

### ServerBean and ServerMXBean Methods

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Methods to get the start time of the server.

```APIDOC
## getStartTime()

### Description
Returns the time when the server started.

### Method
GET

### Endpoint
N/A (Method in ServerBean and ServerMXBean)

### Parameters
None

### Response
N/A (Returns a long value representing time)
```

--------------------------------

### Start Server

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/NIOServerCnxnFactory.html

Starts the server connection factory.

```APIDOC
## start

### Description
Starts the server connection factory.

### Method
```java
public void start()
```
```

--------------------------------

### startup Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/NIOServerCnxnFactory.html

Starts the NIOServerCnxnFactory, initializing it with a ZooKeeperServer and optionally starting the server.

```APIDOC
## startup(ZooKeeperServer zks, boolean startServer)

### Description
Starts the NIOServerCnxnFactory, initializing it with the provided ZooKeeperServer instance and a flag indicating whether to start the server.

### Method
`public void startup(ZooKeeperServer zks, boolean startServer)`

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None
```

--------------------------------

### start

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/LearnerSessionTracker.html

Starts the LearnerSessionTracker.

```APIDOC
## start

### Description
Starts the LearnerSessionTracker. This method overrides the start method from the UpgradeableSessionTracker class.

### Method
`void start()`
```

--------------------------------

### start Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/command/AbstractFourLetterCommand.html

Starts the execution of the four-letter command.

```java
public
void start()
```

--------------------------------

### Run ZooKeeper Barrier Example

Source: https://zookeeper.apache.org/doc/current/zookeeperTutorial.html

Command to start a barrier test with a specified number of participants.

```bash
java SyncPrimitive bTest localhost 2
```

--------------------------------

### startup

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/ZooKeeperServer.html

Starts up the ZooKeeper server.

```APIDOC
## startup

### Description
Starts up the ZooKeeper server.

### Method Signature
`void startup()`
```

--------------------------------

### Example Command for Snapshot Comparison

Source: https://zookeeper.apache.org/doc/current/zookeeperTools.html

An example command demonstrating how to use the snapshot comparer tool with specific left and right snapshot files, and thresholds for byte and node differences.

```bash
./bin/zkSnapshotComparer.sh -l /zookeeper-data/backup/snapshot.d.snappy -r /zookeeper-data/backup/snapshot.44 -b 2 -n 1

```

--------------------------------

### start Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/UpgradeableSessionTracker.html

Starts the session tracker. This method should be called after initialization.

```java
public
void
start()
```

--------------------------------

### start

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/metrics/impl/DefaultMetricsProvider.html

Starts the metrics provider, potentially initializing network endpoints or other resources.

```APIDOC
## start

### Description
Start the provider. For instance such method will start a network endpoint.

### Method
`void start()`

### Throws
* `MetricsProviderLifeCycleException` - in case of failure
```

--------------------------------

### Start

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/QuorumPeer.html

Starts the quorum peer's operations.

```APIDOC
## start

### Description
Starts the quorum peer, including its participation in the quorum and leader election processes.

### Method
POST

### Endpoint
/quorum/start

### Overrides
`start` in class `Thread`
```

--------------------------------

### DummyAdminServer start Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/admin/DummyAdminServer.html

The start method for DummyAdminServer. It is specified by the AdminServer interface but performs no action. It can throw an AdminServerException.

```java
public void start()
           throws AdminServer.AdminServerException
```

--------------------------------

### start

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/NettyServerCnxnFactory.html

Starts the connection factory. This method is specified by the ServerCnxnFactory interface.

```APIDOC
## start

### Description
Starts the connection factory.

### Method
`public void start()`
```

--------------------------------

### ZooKeeper C Client Authentication and Node Creation Example

Source: https://zookeeper.apache.org/doc/current/zookeeperProgrammers.html

This example demonstrates authenticating with ZooKeeper using a custom scheme and creating an ephemeral node with specific permissions. It includes setup for the ZooKeeper handle, authentication, and node creation, followed by an attempt to retrieve the node which is expected to fail due to insufficient permissions.

```c
#include <string.h>
#include <errno.h>

#include "zookeeper.h"

static zhandle_t *zh;

/**
 * In this example this method gets the cert for your
 *   environment -- you must provide
 */
char *foo_get_cert_once(char* id) { return 0; }

/** Watcher function -- empty for this example, not something you should
 * do in real code */
void watcher(zhandle_t *zzh, int type, int state, const char *path,
         void *watcherCtx) {}

int main(int argc, char argv) {
  char buffer[512];
  char p[2048];
  char *cert=0;
  char appId[64];

  strcpy(appId, "example.foo_test");
  cert = foo_get_cert_once(appId);
  if(cert!=0) {
    fprintf(stderr,
        "Certificate for appid [%s] is [%s]\n",appId,cert);
    strncpy(p,cert, sizeof(p)-1);
    free(cert);
  } else {
    fprintf(stderr, "Certificate for appid [%s] not found\n",appId);
    strcpy(p, "dummy");
  }

  zoo_set_debug_level(ZOO_LOG_LEVEL_DEBUG);

  zh = zookeeper_init("localhost:3181", watcher, 10000, 0, 0, 0);
  if (!zh) {
    return errno;
  }
  if(zoo_add_auth(zh,"foo",p,strlen(p),0,0)!=ZOK)
    return 2;

  struct ACL CREATE_ONLY_ACL[] = {{ZOO_PERM_CREATE, ZOO_AUTH_IDS}};
  struct ACL_vector CREATE_ONLY = {1, CREATE_ONLY_ACL};
  int rc = zoo_create(zh,"/xyz","value", 5, &CREATE_ONLY, ZOO_EPHEMERAL,
                  buffer, sizeof(buffer)-1);

  /** this operation will fail with a ZNOAUTH error */
  int buflen= sizeof(buffer);
  struct Stat stat;
  rc = zoo_get(zh, "/xyz", 0, buffer, &buflen, &stat);
  if (rc) {
    fprintf(stderr, "Error %d for %s\n", rc, __LINE__);
  }

  zookeeper_close(zh);
  return 0;
}

```

--------------------------------

### AdminServer start() Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/admin/AdminServer.html

Starts the embedded administrative server. This method can throw an AdminServerException if the server fails to start.

```java
void start()
    throws AdminServer.AdminServerException
```

--------------------------------

### Incremental Reconfiguration - Java API Examples

Source: https://zookeeper.apache.org/doc/current/zookeeperReconfig.html

Examples demonstrating how to use the Java API for incremental reconfiguration, allowing servers to be added or removed from the current configuration without a full restart.

```APIDOC
## Incremental Reconfiguration - Java API

### Description
Demonstrates adding and removing servers from a ZooKeeper ensemble using the Java API.

### Method
`zk.reconfig(joiningServers, leavingServers, null, configVersion, stat)`

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example 1: Removing Servers
```java
List<String> leavingServers = new ArrayList<String>();
leavingServers.add("1");
leavingServers.add("2");
byte[] config = zk.reconfig(null, leavingServers, null, -1, new Stat());
```

### Request Example 2: Adding and Removing Servers
```java
List<String> leavingServers = new ArrayList<String>();
List<String> joiningServers = new ArrayList<String>();
leavingServers.add("1");
joiningServers.add("server.4=localhost:1234:1235;1236");
byte[] config = zk.reconfig(joiningServers, leavingServers, null, -1, new Stat());
String configStr = new String(config);
System.out.println(configStr);
```

### Response
#### Success Response (200)
- `byte[]`: The new configuration as a byte array.

#### Response Example
```
newconfig
```
```

--------------------------------

### Audit Log Entry for System Operations (Server Starter User)

Source: https://zookeeper.apache.org/doc/current/zookeeperAuditLogs.html

This example demonstrates an audit log entry for system operations when no specific server principal is associated, defaulting to the user who started the ZooKeeper server.

```text
user=root operation=serverStart result=success

```

--------------------------------

### LeaderZooKeeperServer startup()

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Starts up the leader ZooKeeper server.

```APIDOC
## startup()

### Description
Starts up the leader ZooKeeper server.

### Method
Method signature

### Endpoint
N/A (Java method)

### Parameters
None

### Request Example
N/A

### Response
N/A
```

--------------------------------

### Start Client Connection

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/ClientCnxn.html

Starts the client connection, including establishing the network connection and initializing necessary threads. This method must be called after construction.

```java
public void start()
```

--------------------------------

### start

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/ObserverMaster.html

Starts the ObserverMaster service.

```APIDOC
## start

### Description
Starts the ObserverMaster service, initializing its components and beginning its operation.

### Method
`start`

### Throws
- `IOException` - If an I/O error occurs during startup.
```

--------------------------------

### start

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/LeaderSessionTracker.html

Starts the LeaderSessionTracker. Overrides the start method from UpgradeableSessionTracker.

```APIDOC
## start

### Description
Starts the LeaderSessionTracker. This method overrides the start method inherited from UpgradeableSessionTracker.

### Method
`void start()`
```

--------------------------------

### startForwarding

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/ObserverMaster.html

Starts forwarding requests to a learner.

```APIDOC
## startForwarding

### Description
Initiates the forwarding of requests to a learner, starting from a specified last seen transaction ID.

### Method
`startForwarding`

### Parameters
- **learnerHandler** (LearnerHandler) - The handler for the learner to which requests will be forwarded.
- **lastSeenZxid** (long) - The last transaction ID seen by the learner.

### Response
- **long**: The new last seen transaction ID after forwarding.
```

--------------------------------

### ZooKeeperServerEmbedded start()

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Starts the embedded ZooKeeper server.

```APIDOC
## start()

### Description
Starts the embedded ZooKeeper server.

### Method
Method signature

### Endpoint
N/A (Java method)

### Parameters
None

### Request Example
N/A

### Response
N/A
```

--------------------------------

### Startup Server

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/NIOServerCnxnFactory.html

Starts up the ZooKeeper server with the given ZooKeeperServer instance and a flag indicating whether to start the server.

```APIDOC
## startup

### Description
Starts up the ZooKeeper server with the given ZooKeeperServer instance and a flag indicating whether to start the server.

### Method
```java
public void startup(ZooKeeperServer zks, boolean startServer) throws IOException, InterruptedException
```

### Parameters
* **zks** (ZooKeeperServer) - The ZooKeeperServer instance to start.
* **startServer** (boolean) - A flag indicating whether to start the server.

### Throws
* **IOException** - If an I/O error occurs.
* **InterruptedException** - If the thread is interrupted.
```

--------------------------------

### Starting ZooKeeper Ensemble

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/QuorumPeerMain.html

The main method is used to start the replicated ZooKeeper server. It requires a path to a configuration file as a command-line argument.

```APIDOC
## main

### Description
To start the replicated server specify the configuration file name on the command line.

### Method
`public static void main(String[] args)`

### Parameters
#### Path Parameters
- **args** (String[]) - Required - Path to the config file.
```

--------------------------------

### Start MetricsProvider

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/metrics/MetricsProvider.html

Starts the metrics provider, potentially initiating network endpoints or other necessary services. This method can throw an exception if the startup fails.

```java
void start()
    throws MetricsProviderLifeCycleException
```

--------------------------------

### NullMetricsProvider start Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/metrics/impl/NullMetricsProvider.html

Starts the NullMetricsProvider. This method is part of the MetricsProvider interface but is a no-operation in this implementation.

```java
public
void start()
           throws MetricsProviderLifeCycleException
```

--------------------------------

### start()

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/WorkerService.html

Starts the worker service and its associated thread pool.

```APIDOC
## start()

### Description
Starts the worker service.
```

--------------------------------

### start Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/FastLeaderElection.html

This method starts the sender and receiver threads.

```APIDOC
## start Method

### Description
This method starts the sender and receiver threads.

### Method
POST

### Endpoint
/zookeeper/server/quorum/FastLeaderElection/start
```

--------------------------------

### Start ZooKeeper Server

Source: https://zookeeper.apache.org/doc/current/zookeeperAdmin.html

Command to start a ZooKeeper server instance using the QuorumPeerMain class. Ensure all necessary JARs and configuration files are in the classpath.

```bash
$ java -cp zookeeper.jar:lib/*:conf org.apache.zookeeper.server.quorum.QuorumPeerMain zoo.conf

```

--------------------------------

### Start ZooKeeper Server

Source: https://zookeeper.apache.org/doc/current/zookeeperStarted.html

Command to start the ZooKeeper server in standalone mode. This script is typically found in the ZooKeeper installation's bin directory.

```bash
bin/zkServer.sh start

```

--------------------------------

### ControllerService start(ControllerServerConfig)

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Starts a new thread to run the controller, useful for in-process hosting like unit testing.

```APIDOC
## start(ControllerServerConfig config)

### Description
Starts a new thread to run the controller (useful when this service is hosted in process - such as during unit testing).

### Method
Method signature

### Endpoint
N/A (Java method)

### Parameters
- **config** (ControllerServerConfig) - Configuration for the controller service

### Request Example
N/A

### Response
N/A
```

--------------------------------

### DummyAdminServer.start()

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/admin/DummyAdminServer.html

Starts the DummyAdminServer. This method is a no-operation as the server is disabled.

```APIDOC
## start()

### Description
Starts the AdminServer. This is a no-operation for DummyAdminServer.

### Method
`void start()`

### Throws
`AdminServer.AdminServerException`
```

--------------------------------

### Command Execution via GET

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/admin/class-use/CommandResponse.html

Demonstrates how to execute commands using an HTTP GET request, which returns a CommandResponse.

```APIDOC
## GET /commands/{cmdName}

### Description
Executes a registered command via an HTTP GET request.

### Method
GET

### Endpoint
/commands/{cmdName}

### Parameters
#### Path Parameters
- **cmdName** (String) - Required - The name of the command to execute.

#### Query Parameters
- **kwargs** (Map<String, String>) - Optional - Additional parameters for the command.

### Response
#### Success Response (200)
- **CommandResponse** (CommandResponse) - The response from the executed command.

### Response Example
```json
{
  "response_field_1": "value1",
  "response_field_2": "value2"
}
```
```

--------------------------------

### ConnectionBean and ConnectionMXBean Methods

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Methods to get the start time of a connection.

```APIDOC
## getStartedTime()

### Description
Returns the time when the connection was started.

### Method
GET

### Endpoint
N/A (Method in ConnectionBean and ConnectionMXBean)

### Parameters
None

### Response
N/A (Returns a long value representing time)
```

--------------------------------

### Start MetricsProvider

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/metrics/impl/DefaultMetricsProvider.html

Starts the metrics provider, potentially initializing network endpoints or other resources. This method must be called before metrics can be collected or reported.

```java
public
void
start()
           throws MetricsProviderLifeCycleException
```

--------------------------------

### ZooKeeperServerBean and ZooKeeperServerMXBean Methods

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Methods to get the start time of the ZooKeeper server.

```APIDOC
## getStartTime()

### Description
Returns the time when the ZooKeeper server started.

### Method
GET

### Endpoint
N/A (Method in ZooKeeperServerBean and ZooKeeperServerMXBean)

### Parameters
None

### Response
N/A (Returns a long value representing time)
```

--------------------------------

### LeaderElectionBean and LeaderElectionMXBean Methods

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Methods to get the start time of the leader election.

```APIDOC
## getStartTime()

### Description
Returns the time when the leader election started.

### Method
GET

### Endpoint
N/A (Method in LeaderElectionBean and LeaderElectionMXBean)

### Parameters
None

### Response
N/A (Returns a long value representing time)
```

--------------------------------

### QuorumPeerMain.main

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

To start the replicated server specify the configuration file name on the command line.

```APIDOC
## main(String[]) - Static method in class org.apache.zookeeper.server.quorum.QuorumPeerMain

### Description
To start the replicated server specify the configuration file name on the command line.

### Method
static main

### Parameters
#### Path Parameters
- **args** (String[]) - Required - Command line arguments, including the configuration file name.
```

--------------------------------

### ControllerService.main

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Starts the ControllerService as a stand alone app.

```APIDOC
## main(String[]) - Static method in class org.apache.zookeeper.server.controller.ControllerService

### Description
Starts the ControllerService as a stand alone app.

### Method
static main

### Parameters
#### Path Parameters
- **args** (String[]) - Required - Command line arguments.
```

--------------------------------

### FileTxnSnapLog.readTxnLog(long zxid)

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/persistence/class-use/TxnLog.TxnIterator.html

Gets a TxnIterator for iterating through the transaction log starting at a given zxid.

```APIDOC
## FileTxnSnapLog.readTxnLog(long zxid)

### Description
Gets a TxnIterator for iterating through the transaction log starting at a given zxid.

### Method
`readTxnLog`

### Parameters
#### Path Parameters
- **zxid** (long) - Required - The starting transaction ID.

### Return Value
- **TxnLog.TxnIterator** - An iterator for the transaction logs.
```

--------------------------------

### Start Dockerized Jepsen Environment

Source: https://zookeeper.apache.org/doc/current/zookeeperTools.html

Shell script to initialize and start the Docker containers for the Jepsen environment. This may take a significant amount of time on the first run.

```bash
./up.sh
```

--------------------------------

### Get Started and Start Times for ZooKeeper Connections and Leaders

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all

Methods for retrieving the time when a connection or leader election process started. These are available through `ConnectionBean`, `ConnectionMXBean`, `LeaderElectionBean`, `LeaderElectionMXBean`, `ServerBean`, `ServerMXBean`, `ZooKeeperServerBean`, and `ZooKeeperServerMXBean`.

```java
getStartedTime()
getStartTime()
```

--------------------------------

### Non-incremental Reconfiguration - Java API Example

Source: https://zookeeper.apache.org/doc/current/zookeeperReconfig.html

Example showing how to use the Java API for non-incremental reconfiguration, where a complete specification of the new dynamic system configuration is provided.

```APIDOC
## Non-incremental Reconfiguration - Java API

### Description
Demonstrates replacing the entire ZooKeeper ensemble configuration with a new set of members using the Java API.

### Method
`zk.reconfig(null, null, newMembers, configVersion, stat)`

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example:
```java
List<String> newMembers = new ArrayList<String>();
newMembers.add("server.1=1111:1234:1235;1236");
newMembers.add("server.2=1112:1237:1238;1239");
newMembers.add("server.3=1114:1240:1241:observer;1242");

byte[] config = zk.reconfig(null, null, newMembers, -1, new Stat());

String configStr = new String(config);
System.out.println(configStr);
```

### Response
#### Success Response (200)
- `byte[]`: The new configuration as a byte array.

#### Response Example
```
newconfig
```
```

--------------------------------

### Get Initial Configuration String

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/QuorumPeerConfig.html

Retrieves the initial configuration as a String.

```java
public String getInitialConfig()
```

--------------------------------

### Get Connection Start Time

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/ConnectionBean.html

Retrieves the time when the connection was established. Implements the getStartedTime method from the ConnectionMXBean interface.

```java
public String getStartedTime()
```

--------------------------------

### setupRequestProcessors

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/ZooKeeperServer.html

Sets up the request processors.

```APIDOC
## setupRequestProcessors

### Description
Sets up the request processors.

### Method Signature
`protected void setupRequestProcessors()`
```

--------------------------------

### FileTxnSnapLog.readTxnLog(long zxid, boolean fastForward)

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/persistence/class-use/TxnLog.TxnIterator.html

Gets a TxnIterator for iterating through the transaction log starting at a given zxid, with an option for fast-forwarding.

```APIDOC
## FileTxnSnapLog.readTxnLog(long zxid, boolean fastForward)

### Description
Gets a TxnIterator for iterating through the transaction log starting at a given zxid. The `fastForward` parameter can be used to optimize the reading process.

### Method
`readTxnLog`

### Parameters
#### Path Parameters
- **zxid** (long) - Required - The starting transaction ID.
- **fastForward** (boolean) - Required - If true, enables fast-forwarding.

### Return Value
- **TxnLog.TxnIterator** - An iterator for the transaction logs.
```

--------------------------------

### startdata

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/ZooKeeperServer.html

Starts the data processing for the server.

```APIDOC
## startdata

### Description
Starts the data processing for the server.

### Method Signature
`void startdata()`
```

--------------------------------

### Get ZooKeeper Server User

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/audit/ZKAuditProvider.html

Retrieves the username of the user who started the ZooKeeper server. If no user is logged in, it defaults to the system user.

```java
public static String getZKUser()
```

--------------------------------

### Get Snapshot Logs

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/persistence/FileTxnSnapLog.html

Retrieves snapshot log files that may contain transactions newer than the specified zxid. This includes logs with a starting zxid greater than the given zxid, and the newest transaction log with a starting zxid less than the given zxid.

```java
public File[] getSnapshotLogs(long zxid)
```

--------------------------------

### Start Prometheus Server with ZooKeeper Configuration

Source: https://zookeeper.apache.org/doc/current/zookeeperMonitor.html

This command starts the Prometheus server, pointing it to the configuration file for scraping ZooKeeper metrics. It also specifies the web listen address and the path for time-series data storage.

```bash
nohup /tmp/prometheus \
    --config.file /tmp/test-zk.yaml \
    --web.listen-address ":9090" \
    --storage.tsdb.path "/tmp/test-zk.data" >> /tmp/test-zk.log  2>&1 &
```

--------------------------------

### initial_configuration

Source: https://zookeeper.apache.org/doc/current/zookeeperAdmin.html

Retrieves the text of the configuration file used to start the peer.

```APIDOC
## initial_configuration

### Description
Print the text of the configuration file used to start the peer.

### Method
GET

### Endpoint
/commands/icfg

### Response
#### Success Response (200)
Returns "initial_configuration".
```

--------------------------------

### Get Leader Election Start Time

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/LeaderElectionMXBean.html

Retrieves the timestamp indicating when the leader election process began. This method is part of the LeaderElectionMXBean interface.

```java
String getStartTime()
```

--------------------------------

### main Method - SnapshotRecursiveSummary

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/SnapshotRecursiveSummary.html

Entry point for the SnapshotRecursiveSummary tool. It takes snapshot file, starting node, and max depth as arguments. Ensure arguments are provided in the correct order.

```java
public static void main(String[] args)
                 throws Exception
```

--------------------------------

### setupRequestProcessors

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/LeaderZooKeeperServer.html

Sets up the request processing pipeline for the leader.

```APIDOC
## setupRequestProcessors

### Description
Configures the chain of processors responsible for handling incoming requests on the leader.

### Method
protected void setupRequestProcessors()

### Overrides
`setupRequestProcessors` in class `ZooKeeperServer`
```

--------------------------------

### Get Content Type - Java

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all

Specifies the MIME type of the output produced by a command outputter. Examples include 'application/json'. This is used in the admin interface for formatting responses.

```Java
getContentType() - Method in interface org.apache.zookeeper.server.admin.CommandOutputter
    
The MIME type of this output (e.g., "application/json") 

getContentType() - Method in class org.apache.zookeeper.server.admin.JsonOutputter
     

getContentType() - Method in class org.apache.zookeeper.server.admin.StreamOutputter
     
```

--------------------------------

### MetricsProvider configure() and start()

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/metrics/class-use/MetricsProviderLifeCycleException.html

Methods in the MetricsProvider interface that can throw MetricsProviderLifeCycleException during configuration or startup.

```APIDOC
## MetricsProvider configure(Properties configuration)

### Description
Configure the provider.

### Method
void

### Parameters
- configuration (Properties) - The configuration properties for the metrics provider.

### Throws
MetricsProviderLifeCycleException - If an error occurs during configuration.
```

```APIDOC
## MetricsProvider start()

### Description
Start the provider.

### Method
void

### Throws
MetricsProviderLifeCycleException - If an error occurs during startup.
```

--------------------------------

### start Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/CommitProcessor.html

Starts the CommitProcessor. Overrides the start method from the Thread class.

```java
public’void’ start()
```

--------------------------------

### ClientX509Util Constructor

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/common/ClientX509Util.html

Initializes a new instance of the ClientX509Util class.

```APIDOC
## ClientX509Util()

### Description
Initializes a new instance of the ClientX509Util class.

### Constructor
`public ClientX509Util()`
```

--------------------------------

### zkTxnLogToolkit.sh Usage Help

Source: https://zookeeper.apache.org/doc/current/zookeeperTools.html

Running `zkTxnLogToolkit.sh` without parameters or with `-h` displays its help message, outlining available options for transaction log manipulation.

```bash
$ bin/zkTxnLogToolkit.sh
usage: TxnLogToolkit [-dhrv] txn_log_file_name
-d,--dump      Dump mode. Dump all entries of the log file. (this is the default)
-h,--help      Print help message
-r,--recover   Recovery mode. Re-calculate CRC for broken entries.
-v,--verbose   Be verbose in recovery mode: print all entries, not just fixed ones.
-y,--yes       Non-interactive mode: repair all CRC errors without asking

```

--------------------------------

### Commands.SystemPropertiesCommand

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/allclasses-index.html

Lists all defined system properties.

```APIDOC
## Commands.SystemPropertiesCommand

### Description
All defined system properties.

### Class
Commands.SystemPropertiesCommand
```

--------------------------------

### ReadOnlyZooKeeperServer startup()

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Starts up the read-only ZooKeeper server.

```APIDOC
## startup()

### Description
Starts up the read-only ZooKeeper server.

### Method
Method signature

### Endpoint
N/A (Java method)

### Parameters
None

### Request Example
N/A

### Response
N/A
```

--------------------------------

### main Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/ZooKeeperServerMain.html

The entry point for the ZooKeeper server application. It starts the server with the provided command-line arguments.

```APIDOC
## main(String[] args)

### Description
Starts and runs a standalone ZooKeeper server. This is the main entry point for the application.

### Method
`public static void main(String[] args)`

### Parameters
* **args** (String[]) - Command-line arguments for configuring and starting the server.
```

--------------------------------

### Start Metrics Provider

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/metrics/impl/MetricsProviderBootstrap.html

Starts a metrics provider based on the provided class name and configuration properties. This method can throw a MetricsProviderLifeCycleException if the provider fails to start.

```java
public static MetricsProvider startMetricsProvider(String metricsProviderClassName,
                                                   Properties configuration)
                                            throws MetricsProviderLifeCycleException

```

--------------------------------

### Op.create with CreateOptions

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/class-use/CreateOptions.html

Demonstrates how to construct a create operation using CreateOptions. This method allows for specifying custom options when creating a znode.

```APIDOC
## Op.create(String path, byte[] data, CreateOptions options)

### Description
Constructs a create operation which uses `ZooDefs.OpCode.create2` if no one is inferred from create mode.

### Method
`static Op`

### Parameters
- **path** (String) - The path of the znode to create.
- **data** (byte[]) - The data to be stored in the znode.
- **options** (CreateOptions) - The options for the create operation.
```

--------------------------------

### main

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/SnapshotFormatter.html

The main method serves as the entry point for the SnapshotFormatter utility. It accepts a snapshot file path as an argument and can be invoked directly or through the zkSnapShotToolkit.sh script.

```APIDOC
## main

### Description
Entry point for the SnapshotFormatter utility. Dumps a snapshot file to stdout.

### Method
`public static void main(String[] args) throws Exception`

### Parameters
* `args` (String[]) - Command line arguments. Expected format: `snapshot_file`.

### Throws
* `Exception` - If an error occurs during execution.
```

--------------------------------

### Server Start Time

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/ZooKeeperServerMXBean.html

Retrieves the timestamp when the ZooKeeper server was started.

```APIDOC
## getStartTime

### Description
Returns the time the server was started.

### Method
GET

### Endpoint
/jmx/metrics/startTime

### Response
#### Success Response (200)
- **startTime** (string) - The time the server was started.
```

--------------------------------

### ZooKeeper Snapshot Comparer Help Page

Source: https://zookeeper.apache.org/doc/current/zookeeperTools.html

Displays the usage instructions and available arguments for the snapshot comparer tool when run without valid arguments.

```bash
usage: java -cp <classPath> org.apache.zookeeper.server.SnapshotComparer
 -b,--bytes <BYTETHRESHOLD>   (Required) The node data delta size threshold, in bytes, for printing the node.
 -d,--debug                   Use debug output.
 -i,--interactive             Enter interactive mode.
 -l,--left <LEFT>             (Required) The left snapshot file.
 -n,--nodes <NODETHRESHOLD>   (Required) The descendant node delta size threshold, in nodes, for printing the node.
 -r,--right <RIGHT>           (Required) The snapshot file.

```

--------------------------------

### Commands.InitialConfigurationCommand

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/allclasses-index.html

Represents a command to retrieve the initial configuration.

```APIDOC
## Commands.InitialConfigurationCommand

### Description

### Class
Commands.InitialConfigurationCommand
```

--------------------------------

### setupRequestProcessors (FollowerZooKeeperServer)

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Sets up the request processors for a Follower ZooKeeper server.

```APIDOC
## setupRequestProcessors

### Description
Sets up the request processors for a Follower ZooKeeper server.

### Method
Instance method

### Class
org.apache.zookeeper.server.quorum.FollowerZooKeeperServer
```

--------------------------------

### setupRequestProcessors

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/ObserverZooKeeperServer.html

Sets up the request processors for an Observer: firstProcessor->commitProcessor->finalProcessor.

```APIDOC
## setupRequestProcessors

### Description
Set up the request processors for an Observer: firstProcesor->commitProcessor->finalProcessor.

Overrides:
    `setupRequestProcessors` in class `ZooKeeperServer`

### Method
protected void setupRequestProcessors()

```

--------------------------------

### ZooKeeperServerEmbedded start(long)

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Starts the embedded ZooKeeper server with a specified timeout.

```APIDOC
## start(long timeout)

### Description
Starts the embedded ZooKeeper server with a specified timeout.

### Method
Method signature

### Endpoint
N/A (Java method)

### Parameters
- **timeout** (long) - Description of the timeout parameter

### Request Example
N/A

### Response
N/A
```

--------------------------------

### Get Op Kind

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/Op.html

Gets the kind of an Op, returning an OpKind value.

```java
public Op.OpKind getKind()
```

--------------------------------

### Get Initial Configuration

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/QuorumPeerConfig.html

Retrieves the initial configuration string.

```APIDOC
## getInitialConfig()

### Description
Retrieves the initial configuration string.

### Method
```java
public String getInitialConfig()
```

### Returns
- `String` - The initial configuration.
```

--------------------------------

### Initialize ZooKeeper Data Directory and myid File

Source: https://zookeeper.apache.org/doc/current/zookeeperAdmin.html

The zkServer-initialize.sh script is provided to create necessary data and transaction log directories. It can also optionally set up the myid file. This script requires a configuration file to be present.

```bash
./zkServer-initialize.sh
```

--------------------------------

### ZooKeeper CLI Get Command

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Represents the 'get' command for the ZooKeeper command-line interface.

```APIDOC
## GetCommand (Class)

### Description
Represents the 'get' command for the ZooKeeper command-line interface.

### Constructors
- **GetCommand()**
- **GetCommand(List<String>)**
```

--------------------------------

### ServerCnxnFactory startup(ZooKeeperServer)

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Starts up the connection factory with the given ZooKeeper server instance.

```APIDOC
## startup(ZooKeeperServer zks)

### Description
Starts up the connection factory with the given ZooKeeper server instance.

### Method
Method signature

### Endpoint
N/A (Java method)

### Parameters
- **zks** (ZooKeeperServer) - The ZooKeeper server instance.

### Request Example
N/A

### Response
N/A
```

--------------------------------

### Get Op Type Code

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/Op.html

Gets the integer type code for an Op, which should correspond to ZooDefs.OpCode.

```java
public int getType()
```

--------------------------------

### Start Embedded ZooKeeper Server with Timeout

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/embedded/ZooKeeperServerEmbedded.html

Starts the embedded ZooKeeper server with a specified startup timeout.

```APIDOC
## start

### Description
Start the embedded ZooKeeper server with a specified timeout.

### Method
```java
void start(long startupTimeout)
    throws Exception
```

### Parameters
#### Path Parameters
- **startupTimeout** (long) - time to wait in millis for the server to start

### Throws
* `Exception` - If the server fails to start within the given timeout.
```

--------------------------------

### start

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/metrics/MetricsProvider.html

Starts the MetricsProvider. This method is called when the ZooKeeper system is ready to begin collecting and publishing metrics.

```APIDOC
## Method: start

### Description
Start the provider. For instance, such method will start a network endpoint.

### Signature
```java
void start() throws MetricsProviderLifeCycleException
```

### Throws
*   `MetricsProviderLifeCycleException` - In case of failure during startup.
```

--------------------------------

### setupRequestProcessors (LeaderZooKeeperServer)

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Sets up the request processors for a Leader ZooKeeper server.

```APIDOC
## setupRequestProcessors

### Description
Sets up the request processors for a Leader ZooKeeper server.

### Method
Instance method

### Class
org.apache.zookeeper.server.quorum.LeaderZooKeeperServer
```

--------------------------------

### InitialConfigurationCommand runGet

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/admin/Commands.InitialConfigurationCommand.html

Executes the InitialConfigurationCommand for an HTTP GET request. This command retrieves the initial configuration of the ZooKeeper server.

```APIDOC
## GET InitialConfigurationCommand

### Description
Retrieves the initial configuration of the ZooKeeper server.

### Method
GET

### Endpoint
/commands/initial-configuration

### Parameters
#### Query Parameters
- **zkServer** (ZooKeeperServer) - Required - The ZooKeeper server instance.
- **kwargs** (Map<String, String>) - Optional - Keyword arguments for the command.

### Request Example
```json
{
  "zkServer": "<ZooKeeperServer instance>",
  "kwargs": {}
}
```

### Response
#### Success Response (200)
- **command** (string) - The primary name of the command.
- **error** (string) - An error message if the command failed, otherwise null.
- **configuration** (string) - The initial configuration of the ZooKeeper server.

#### Response Example
```json
{
  "command": "initial-configuration",
  "error": null,
  "configuration": "server.1=host1:2888:3888\nserver.2=host2:2888:3888"
}
```
```

--------------------------------

### Start Thread If Needed Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/Login.html

Starts the internal login management thread if it's not already running.

```java
public
void startThreadIfNeeded()
```

--------------------------------

### Start Embedded ZooKeeper Server

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/embedded/ZooKeeperServerEmbedded.html

Starts the embedded ZooKeeper server. The server will run within the same Java process.

```APIDOC
## start

### Description
Start the embedded ZooKeeper server.

### Method
```java
void start()
    throws Exception
```

### Throws
* `Exception` - If the server fails to start.
```

--------------------------------

### waitForStartup

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/Leader.html

Waits for the leader to complete its startup process.

```APIDOC
## waitForStartup

```java
public void waitForStartup()
```

### Description
Blocks until the leader has completed its initialization and startup procedures, ensuring it is ready to serve requests.
```

--------------------------------

### ControllerService Start Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/controller/ControllerService.html

Starts the controller in a new thread. This is useful when the service is hosted in-process, such as during unit testing.

```java
public Thread start(ControllerServerConfig controllerConfig)
```

--------------------------------

### DummyAdminServer Constructor

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/admin/DummyAdminServer.html

Initializes a new instance of the DummyAdminServer class.

```APIDOC
## DummyAdminServer()

### Description
Constructs a new DummyAdminServer.

### Constructor
`DummyAdminServer()`
```

--------------------------------

### Initialize

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/QuorumPeer.html

Initializes the quorum peer.

```APIDOC
## initialize

### Description
Initializes the quorum peer, performing necessary setup operations.

### Method
POST

### Endpoint
/quorum/initialize

### Throws
- `SaslException`
```

--------------------------------

### ZooKeeper Server Admin Get Command

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Represents an HTTP GET request within the ZooKeeper server administration interface.

```APIDOC
## GetCommand (Class)

### Description
Command that represents HTTP GET request.

### Constructors
- **GetCommand(List<String>)**
- **GetCommand(List<String>, boolean)**
- **GetCommand(List<String>, boolean, AuthRequest)**
```

--------------------------------

### setupRequestProcessors (ObserverZooKeeperServer)

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Sets up the request processors for an Observer ZooKeeper server.

```APIDOC
## setupRequestProcessors

### Description
Sets up the request processors for an Observer: firstProcesor->commitProcessor->finalProcessor.

### Method
Instance method

### Class
org.apache.zookeeper.server.quorum.ObserverZooKeeperServer
```

--------------------------------

### Start ContainerManager Timer

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/ContainerManager.html

Starts or restarts the timer that manages the periodic checking of containers. This method can be safely called multiple times.

```java
public	void	start()
```

--------------------------------

### setupRequestProcessors

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/ZooKeeperServer.html

Configures and sets up the request processing pipeline. This is a protected method.

```APIDOC
## setupRequestProcessors

### Description
Sets up the request processing pipeline.

### Method
protected void setupRequestProcessors()
```

--------------------------------

### DirsCommand GET Request

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/admin/Commands.DirsCommand.html

This command can be invoked via an HTTP GET request to retrieve information about ZooKeeper data and snapshot directories.

```APIDOC
## GET /commands/dirs

### Description
Retrieves information on ZK datadir and snapdir size in bytes.

### Method
GET

### Endpoint
/commands/dirs

### Parameters
#### Query Parameters
- **zkServer** (ZooKeeperServer) - Required - The ZooKeeper server instance.
- **kwargs** (Map<String, String>) - Optional - Keyword arguments for the command.

### Response
#### Success Response (200)
- **CommandResponse** - An object containing the command's primary name and the response data.
  - **command** (string) - The primary name of the command.
  - **error** (string) - An error message if the command failed, otherwise null.
  - **datadirSize** (long) - The size of the data directory in bytes.
  - **snapdirSize** (long) - The size of the snapshot directory in bytes.

### Request Example
```json
{
  "zkServer": "<ZooKeeperServer instance>",
  "kwargs": {}
}
```

### Response Example
```json
{
  "command": "dirs",
  "error": null,
  "datadirSize": 1024000,
  "snapdirSize": 512000
}
```
```

--------------------------------

### IsroCommand GET Request

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/admin/Commands.IsroCommand.html

This snippet details how to run the IsroCommand for an HTTP GET request to check the server's read-only status.

```APIDOC
## IsroCommand GET Request

### Description
Checks if the ZooKeeper server is in read-only mode. The returned map contains a boolean value for the key "is_read_only".

### Method
GET

### Endpoint
/commands/isro (Assumed based on typical command patterns, not explicitly stated in source)

### Parameters
#### Query Parameters
None explicitly documented for this command.

#### Request Body
None

### Request Example
(No specific request body example provided for GET)

### Response
#### Success Response (200)
- **is_read_only** (Boolean) - True if the server is in read-only mode, false otherwise.

#### Response Example
```json
{
  "is_read_only": false
}
```
```

--------------------------------

### main Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/SnapshotRecursiveSummary.html

The entry point for the SnapshotRecursiveSummary tool, allowing it to be run from the command line.

```APIDOC
## Method: main

### Description
Executes the SnapshotRecursiveSummary tool from the command line.

### Signature
`public static void main(String[] args) throws Exception`

### Usage
`SnapshotRecursiveSummary snapshot_file starting_node max_depth`

### Throws
* `Exception`
```

--------------------------------

### main

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/ServerAdminClient.html

The main entry point for the ServerAdminClient application.

```APIDOC
## main

### Description
The main entry point for the ServerAdminClient application. This method can be used to run administrative commands from the command line.

### Method
`static void main(String[] args)`

### Parameters
* **args** (String[]) - An array of strings representing command-line arguments.
```

--------------------------------

### LearnerZooKeeperServer Constructor

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/LearnerZooKeeperServer.html

Initializes a new instance of LearnerZooKeeperServer with the specified parameters.

```APIDOC
## LearnerZooKeeperServer Constructor

### Description
Initializes a new instance of LearnerZooKeeperServer.

### Parameters
- **logFactory** (FileTxnSnapLog) - The transaction and snapshot log factory.
- **tickTime** (int) - The time interval in milliseconds that defines a tick.
- **minSessionTimeout** (int) - The minimum session timeout in milliseconds.
- **maxSessionTimeout** (int) - The maximum session timeout in milliseconds.
- **listenBacklog** (int) - The backlog for the listening socket.
- **zkDb** (ZKDatabase) - The ZooKeeper database.
- **self** (QuorumPeer) - The QuorumPeer instance representing this server.
```

--------------------------------

### Get Sync Limit

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/QuorumBean.html

Retrieves the sync limit, which is the number of ticks that can pass between sending a request and getting an acknowledgment. Implemented from QuorumMXBean interface.

```java
public	int	getSyncLimit()
```

--------------------------------

### initialize Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/ProposalRequestProcessor.html

Initializes the ProposalRequestProcessor.

```APIDOC
## initialize Method

### Description
Initializes this processor. This method should be called after the processor has been constructed.

### Signature
```java
public void initialize()
```
```

--------------------------------

### Get Maximum Connections

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/ServerCnxnHelper.html

Gets the maximum number of connections allowed in ZooKeeper. This method is static and takes two ServerCnxnFactory objects as arguments.

```java
public static int getMaxCnxns​(ServerCnxnFactory secureServerCnxnFactory,
                              ServerCnxnFactory serverCnxnFactory)
```

--------------------------------

### Get all DigestOpCode constants

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/PrepRequestProcessor.DigestOpCode.html

Use the values() method to get an array of all enum constants in the order they are declared. This is useful for iterating through all possible operations.

```java
public static
PrepRequestProcessor.DigestOpCode[]
values()
```

```java
for (PrepRequestProcessor.DigestOpCode c : PrepRequestProcessor.DigestOpCode.values())
    System.out.println(c);
```

--------------------------------

### MetricsProviderBootstrap startMetricsProvider(String, Properties)

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Starts the metrics provider with the given name and properties.

```APIDOC
## startMetricsProvider(String name, Properties properties)

### Description
Starts the metrics provider with the given name and properties.

### Method
Static method

### Endpoint
N/A (Java method)

### Parameters
- **name** (String) - The name of the metrics provider.
- **properties** (Properties) - The properties for the metrics provider.

### Request Example
N/A

### Response
N/A
```

--------------------------------

### getStartTime Method

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/quorum/ServerBean.html

Retrieves the start time of the ZooKeeper server.

```APIDOC
## getStartTime Method

### Description
Retrieves the start time of the ZooKeeper server.

### Method
`String getStartTime()`

### Returns
the start time the server
```

--------------------------------

### MetricsProviderBootstrap startMetricsProvider()

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/metrics/class-use/MetricsProviderLifeCycleException.html

Static method to start a metrics provider by its class name, which may throw MetricsProviderLifeCycleException.

```APIDOC
## MetricsProviderBootstrap startMetricsProvider(String metricsProviderClassName, Properties configuration)

### Description
Starts a metrics provider using the specified class name and configuration.

### Method
static MetricsProvider

### Parameters
- metricsProviderClassName (String) - The fully qualified class name of the metrics provider to start.
- configuration (Properties) - The configuration properties for the metrics provider.

### Throws
MetricsProviderLifeCycleException - If an error occurs during the startup of the metrics provider.
```

--------------------------------

### setupRequestProcessors (ZooKeeperServer)

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/index-all.html

Sets up the request processors for the ZooKeeper server.

```APIDOC
## setupRequestProcessors

### Description
Sets up the request processors for the ZooKeeper server.

### Method
Instance method

### Class
org.apache.zookeeper.server.ZooKeeperServer
```

--------------------------------

### Example zoo.cfg with Oracle Path

Source: https://zookeeper.apache.org/doc/current/zookeeperOracleQuorums.html

A complete zoo.cfg example demonstrating the correct way to specify the oraclePath along with other static ZooKeeper parameters for a two-instance ensemble.

```properties
dataDir=/data
dataLogDir=/datalog
tickTime=2000
initLimit=5
syncLimit=2
autopurge.snapRetainCount=3
autopurge.purgeInterval=0
maxClientCnxns=60
standaloneEnabled=true
admin.enableServer=true
oraclePath=/chassis/mastership
server.1=0.0.0.0:2888:3888;2181
server.2=hw1:2888:3888;2181

```

--------------------------------

### ZKClientConfig Constructors

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/client/ZKClientConfig.html

Provides details on how to instantiate ZKClientConfig, including deprecated methods and the recommended constructor.

```APIDOC
## ZKClientConfig Constructors

### `ZKClientConfig()`

Default constructor for ZKClientConfig.

### `ZKClientConfig(File configFile)`

**Deprecated.** Use `ZKClientConfig(Path configPath)` instead.

Throws:
    `QuorumPeerConfig.ConfigException`

### `ZKClientConfig(String configPath)`

**Deprecated.** Use `ZKClientConfig(Path configPath)` instead.

Throws:
    `QuorumPeerConfig.ConfigException`

### `ZKClientConfig(Path configPath)`

Constructor that takes a Path object for the configuration file.

Throws:
    `ConfigException`
```

--------------------------------

### Log ZooKeeper Server Start and Stop Events

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/audit/ZKAuditProvider.html

Adds an audit log entry for the successful start of the ZooKeeper server and registers a log for server stop events.

```java
public static void addZKStartStopAuditLog()
```

--------------------------------

### zkSnapShotToolkit.sh Help

Source: https://zookeeper.apache.org/doc/current/zookeeperTools.html

Running `zkSnapShotToolkit.sh` without arguments displays its usage instructions, indicating options for dumping node data or JSON output.

```bash
# help
./zkSnapShotToolkit.sh
/usr/bin/java
USAGE: SnapshotFormatter [-d|-json] snapshot_file
       -d dump the data for each znode
       -json dump znode info in json format

```

--------------------------------

### Run ZooKeeper GET Command

Source: https://zookeeper.apache.org/doc/current/apidocs/zookeeper-server/org/apache/zookeeper/server/admin/Commands.html

Executes a registered command using a GET request. This method is suitable for commands that do not require a request body and primarily use parameters.

```java
public static CommandResponse runGetCommand(String cmdName,
                                            ZooKeeperServer zkServer,
                                            Map<String, String> kwargs,
                                            String authInfo,
                                            javax.servlet.http.HttpServletRequest request)
```