### start Method

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/plugins/PluginMetricMaker

Invoked when the server is starting.

```APIDOC
## start Method

### Description
Invoked when the server is starting. This method is part of the LifecycleListener interface.

### Method
`start`

### Endpoint
N/A (Method within a class)

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
```json
{
  "example": "start()"
}
```

### Response
#### Success Response (200)
None

#### Response Example
```json
{
  "example": "void"
}
```
```

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

### start() Method Implementation (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/git/GarbageCollectionLogFile

The implementation of the start() method, inherited from the LifecycleListener interface. This method is invoked when the server is starting.

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

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

### POST /plugins

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/plugins/InstallPlugin

This endpoint allows for the installation of a new plugin into Gerrit. It processes the provided input and returns information about the installed plugin.

```APIDOC
## POST /plugins

### Description
This endpoint allows for the installation of a new plugin into Gerrit. It processes the provided input and returns information about the installed plugin.

### Method
POST

### Endpoint
/plugins

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
- **input** (InstallPluginInput) - Required - The input object containing details for plugin installation.
- **name** (String) - Optional - The name of the plugin to install.
- **created** (boolean) - Optional - Indicates if the plugin was newly created during installation.

### Request Example
```json
{
  "input": {
    "pluginData": "..."
  },
  "name": "my-plugin",
  "created": true
}
```

### Response
#### Success Response (200 OK)
- **pluginInfo** (PluginInfo) - Information about the installed plugin.

#### Response Example
```json
{
  "pluginInfo": {
    "name": "my-plugin",
    "version": "1.0.0"
  }
}
```

#### Error Response
- **4xx** (RestApiException) - Indicates a client-side error during the request.
- **500** (Internal Server Error) - Indicates a server-side error.
```

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

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### Get Start Line of Modifiable Content (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/patch/MagicFile

This method returns the starting line number (1-based) of the modifiable content within the MagicFile.

```java
public int getStartLineOfModifiableContent()
```

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

### InitFlags Constructor with SitePaths and SecureStore

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/pgm/init/api/InitFlags

Initializes InitFlags with site paths, secure store, a list of plugins to install, and a flag to install all plugins. It can throw IOException or ConfigInvalidException.

```java
public InitFlags(SitePaths site, SecureStore secureStore, List<String> installPlugins, Boolean installAllPlugins) throws IOException, org.eclipse.jgit.errors.ConfigInvalidException
```

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

### List Installed Plugins

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/plugins/ListPlugins

This endpoint allows you to list installed plugins in Gerrit. You can filter the results by prefix, substring, regex, and control pagination with limit and start parameters.

```APIDOC
## GET /plugins

### Description
Lists installed plugins. Supports filtering by prefix, substring, and regex, as well as pagination.

### Method
GET

### Endpoint
/plugins

### Query Parameters
- **all** (boolean) - Optional - If true, list all plugins. Otherwise, only list plugins visible to the caller.
- **limit** (int) - Optional - Maximum number of plugins to return.
- **start** (int) - Optional - The index of the first plugin to return.
- **matchPrefix** (string) - Optional - If set, only plugins with names starting with this prefix are returned.
- **matchSubstring** (string) - Optional - If set, only plugins with names containing this substring are returned.
- **matchRegex** (string) - Optional - If set, only plugins with names matching this regular expression are returned.

### Request Example
```json
{
  "example": ""
}
```

### Response
#### Success Response (200)
- **plugins** (object) - A map where keys are plugin names and values are PluginInfo objects.
  - **name** (string) - The name of the plugin.
  - **version** (string) - The version of the plugin.
  - **id** (string) - The ID of the plugin.
  - **is_enabled** (boolean) - Whether the plugin is enabled.
  - **is_active** (boolean) - Whether the plugin is active.

#### Response Example
```json
{
  "example": "{\n  \"plugin-name-1\": {\n    \"name\": \"plugin-name-1\",\n    \"version\": \"1.0.0\",\n    \"id\": \"com.example.plugin1\",\n    \"isEnabled\": true,\n    \"isActive\": true\n  },\n  \"plugin-name-2\": {\n    \"name\": \"plugin-name-2\",\n    \"version\": \"2.1.0\",\n    \"id\": \"com.example.plugin2\",\n    \"isEnabled\": true,\n    \"isActive\": false\n  }\n}"
}
```

### Errors
- **400 Bad Request** - The request was incorrectly specified and cannot be handled.
- **500 Internal Server Error** - An unexpected error occurred on the server.
```

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

### Get Plugin Name in Java

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/extensions/webui/WebUiPlugin

This method returns the installed name of the plugin that provides the Web UI feature.

```java
public final String getPluginName()
```

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

### InitFlags installAllPlugins Field

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/pgm/init/api/InitFlags

Final boolean flag indicating whether all available plugins should be installed.

```java
public final boolean installAllPlugins
```

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

### OnlineReindexer Methods

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/index/OnlineReindexer

Methods for managing the online reindexing process, including starting, checking status, getting version, and activating the index.

```APIDOC
## OnlineReindexer Methods

### Method: start

### Description
Starts the background process for reindexing documents in the search index.

### Method
`start()`

### Endpoint
N/A (Instance Method)

### Parameters
None

### Request Example
```json
{
  "example": "Not applicable for method call"
}
```

### Response
#### Success Response (void)
This method does not return a value.

#### Response Example
```json
{
  "example": "Not applicable"
}
```

---

### Method: isRunning

### Description
Checks if the background indexer is currently running.

### Method
`isRunning()`

### Endpoint
N/A (Instance Method)

### Parameters
None

### Request Example
```json
{
  "example": "Not applicable for method call"
}
```

### Response
#### Success Response (boolean)
Returns `true` if the background indexer is currently running, `false` otherwise.

#### Response Example
```json
{
  "example": "true"
}
```

---

### Method: getVersion

### Description
Returns the index version that this indexer is creating documents for.

### Method
`getVersion()`

### Endpoint
N/A (Instance Method)

### Parameters
None

### Request Example
```json
{
  "example": "Not applicable for method call"
}
```

### Response
#### Success Response (int)
Returns the current index version as an integer.

#### Response Example
```json
{
  "example": "3"
}
```

---

### Method: activateIndex

### Description
Switches the search index from the old version to the new version. This method should be called when the new version is fully ready.

### Method
`activateIndex()`

### Endpoint
N/A (Instance Method)

### Parameters
None

### Request Example
```json
{
  "example": "Not applicable for method call"
}
```

### Response
#### Success Response (void)
This method does not return a value.

#### Response Example
```json
{
  "example": "Not applicable"
}
```
```

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### IndexStartCommand Constructor - Java

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/sshd/commands/IndexStartCommand

This is the default constructor for the IndexStartCommand class. It initializes a new instance of the command. No specific parameters are required.

```java
public IndexStartCommand()
```

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### SecureStoreProvider Constructor

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/securestore/SecureStoreProvider

Initializes a new instance of the SecureStoreProvider class.

```APIDOC
## SecureStoreProvider Constructor

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

### Method
CONSTRUCTOR

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
```json
{
  "injector": "com.google.inject.Injector",
  "sitePaths": "SitePaths",
  "className": "String"
}
```

### Response
#### Success Response (N/A)
This is a constructor and does not return a value.

#### Response Example
N/A
```

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

### Get Current Revision (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/extensions/api/changes/ChangeApi

This example shows how to retrieve the current revision of a change using the current() method of the ChangeApi.

```Java
RevisionApi revisionApi = changeApi.current();
```

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

### Start Plugin Environment (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/plugins/ServerPlugin

Starts the plugin's environment. This method is specified by the Plugin class and takes a PluginGuiceEnvironment object. It can throw an Exception if the startup process fails.

```java
protected void start(PluginGuiceEnvironment env) throws Exception
```

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### Get Change ID (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/extensions/api/changes/ChangeApi

This example shows how to retrieve the unique identifier (ID) of a change using the id() method of the ChangeApi.

```Java
String changeId = changeApi.id();
```

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### Get Commit Message (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/extensions/api/changes/ChangeApi

This example shows how to retrieve the commit message information for a change using the getMessage() method of the ChangeApi.

```Java
CommitMessageInfo commitMessage = changeApi.getMessage();
```

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

### InitFlags installPlugins Field

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/pgm/init/api/InitFlags

Final list of strings representing plugins to be installed during initialization.

```java
public final List<String> installPlugins
```

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

### Get Flow by UUID (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/extensions/api/changes/ChangeApi

This example shows how to look up a specific flow of a change by its UUID using the flow() method of the ChangeApi.

```Java
FlowApi flowApi = changeApi.flow("flow_uuid");
```

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

### AllProjectsConfig API

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/pgm/init/api/AllProjectsConfig

Documentation for the AllProjectsConfig class, which extends VersionedMetaDataOnInit and provides methods for managing project configurations.

```APIDOC
## AllProjectsConfig Class

### Description
Represents the configuration for all projects in Gerrit, extending VersionedMetaDataOnInit for managing metadata updates.

### Class Hierarchy
`java.lang.Object` > `com.google.gerrit.server.git.meta.VersionedMetaData` > `com.google.gerrit.pgm.init.api.VersionedMetaDataOnInit` > `com.google.gerrit.pgm.init.api.AllProjectsConfig`

### Methods

#### `getConfig()`
* **Method:** `getConfig`
* **Returns:** `org.eclipse.jgit.lib.Config` - The project configuration object.

#### `getGroups()`
* **Method:** `getGroups`
* **Returns:** `GroupList` - A list of groups associated with the project configuration.

#### `load()`
* **Method:** `load`
* **Description:** Loads the configuration from the repository.
* **Returns:** `AllProjectsConfig` - The loaded configuration object.
* **Throws:** `IOException`, `org.eclipse.jgit.errors.ConfigInvalidException`
* **Overrides:** `load` in class `VersionedMetaDataOnInit`

#### `onLoad()`
* **Method:** `onLoad`
* **Description:** Called after the metadata is loaded, used for parsing and setting up internal state.
* **Throws:** `IOException`, `org.eclipse.jgit.errors.ConfigInvalidException`
* **Overrides:** `onLoad` in class `VersionedMetaData`

#### `save(String pluginName, String message)`
* **Method:** `save`
* **Description:** Saves the current configuration with a specified plugin name and commit message.
* **Throws:** `IOException`, `org.eclipse.jgit.errors.ConfigInvalidException`

#### `save(org.eclipse.jgit.lib.PersonIdent ident, String msg)`
* **Method:** `save`
* **Description:** Saves the current configuration using a specific person ident and commit message.
* **Throws:** `IOException`, `org.eclipse.jgit.errors.ConfigInvalidException`
* **Overrides:** `save` in class `VersionedMetaDataOnInit`

#### `onSave(org.eclipse.jgit.lib.CommitBuilder commit)`
* **Method:** `onSave`
* **Description:** Called before saving the metadata to a commit. Allows modification of the commit builder or aborting the save.
* **Returns:** `boolean` - `true` if the commit should proceed, `false` to abort.
* **Throws:** `IOException`, `org.eclipse.jgit.errors.ConfigInvalidException`
* **Overrides:** `onSave` in class `VersionedMetaData`
```

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

### Get Custom Keyed Values (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/extensions/api/changes/ChangeApi

This example shows how to retrieve custom keyed values associated with a change using the getCustomKeyedValues() method of the ChangeApi.

```Java
ImmutableMap<String, String> customValues = changeApi.getCustomKeyedValues();
```

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### Java PropertyMap Get Method Example

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/PropertyMap

Illustrates how to retrieve a value from a PropertyMap using a typed key. The result is wrapped in an Optional to handle cases where the key might not be present in the map.

```java
Optional<String> value = propertyMap.get(stringKey);
```

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

### Gerrit API: Get Git references by prefix

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/git/PermissionAwareReadOnlyRefDatabase

Retrieves Git references that start with a specified prefix. This is commonly used to list references within a certain namespace, like 'refs/heads/' for branches.

```java
Map<String,org.eclipse.jgit.lib.Ref> getRefs(String prefix)
```

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

### Get Email Resource Unencoded Content - Java

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/mail/send/EmailResource

Abstract method to retrieve the unencoded binary data of the email resource. This is the actual content that will be attached to the email, for example, image data.

```java
public abstract com.google.protobuf.ByteString content()
```

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

### InstallPlugin Class Methods (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/plugins/InstallPlugin

This Java code snippet outlines the methods available in the InstallPlugin class. It includes methods for setting the plugin name and creation status, as well as the main apply method for processing plugin installation requests.

```java
public class InstallPlugin extends Object implements RestModifyView<TopLevelResource,InstallPluginInput>
  
  public InstallPlugin setName(String name)
  
  public InstallPlugin setCreated(boolean created)
  
  public Response<PluginInfo> apply(TopLevelResource resource, InstallPluginInput input) throws RestApiException, IOException
```

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

### Utility Methods for Gerrit Site Initialization (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/pgm/init/api/InitUtil

Provides static utility methods for initializing a Gerrit site. This includes functions for file operations like copying and creating directories, network address validation, and retrieving system information such as hostname and version. It also includes methods for converting strings to URIs and extracting resources.

```java
public static void copy(Path dst, byte[] buf) throws FileNotFoundException, IOException {}
public static Die die(String why) {}
public static Die die(String why, Throwable cause) {}
public static String dnOf(String name) {}
public static String domainOf(String name) {}
public static void extract(Path dst, Class<?> sibling, String name) throws IOException {}
public static String hostname() {}
public static boolean isAnyAddress(URI u) {}
public static boolean isLocal(String hostname) {}
public static void mkdir(File file) {}
public static void mkdir(Path path) {}
public static int portOf(URI uri) {}
public static void savePublic(org.eclipse.jgit.storage.file.FileBasedConfig sec) throws IOException {}
public static URI toURI(String url) throws URISyntaxException {}
public static String username() {}
public static String version() {}
```

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

### Java - Retrieving Query Parameters

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/extensions/api/groups/Groups

This snippet shows how to retrieve the parameters that have been set on a Groups.QueryRequest object in Java. It demonstrates methods for getting the query string, the maximum number of results, the starting index, and the currently active options.

```java
import com.google.gerrit.extensions.api.groups.Groups;
import com.google.gerrit.extensions.api.groups.Groups.ListGroupsOption;
import java.util.Set;

Groups.QueryRequest request = new Groups.QueryRequest();
request.withQuery("developers");
request.withLimit(5);
request.withStart(20);
request.withOption(ListGroupsOption.MEMBERS);

String query = request.getQuery(); // "developers"
int limit = request.getLimit();     // 5
int start = request.getStart();     // 20
Set<ListGroupsOption> options = request.getOptions(); // Contains ListGroupsOption.MEMBERS
```

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### ListPlugins Class Definition (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/plugins/ListPlugins

Defines the ListPlugins class, which implements RestReadView to list installed plugins. It includes methods for setting filters like prefix, substring, regex, limit, and start, as well as a method to convert a Plugin object to PluginInfo.

```java
public class ListPlugins extends Object implements RestReadView<TopLevelResource>
List the installed plugins.

@Inject protected ListPlugins(PluginLoader pluginLoader)
public void setAll(boolean all)
public void setLimit(int limit)
public void setStart(int start)
public void setMatchPrefix(String matchPrefix)
public void setMatchSubstring(String matchSubstring)
public void setMatchRegex(String matchRegex)
public ListPlugins request(Plugins.ListRequest request)
public Response<SortedMap<String,PluginInfo>> apply(TopLevelResource resource) throws BadRequestException
public static PluginInfo toPluginInfo(Plugin p)
```

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### Java LifecycleListener Interface - start Method

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/project/ProjectCacheWarmer

The start() method is invoked when the server is starting. This method is specified by the LifecycleListener interface.

```java
/**
 * Invoked when the server is starting.
 */
public void start();
```

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### InitStep Interface - Java

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/pgm/init/api/InitStep

This Java interface represents a single step in the site initialization process for Gerrit plugins. It defines a run() method for the core initialization logic and a postRun() method to be executed after the site has been initialized. Both methods can throw exceptions.

```java
public interface InitStep {
    /**
     * Performs the initialization step.
     * @throws Exception if an error occurs during initialization.
     */
    void run() throws Exception;

    /**
     * Executed after the site has been initialized.
     * @throws Exception if an error occurs after initialization.
     */
    default void postRun() throws Exception {
        // Default implementation does nothing
    }
}
```

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### Query Gerrit Projects API (Java)

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/extensions/api/projects/Projects

This Java snippet demonstrates how to query projects within Gerrit. The `query()` method can be called without arguments to get a request object for general querying, or with a specific query string for a shortcut. The example shows how to filter projects by name using the query functionality. A `RestApiException` may be thrown.

```java
/**
 * Query projects.
 * @return API for setting parameters and getting result.
 */
Projects.QueryRequest query();

/**
 * Query projects.
 * Shortcut API for query().withQuery(String).
 * @param query the query string.
 * @return API for setting parameters and getting result.
 */
Projects.QueryRequest query(String query);

// Example usage:
// Projects.QueryRequest req = query().withQuery("name:project");
// ProjectInfo info = req.get();
```

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

### Deploying a New SecureStore Implementation in Gerrit

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/securestore/SecureStore

This command demonstrates how to deploy a custom SecureStore implementation by providing a JAR file and switching the store. It requires a stopped Gerrit instance.

```bash
java -jar gerrit.war SwitchSecureStore -d $gerrit_site --new-secure-store-lib $path_to_new_secure_store.jar
```

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### PluginSetContext Constructor

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/plugincontext/PluginSetContext

Initializes a new instance of the PluginSetContext class.

```APIDOC
## Constructor PluginSetContext

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

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
```json
{
  "example": "Not applicable for constructor"
}
```

### Response
#### Success Response (200)
None

#### Response Example
```json
{
  "example": "Not applicable for constructor"
}
```
```

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### GET /getRepositoryStatus

Source: https://javadoc.io/doc/com.google.gerrit/gerrit-plugin-api/3.13.0-rc1/com/google/gerrit/server/git/LocalDiskRepositoryManager

Gets the GitRepositoryManager.Status of a repository by its name.

```APIDOC
## GET /getRepositoryStatus

### Description
Gets the GitRepositoryManager.Status of a repository by its name.

### Method
GET

### Endpoint
/getRepositoryStatus

### Parameters
#### Query Parameters
- **name** (Project.NameKey) - Required - The name of the repository.

### Response
#### Success Response (200)
- **status** (GitRepositoryManager.Status) - The status of the Git repository.

#### Response Example
```json
{
  "status": "HEALTHY"
}
```
```