TenantKeyFileUtil (IBM FHIR Server)

java.lang.Object
- com.ibm.fhir.schema.app.util.TenantKeyFileUtil

```
public class TenantKeyFileUtil
extends Object
```
manages the writing and reading of the tenant key enforcing the constraints:
file exists
folder exists
one non-empty line in the file

Constructor Summary

Constructors
Constructor Description

TenantKeyFileUtil()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`keyFileExists(String tenantKeyFileName)`	checks if the tenant key at the given location exists
`String`	`readTenantFile(String tenantKeyFileName)`	reads a tenant key from a file with one line.
`void`	`writeTenantFile(String tenantKeyFileName, String tenantKey)`	writes the tenant's key to the given file.

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - TenantKeyFileUtil
```
public TenantKeyFileUtil()
```
- Method Detail
  - keyFileExists
```
public boolean keyFileExists(String tenantKeyFileName)
```
    checks if the tenant key at the given location exists
    
    Parameters:
    
    tenantKeyFileName -
    
    Returns:
  - readTenantFile
```
public String readTenantFile(String tenantKeyFileName)
```
    reads a tenant key from a file with one line.
    
    Parameters:
    
    tenantKeyFileName - a relative or absolute path
    
    Returns:
    
    the tenant key contained in the file
  - writeTenantFile
```
public void writeTenantFile(String tenantKeyFileName,
                            String tenantKey)
```
    writes the tenant's key to the given file.
    
    Parameters:
    
    tenantKeyFileName - a valid file and location.
    
    tenantKey - a generated key