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## org.apache.ivy.plugins.repository.ssh
Class SshCache

    java.lang.Object
      org.apache.ivy.plugins.repository.ssh.SshCache

    public final class SshCache

extends java.lang.Object

a class to cache SSH Connections and Channel for the SSH Repository each session is defined by connecting user / host / port two maps are used to find cache entries one map is using the above keys, the other uses the session itself

Method Summary
`void` | `attachChannelSftp(Session session, ChannelSftp channel)` attaches a channelSftp to an existing session cache entry
`void` | `clearSession(Session session)` discardes session entries from the cache
`ChannelSftp` | `getChannelSftp(Session session)` retrieves an sftp channel from the cache
`static SshCache` | `getInstance()`
`Session` | `getSession(java.lang.String host, int port, java.lang.String username, java.lang.String userPassword, java.io.File pemFile, java.lang.String pemPassword, java.io.File passFile)` Gets a session from the cache or establishes a new session if necessary

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

Method Detail

### getInstance

    public static SshCache getInstance()

### clearSession

    public void clearSession(Session session)

  discardes session entries from the cache

  Parameters:
    `session` - to clear

### getChannelSftp

    public ChannelSftp getChannelSftp(Session session)
                               throws java.io.IOException

  retrieves an sftp channel from the cache

  Parameters:
    `session` - to connect to
  Returns:
    channelSftp or null if not successful (channel not existent or dead)
  Throws:
    `java.io.IOException`

### attachChannelSftp

    public void attachChannelSftp(Session session,
                                  ChannelSftp channel)

  attaches a channelSftp to an existing session cache entry

  Parameters:
    `session` - to attach the channel to
    `channel` - channel to attach

### getSession

    public Session getSession(java.lang.String host,
                              int port,
                              java.lang.String username,
                              java.lang.String userPassword,
                              java.io.File pemFile,
                              java.lang.String pemPassword,
                              java.io.File passFile)
                       throws java.io.IOException

  Gets a session from the cache or establishes a new session if necessary

  Parameters:
    `host` - to connect to
    `port` - to use for session (-1 == use standard port)
    `username` - for the session to use
    `userPassword` - to use for authentication (optional)
    `pemFile` - File to use for public key authentication
    `pemPassword` - to use for accessing the pemFile (optional)
    `passFile` - to store credentials
  Returns:
    session or null if not successful
  Throws:
    `java.io.IOException`

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