Package org.eclipse.jgit.transport

Class TransportHttp.HttpObjectDB

    • Field Detail

      • httpObjectsUrl

        private final java.net.URL httpObjectsUrl

    • Constructor Detail

      • HttpObjectDB

        HttpObjectDB​(java.net.URL b)

    • Method Detail

      • getAlternates

        java.util.Collection<WalkRemoteObjectDatabase> getAlternates()
                                                      throws java.io.IOException
        Description copied from class: WalkRemoteObjectDatabase
        Obtain alternate connections to alternate object databases (if any).

        Alternates are typically read from the file Constants.INFO_ALTERNATES or Constants.INFO_HTTP_ALTERNATES. The content of each line must be resolved by the implementation and a new database reference should be returned to represent the additional location.

        Alternates may reuse the same network connection handle, however the fetch connection will WalkRemoteObjectDatabase.close() each created alternate.

        Specified by:
        getAlternates in class WalkRemoteObjectDatabase
        Returns:
        list of additional object databases the caller could fetch from; null or empty list if none are configured.
        Throws:
        java.io.IOException - The connection is unable to read the remote repository's list of configured alternates.

      • openAlternate

        WalkRemoteObjectDatabase openAlternate​(java.lang.String location)
                                throws java.io.IOException
        Description copied from class: WalkRemoteObjectDatabase
        Create a new connection for a discovered alternate object database

        This method is typically called by WalkRemoteObjectDatabase.readAlternates(String) when subclasses us the generic alternate parsing logic for their implementation of WalkRemoteObjectDatabase.getAlternates().

        Specified by:
        openAlternate in class WalkRemoteObjectDatabase
        Parameters:
        location - the location of the new alternate, relative to the current object database.
        Returns:
        a new database connection that can read from the specified alternate.
        Throws:
        java.io.IOException - The database connection cannot be established with the alternate, such as if the alternate location does not actually exist and the connection's constructor attempts to verify that.

      • openReader

        java.io.BufferedReader openReader​(java.lang.String path)
                           throws java.io.IOException
        Description copied from class: WalkRemoteObjectDatabase
        Open a buffered reader around a file.

        This method is suitable for reading line-oriented resources like info/packs, info/refs, and the alternates list.

        Overrides:
        openReader in class WalkRemoteObjectDatabase
        Parameters:
        path - location of the file to read, relative to this objects directory (e.g. info/packs).
        Returns:
        a stream to read from the file. Never null.
        Throws:
        java.io.FileNotFoundException - the requested file does not exist at the given location.
        java.io.IOException - The connection is unable to read the remote's file, and the failure occurred prior to being able to determine if the file exists, or after it was determined to exist but before the stream could be created.

      • getPackNames

        java.util.Collection<java.lang.String> getPackNames()
                                             throws java.io.IOException
        Description copied from class: WalkRemoteObjectDatabase
        Obtain the list of available packs (if any).

        Pack names should be the file name in the packs directory, that is pack-035760ab452d6eebd123add421f253ce7682355a.pack. Index names should not be included in the returned collection.

        Specified by:
        getPackNames in class WalkRemoteObjectDatabase
        Returns:
        list of pack names; null or empty list if none are available.
        Throws:
        java.io.IOException - The connection is unable to read the remote repository's list of available pack files.

      • open

        WalkRemoteObjectDatabase.FileStream open​(java.lang.String path)
                                  throws java.io.IOException
        Description copied from class: WalkRemoteObjectDatabase
        Open a single file for reading.

        Implementors should make every attempt possible to ensure FileNotFoundException is used when the remote object does not exist. However when fetching over HTTP some misconfigured servers may generate a 200 OK status message (rather than a 404 Not Found) with an HTML formatted message explaining the requested resource does not exist. Callers such as WalkFetchConnection are prepared to handle this by validating the content received, and assuming content that fails to match its hash is an incorrectly phrased FileNotFoundException.

        This method is recommended for already compressed files like loose objects and pack files. For text files, see WalkRemoteObjectDatabase.openReader(String).

        Specified by:
        open in class WalkRemoteObjectDatabase
        Parameters:
        path - location of the file to read, relative to this objects directory (e.g. cb/95df6ab7ae9e57571511ef451cf33767c26dd2 or pack/pack-035760ab452d6eebd123add421f253ce7682355a.pack).
        Returns:
        a stream to read from the file. Never null.
        Throws:
        java.io.FileNotFoundException - the requested file does not exist at the given location.
        java.io.IOException - The connection is unable to read the remote's file, and the failure occurred prior to being able to determine if the file exists, or after it was determined to exist but before the stream could be created.

      • outOfOrderAdvertisement

        private PackProtocolException outOfOrderAdvertisement​(java.lang.String n)

      • close

        void close()
        Description copied from class: WalkRemoteObjectDatabase
        Close any resources used by this connection.

        If the remote repository is contacted by a network socket this method must close that network socket, disconnecting the two peers. If the remote repository is actually local (same system) this method must close any open file handles used to read the "remote" repository.

        Specified by:
        close in class WalkRemoteObjectDatabase