Deployment Platform/Sneakernet/Packets format

Packets format

Packets are tarball files with .packet suffix.

On logic level, every packet consists of:

• one header, a dictionary of key-value pairs;
• records, a dictionary of key-value pairs and optional data depending on record type.

Header

Header is being stored in JSON notation in /header file in packet tarball.

• src, sender's GUID
• dst, optional destination GUID
• filename, suggested file name for packet file, it is assumed to be unique

Record types

• Push changes of Sugar Network resource's properties.

• cmd: sn_push;
• content_type: records;
• document, Sugar Network resource to push diff to;
• guid, document GUID to push diff for;
• diff, dictionary of <prop_name>: {"value": <value>, "mtime": <mtime>} with changed property values.

• ACK packet:

• type: ack
• src: master's identity
• dst: receiver's identity ack is intended for
• push_sequence: original PUSH packet's sequence
• pull_sequence: Sequence after merging original PUSH packet

• Pull Sugar Network data.

• cmd: sn_pull;
• sequence: sequence to pull.

• Pull files from shared directory.

• cmd: files_pull;
• directory, synchronized directory to pull;
• sequence, sequence to pull.