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Updating Bitswap architecture diagram.
License: MIT Signed-off-by: David Grisham <[email protected]>
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‎img/architecture.txt

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┌────────────────────────────────────────────────────────────────────────────┐
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│ Bitswap API │
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└────────────────────────────────────────────────────────────────────────────┘
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│ ▲
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│register wants │yields the
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│and unwants │received
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│ │blocks
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│ │
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│ send block to other nodes┌───────────────────────────┐
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│ by adding them to their │ Decision Engine │
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│ buckets │ │
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│ ┌─────────◀├ ─ ─ ─ │
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│ │ │Ledger│ │
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│ │ └───────────────────────────┘
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│ │ ▲
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▼ │ │
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┌────────────────────┐ │ │
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│ │ │ │
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│ Want Manager │ │ │
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│ │ │ │
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├───────────┬──┬─────┘ │ │
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│my wantlist│ │ │ │
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└───────────┘ │update wantlist │ │
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│messages │ receive a block │
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└─────┬───────┬───────┤ │
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│ │ │ │
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▼ ▼ ▼ │
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┌───────┬───────┬───────┐ │
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│Message│Message│... │ │
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│Queue/ │Queue/ │ │ │
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│peer │peer │ │ │
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└───────┴───────┴───────┘ │
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│ │ │ │
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│ │ │ │
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│ │ │ │
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└───────┴───────┴─┐ │
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│ │
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│ │
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▼ │
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┌────────────────────────────────────────┐
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│ Network │
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└────────────────────────────────────────┘
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│ ▲ │ ▲
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▼ │ │ │
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┌─────────┐ ▼ │
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│Transform│ /ipfs/bitswap/1.1.0
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└─────────┘
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│ ▲
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▼ │
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/ipfs/bitswap/1.0.0
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+---------------------------------------------------------------------------+
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| Bitswap API |
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+-----------+---------------------------------------------------------------+
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| ^
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| |
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| |
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| Yield the
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Register wants received blocks
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and unwants |
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| |
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| +------------+-------------+
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| +-------<------+ |
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| | | Decision Engine |
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| | +============\ |
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| | |Peer Ledgers| |
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v | +------------/-------------+
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+--------------------+ | ^
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| | | |
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| Want Manager | Add peers' wanted blocks |
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+============\ | to outgoing messages |
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|Our wantlist| | | |
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+------------/---+---+ | |
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| | |
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| | |
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Add wants/cancels | |
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to outgoing message | |
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| | |
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| | |
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+----+---+--------+----+--+ |
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| | | | |
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v v v v |
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+--------+--------+ +--------+ +---------+---------+
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|Peer 1 |Peer 2 | |Peer N | |{d} |
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|Message |Message | ... |Message | |/ipfs/bitswap/1.1.0|
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|Queue |Queue | |Queue | | |
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+--------+--------+ +--------+ +---------+---------+
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| | | | |
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| | | | |
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| | | | |
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+--------+--+-----+-------+ |
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| |
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| |
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+---------+---------+ |
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|{d} | |
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|/ipfs/bitswap/1.1.0| |
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| | |
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+---------+---------+ |
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| |
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v |
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+-------------------------------------------+-----------------------------------+
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| Network |
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+-------------------------------------------------------------------------------+
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| |
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v Peer using |
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+-------------* older Bitswap? +------>-------+
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| | | |
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v | | |
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+--------+--------+ | +--------+--------+ |
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|{io}Transform | | |{io}Transform | |
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+--------+--------+ | +--------+--------+ |
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| | ^ |Yes
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| | | No |
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+------>------+ +--------------* Older Bitswap
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| ^ version?
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| |
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+---------+---------+ +---------+---------+
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|{d} (Outgoing) | |{d} (Incoming) |
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| Bitswap Message | | Bitswap Message |
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| | | |
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+---------+---------+ +---------+---------+

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