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Start work on storing channel buffers

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Max Brunsfeld 2023-08-21 12:00:43 -07:00 • committed by Mikayla
parent 29e43384f0
commit ff5035ea37
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16 changed files with 484 additions and 4 deletions
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25
crates/collab/migrations/20230819154600_add_channel_buffers.sql Normal file
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CREATE TABLE "buffers" (
"id" SERIAL PRIMARY KEY,
"epoch" INTEGER NOT NULL DEFAULT 0
);
CREATE TABLE "buffer_operations" (
"buffer_id" INTEGER NOT NULL REFERENCES buffers (id) ON DELETE CASCADE,
"epoch" INTEGER NOT NULL,
"replica_id" INTEGER NOT NULL,
"local_timestamp" INTEGER NOT NULL,
"lamport_timestamp" INTEGER NOT NULL,
"version" BYTEA NOT NULL,
"is_undo" BOOLEAN NOT NULL,
"value" BYTEA NOT NULL,
PRIMARY KEY(buffer_id, epoch, lamport_timestamp, replica_id)
);
CREATE TABLE "buffer_snapshots" (
"buffer_id" INTEGER NOT NULL REFERENCES buffers (id) ON DELETE CASCADE,
"epoch" INTEGER NOT NULL,
"text" TEXT NOT NULL,
PRIMARY KEY(buffer_id, epoch)
);
ALTER TABLE "channels" ADD COLUMN "main_buffer_id" INTEGER REFERENCES buffers (id);