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defmodule ReshardChangesFeedTest do
use CouchTestCase
import ReshardHelpers
@moduledoc """
Test _changes interaction with resharding
"""
setup do
db = random_db_name()
{:ok, _} = create_db(db, query: %{q: 2})
on_exit(fn ->
reset_reshard_state()
delete_db(db)
end)
{:ok, [db: db]}
end
test "all_docs after splitting all shards on node1", context do
db = context[:db]
add_docs(1..3, db)
all_before = changes(db)
first_seq = hd(all_before["results"])["seq"]
last_seq = all_before["last_seq"]
since_1_before = docset(changes(db, %{:since => first_seq}))
since_last_before = docset(changes(db, %{:since => last_seq}))
resp = post_job_range(db, "00000000-7fffffff")
assert resp.status_code in [201, 202]
resp.body
|> Enum.map(fn j -> j["id"] end)
|> Enum.each(fn id -> wait_job_completed(id) end)
all_after = changes(db)
since_1_after = docset(changes(db, %{:since => first_seq}))
since_last_after = docset(changes(db, %{:since => last_seq}))
assert docset(all_before) == docset(all_after)
assert MapSet.subset?(since_1_before, since_1_after)
assert MapSet.subset?(since_last_before, since_last_after)
get_jobs()
|> Enum.map(fn j -> j["id"] end)
|> Enum.each(fn id -> remove_job(id) end)
end
defp docset(changes) do
changes["results"]
|> Enum.map(fn %{"id" => id} -> id end)
|> MapSet.new()
end
defp changes(db, query \\ %{}) do
resp = Couch.get("/#{db}/_changes", query: query)
assert resp.status_code == 200
resp.body
end
defp add_docs(range, db) do
docs = create_docs(range)
w3 = %{:w => 3}
resp = Couch.post("/#{db}/_bulk_docs", body: %{docs: docs}, query: w3)
assert resp.status_code in [201, 202]
assert length(resp.body) == length(docs)
docs
|> rev(resp.body)
|> Enum.into(%{}, fn %{:_id => id, :_rev => rev} -> {id, rev} end)
end
# (Keep for debugging)
# defp unpack_seq(seq) when is_binary(seq) do
# [_, opaque] = String.split(seq, "-")
# {:ok, binblob} = Base.url_decode64(opaque, padding: false)
# :erlang.binary_to_term(binblob)
# end
end
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