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scylla/src/scylla/collections/map.clj
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(ns scylla.collections.map | |
"A test for sets backed by CQL maps." | |
(:require [clojure [pprint :refer :all]] | |
[clojure.tools.logging :refer [info]] | |
[jepsen | |
[client :as client] | |
[checker :as checker] | |
[generator :as gen]] | |
[qbits.alia :as alia] | |
[qbits.hayt :refer :all] | |
[scylla [client :as c] | |
[db :as db]]) | |
(:import (clojure.lang ExceptionInfo) | |
(com.datastax.driver.core.exceptions UnavailableException | |
WriteTimeoutException | |
ReadTimeoutException | |
NoHostAvailableException))) | |
(defrecord CQLMapClient [tbl-created? conn] | |
client/Client | |
(open! [this test node] | |
(assoc this :conn (c/open test node))) | |
(setup! [_ test] | |
(let [s (:session conn)] | |
(locking tbl-created? | |
(when (compare-and-set! tbl-created? false true) | |
(c/retry-each | |
(alia/execute s (create-keyspace :jepsen_keyspace | |
(if-exists false) | |
(with {:replication {:class :SimpleStrategy | |
:replication_factor 3}}))) | |
(alia/execute s (use-keyspace :jepsen_keyspace)) | |
(alia/execute s (create-table :maps | |
(if-exists false) | |
(column-definitions {:id :int | |
:elements (map-type :int :int) | |
:primary-key [:id]}) | |
(with {:compaction {:class (:compaction-strategy test)}})))))))) | |
(invoke! [_ test op] | |
(let [s (:session conn)] | |
(c/with-errors op #{:read} | |
(alia/execute s (use-keyspace :jepsen_keyspace)) | |
(case (:f op) | |
:add (do (alia/execute s | |
(update :maps | |
(set-columns {:elements [+ {(:value op) (:value op)}]}) | |
(where [[= :id 0]])) | |
(merge {:consistency :one} | |
(c/write-opts test))) | |
(assoc op :type :ok)) | |
:read (do (db/wait-for-recovery 30 s) | |
(let [value (->> (alia/execute s | |
(select :maps (where [[= :id 0]])) | |
(merge | |
; TODO: do we really want | |
; ALL? | |
{:consistency :all | |
:retry-policy c/aggressive-read} | |
(c/read-opts test))) | |
first | |
:elements | |
vals | |
(into (sorted-set)))] | |
(assoc op :type :ok :value value))))))) | |
(close! [_ _] | |
(c/close! conn)) | |
(teardown! [_ _]) | |
client/Reusable | |
(reusable? [_ _] true)) | |
(defn cql-map-client | |
"A set implemented using CQL maps" | |
[] | |
(->CQLMapClient (atom false) nil)) | |
(defn workload | |
[opts] | |
{:client (cql-map-client) | |
:generator (map (fn [x] {:f :add, :value x}) (range)) | |
:final-generator (->> {:f :read} | |
gen/repeat | |
(gen/stagger 1) | |
gen/until-ok) | |
:checker (checker/set)}) |