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read.clj
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read.clj
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(ns oc.lib.change.resources.read
"Retrieve tuples from read table of Change service"
(:require [taoensso.faraday :as far]
[schema.core :as schema]
[taoensso.timbre :as timbre]
[oc.lib.schema :as lib-schema]))
;; Table and GSIndex names
(def ^:private table "_read")
(defn table-name [db-opts]
(keyword (str (:table-prefix db-opts) table)))
(defn user-id-gsi-name [db-opts]
(keyword (str (:table-prefix db-opts) table "_gsi_user_id")))
(defn org-id-user-id-gsi-name [db-opts]
(keyword (str (:table-prefix db-opts) table "_gsi_org_id_user_id")))
(defn container-id-item-id-gsi-name [db-opts]
(keyword (str (:table-prefix db-opts) table "_gsi_container_id_item_id")))
(defn container-id-gsi-name [db-opts]
(keyword (str (:table-prefix db-opts) table "_gsi_container_id")))
;; Store
(schema/defn ^:always-validate store!
;; Store a read record for the specified user and item
([db-opts
org-id :- lib-schema/UniqueID
container-id :- lib-schema/UniqueID
item-id :- lib-schema/UniqueID
user-id :- lib-schema/UniqueID
user-name :- schema/Str
avatar-url :- (schema/maybe schema/Str)
read-at :- lib-schema/ISO8601]
(far/put-item db-opts (table-name db-opts) {
:org_id org-id
:container_id container-id
:item_id item-id
:user_id user-id
:name user-name
:avatar_url avatar-url
:read_at read-at})
true))
;; Retrive
(schema/defn ^:always-validate retrieve-by-item :- [{:user-id lib-schema/UniqueID
:name schema/Str
:avatar-url (schema/maybe schema/Str)
:read-at lib-schema/ISO8601}]
[db-opts item-id :- lib-schema/UniqueID]
(->> (far/query db-opts (table-name db-opts) {:item_id [:eq item-id]})
(map #(clojure.set/rename-keys % {:user_id :user-id :avatar_url :avatar-url :read_at :read-at}))
(map #(select-keys % [:user-id :name :avatar-url :read-at]))))
(schema/defn ^:always-validate retrieve-by-user :- [{(schema/optional-key :container-id) lib-schema/UniqueID
:item-id lib-schema/UniqueID
:read-at lib-schema/ISO8601}]
[db-opts user-id :- lib-schema/UniqueID]
(->>
(far/query db-opts (table-name db-opts) {:user_id [:eq user-id]} {:index (user-id-gsi-name db-opts)})
(map #(clojure.set/rename-keys % {:container_id :container-id :item_id :item-id :read_at :read-at}))
(map #(select-keys % [:container-id :item-id :read-at]))))
(schema/defn ^:always-validate retrieve-by-user-item :- {(schema/optional-key :org-id) lib-schema/UniqueID
(schema/optional-key :container-id) lib-schema/UniqueID
(schema/optional-key :item-id) lib-schema/UniqueID
(schema/optional-key :user-id) lib-schema/UniqueID
(schema/optional-key :name) schema/Str
(schema/optional-key :avatar-url) (schema/maybe schema/Str)
(schema/optional-key :read-at) lib-schema/ISO8601}
[db-opts user-id :- lib-schema/UniqueID item-id :- lib-schema/UniqueID]
(-> (far/get-item db-opts (table-name db-opts) {:item_id item-id
:user_id user-id})
(clojure.set/rename-keys {:org_id :org-id :container_id :container-id :item_id :item-id :user_id :user-id :avatar_url :avatar-url :read_at :read-at})
(select-keys [:org-id :container-id :item-id :user-id :name :avatar-url :read-at])))
(schema/defn ^:always-validate retrieve-by-user-container :- [{:item-id lib-schema/UniqueID
:read-at lib-schema/ISO8601}]
[db-opts user-id :- lib-schema/UniqueID container-id :- lib-schema/UniqueID]
(->>
(far/query db-opts (table-name db-opts) {:user_id [:eq user-id] :container_id [:eq container-id]}
{:index (user-id-gsi-name db-opts)})
(map #(clojure.set/rename-keys % {:item_id :item-id :read_at :read-at}))
(map #(select-keys % [:item-id :read-at]))))
(schema/defn ^:always-validate retrieve-by-user-org :- [{(schema/optional-key :item-id) lib-schema/UniqueID
(schema/optional-key :container-id) lib-schema/UniqueID
(schema/optional-key :read-at) lib-schema/ISO8601}]
[db-opts user-id :- lib-schema/UniqueID org-id :- lib-schema/UniqueID]
(->> (far/query db-opts (table-name db-opts) {:org_id [:eq org-id] :user_id [:eq user-id]} {:index (org-id-user-id-gsi-name db-opts)})
(map #(clojure.set/rename-keys % {:container_id :container-id :item_id :item-id :read_at :read-at}))
(map #(select-keys % [:item-id :container-id :read-at]))))
(schema/defn ^:always-validate retrieve-by-container :- [{(schema/optional-key :user-id) lib-schema/UniqueID
(schema/optional-key :item-id) lib-schema/UniqueID}]
[db-opts container-id :- lib-schema/UniqueID]
(->> (far/query db-opts (table-name db-opts) {:container_id [:eq container-id]} {:index (container-id-gsi-name db-opts)})
(map #(clojure.set/rename-keys % {:user_id :user-id :item_id :item-id :read_at :read-at}))
(map #(select-keys % [:user-id :item-id :read-at]))))
(schema/defn ^:always-validate retrieve-by-org :- [{(schema/optional-key :user-id) lib-schema/UniqueID
(schema/optional-key :item-id) lib-schema/UniqueID}]
[db-opts org-id :- lib-schema/UniqueID]
(->> (far/query db-opts (table-name db-opts) {:org_id [:eq org-id]} {:index (org-id-user-id-gsi-name db-opts)})
(map #(clojure.set/rename-keys % {:user_id :user-id :item_id :item-id}))
(map #(select-keys % [:user-id :item-id]))))
;; Move
(schema/defn ^:always-validate move-item!
[db-opts item-id :- lib-schema/UniqueID old-container-id :- lib-schema/UniqueID new-container-id :- lib-schema/UniqueID]
(let [items-to-move (retrieve-by-item db-opts item-id)]
(timbre/info "Read move-item! for" item-id "moving:" (count items-to-move) "items from container" old-container-id "to" new-container-id)
(doseq [item items-to-move]
(far/update-item db-opts (table-name db-opts) {:item_id item-id
:user_id (:user-id item)}
{:update-expr "SET #k = :new_value"
:expr-attr-names {"#k" "container_id"}
:expr-attr-vals {":new_value" new-container-id}
:return :all-new}))))
;; Delete
(schema/defn ^:always-validate delete-user-item!
[db-opts user-id :- lib-schema/UniqueID item-id :- lib-schema/UniqueID]
(far/delete-item db-opts (table-name db-opts) {:item_id item-id
:user_id user-id}))
(def delete! delete-user-item!)
(schema/defn ^:always-validate delete-by-item!
([db-opts container-id :- lib-schema/UniqueID item-id :- lib-schema/UniqueID]
(delete-by-item! db-opts item-id))
([db-opts item-id :- lib-schema/UniqueID]
;; Remove all item reads
(doseq [item (retrieve-by-item db-opts item-id)]
(delete! db-opts (:user-id item) item-id))))
(schema/defn ^:always-validate delete-by-container!
[db-opts container-id :- lib-schema/UniqueID]
;; Remove all item reads
(doseq [item (retrieve-by-container db-opts container-id)]
(far/delete-item db-opts (table-name db-opts) {:item_id (:item-id item)
:user_id (:user-id item)})))
(schema/defn ^:always-validate delete-by-org!
[db-opts org-id :- lib-schema/UniqueID]
;; Remove all item reads
(doseq [item (retrieve-by-org db-opts org-id)]
(far/delete-item db-opts (table-name db-opts) {:item_id (:item-id item)
:user_id (:user-id item)})))
;; Count
;; In theory, DynamoDB (and by extension, Faraday) support `{:return :count}` but it doesn't seem to be working
;; https://github.com/ptaoussanis/faraday/issues/91
(defn- count-for [db-opts user-id item-id]
(let [item-reads (retrieve-by-item db-opts item-id)]
{:item-id item-id
:count (count item-reads)
:last-read-at (->> item-reads
(filterv #(= (:user-id %) user-id))
(sort-by :read-at)
last
:read-at)}))
(schema/defn ^:always-validate counts :- [{:item-id lib-schema/UniqueID
:count schema/Int
:last-read-at (schema/maybe lib-schema/ISO8601)}]
[db-opts item-ids :- [lib-schema/UniqueID] user-id :- lib-schema/UniqueID]
(pmap (partial count-for db-opts user-id) item-ids))
(comment
(require '[oc.lib.time :as oc-time])
(require '[oc.lib.change.resources.read :as lib-read] :reload)
(def db-opts {:table-prefix "local"})
(far/list-tables db-opts)
(far/delete-table db-opts (lib-read/table-name db-opts))
(aprint
(far/create-table db-opts
(lib-read/table-name db-opts)
[:item_id :s]
{:range-keydef [:user_id :s]
:billing-mode :pay-per-request
:block? true}))
(aprint
(far/update-table db-opts
(lib-read/table-name db-opts)
{:gsindexes {:operation :create
:name (lib-read/user-id-gsi-name db-opts)
:billing-mode :pay-per-request
:hash-keydef [:user_id :s]
:range-keydef [:container_id :s]
:projection :all}}))
;; Add GSI for delete all via item-id
(aprint
@(far/update-table db-opts
(lib-read/table-name db-opts)
{:gsindexes {:operation :create
:name (lib-read/container-id-item-id-gsi-name db-opts)
:billing-mode :pay-per-request
:hash-keydef [:item_id :s]
:range-keydef [:container_id :s]
:projection :keys-only}}))
;; Add GSI for delete all via org-id
(far/update-table db-opts read/table-name
{:gsindexes {:operation :create
:name read/org-id-user-id-gsi-name
:billing-mode :pay-per-request
:hash-keydef [:org_id :s]
:range-keydef [:user_id :s]
:projection :keys-only}})
(doseq [item (far/query db-opts (lib-read/table-name db-opts) {:item_id [:eq "512b-4ad1-9924"]} {:index (lib-read/container-id-item-id-gsi-name db-opts)})]
(aprint
(far/delete-item db-opts (lib-read/table-name db-opts) {:item_id (:item_id item)
:user_id (:user_id item)})))
;; Add GSI for delete all via container-id
(aprint @(far/update-table db-opts (lib-read/table-name db-opts)
{:gsindexes
{:operation :create
:name (lib-read/container-id-gsi-name db-opts)
:billing-mode :pay-per-request
:hash-keydef [:container_id :s]
:range-keydef [:user_id :s]
:projection :keys-only}}))
(doseq [item (far/query db-opts (lib-read/table-name db-opts) {:container_id [:eq "25a3-4692-bf02"]} {:index (lib-read/container-id-gsi-name db-opts)})]
(aprint
(far/delete-item db-opts (lib-read/table-name db-opts) {:item_id (:item_id item)
:user_id (:user_id item)})))
(far/update-table db-opts (lib-read/table-name db-opts) {:gsindexes {:operation :delete :name (lib-read/container-id-gsi-name db-opts)}})
(aprint (far/describe-table db-opts (lib-read/table-name db-opts)))
;; Store an item read
(lib-read/store! db-opts "aaaa-aaaa-aaaa" "bbbb-bbbb-bbbb" "cccc-cccc-cccc"
"1111-1111-1111" "Albert Camus" "http//..." (oc-time/current-timestamp))
(lib-read/retrieve-by-item db-opts iid)
(lib-read/retrieve-by-item db-opts "cccc-cccc-cccc")
(lib-read/retrieve-by-user db-opts "1111-1111-1111")
(lib-read/retrieve-by-user-container db-opts "1111-1111-1111" "bbbb-bbbb-bbbb")
(lib-read/retrieve-by-user-org db-opts "1111-1111-1111" "aaaa-aaaa-aaaa")
(lib-read/store! db-opts "aaaa-aaaa-aaaa" "bbbb-bbbb-bbbb" "c1c1-c1c1-c1c1"
"2222-2222-2222" "Arthur Schopenhauer" "http//..." (oc-time/current-timestamp))
(lib-read/retrieve-by-item db-opts "c1c1-c1c1-c1c1")
(lib-read/retrieve-by-user db-opts "2222-2222-2222")
(lib-read/retrieve-by-user-container db-opts "2222-2222-2222" "bbbb-bbbb-bbbb")
(lib-read/retrieve-by-user-org db-opts "2222-2222-2222" "aaaa-aaaa-aaaa")
(lib-read/store! db-opts "aaaa-aaaa-aaaa" "bbbb-bbbb-bbbb" "c1c1-c1c1-c1c1"
"1111-1111-1111" "Albert Camus" "http//..." (oc-time/current-timestamp))
(lib-read/counts db-opts ["cccc-cccc-cccc" "c1c1-c1c1-c1c1"] "1111-1111-1111")
(far/delete-table db-opts (lib-read/table-name db-opts))
)