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package cache_test
import (
"context"
"encoding/json"
"net/http"
"net/http/httptest"
"net/url"
"testing"
"time"
"github.com/stretchr/testify/assert"
linstor "github.com/LINBIT/golinstor"
"github.com/LINBIT/golinstor/cache"
"github.com/LINBIT/golinstor/client"
)
type TestResponse struct {
Code int
Body any
}
type TestServer struct {
counter map[string]int
responses map[string]TestResponse
}
func (t *TestServer) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
req := request.Method + " " + request.URL.String()
t.counter[req]++
resp, ok := t.responses[req]
if !ok {
writer.WriteHeader(http.StatusInternalServerError)
} else {
writer.WriteHeader(resp.Code)
_ = json.NewEncoder(writer).Encode(resp.Body)
}
}
const (
NodesRequest = "GET /v1/nodes?cached=true&limit=0&offset=0"
ReconnectRequest = "PUT /v1/nodes/node1/reconnect"
)
var (
Node1 = client.Node{
Name: "node1",
Props: map[string]string{
"Aux/key1": "val1",
"Aux/key2": "val2",
},
Type: linstor.ValNodeTypeStlt,
}
Node2 = client.Node{
Name: "node2",
Props: map[string]string{
"Aux/key2": "",
"Aux/key3": "val3",
},
Type: linstor.ValNodeTypeCmbd,
}
AllNodes = []client.Node{Node1, Node2}
)
func TestNodeCache(t *testing.T) {
testSrv := TestServer{
counter: make(map[string]int),
responses: map[string]TestResponse{
NodesRequest: {Code: http.StatusOK, Body: AllNodes},
ReconnectRequest: {Code: http.StatusOK},
},
}
srv := httptest.NewServer(&testSrv)
defer srv.Close()
u, err := url.Parse(srv.URL)
assert.NoError(t, err)
cl, err := client.NewClient(
client.HTTPClient(srv.Client()),
client.BaseURL(u),
cache.WithCaches(&cache.NodeCache{Timeout: 1 * time.Second}),
)
assert.NoError(t, err)
nodes, err := cl.Nodes.GetAll(context.Background())
assert.NoError(t, err)
assert.Equal(t, AllNodes, nodes)
node1, err := cl.Nodes.Get(context.Background(), "node1")
assert.NoError(t, err)
assert.Equal(t, Node1, node1)
_, err = cl.Nodes.Get(context.Background(), "node3")
assert.Equal(t, client.NotFoundError, err)
// Assert that the request was only sent once
assert.Equal(t, 1, testSrv.counter[NodesRequest])
// Invalidate cache
err = cl.Nodes.Reconnect(context.Background(), "node1")
assert.NoError(t, err)
node1, err = cl.Nodes.Get(context.Background(), "node1")
assert.NoError(t, err)
assert.Equal(t, Node1, node1)
assert.Equal(t, 2, testSrv.counter[NodesRequest])
// Wait for cache time out to be reached
time.Sleep(1*time.Second + 100*time.Millisecond)
node1, err = cl.Nodes.Get(context.Background(), "node1")
assert.NoError(t, err)
assert.Equal(t, Node1, node1)
assert.Equal(t, 3, testSrv.counter[NodesRequest])
}
func TestNodeCachePropsFiltering(t *testing.T) {
testSrv := TestServer{
counter: make(map[string]int),
responses: map[string]TestResponse{
NodesRequest: {Code: http.StatusOK, Body: AllNodes},
ReconnectRequest: {Code: http.StatusOK},
},
}
srv := httptest.NewServer(&testSrv)
defer srv.Close()
u, err := url.Parse(srv.URL)
assert.NoError(t, err)
cl, err := client.NewClient(
client.HTTPClient(srv.Client()),
client.BaseURL(u),
cache.WithCaches(&cache.NodeCache{Timeout: 1 * time.Second}),
)
assert.NoError(t, err)
// Filtering by presence of key
nodes, err := cl.Nodes.GetAll(context.Background(), &client.ListOpts{Prop: []string{"Aux/key2"}})
assert.NoError(t, err)
assert.Equal(t, AllNodes, nodes)
// Filtering by presence of key only on one node
nodes, err = cl.Nodes.GetAll(context.Background(), &client.ListOpts{Prop: []string{"Aux/key3"}})
assert.NoError(t, err)
assert.Equal(t, []client.Node{Node2}, nodes)
// Filtering by presence of key on no node
nodes, err = cl.Nodes.GetAll(context.Background(), &client.ListOpts{Prop: []string{"Aux/other"}})
assert.NoError(t, err)
assert.Empty(t, nodes)
// Filtering by presence of specific key=value
nodes, err = cl.Nodes.GetAll(context.Background(), &client.ListOpts{Prop: []string{"Aux/key2=val2"}})
assert.NoError(t, err)
assert.Equal(t, []client.Node{Node1}, nodes)
// Filtering by presence of specific key=""
nodes, err = cl.Nodes.GetAll(context.Background(), &client.ListOpts{Prop: []string{"Aux/key2="}})
assert.NoError(t, err)
assert.Equal(t, []client.Node{Node2}, nodes)
}
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