336 lines
13 KiB
Go
336 lines
13 KiB
Go
package upstream
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import (
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"os"
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"testing"
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"time"
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"github.com/sirupsen/logrus"
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"github.com/stretchr/testify/require"
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"gitlab.com/gitlab-org/gitlab/workhorse/internal/config"
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"gitlab.com/gitlab-org/gitlab/workhorse/internal/helper"
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"gitlab.com/gitlab-org/gitlab/workhorse/internal/testhelper"
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)
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const (
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geoProxyEndpoint = "/api/v4/geo/proxy"
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testDocumentRoot = "testdata/public"
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)
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type testCase struct {
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desc string
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path string
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expectedResponse string
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}
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func TestMain(m *testing.M) {
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// Secret should be configured before any Geo API poll happens to prevent
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// race conditions where the first API call happens without a secret path
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testhelper.ConfigureSecret()
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os.Exit(m.Run())
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}
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func TestRouting(t *testing.T) {
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handle := func(u *upstream, regex string) routeEntry {
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handler := http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
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io.WriteString(w, regex)
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})
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return u.route("", regex, handler)
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}
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const (
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foobar = `\A/foobar\z`
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quxbaz = `\A/quxbaz\z`
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main = ""
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)
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u := newUpstream(config.Config{}, logrus.StandardLogger(), func(u *upstream) {
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u.Routes = []routeEntry{
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handle(u, foobar),
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handle(u, quxbaz),
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handle(u, main),
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}
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})
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ts := httptest.NewServer(u)
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defer ts.Close()
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testCases := []testCase{
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{"main route works", "/", main},
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{"foobar route works", "/foobar", foobar},
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{"quxbaz route works", "/quxbaz", quxbaz},
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{"path traversal works, ends up in quxbaz", "/foobar/../quxbaz", quxbaz},
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{"escaped path traversal does not match any route", "/foobar%2f%2e%2e%2fquxbaz", main},
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{"double escaped path traversal does not match any route", "/foobar%252f%252e%252e%252fquxbaz", main},
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}
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runTestCases(t, ts, testCases)
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}
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// This test can be removed when the environment variable `GEO_SECONDARY_PROXY` is removed
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func TestGeoProxyFeatureDisabledOnGeoSecondarySite(t *testing.T) {
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// We could just not set up the primary, but then we'd have to assert
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// that the internal API call isn't made. This is easier.
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remoteServer, rsDeferredClose := startRemoteServer("Geo primary")
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defer rsDeferredClose()
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geoProxyEndpointResponseBody := fmt.Sprintf(`{"geo_proxy_url":"%v"}`, remoteServer.URL)
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railsServer, deferredClose := startRailsServer("Local Rails server", &geoProxyEndpointResponseBody)
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defer deferredClose()
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ws, wsDeferredClose, _ := startWorkhorseServer(railsServer.URL, false)
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defer wsDeferredClose()
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testCases := []testCase{
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{"jobs request is served locally", "/api/v4/jobs/request", "Local Rails server received request to path /api/v4/jobs/request"},
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{"health check is served locally", "/-/health", "Local Rails server received request to path /-/health"},
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{"unknown route is served locally", "/anything", "Local Rails server received request to path /anything"},
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}
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runTestCases(t, ws, testCases)
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}
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func TestGeoProxyFeatureEnabledOnGeoSecondarySite(t *testing.T) {
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testCases := []testCase{
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{"push from secondary is forwarded", "/-/push_from_secondary/foo/bar.git/info/refs", "Geo primary received request to path /-/push_from_secondary/foo/bar.git/info/refs"},
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{"LFS files are served locally", "/group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6", "Local Rails server received request to path /group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6"},
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{"jobs request is forwarded", "/api/v4/jobs/request", "Geo primary received request to path /api/v4/jobs/request"},
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{"health check is served locally", "/-/health", "Local Rails server received request to path /-/health"},
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{"unknown route is forwarded", "/anything", "Geo primary received request to path /anything"},
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}
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runTestCasesWithGeoProxyEnabled(t, testCases)
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}
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// This test can be removed when the environment variable `GEO_SECONDARY_PROXY` is removed
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func TestGeoProxyFeatureDisabledOnNonGeoSecondarySite(t *testing.T) {
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geoProxyEndpointResponseBody := "{}"
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railsServer, deferredClose := startRailsServer("Local Rails server", &geoProxyEndpointResponseBody)
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defer deferredClose()
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ws, wsDeferredClose, _ := startWorkhorseServer(railsServer.URL, false)
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defer wsDeferredClose()
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testCases := []testCase{
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{"LFS files are served locally", "/group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6", "Local Rails server received request to path /group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6"},
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{"jobs request is served locally", "/api/v4/jobs/request", "Local Rails server received request to path /api/v4/jobs/request"},
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{"health check is served locally", "/-/health", "Local Rails server received request to path /-/health"},
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{"unknown route is served locally", "/anything", "Local Rails server received request to path /anything"},
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}
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runTestCases(t, ws, testCases)
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}
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func TestGeoProxyFeatureEnabledOnNonGeoSecondarySite(t *testing.T) {
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geoProxyEndpointResponseBody := "{}"
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railsServer, deferredClose := startRailsServer("Local Rails server", &geoProxyEndpointResponseBody)
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defer deferredClose()
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ws, wsDeferredClose, _ := startWorkhorseServer(railsServer.URL, true)
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defer wsDeferredClose()
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testCases := []testCase{
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{"LFS files are served locally", "/group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6", "Local Rails server received request to path /group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6"},
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{"jobs request is served locally", "/api/v4/jobs/request", "Local Rails server received request to path /api/v4/jobs/request"},
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{"health check is served locally", "/-/health", "Local Rails server received request to path /-/health"},
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{"unknown route is served locally", "/anything", "Local Rails server received request to path /anything"},
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}
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runTestCases(t, ws, testCases)
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}
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func TestGeoProxyFeatureEnabledButWithAPIError(t *testing.T) {
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geoProxyEndpointResponseBody := "Invalid response"
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railsServer, deferredClose := startRailsServer("Local Rails server", &geoProxyEndpointResponseBody)
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defer deferredClose()
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ws, wsDeferredClose, _ := startWorkhorseServer(railsServer.URL, true)
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defer wsDeferredClose()
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testCases := []testCase{
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{"LFS files are served locally", "/group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6", "Local Rails server received request to path /group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6"},
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{"jobs request is served locally", "/api/v4/jobs/request", "Local Rails server received request to path /api/v4/jobs/request"},
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{"health check is served locally", "/-/health", "Local Rails server received request to path /-/health"},
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{"unknown route is served locally", "/anything", "Local Rails server received request to path /anything"},
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}
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runTestCases(t, ws, testCases)
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}
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func TestGeoProxyFeatureEnablingAndDisabling(t *testing.T) {
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remoteServer, rsDeferredClose := startRemoteServer("Geo primary")
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defer rsDeferredClose()
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geoProxyEndpointEnabledResponseBody := fmt.Sprintf(`{"geo_proxy_url":"%v"}`, remoteServer.URL)
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geoProxyEndpointDisabledResponseBody := "{}"
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geoProxyEndpointResponseBody := geoProxyEndpointEnabledResponseBody
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railsServer, deferredClose := startRailsServer("Local Rails server", &geoProxyEndpointResponseBody)
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defer deferredClose()
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ws, wsDeferredClose, waitForNextApiPoll := startWorkhorseServer(railsServer.URL, true)
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defer wsDeferredClose()
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testCasesLocal := []testCase{
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{"LFS files are served locally", "/group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6", "Local Rails server received request to path /group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6"},
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{"jobs request is served locally", "/api/v4/jobs/request", "Local Rails server received request to path /api/v4/jobs/request"},
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{"health check is served locally", "/-/health", "Local Rails server received request to path /-/health"},
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{"unknown route is served locally", "/anything", "Local Rails server received request to path /anything"},
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}
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testCasesProxied := []testCase{
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{"push from secondary is forwarded", "/-/push_from_secondary/foo/bar.git/info/refs", "Geo primary received request to path /-/push_from_secondary/foo/bar.git/info/refs"},
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{"LFS files are served locally", "/group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6", "Local Rails server received request to path /group/project.git/gitlab-lfs/objects/37446575700829a11278ad3a550f244f45d5ae4fe1552778fa4f041f9eaeecf6"},
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{"jobs request is forwarded", "/api/v4/jobs/request", "Geo primary received request to path /api/v4/jobs/request"},
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{"health check is served locally", "/-/health", "Local Rails server received request to path /-/health"},
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{"unknown route is forwarded", "/anything", "Geo primary received request to path /anything"},
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}
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// Enabled initially, run tests
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runTestCases(t, ws, testCasesProxied)
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// Disable proxying and run tests. It's safe to write to
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// geoProxyEndpointResponseBody because the polling goroutine is blocked.
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geoProxyEndpointResponseBody = geoProxyEndpointDisabledResponseBody
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waitForNextApiPoll()
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runTestCases(t, ws, testCasesLocal)
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// Re-enable proxying and run tests
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geoProxyEndpointResponseBody = geoProxyEndpointEnabledResponseBody
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waitForNextApiPoll()
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runTestCases(t, ws, testCasesProxied)
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}
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func TestGeoProxySetsCustomHeader(t *testing.T) {
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remoteServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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require.Equal(t, "1", r.Header.Get("Gitlab-Workhorse-Geo-Proxy"), "custom proxy header")
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w.WriteHeader(http.StatusOK)
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}))
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defer remoteServer.Close()
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geoProxyEndpointResponseBody := fmt.Sprintf(`{"geo_proxy_url":"%v"}`, remoteServer.URL)
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railsServer, deferredClose := startRailsServer("Local Rails server", &geoProxyEndpointResponseBody)
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defer deferredClose()
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ws, wsDeferredClose, _ := startWorkhorseServer(railsServer.URL, true)
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defer wsDeferredClose()
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http.Get(ws.URL)
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}
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func runTestCases(t *testing.T, ws *httptest.Server, testCases []testCase) {
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t.Helper()
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for _, tc := range testCases {
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t.Run(tc.desc, func(t *testing.T) {
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resp, err := http.Get(ws.URL + tc.path)
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require.NoError(t, err)
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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require.NoError(t, err)
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require.Equal(t, 200, resp.StatusCode, "response code")
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require.Equal(t, tc.expectedResponse, string(body))
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})
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}
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}
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func runTestCasesWithGeoProxyEnabled(t *testing.T, testCases []testCase) {
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remoteServer, rsDeferredClose := startRemoteServer("Geo primary")
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defer rsDeferredClose()
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geoProxyEndpointResponseBody := fmt.Sprintf(`{"geo_proxy_url":"%v"}`, remoteServer.URL)
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railsServer, deferredClose := startRailsServer("Local Rails server", &geoProxyEndpointResponseBody)
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defer deferredClose()
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ws, wsDeferredClose, _ := startWorkhorseServer(railsServer.URL, true)
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defer wsDeferredClose()
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runTestCases(t, ws, testCases)
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}
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func newUpstreamConfig(authBackend string) *config.Config {
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return &config.Config{
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Version: "123",
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DocumentRoot: testDocumentRoot,
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Backend: helper.URLMustParse(authBackend),
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ImageResizerConfig: config.DefaultImageResizerConfig,
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}
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}
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func startRemoteServer(serverName string) (*httptest.Server, func()) {
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ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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body := serverName + " received request to path " + r.URL.Path
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w.WriteHeader(200)
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fmt.Fprint(w, body)
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}))
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return ts, ts.Close
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}
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func startRailsServer(railsServerName string, geoProxyEndpointResponseBody *string) (*httptest.Server, func()) {
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ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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var body string
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if r.URL.Path == geoProxyEndpoint {
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w.Header().Set("Content-Type", "application/vnd.gitlab-workhorse+json")
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body = *geoProxyEndpointResponseBody
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} else {
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body = railsServerName + " received request to path " + r.URL.Path
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}
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w.WriteHeader(200)
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fmt.Fprint(w, body)
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}))
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return ts, ts.Close
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}
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func startWorkhorseServer(railsServerURL string, enableGeoProxyFeature bool) (*httptest.Server, func(), func()) {
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geoProxySleepC := make(chan struct{})
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geoProxySleep := func(time.Duration) {
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geoProxySleepC <- struct{}{}
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<-geoProxySleepC
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}
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myConfigureRoutes := func(u *upstream) {
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// Enable environment variable "feature flag"
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u.enableGeoProxyFeature = enableGeoProxyFeature
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// Replace the time.Sleep function with geoProxySleep
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u.geoProxyPollSleep = geoProxySleep
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// call original
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configureRoutes(u)
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}
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cfg := newUpstreamConfig(railsServerURL)
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upstreamHandler := newUpstream(*cfg, logrus.StandardLogger(), myConfigureRoutes)
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ws := httptest.NewServer(upstreamHandler)
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waitForNextApiPoll := func() {}
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if enableGeoProxyFeature {
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// Wait for geoProxySleep to be entered for the first time
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<-geoProxySleepC
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waitForNextApiPoll = func() {
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// Cause geoProxySleep to return
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geoProxySleepC <- struct{}{}
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// Wait for geoProxySleep to be entered again
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<-geoProxySleepC
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}
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}
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return ws, ws.Close, waitForNextApiPoll
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}
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