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# Which Problems Are Solved
The event execution system currently uses a projection handler that
subscribes to and processes all events for all instances. This creates a
high static cost because the system over-fetches event data, handling
many events that are not needed by most instances. This inefficiency is
also reflected in high "rows returned" metrics in the database.
# How the Problems Are Solved
Eliminate the use of a project handler. Instead, events for which
"execution targets" are defined, are directly pushed to the queue by the
eventstore. A Router is populated in the Instance object in the authz
middleware.
- By joining the execution targets to the instance, no additional
queries are needed anymore.
- As part of the instance object, execution targets are now cached as
well.
- Events are queued within the same transaction, giving transactional
guarantees on delivery.
- Uses the "insert many fast` variant of River. Multiple jobs are queued
in a single round-trip to the database.
- Fix compatibility with PostgreSQL 15
# Additional Changes
- The signing key was stored as plain-text in the river job payload in
the DB. This violated our [Secrets
Storage](https://zitadel.com/docs/concepts/architecture/secrets#secrets-storage)
principle. This change removed the field and only uses the encrypted
version of the signing key.
- Fixed the target ordering from descending to ascending.
- Some minor linter warnings on the use of `io.WriteString()`.
# Additional Context
- Introduced in https://github.com/zitadel/zitadel/pull/9249
- Closes https://github.com/zitadel/zitadel/issues/10553
- Closes https://github.com/zitadel/zitadel/issues/9832
- Closes https://github.com/zitadel/zitadel/issues/10372
- Closes https://github.com/zitadel/zitadel/issues/10492
---------
Co-authored-by: Stefan Benz <46600784+stebenz@users.noreply.github.com>
(cherry picked from commit a9ebc06c77)
130 lines
2.8 KiB
Go
130 lines
2.8 KiB
Go
package target
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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)
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var (
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eventGlobalTarget = Target{ExecutionID: "event", TargetID: "event_global"}
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eventGroupTarget = Target{ExecutionID: "event/foo.*", TargetID: "event_group"}
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eventMatchTarget = Target{ExecutionID: "event/foo.bar", TargetID: "event_specific"}
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functionCallTarget1 = Target{ExecutionID: "function/Call", TargetID: "function_call_1"}
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functionCallTarget2 = Target{ExecutionID: "function/Call", TargetID: "function_call_2"}
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testTargets = []Target{eventGlobalTarget, eventGroupTarget, eventMatchTarget, functionCallTarget1, functionCallTarget2}
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)
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func TestBinarySearchRouter_Get(t *testing.T) {
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r := NewRouter(testTargets)
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type args struct {
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id string
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}
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tests := []struct {
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name string
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args args
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wantTargets []Target
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wantOk bool
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}{
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{
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name: "event global does not match exactly",
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args: args{
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id: "event/bar.foo",
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},
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wantTargets: nil,
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wantOk: false,
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},
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{
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name: "event group does not match exactly",
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args: args{
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id: "event/foo.bar.baz",
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},
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wantTargets: nil,
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wantOk: false,
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},
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{
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name: "event match",
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args: args{
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id: "event/foo.bar",
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},
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wantTargets: []Target{eventMatchTarget},
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wantOk: true,
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},
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{
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name: "function match",
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args: args{
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id: "function/Call",
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},
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wantTargets: []Target{functionCallTarget1, functionCallTarget2},
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wantOk: true,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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got, ok := r.Get(tt.args.id)
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assert.Equal(t, tt.wantTargets, got)
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assert.Equal(t, tt.wantOk, ok)
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})
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}
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}
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func TestBinarySearchRouter_GetEventBestMatch(t *testing.T) {
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type args struct {
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id string
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}
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tests := []struct {
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name string
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targets []Target
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args args
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wantTargets []Target
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wantOk bool
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}{
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{
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name: "event global match",
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targets: testTargets,
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args: args{
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id: "event/bar.foo",
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},
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wantTargets: []Target{eventGlobalTarget},
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wantOk: true,
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},
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{
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name: "event group match",
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targets: testTargets[1:],
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args: args{
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id: "event/foo.bar.baz",
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},
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wantTargets: []Target{eventGroupTarget},
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wantOk: true,
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},
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{
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name: "event match",
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targets: testTargets,
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args: args{
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id: "event/foo.bar",
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},
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wantTargets: []Target{eventMatchTarget},
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wantOk: true,
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},
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{
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name: "function match",
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targets: testTargets,
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args: args{
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id: "function/Call",
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},
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wantTargets: []Target{functionCallTarget1, functionCallTarget2},
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wantOk: true,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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r := NewRouter(tt.targets)
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got, ok := r.GetEventBestMatch(tt.args.id)
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assert.Equal(t, tt.wantTargets, got)
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assert.Equal(t, tt.wantOk, ok)
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})
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}
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}
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