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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| package storage | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "errors" | ||
| "os" | ||
|
|
||
| "github.com/nlewo/comin/internal/deployment" | ||
| "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| type Data struct { | ||
| Version string `json:"version"` | ||
| // Deployments are order from the most recent to older | ||
| Deployments []deployment.Deployment `json:"deployments"` | ||
| } | ||
|
|
||
| type Storage struct { | ||
| Data | ||
| filename string | ||
| capacityMain int | ||
| capacityTesting int | ||
| } | ||
|
|
||
| func New(filename string, capacityMain, capacityTesting int) Storage { | ||
| s := Storage{ | ||
| filename: filename, | ||
| capacityMain: capacityMain, | ||
| capacityTesting: capacityTesting, | ||
| } | ||
| s.Deployments = make([]deployment.Deployment, 0) | ||
| s.Version = "1" | ||
| return s | ||
|
|
||
| } | ||
|
|
||
| // DeploymentInsert inserts a deployment and return an evicted | ||
| // deployment because the capacity has been reached. | ||
| func (s *Storage) DeploymentInsert(dpl deployment.Deployment) (getsEvicted bool, evicted deployment.Deployment) { | ||
| var qty, older int | ||
| capacity := s.capacityMain | ||
| if dpl.IsTesting() { | ||
| capacity = s.capacityTesting | ||
| } | ||
| for i, d := range s.Deployments { | ||
| if dpl.IsTesting() == d.IsTesting() { | ||
| older = i | ||
| qty += 1 | ||
| } | ||
| } | ||
| // If the capacity is reached, we remove the older elements | ||
| if qty >= capacity { | ||
| evicted = s.Deployments[older] | ||
| getsEvicted = true | ||
| s.Deployments = append(s.Deployments[:older], s.Deployments[older+1:]...) | ||
| } | ||
| s.Deployments = append([]deployment.Deployment{dpl}, s.Deployments...) | ||
| return | ||
| } | ||
|
|
||
| func (s *Storage) DeploymentList() []deployment.Deployment { | ||
| return s.Deployments | ||
| } | ||
|
|
||
| func (s *Storage) LastDeployment() (ok bool, d deployment.Deployment) { | ||
| if len(s.DeploymentList()) > 1 { | ||
| return true, s.DeploymentList()[0] | ||
| } | ||
| return | ||
| } | ||
|
|
||
| func (s *Storage) Load() (err error) { | ||
| var data Data | ||
| content, err := os.ReadFile(s.filename) | ||
| if errors.Is(err, os.ErrNotExist) { | ||
| return nil | ||
| } else if err != nil { | ||
| return | ||
| } | ||
| err = json.Unmarshal(content, &data) | ||
| if err != nil { | ||
| return | ||
| } | ||
| // FIXME: we should check the version | ||
| s.Deployments = data.Deployments | ||
| logrus.Infof("Loaded %d deployments from %s", len(s.Deployments), s.filename) | ||
| return | ||
| } | ||
|
|
||
| func (s *Storage) Commit() (err error) { | ||
| content, err := json.Marshal(s) | ||
| if err != nil { | ||
| return | ||
| } | ||
| err = os.WriteFile(s.filename, content, 0644) | ||
| return | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| package storage | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/nlewo/comin/internal/deployment" | ||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
|
|
||
| func TestDeploymentCommitAndLoad(t *testing.T) { | ||
| tmp := t.TempDir() | ||
| filename := tmp + "/state.json" | ||
| s := New(filename, 2, 2) | ||
| err := s.Commit() | ||
| assert.Nil(t, err) | ||
|
|
||
| s1 := New(filename, 2, 2) | ||
| err = s1.Load() | ||
| assert.Nil(t, err) | ||
| assert.Equal(t, 0, len(s.Deployments)) | ||
|
|
||
| s.DeploymentInsert(deployment.Deployment{UUID: "1", Operation: "switch"}) | ||
| s.Commit() | ||
| assert.Nil(t, err) | ||
|
|
||
| s1 = New(filename, 2, 2) | ||
| err = s1.Load() | ||
| assert.Nil(t, err) | ||
| assert.Equal(t, 1, len(s.Deployments)) | ||
| } | ||
|
|
||
| func TestLastDeployment(t *testing.T) { | ||
| s := New("", 2, 2) | ||
| ok, _ := s.LastDeployment() | ||
| assert.False(t, ok) | ||
| s.DeploymentInsert(deployment.Deployment{UUID: "1", Operation: "switch"}) | ||
| s.DeploymentInsert(deployment.Deployment{UUID: "2", Operation: "switch"}) | ||
| ok, last := s.LastDeployment() | ||
| assert.True(t, ok) | ||
| assert.Equal(t, "2", last.UUID) | ||
| } | ||
|
|
||
| func TestDeploymentInsert(t *testing.T) { | ||
| s := New("", 2, 2) | ||
| var hasEvicted bool | ||
| var evicted deployment.Deployment | ||
| hasEvicted, _ = s.DeploymentInsert(deployment.Deployment{UUID: "1", Operation: "switch"}) | ||
| assert.False(t, hasEvicted) | ||
| hasEvicted, _ = s.DeploymentInsert(deployment.Deployment{UUID: "2", Operation: "switch"}) | ||
| assert.False(t, hasEvicted) | ||
| hasEvicted, evicted = s.DeploymentInsert(deployment.Deployment{UUID: "3", Operation: "switch"}) | ||
| assert.True(t, hasEvicted) | ||
| assert.Equal(t, "1", evicted.UUID) | ||
|
|
||
| hasEvicted, _ = s.DeploymentInsert(deployment.Deployment{UUID: "4", Operation: "testing"}) | ||
| assert.False(t, hasEvicted) | ||
| hasEvicted, _ = s.DeploymentInsert(deployment.Deployment{UUID: "5", Operation: "testing"}) | ||
| assert.False(t, hasEvicted) | ||
| hasEvicted, evicted = s.DeploymentInsert(deployment.Deployment{UUID: "6", Operation: "testing"}) | ||
| assert.True(t, hasEvicted) | ||
| assert.Equal(t, "4", evicted.UUID) | ||
|
|
||
| hasEvicted, evicted = s.DeploymentInsert(deployment.Deployment{UUID: "7", Operation: "switch"}) | ||
| assert.True(t, hasEvicted) | ||
| assert.Equal(t, "2", evicted.UUID) | ||
| } |