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Add visualization tool to debug image sources
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| package visualize | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net/http" | ||
| "net/netip" | ||
| "strings" | ||
| "sync" | ||
| ) | ||
|
|
||
| type EventStore interface { | ||
| Record(id string, peer netip.Addr, status int, mirror bool) | ||
| FilterById(include []string) EventStore | ||
| FilterByDirection(rootIsSource bool) EventStore | ||
| Dot() string | ||
| } | ||
|
|
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| // TODO: Include blob or manifest | ||
| type edge struct { | ||
| node string | ||
| id string | ||
| status int | ||
| rootIsSource bool | ||
| } | ||
|
|
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| var _ EventStore = &MemoryStore{} | ||
|
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| type MemoryStore struct { | ||
| mx sync.RWMutex | ||
| edges []edge | ||
| edgeIndex map[string]int | ||
| } | ||
|
|
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| func NewMemoryStore() *MemoryStore { | ||
| return &MemoryStore{ | ||
| edges: []edge{}, | ||
| edgeIndex: map[string]int{}, | ||
| } | ||
| } | ||
|
|
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| func (m *MemoryStore) Record(id string, peer netip.Addr, status int, mirror bool) { | ||
| m.mx.Lock() | ||
| defer m.mx.Unlock() | ||
|
|
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| e := edge{ | ||
| node: peer.String(), | ||
| id: id, | ||
| status: status, | ||
| rootIsSource: mirror, | ||
| } | ||
| m.edges = append(m.edges, e) | ||
| m.edgeIndex[id] = len(m.edges) - 1 | ||
| } | ||
|
|
||
| func (m *MemoryStore) FilterById(include []string) EventStore { | ||
| m.mx.RLock() | ||
| defer m.mx.RUnlock() | ||
|
|
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| f := NewMemoryStore() | ||
| for _, v := range include { | ||
| idx, ok := m.edgeIndex[v] | ||
| if !ok { | ||
| continue | ||
| } | ||
| edge := m.edges[idx] | ||
| f.edges = append(f.edges, edge) | ||
| f.edgeIndex[v] = len(f.edges) - 1 | ||
| } | ||
| return f | ||
| } | ||
|
|
||
| func (m *MemoryStore) FilterByDirection(rootIsSource bool) EventStore { | ||
| m.mx.RLock() | ||
| defer m.mx.RUnlock() | ||
|
|
||
| f := NewMemoryStore() | ||
| for _, edge := range m.edges { | ||
| if edge.rootIsSource != rootIsSource { | ||
| continue | ||
| } | ||
| f.edges = append(f.edges, edge) | ||
| f.edgeIndex[edge.id] = len(f.edges) - 1 | ||
| } | ||
| return f | ||
| } | ||
|
|
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| func (m *MemoryStore) Dot() string { | ||
| m.mx.RLock() | ||
| defer m.mx.RUnlock() | ||
|
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| nodeIndex := map[string]interface{}{} | ||
| dotNodes := []string{} | ||
| dotEdges := []string{} | ||
| for _, edge := range m.edges { | ||
| color := "" | ||
| switch edge.status { | ||
| case 0: | ||
| color = "yellow" | ||
| case http.StatusOK: | ||
| color = "green" | ||
| default: | ||
| color = "red" | ||
| } | ||
|
|
||
| src := "n0" | ||
| dest := edge.node | ||
| if !edge.rootIsSource { | ||
| src = edge.node | ||
| dest = "n0" | ||
| } | ||
|
|
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| id := edge.id | ||
| if strings.HasPrefix(id, "sha256:") { | ||
| id = id[:14] | ||
| } | ||
| dotEdge := fmt.Sprintf(`%q -> %q[color=%s tooltip=%q]`, src, dest, color, id) | ||
| dotEdges = append(dotEdges, dotEdge) | ||
|
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||
| if _, ok := nodeIndex[edge.node]; ok { | ||
| continue | ||
| } | ||
| nodeIndex[edge.node] = nil | ||
| dotNode := fmt.Sprintf(`%q[label="%s"];`, edge.node, edge.node) | ||
| dotNodes = append(dotNodes, dotNode) | ||
| } | ||
|
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| dot := fmt.Sprintf(`digraph { | ||
| layout="circo"; | ||
| root="n0"; | ||
| n0[label="host"] | ||
| %s | ||
| %s | ||
| }`, strings.Join(dotNodes, "\n\t"), strings.Join(dotEdges, "\n\t")) | ||
| return strings.TrimSpace(dot) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| package visualize | ||
|
|
||
| import ( | ||
| "net/http" | ||
| "net/netip" | ||
| "os" | ||
| "strings" | ||
| "testing" | ||
|
|
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| "github.com/stretchr/testify/require" | ||
| ) | ||
|
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| func TestMemoryStore(t *testing.T) { | ||
| store := NewMemoryStore() | ||
| store.Record("one", netip.MustParseAddr("127.0.0.1"), http.StatusOK, true) | ||
| store.Record("two", netip.MustParseAddr("127.0.0.1"), http.StatusOK, true) | ||
| store.Record("three", netip.MustParseAddr("0.0.0.0"), http.StatusOK, true) | ||
|
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| dot := store.Dot() | ||
| b, err := os.ReadFile("./testdata/all.dot") | ||
| require.NoError(t, err) | ||
| expected := strings.TrimSpace(string(b)) | ||
| require.Equal(t, expected, dot) | ||
|
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| dot = store.Filter([]string{"two", "three"}).Dot() | ||
|
Check failure on line 25 in pkg/visualize/store_test.go
|
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| b, err = os.ReadFile("./testdata/filter.dot") | ||
| require.NoError(t, err) | ||
| expected = strings.TrimSpace(string(b)) | ||
| require.Equal(t, expected, dot) | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| digraph { | ||
| layout="circo"; | ||
| root="n0"; | ||
|
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| n0[label="host"] | ||
|
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| "127.0.0.1"[label="127.0.0.1"]; | ||
| "0.0.0.0"[label="0.0.0.0"]; | ||
|
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| "n0" -> "127.0.0.1"[color=green tooltip="one"] | ||
| "n0" -> "127.0.0.1"[color=green tooltip="two"] | ||
| "n0" -> "0.0.0.0"[color=green tooltip="three"] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| digraph { | ||
| layout="circo"; | ||
| root="n0"; | ||
|
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| n0[label="host"] | ||
|
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| "127.0.0.1"[label="127.0.0.1"]; | ||
| "0.0.0.0"[label="0.0.0.0"]; | ||
|
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| "n0" -> "127.0.0.1"[color=green tooltip="two"] | ||
| "n0" -> "0.0.0.0"[color=green tooltip="three"] | ||
| } |
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