flow: add initial flow dag
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
parent
cf2aa827e4
commit
240b6016df
21
flow/dag.go
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21
flow/dag.go
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@ -0,0 +1,21 @@
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package flow
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type node struct {
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name string
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}
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func (n *node) ID() string {
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return n.name
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}
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func (n *node) Name() string {
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return n.name
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}
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func (n *node) String() string {
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return n.name
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}
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func (n *node) Hashcode() interface{} {
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return n.name
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}
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68
flow/dag_test.go
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68
flow/dag_test.go
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@ -0,0 +1,68 @@
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package flow
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import (
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"fmt"
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"testing"
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"github.com/silas/dag"
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)
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func checkErr(t *testing.T, err error) {
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if err != nil {
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t.Fatal(err)
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}
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}
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func TestDag(t *testing.T) {
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d1 := &dag.AcyclicGraph{}
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d2 := &dag.AcyclicGraph{}
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d2v1 := d2.Add(&node{"Substep.Create"})
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v1 := d1.Add(&node{"AccountService.Create"})
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v2 := d1.Add(&node{"AuthzService.Create"})
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v3 := d1.Add(&node{"AuthnService.Create"})
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v4 := d1.Add(&node{"ProjectService.Create"})
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v5 := d1.Add(&node{"ContactService.Create"})
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v6 := d1.Add(&node{"NetworkService.Create"})
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v7 := d1.Add(&node{"MailerService.Create"})
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v8 := d1.Add(&node{"NestedService.Create"})
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v9 := d1.Add(d2v1)
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d1.Connect(dag.BasicEdge(v1, v2))
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d1.Connect(dag.BasicEdge(v1, v3))
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d1.Connect(dag.BasicEdge(v1, v4))
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d1.Connect(dag.BasicEdge(v1, v5))
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d1.Connect(dag.BasicEdge(v1, v6))
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d1.Connect(dag.BasicEdge(v1, v7))
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d1.Connect(dag.BasicEdge(v7, v8))
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d1.Connect(dag.BasicEdge(v8, v9))
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if err := d1.Validate(); err != nil {
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t.Fatal(err)
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}
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d1.TransitiveReduction()
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var steps [][]string
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fn := func(n dag.Vertex, idx int) error {
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if idx == 0 {
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steps = make([][]string, 1, 1)
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steps[0] = make([]string, 0, 1)
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} else if idx >= len(steps) {
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tsteps := make([][]string, idx+1, idx+1)
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copy(tsteps, steps)
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steps = tsteps
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steps[idx] = make([]string, 0, 1)
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}
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steps[idx] = append(steps[idx], fmt.Sprintf("%s", n))
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return nil
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}
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start := &node{"AccountService.Create"}
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err := d1.SortedDepthFirstWalk([]dag.Vertex{start}, fn)
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checkErr(t, err)
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if len(steps) != 4 {
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t.Fatalf("invalid steps: %#+v", steps)
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}
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if steps[3][0] != "Substep.Create" {
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t.Fatalf("invalid last step: %#+v", steps)
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}
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}
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7
flow/flow.go
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7
flow/flow.go
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@ -0,0 +1,7 @@
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// Package flow is an interface used for saga pattern messaging
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package flow
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type Step interface {
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// Endpoint returns service_name.service_method
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Endpoint() string
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}
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2
go.mod
2
go.mod
@ -6,10 +6,12 @@ require (
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github.com/dgrijalva/jwt-go v3.2.0+incompatible
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github.com/ef-ds/deque v1.0.4
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github.com/google/uuid v1.2.0
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github.com/heimdalr/dag v1.0.1 // indirect
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github.com/imdario/mergo v0.3.11
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github.com/kr/text v0.2.0 // indirect
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github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
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github.com/patrickmn/go-cache v2.1.0+incompatible
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github.com/silas/dag v0.0.0-20210121180416-41cf55125c34 // indirect
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golang.org/x/net v0.0.0-20210119194325-5f4716e94777
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gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
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)
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10
go.sum
10
go.sum
@ -3,8 +3,13 @@ github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumC
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github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
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github.com/ef-ds/deque v1.0.4 h1:iFAZNmveMT9WERAkqLJ+oaABF9AcVQ5AjXem/hroniI=
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github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
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github.com/go-test/deep v1.0.7 h1:/VSMRlnY/JSyqxQUzQLKVMAskpY/NZKFA5j2P+0pP2M=
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github.com/go-test/deep v1.0.7/go.mod h1:QV8Hv/iy04NyLBxAdO9njL0iVPN1S4d/A3NVv1V36o8=
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github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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github.com/google/uuid v1.2.0 h1:qJYtXnJRWmpe7m/3XlyhrsLrEURqHRM2kxzoxXqyUDs=
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github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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github.com/heimdalr/dag v1.0.1 h1:iR2K3DSUFDYx0GeV7iXBnZkedWS1xePSGrylQ197uxg=
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github.com/heimdalr/dag v1.0.1/go.mod h1:t+ZkR+sjKL4xhlE1B9rwpvwfo+x+2R0363efS+Oghns=
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github.com/imdario/mergo v0.3.11 h1:3tnifQM4i+fbajXKBHXWEH+KvNHqojZ778UH75j3bGA=
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github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
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github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
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@ -15,13 +20,12 @@ github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWb
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github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
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github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=
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github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
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github.com/unistack-org/micro v1.18.0 h1:EbFiII0bKV0Xcua7o6J30MFmm4/g0Hv3ECOKzsUBihU=
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github.com/silas/dag v0.0.0-20210121180416-41cf55125c34 h1:vBfVmA5mZhsQa2jr1FOL9nfA37N/jnbBmi5XUfviVTI=
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github.com/silas/dag v0.0.0-20210121180416-41cf55125c34/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
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golang.org/x/net v0.0.0-20210119194325-5f4716e94777 h1:003p0dJM77cxMSyCPFphvZf/Y5/NXf5fzg6ufd1/Oew=
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golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
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golang.org/x/sys v0.0.0-20201119102817-f84b799fce68 h1:nxC68pudNYkKU6jWhgrqdreuFiOQWj1Fs7T3VrH4Pjw=
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golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
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golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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