mirror of
https://git.rwth-aachen.de/acs/public/villas/web-backend-go/
synced 2025-03-30 00:00:12 +01:00
AMQP: move message processing into infinite loop
This commit is contained in:
Sonja Happ
parent
2e6b980d3d
commit
bfcc8983fe
1 changed files with 110 additions and 113 deletions
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@ -120,127 +120,18 @@ func ConnectAMQP(uri string) error {
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return fmt.Errorf("AMQP: failed to consume deliveries, error: %v", err)
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}
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forever := make(chan bool)
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// consuming queue
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go func() {
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for message := range client.replies {
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//err = message.Ack(false)
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//if err != nil {
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// fmt.Println("AMQP: Unable to ack message:", err)
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//}
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var payload ICUpdate
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err := json.Unmarshal(message.Body, &payload)
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if err != nil {
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log.Println("AMQP: Could not unmarshal message to JSON:", string(message.Body), "err: ", err)
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continue
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}
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ICUUID := payload.Properties.UUID
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_, err = uuid.Parse(ICUUID)
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if err != nil {
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//log.Printf("AMQP: UUID not valid: %v, message ignored: %v \n", ICUUID, string(message.Body))
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continue
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} else {
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var sToBeUpdated infrastructure_component.InfrastructureComponent
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err = sToBeUpdated.ByUUID(ICUUID)
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if err == gorm.ErrRecordNotFound {
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// create new record
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var newICReq infrastructure_component.AddICRequest
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newICReq.InfrastructureComponent.UUID = payload.Properties.UUID
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if payload.Properties.Name == nil ||
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payload.Properties.Category == nil ||
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payload.Properties.Type == nil {
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// cannot create new IC because required information (name, type, and/or category missing)
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log.Println("AMQP: Cannot create new IC, required field(s) is/are missing: name, type, category")
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continue
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}
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newICReq.InfrastructureComponent.Name = *payload.Properties.Name
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newICReq.InfrastructureComponent.Category = *payload.Properties.Category
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newICReq.InfrastructureComponent.Type = *payload.Properties.Type
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// add optional params
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if payload.State != nil {
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newICReq.InfrastructureComponent.State = *payload.State
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} else {
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newICReq.InfrastructureComponent.State = "unknown"
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}
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if payload.Properties.Location != nil {
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newICReq.InfrastructureComponent.Properties = postgres.Jsonb{json.RawMessage(`{"location" : " ` + *payload.Properties.Location + `"}`)}
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}
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// Validate the new IC
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err = newICReq.Validate()
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if err != nil {
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log.Println("AMQP: Validation of new IC failed:", err)
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continue
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}
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// Create the new IC
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newIC := newICReq.CreateIC()
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// save IC
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err = newIC.Save()
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if err != nil {
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log.Println("AMQP: Saving new IC to DB failed:", err)
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continue
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}
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log.Println("AMQP: Created IC ", newIC.Name)
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} else if err != nil {
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log.Println("AMQP: Database error for IC", ICUUID, " DB error message: ", err)
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continue
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} else {
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var updatedICReq infrastructure_component.UpdateICRequest
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if payload.State != nil {
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updatedICReq.InfrastructureComponent.State = *payload.State
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}
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if payload.Properties.Type != nil {
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updatedICReq.InfrastructureComponent.Type = *payload.Properties.Type
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}
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if payload.Properties.Category != nil {
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updatedICReq.InfrastructureComponent.Category = *payload.Properties.Category
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}
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if payload.Properties.Name != nil {
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updatedICReq.InfrastructureComponent.Name = *payload.Properties.Name
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}
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if payload.Properties.Location != nil {
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updatedICReq.InfrastructureComponent.Properties = postgres.Jsonb{json.RawMessage(`{"location" : " ` + *payload.Properties.Location + `"}`)}
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}
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// Validate the updated IC
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if err = updatedICReq.Validate(); err != nil {
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log.Println("AMQP: Validation of updated IC failed:", err)
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continue
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}
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// Create the updated IC from old IC
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updatedIC := updatedICReq.UpdatedIC(sToBeUpdated)
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// Finally update the IC in the DB
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err = sToBeUpdated.Update(updatedIC)
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if err != nil {
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log.Println("AMQP: Unable to update IC", sToBeUpdated.Name, "in DB: ", err)
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continue
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}
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log.Println("AMQP: Updated IC ", sToBeUpdated.Name)
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}
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for {
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for message := range client.replies {
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processMessage(message)
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}
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time.Sleep(2) // sleep for 2 sek
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}
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}()
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log.Printf(" AMQP: Waiting for messages... ")
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<-forever
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return nil
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}
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@ -333,3 +224,109 @@ func StartAMQP(AMQPurl string, api *gin.RouterGroup) error {
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return nil
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}
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func processMessage(message amqp.Delivery) {
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var payload ICUpdate
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err := json.Unmarshal(message.Body, &payload)
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if err != nil {
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log.Println("AMQP: Could not unmarshal message to JSON:", string(message.Body), "err: ", err)
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return
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}
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ICUUID := payload.Properties.UUID
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_, err = uuid.Parse(ICUUID)
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if err != nil {
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log.Printf("AMQP: UUID not valid: %v, message ignored: %v \n", ICUUID, string(message.Body))
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return
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}
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var sToBeUpdated infrastructure_component.InfrastructureComponent
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err = sToBeUpdated.ByUUID(ICUUID)
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if err == gorm.ErrRecordNotFound {
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// create new record
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var newICReq infrastructure_component.AddICRequest
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newICReq.InfrastructureComponent.UUID = payload.Properties.UUID
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if payload.Properties.Name == nil ||
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payload.Properties.Category == nil ||
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payload.Properties.Type == nil {
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// cannot create new IC because required information (name, type, and/or category missing)
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log.Println("AMQP: Cannot create new IC, required field(s) is/are missing: name, type, category")
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return
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}
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newICReq.InfrastructureComponent.Name = *payload.Properties.Name
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newICReq.InfrastructureComponent.Category = *payload.Properties.Category
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newICReq.InfrastructureComponent.Type = *payload.Properties.Type
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// add optional params
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if payload.State != nil {
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newICReq.InfrastructureComponent.State = *payload.State
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} else {
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newICReq.InfrastructureComponent.State = "unknown"
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}
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if payload.Properties.Location != nil {
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newICReq.InfrastructureComponent.Properties = postgres.Jsonb{json.RawMessage(`{"location" : " ` + *payload.Properties.Location + `"}`)}
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}
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// Validate the new IC
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err = newICReq.Validate()
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if err != nil {
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log.Println("AMQP: Validation of new IC failed:", err)
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return
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}
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// Create the new IC
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newIC := newICReq.CreateIC()
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// save IC
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err = newIC.Save()
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if err != nil {
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log.Println("AMQP: Saving new IC to DB failed:", err)
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return
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}
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log.Println("AMQP: Created IC ", newIC.Name)
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} else if err != nil {
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log.Println("AMQP: Database error for IC", ICUUID, " DB error message: ", err)
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return
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} else {
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var updatedICReq infrastructure_component.UpdateICRequest
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if payload.State != nil {
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updatedICReq.InfrastructureComponent.State = *payload.State
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}
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if payload.Properties.Type != nil {
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updatedICReq.InfrastructureComponent.Type = *payload.Properties.Type
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}
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if payload.Properties.Category != nil {
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updatedICReq.InfrastructureComponent.Category = *payload.Properties.Category
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}
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if payload.Properties.Name != nil {
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updatedICReq.InfrastructureComponent.Name = *payload.Properties.Name
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}
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if payload.Properties.Location != nil {
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updatedICReq.InfrastructureComponent.Properties = postgres.Jsonb{json.RawMessage(`{"location" : " ` + *payload.Properties.Location + `"}`)}
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}
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// Validate the updated IC
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if err = updatedICReq.Validate(); err != nil {
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log.Println("AMQP: Validation of updated IC failed:", err)
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return
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}
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// Create the updated IC from old IC
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updatedIC := updatedICReq.UpdatedIC(sToBeUpdated)
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// Finally update the IC in the DB
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err = sToBeUpdated.Update(updatedIC)
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if err != nil {
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log.Println("AMQP: Unable to update IC", sToBeUpdated.Name, "in DB: ", err)
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return
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}
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log.Println("AMQP: Updated IC ", sToBeUpdated.Name)
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}
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}
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