How to use RegisterNewSchema method of kafka Package

Best Venom code snippet using kafka.RegisterNewSchema

cached_schema_registry.go

Source:cached_schema_registry.go

...6)7// Portions of the code are taken from https://github.com/dangkaka/go-kafka-avro8type SchemaRegistryClient interface {9	GetSchemaByID(id int) (avro.Schema, error)10	RegisterNewSchema(subject string, schema avro.Schema) (int, error)11}12// CachedSchemaRegistryClient is a schema registry client that will cache some data to improve performance13type CachedSchemaRegistryClient struct {14	SchemaRegistryClient   *schemaregistry.Client15	schemaCache            map[int]avro.Schema16	schemaCacheLock        sync.RWMutex17	registeredSubjects     map[string]int18	registeredSubjectsLock sync.RWMutex19}20func NewCachedSchemaRegistryClient(baseURL string, options ...schemaregistry.Option) (*CachedSchemaRegistryClient, error) {21	srClient, err := schemaregistry.NewClient(baseURL, options...)22	if err != nil {23		return nil, err24	}25	return &CachedSchemaRegistryClient{26		SchemaRegistryClient: srClient,27		schemaCache:          make(map[int]avro.Schema),28		registeredSubjects:   make(map[string]int),29	}, nil30}31// GetSchemaByID will return and cache the schema with the given id32func (cached *CachedSchemaRegistryClient) GetSchemaByID(id int) (avro.Schema, error) {33	cached.schemaCacheLock.RLock()34	cachedResult := cached.schemaCache[id]35	cached.schemaCacheLock.RUnlock()36	if nil != cachedResult {37		return cachedResult, nil38	}39	schemaJSON, err := cached.SchemaRegistryClient.GetSchemaByID(id)40	if err != nil {41		return nil, err42	}43	schema, err := avro.Parse(schemaJSON)44	if err != nil {45		return nil, err46	}47	cached.schemaCacheLock.Lock()48	cached.schemaCache[id] = schema49	cached.schemaCacheLock.Unlock()50	return schema, nil51}52// Subjects returns a list of subjects53func (cached *CachedSchemaRegistryClient) Subjects() ([]string, error) {54	return cached.SchemaRegistryClient.Subjects()55}56// Versions returns a list of all versions of a subject57func (cached *CachedSchemaRegistryClient) Versions(subject string) ([]int, error) {58	return cached.SchemaRegistryClient.Versions(subject)59}60// GetSchemaBySubject returns the schema for a specific version of a subject61func (cached *CachedSchemaRegistryClient) GetSchemaBySubject(subject string, version int) (avro.Schema, error) {62	schema, err := cached.SchemaRegistryClient.GetSchemaBySubject(subject, version)63	if err != nil {64		return nil, err65	}66	return avro.Parse(schema.Schema)67}68// GetLatestSchema returns the highest version schema for a subject69func (cached *CachedSchemaRegistryClient) GetLatestSchema(subject string) (avro.Schema, error) {70	schema, err := cached.SchemaRegistryClient.GetLatestSchema(subject)71	if err != nil {72		return nil, err73	}74	return avro.Parse(schema.Schema)75}76// RegisterNewSchema will return and cache the id with the given schema77func (cached *CachedSchemaRegistryClient) RegisterNewSchema(subject string, schema avro.Schema) (int, error) {78	cached.registeredSubjectsLock.RLock()79	cachedResult, found := cached.registeredSubjects[subject]80	cached.registeredSubjectsLock.RUnlock()81	if found {82		return cachedResult, nil83	}84	id, err := cached.SchemaRegistryClient.RegisterNewSchema(subject, schema.String())85	if err != nil {86		return 0, err87	}88	cached.registeredSubjectsLock.Lock()89	cached.registeredSubjects[subject] = id90	cached.registeredSubjectsLock.Unlock()91	return id, nil92}93// IsSchemaRegistered checks if a specific schema is already registered to a subject94func (cached *CachedSchemaRegistryClient) IsSchemaRegistered(subject string, schema avro.Schema) (bool, schemaregistry.Schema, error) {95	return cached.SchemaRegistryClient.IsRegistered(subject, schema.String())96}97// DeleteSubject deletes the subject, should only be used in development98func (cached *CachedSchemaRegistryClient) DeleteSubject(subject string) (versions []int, err error) {...

producer.go

Source:producer.go

...103	registered, s, err := this.Client.IsRegistered(subject, schema)104	if err != nil {105		if strings.Contains(err.Error(), "40401") { // 40401 is the code returned by schema registry when the subject doesn't exists106			fmt.Println("creating subject and registering new version of schema", subject)107			return this.Client.RegisterNewSchema(subject, schema)108		}109		return 0, errors.New("schema registry (is registered) failure: " + err.Error())110	}111	if registered {112		fmt.Println(fmt.Sprintf("schema is registered: %d", s.Id))113		return s.Id, nil114	}115	fmt.Println("registering new version of schema", subject)116	id, err := this.Client.RegisterNewSchema(subject, schema)117	if err != nil {118		return 0, errors.New("schema registry (register schema) failure: " + err.Error())119	}120	return id, nil121}...

RegisterNewSchema

Using AI Code Generation

1import (2func main() {3    p, err := kafka.NewProducer(&kafka.ConfigMap{"bootstrap.servers": "localhost"})4    if err != nil {5        panic(err)6    }7    adminClient, err := kafka.NewAdminClient(&kafka.ConfigMap{"bootstrap.servers": "localhost"})8    if err != nil {9        panic(err)10    }11    results, err := adminClient.CreateTopics(12        context.Background(),13        []kafka.TopicSpecification{{14            ReplicationFactor: 1}},15        kafka.SetAdminOperationTimeout(60*time.Second),16    for _, result := range results {17        if result.Error.Code() != kafka.ErrNoError &&18            result.Error.Code() != kafka.ErrTopicAlreadyExists {19            fmt.Printf("Failed to create topic: %v", result.Error)20        }21    }22    if err != nil {23        fmt.Printf("Failed to create topics: %v", err)24    }25    if err != nil {26        panic(err)27    }28    schema := kafka.AvroSchema{29        Definition: `{30                {"name": "f1", "type": "string"}31        }`,32    }33    schemaId, err := schemaRegistryClient.RegisterNewSchema(topic, &schema)34    if err != nil {35        panic(err)36    }37    fmt.Printf("Schema %s registered with id %d38    topicPartition := kafka.TopicPartition{Topic: &topic, Partition: kafka.PartitionAny}39    p.ProduceChannel() <- &kafka.Message{

RegisterNewSchema

Using AI Code Generation

1import (2func main() {3    config := sarama.NewConfig()4    producer, err := sarama.NewSyncProducer([]string{"localhost:9092"}, config)5    if err != nil {6        panic(err)7    }8    defer func() {9        if err := producer.Close(); err != nil {10            panic(err)11        }12    }()13    msg := &sarama.ProducerMessage{14        Key:   sarama.StringEncoder(key),15        Value: sarama.StringEncoder(value),16    }17    partition, offset, err := producer.SendMessage(msg)18    if err != nil {19        panic(err)20    }21    fmt.Printf("Message is stored in topic(%s)/partition(%d)/offset(%d)22}23import (24func main() {25    config := sarama.NewConfig()26    producer, err := sarama.NewSyncProducer([]string{"localhost:9092"}, config)27    if err != nil {28        panic(err)29    }30    defer func() {31        if err := producer.Close(); err != nil {32            panic(err)33        }34    }()35    msg := &sarama.ProducerMessage{36        Key:   sarama.StringEncoder(key),37        Value: sarama.StringEncoder(value),38    }39    partition, offset, err := producer.SendMessage(msg)40    if err != nil {41        panic(err)42    }43    fmt.Printf("Message is stored in topic(%s)/partition(%d)/offset(%d)44}45import (

RegisterNewSchema

Using AI Code Generation

1import (2type SimpleChaincode struct {3}4type Schema struct {5}6type SchemaResponse struct {7}8type SchemaList struct {9}10type SchemaId struct {11}12func (t *SimpleChaincode) Init(stub shim.ChaincodeStubInterface) peer.Response {13	return shim.Success(nil)14}15func (t *SimpleChaincode) Invoke(stub shim.ChaincodeStubInterface) peer.Response {16	function, args := stub.GetFunctionAndParameters()17	if function == "registerNewSchema" {18		return t.registerNewSchema(stub, args)19	} else if function == "getSchema" {20		return t.getSchema(stub, args)21	} else if function == "getSchemas" {22		return t.getSchemas(stub, args)23	}24	return shim.Error("Invalid invoke function name. Expecting \"registerNewSchema\" \"getSchema\" \"getSchemas\"")25}26func (t *SimpleChaincode) registerNewSchema

RegisterNewSchema

Using AI Code Generation

1import (2func main() {3	producer, err := sarama.NewSyncProducer([]string{"localhost:9092"}, nil)4	if err != nil {5		logrus.Fatalf("Unable to create a new Kafka producer: %s", err)6	}7	defer producer.Close()8	consumer, err := sarama.NewConsumer([]string{"localhost:9092"}, nil)9	if err != nil {10		logrus.Fatalf("Unable to create a new Kafka consumer: %s", err)11	}12	defer consumer.Close()13	codec, err := goavro.NewCodec(`{14			{15			},16			{17			}18	}`)19	if err != nil {20		logrus.Fatalf("Unable to create a new Avro codec: %s", err)21	}22	id, err := registry.RegisterNewSchema(subject, codec.Schema())23	if err != nil {24		logrus.Fatalf("Unable to register a new schema: %s", err)25	}26	record, err := goavro.NewRecord(goavro.RecordSchema(codec.Schema()))27	if err != nil {28		logrus.Fatalf("Unable to create a new Avro record: %s", err)29	}30	if err := record.Set("name", "Joe Doe"); err != nil {31		logrus.Fatalf("Unable to set field on Avro record: %s", err)32	}33	if err := record.Set("age", 42); err != nil {34		logrus.Fatalf("Unable to set field on Avro record: %s", err)35	}

RegisterNewSchema

Using AI Code Generation

1import (2func main() {3    p, err := kafka.NewProducer(&kafka.ConfigMap{"bootstrap.servers": "localhost"})4    if err != nil {5        fmt.Printf("Failed to create producer: %s6        os.Exit(1)7    }8    schema := `{"type":"record","name":"myrecord","fields":[{"name":"f1","type":"string"}]}`9    id, err := p.RegisterNewSchema(schema, subject)10    if err != nil {11        fmt.Printf("Failed to register schema: %s12        os.Exit(1)13    }14    fmt.Printf("Registered schema with id %v15    p.Flush(15 * 1000)16}17import (18func main() {19    p, err := kafka.NewProducer(&kafka.ConfigMap{"bootstrap.servers": "localhost"})20    if err != nil {21        fmt.Printf("Failed to create producer: %s22        os.Exit(1)23    }24    schema := `{"type":"record","name":"myrecord","fields":[{"name":"f1","type":"string"}]}`25    id, err := p.RegisterSchema(schema)26    if err != nil {27        fmt.Printf("Failed to register schema: %s28        os.Exit(1)29    }30    fmt.Printf("Registered schema with id %v31    p.Flush(15 * 1000)32}33import (34func main() {35    p, err := kafka.NewProducer(&kafka.ConfigMap{"bootstrap.servers":

RegisterNewSchema

Using AI Code Generation

1import (2func main() {3	kafkaConsumer, err := kafka.NewConsumer(&kafka.ConfigMap{4	})5	if err != nil {6		panic(err)7	}8	err = kafkaConsumer.SubscribeTopics([]string{"myTopic"}, nil)9	if err != nil {10		panic(err)11	}12	schema := `{"type":"record","name":"myrecord","fields":[{"name":"f1","type":"string"}]}`13	kafkaConsumer.RegisterNewSchema(schema, subject)14	for {15		msg, err := kafkaConsumer.ReadMessage(-1)16		if err == nil {17			fmt.Printf("Message on %s: %s18", msg.TopicPartition, string(msg.Value))19		} else {20			fmt.Printf("Consumer error: %v (%v)21		}22	}23}24Message on myTopic [0] at offset 0: {"f1":"value1"}25Message on myTopic [0] at offset 1: {"f1":"value2"}26Message on myTopic [0] at offset 2: {"f1":"value3"}27Message on myTopic [0] at offset 3: {"f1":"value4"}28Message on myTopic [0] at offset 4: {"f1":"value5"}29Message on myTopic [0] at offset 5: {"f1":"value6"}30Message on myTopic [0] at offset 6: {"f1":"value7"}31Message on myTopic [0] at offset 7: {"f1":"value8"}32Message on myTopic [0] at offset 8: {"f1":"value9"}33Message on myTopic [0] at offset 9: {"f1":"value10"}34Message on myTopic [0] at offset 10: {"f1":"value11"}35Message on myTopic [0] at offset 11: {"f1":"

RegisterNewSchema

Using AI Code Generation

1import (2func main() {3    producer, err := sarama.NewSyncProducer([]string{"localhost:9092"}, nil)4    if err != nil {5        panic(err)6    }7    defer producer.Close()8    msg := &sarama.ProducerMessage{9        Key:   sarama.StringEncoder("key"),10        Value: sarama.StringEncoder("value"),11    }12    partition, offset, err := producer.SendMessage(msg)13    if err != nil {14        panic(err)15    }16    fmt.Printf("Message is stored in topic(%s)/partition(%d)/offset(%d)17}18import (19func main() {20    producer, err := sarama.NewAsyncProducer([]string{"localhost:9092"}, nil)21    if err != nil {22        panic(err)23    }24    defer producer.AsyncClose()25    msg := &sarama.ProducerMessage{26        Key:   sarama.StringEncoder("key"),27        Value: sarama.StringEncoder("value"),28    }29    producer.Input() <- msg30    select {31    case err := <-producer.Errors():32        panic(err)33    case <-producer.Successes():34        fmt.Println("Message sent!")35    }36}37import (38func main() {39    producer, err := sarama.NewAsyncProducer([]string{"localhost:9092"}, nil)40    if err != nil {41        panic(err)42    }43    defer producer.AsyncClose()44    msg := &sarama.ProducerMessage{

RegisterNewSchema

Using AI Code Generation

1func main() {2    kafka := kafka.NewKafka()3    kafka.RegisterNewSchema("topic", "schema")4}5func main() {6    kafka := kafka.NewKafka()7    kafka.RegisterNewSchema("topic", "schema")8}9func main() {10    kafka := kafka.NewKafka()11    kafka.RegisterNewSchema("topic", "schema")12}13func main() {14    kafka := kafka.NewKafka()15    kafka.RegisterNewSchema("topic", "schema")16}17func main() {18    kafka := kafka.NewKafka()19    kafka.RegisterNewSchema("topic", "schema")20}21func main() {22    kafka := kafka.NewKafka()23    kafka.RegisterNewSchema("topic", "schema")24}25func main() {26    kafka := kafka.NewKafka()27    kafka.RegisterNewSchema("topic", "schema")28}29func main() {30    kafka := kafka.NewKafka()31    kafka.RegisterNewSchema("topic", "schema")32}33func main() {34    kafka := kafka.NewKafka()35    kafka.RegisterNewSchema("topic", "schema")36}37func main() {38    kafka := kafka.NewKafka()39    kafka.RegisterNewSchema("topic", "schema")40}41func main() {42    kafka := kafka.NewKafka()43    kafka.RegisterNewSchema("topic", "schema")44}45func main() {46    kafka := kafka.NewKafka()47    kafka.RegisterNewSchema("topic", "schema")48}

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