View ByteBufferIOOps.scala
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package com.waitingforcode | |
import java.nio.ByteBuffer | |
import java.nio.channels.SocketChannel | |
import java.nio.charset.StandardCharsets | |
object ByteBufferIOOps { | |
def writeToChannel(channel: SocketChannel, textToWrite: String, buffer: ByteBuffer) = { | |
buffer.clear() | |
buffer.put(textToWrite.getBytes()) |
View docker-compose.yaml
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version: '3.1' | |
services: | |
webserver: | |
image: puckel/docker-airflow:1.9.0-3 | |
environment: | |
- LOAD_EX=n | |
volumes: | |
- ./assets/dags:/usr/local/airflow/dags | |
ports: | |
- "8080:8080" |
View CdcCommitLogReadHandler.java
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package com.waitingforcode.cassandra_cdc; | |
import org.apache.cassandra.config.ColumnDefinition; | |
import org.apache.cassandra.db.Clustering; | |
import org.apache.cassandra.db.Mutation; | |
import org.apache.cassandra.db.commitlog.CommitLogDescriptor; | |
import org.apache.cassandra.db.commitlog.CommitLogReadHandler; | |
import org.apache.cassandra.db.partitions.PartitionUpdate; | |
import org.apache.cassandra.db.rows.Cell; | |
import org.apache.cassandra.db.rows.Row; |
View Airflow external triggers
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curl -X POST http://localhost:8081/api/experimental/dags/hello_world_a/dag_runs -H 'Cache-Control: no-cache' -H 'Content-Type: application/json' -d '{"conf":"{\"task_payload\":\"payload1\"}"}' | |
curl -X POST http://localhost:8081/api/experimental/dags/hello_world_a/dag_runs -H 'Cache-Control: no-cache' -H 'Content-Type: application/json' -d '{"conf":"{\"task_payload\":\"payload2\"}"}' | |
curl -X POST http://localhost:8081/api/experimental/dags/hello_world_a/dag_runs -H 'Cache-Control: no-cache' -H 'Content-Type: application/json' -d '{"conf":"{\"task_payload\":\"payload3\"}"}' |
View ArrayElementsCastExample.scala
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case class ElementCaseClass(contrast_ratio: Double, error_text: String, error_x_position: Long, error_x_size: Long) | |
val dataset = Seq( | |
(Array( | |
ElementCaseClass(1.0d, "error1", 1L, 2L), | |
ElementCaseClass(2.0d, "error2", 100L, 101L), | |
ElementCaseClass(3.0d, "error3", 1000L, 1001L) | |
)) | |
).toDF("elements") |
View CassandraSession.java
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package com.waitingforcode; | |
import com.datastax.driver.core.Cluster; | |
import com.datastax.driver.core.Session; | |
import java.util.ArrayList; | |
import java.util.List; | |
import java.util.stream.Collectors; |