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Read more on this feature in the order and job chain documentation.
Job Chain Patterns
Forward Dependency Patterns
Job chains represent a sequence of jobs that implements forward dependency.
Job chain with single end nodes for success and failure
- The jobs within the job chain will result in a unique successful end state or otherwise will use the same end state for failure.
- Each job would immediately cause the job chain to be completed in case of error.
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| Flowchart |
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Job1 [label="Job 1",fillcolor="lightskyblue"] Job1_successful [shape=diamond,label="execution successful?",fillcolor="white"] Job2 [label="Job 2",fillcolor="lightskyblue"] Job2_successful [shape=diamond,label="execution successful?",fillcolor="white"] Job3 [label="Job 3",fillcolor="lightskyblue"] Job3_successful [shape=diamond,label="execution successful?",fillcolor="white"] EndStateSuccess [label="End state: success",fillcolor="palegreen"] EndStateError [label="End state: error",fillcolor="lightcoral"] Job1 -> Job1_successful Job1_successful -> Job2 [label=" yes "] Job1_successful -> EndStateError [label=" no "] Job2 -> Job2_successful Job2_successful -> Job3 [label=" yes "] Job2_successful -> EndStateError [label=" no "] Job3 -> Job3_successful Job3_successful -> EndStateSuccess [label=" yes "] Job3_successful -> EndStateError [label=" no "] |
Job chain with multiple end nodes for success and failure
- The jobs will use a common end state in case of success and individual end states for failure
- Each job would immediately cause the job chain to be completed in case of error.
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| Flowchart |
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Job1 [label="Job 1",fillcolor="lightskyblue"] Job1_successful [shape=diamond,label="execution successful?",fillcolor="white"] Job2 [label="Job 2",fillcolor="lightskyblue"] Job2_successful [shape=diamond,label="execution successful?",fillcolor="white"] Job3 [label="Job 3",fillcolor="lightskyblue"] Job3_successful [shape=diamond,label="execution successful?",fillcolor="white"] EndStateSuccess [label="End state: success",fillcolor="palegreen"] EndStateError1 [label="End state: error 1",fillcolor="lightcoral"] EndStateError2 [label="End state: error 2",fillcolor="lightcoral"] EndStateError3 [label="End state: error 3",fillcolor="lightcoral"] Job1 -> Job1_successful Job1_successful -> Job2 [label=" yes "] Job1_successful -> EndStateError1 [label=" no "] Job2 -> Job2_successful Job2_successful -> Job3 [label="yes"] Job2_successful -> EndStateError2 [label=" no "] Job3 -> Job3_successful Job3_successful -> EndStateSuccess [label=" yes "] Job3_successful -> EndStateError3 [label=" no "] |
Job chain with individual successor nodes
- The jobs are organized in a way that in case of error a job node is skipped an processing is continued with a later job node.
- This sample represents the usage of a job for error handling of previous jobs.
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| Flowchart |
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Job1 [label="Job 1",fillcolor="lightskyblue"] Job1_successful [shape=diamond,label="execution successful?",fillcolor="white"] Job2 [label="Job 2",fillcolor="lightskyblue"] Job2_successful [shape=diamond,label="execution successful?",fillcolor="white"] Job3 [label="Job 3",fillcolor="lightskyblue"] Job3_successful [shape=diamond,label="execution successful?",fillcolor="white"] EndStateSuccess [label="End state: success",fillcolor="palegreen"] EndStateError [label="End state: error",fillcolor="lightcoral"] Job1 -> Job1_successful Job1_successful -> Job2 [label=" yes "] Job1_successful -> Job3 [label=" no \n continue with Job 3 "] Job2 -> Job2_successful Job2_successful -> Job3 [label=" yes "] Job2_successful -> EndStateError [label=" no "] Job3 -> Job3_successful Job3_successful -> EndStateSuccess [label=" yes "] Job3_successful -> EndStateError [label=" no "] |
Nested Job Chain Pattern
- Two Job Chains B and C are integrated into a Job Chain A for sequential processing.
- Job Chain A starts Job Chain B and waits for completion.
- Once Job Chain B has terminated then Job Chain A is continued and starts Job Chain C.
- After completion of Job Chain C the processing of Job Chain A is continued.
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| Flowchart |
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JobA1 [label="Job A1",fillcolor="lightskyblue"] JobA2 [label="Job A2",fillcolor="lightskyblue"] JobA3 [label="Job A3",fillcolor="lightskyblue"] JobB1 [label="Job B1",fillcolor="orange"] JobB2 [label="Job B2",fillcolor="orange"] JobB3 [label="Job B3",fillcolor="orange"] JobC1 [label="Job C1",fillcolor="lavender"] JobC2 [label="Job C2",fillcolor="lavender"] JobC3 [label="Job C3",fillcolor="lavender"] JobA1 -> JobB1 [label=" start job chain B "] JobA1 -> JobA2 [label=" skip job chain B "] JobB1 -> JobB2 -> JobB3 JobB3 -> JobA2 [label=" continue job chain A "] JobA2 -> JobC1 [label=" start job chain C "] JobA2 -> JobA3 [label=" skip job chain C "] JobC1 -> JobC2 -> JobC3 JobC3 -> JobA3 [label=" continue job chain A "] |
Split & Sync Job Chain Pattern
- Two Job Chains B and C are executed in parallel and are controlled by the initiating Job Chain A.
- The initiating Job Chain A splits execution into two Job Chains B and C.
- The execution of Job Chain B and C is synchronized and Job Chain A is continued.
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