Places in code with 6 or more lines that are exactly the same.
Intro
- For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
- Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
- You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.
- To learn more about duplications and techniques for eliminating duplication, Sokrates recommends the following resources:
- Avoid Repetition, MartinFlower.com (IEEE Software article)
- Refactoring duplicated code, sourcemaking.com
- Beck Design Rules, MartinFowler.com
- DRY (Don't Repeat Yourself) Principle, Wikipedia
- The Cut-and-Paste Programming Software Development Anti-Pattern, sourcemaking.com
- Code Smells / Duplicated Code, Jeff Atwood, codinghorror.com:
- "Duplicated code is the bane of software development. Stamp out duplication whenever possible. You should always be on the lookout for more subtle cases of near-duplication, too. Don't Repeat Yourself!"
- Reducing Coupling, MartinFlower.com (IEEE Software article):
- "There are several ways to describe coupling, but it boils down to this: If changing one module in a program requires changing another module, then coupling exists. ... Duplication always implies coupling, because changing one piece of duplicate code implies changing the other."
Duplication Overall
- 62% duplication:
- 1,948 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 1,214 duplicated lines
- 47 duplicates
Duplication per Extension
Duplication per Component (primary)
Duplication Between Components (50+ lines)
Open 3D force graph...
Show more details on duplication between components...
From Component
--> To Component
Duplicated
Lines
File Pairs
Details
java-operator/src/main/java/com/amazonwebservices/blogs/containers/sigv4 (100%)
--> lambda-client/src/main/java/com/amazonwebservices/blogs/containers/sigv4 (100%)
508
4 file pairs
details...
java-operator/src/main/java/com/amazonwebservices/blogs/containers/kubernetes (47%)
--> lambda-client/src/main/java/com/amazonwebservices/blogs/containers/kubernetes (91%)
426
9 file pairs
details...
java-operator/src/main/java/io/kubernetes/client/util (100%)
--> lambda-client/src/main/java/io/kubernetes/client/util (100%)
190
2 file pairs
details...
java-operator/src/main/java/com/amazonwebservices/blogs/containers/config (37%)
--> lambda-client/src/main/java/com/amazonwebservices/blogs/containers/config (100%)
58
2 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| java-operator/src/main/java/com/amazonwebservices/blogs/containers/sigv4 (100%) --> lambda-client/src/main/java/com/amazonwebservices/blogs/containers/sigv4 (100%) |
508 | 4 file pairs | details... |
| java-operator/src/main/java/com/amazonwebservices/blogs/containers/kubernetes (47%) --> lambda-client/src/main/java/com/amazonwebservices/blogs/containers/kubernetes (91%) |
426 | 9 file pairs | details... |
| java-operator/src/main/java/io/kubernetes/client/util (100%) --> lambda-client/src/main/java/io/kubernetes/client/util (100%) |
190 | 2 file pairs | details... |
| java-operator/src/main/java/com/amazonwebservices/blogs/containers/config (37%) --> lambda-client/src/main/java/com/amazonwebservices/blogs/containers/config (100%) |
58 | 2 file pairs | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 118 | x 2 | java-operator/src/main/j.../blogs/containers/sigv4lambda-client/src/main/j.../blogs/containers/sigv4 |  AWS4SignerBase.javaAWS4SignerBase.java |
25:245 (100%)25:245 (100%) | view |
| 87 | x 2 | java-operator/src/main/j.../kubernetes/client/utillambda-client/src/main/j.../kubernetes/client/util | CustomAuthentication.javaCustomAuthentication.java |
37:153 (100%)35:151 (100%) | view |
| 86 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObjectList.javaIamUserGroupCustomObjectList.java |
12:141 (100%)12:142 (100%) | view |
| 81 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObject.javaIamUserGroupCustomObject.java |
10:130 (100%)10:130 (100%) | view |
| 62 | x 2 | java-operator/src/main/j...s/containers/sigv4/utillambda-client/src/main/j...s/containers/sigv4/util | HttpUtils.javaHttpUtils.java |
19:106 (100%)20:107 (100%) | view |
| 53 | x 2 | java-operator/src/main/j.../blogs/containers/sigv4lambda-client/src/main/j.../blogs/containers/sigv4 | AWS4SignerForAuthorizationHeader.javaAWS4SignerForAuthorizationHeader.java |
16:117 (100%)18:119 (100%) | view |
| 21 | x 2 | java-operator/src/main/j...s/containers/sigv4/utillambda-client/src/main/j...s/containers/sigv4/util | BinaryUtils.javaBinaryUtils.java |
8:51 (100%)8:51 (100%) | view |
| 17 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObjectSpec.javaIamUserGroupCustomObjectSpec.java |
56:86 (26%)64:94 (25%) | view |
| 16 | x 2 | java-operator/src/main/j...blogs/containers/configlambda-client/src/main/j...blogs/containers/config | AWSConfig.javaAWSConfig.java |
3:27 (100%)3:27 (100%) | view |
| 15 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObjectSpec.javaIamUserGroupCustomObjectSpec.java |
12:34 (23%)11:33 (22%) | view |
| 14 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObjectSpec.javaIamUserGroupCustomObjectSpec.java |
97:115 (21%)102:120 (21%) | view |
| 13 | x 2 | java-operator/src/main/j...blogs/containers/configlambda-client/src/main/j...blogs/containers/config | EKSConfig.javaEKSConfig.java |
3:22 (100%)3:22 (100%) | view |
| 10 | x 2 | java-operator/src/main/j...ainers/kubernetes/modeljava-operator/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObject.javaIamUserGroupCustomObjectList.java |
46:59 (12%)71:84 (11%) | view |
| 10 | x 2 | lambda-client/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObject.javaIamUserGroupCustomObjectList.java |
29:42 (12%)31:44 (11%) | view |
| 10 | x 2 | lambda-client/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObject.javaIamUserGroupCustomObjectList.java |
46:59 (12%)71:84 (11%) | view |
| 10 | x 2 | ROOTROOT |  rbac-developers.yamlrbac-developers.yaml |
7:16 (15%)42:51 (15%) | view |
| 10 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObject.javaIamUserGroupCustomObjectList.java |
29:42 (12%)31:44 (11%) | view |
| 10 | x 2 | java-operator/src/main/j...ainers/kubernetes/modeljava-operator/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObject.javaIamUserGroupCustomObjectList.java |
29:42 (12%)31:44 (11%) | view |
| 10 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObjectList.javaIamUserGroupCustomObject.java |
31:44 (11%)29:42 (12%) | view |
| 10 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObjectList.javaIamUserGroupCustomObject.java |
71:84 (11%)46:59 (12%) | view |
Duplicated Units
The list of top 20 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 52 | x 2 | java-operator/src/main/j.../kubernetes/client/utillambda-client/src/main/j.../kubernetes/client/util | CustomAuthentication.javaCustomAuthentication.java |
86:154 84:152 | view |
| 49 | x 2 | java-operator/src/main/j.../blogs/containers/sigv4lambda-client/src/main/j.../blogs/containers/sigv4 | AWS4SignerForAuthorizationHeader.javaAWS4SignerForAuthorizationHeader.java |
47:118 49:120 | view |
| 30 | x 2 | java-operator/src/main/j.../kubernetes/client/utillambda-client/src/main/j.../kubernetes/client/util | CustomAuthentication.javaCustomAuthentication.java |
50:84 48:82 | view |
| 24 | x 2 | java-operator/src/main/j.../blogs/containers/sigv4lambda-client/src/main/j.../blogs/containers/sigv4 | AWS4SignerBase.javaAWS4SignerBase.java |
172:200 172:200 | view |
| 24 | x 2 | java-operator/src/main/j...s/containers/sigv4/utillambda-client/src/main/j...s/containers/sigv4/util | HttpUtils.javaHttpUtils.java |
44:70 45:71 | view |
| 20 | x 2 | java-operator/src/main/j...s/containers/sigv4/utillambda-client/src/main/j...s/containers/sigv4/util | HttpUtils.javaHttpUtils.java |
72:94 73:95 | view |
| 16 | x 2 | java-operator/src/main/j...s/containers/sigv4/utillambda-client/src/main/j...s/containers/sigv4/util | HttpUtils.javaHttpUtils.java |
26:42 27:43 | view |
| 14 | x 2 | java-operator/src/main/j.../blogs/containers/sigv4lambda-client/src/main/j.../blogs/containers/sigv4 | AWS4SignerBase.javaAWS4SignerBase.java |
123:137 123:137 | view |
| 14 | x 2 | java-operator/src/main/j.../blogs/containers/sigv4lambda-client/src/main/j.../blogs/containers/sigv4 | AWS4SignerBase.javaAWS4SignerBase.java |
142:157 142:157 | view |
| 13 | x 2 | java-operator/src/main/j.../blogs/containers/sigv4lambda-client/src/main/j.../blogs/containers/sigv4 | AWS4SignerBase.javaAWS4SignerBase.java |
96:116 96:116 | view |
| 12 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObjectList.javaIamUserGroupCustomObjectList.java |
103:115 104:116 | view |
| 12 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObject.javaIamUserGroupCustomObject.java |
92:104 92:104 | view |
| 12 | x 2 | java-operator/src/main/j...s/containers/sigv4/utillambda-client/src/main/j...s/containers/sigv4/util | BinaryUtils.javaBinaryUtils.java |
18:32 18:32 | view |
| 11 | x 2 | java-operator/src/main/j...s/containers/sigv4/utillambda-client/src/main/j...s/containers/sigv4/util | HttpUtils.javaHttpUtils.java |
96:107 97:108 | view |
| 10 | x 2 | java-operator/src/main/j.../blogs/containers/sigv4lambda-client/src/main/j.../blogs/containers/sigv4 | AWS4SignerBase.javaAWS4SignerBase.java |
60:71 60:71 | view |
| 10 | x 2 | java-operator/src/main/j.../blogs/containers/sigv4lambda-client/src/main/j.../blogs/containers/sigv4 | AWS4SignerBase.javaAWS4SignerBase.java |
78:90 78:90 | view |
| 9 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObjectList.javaIamUserGroupCustomObjectList.java |
123:132 124:133 | view |
| 9 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObject.javaIamUserGroupCustomObject.java |
112:121 112:121 | view |
| 8 | x 2 | java-operator/src/main/j...ainers/kubernetes/modellambda-client/src/main/j...ainers/kubernetes/model | IamUserGroupCustomObjectSpec.javaIamUserGroupCustomObjectSpec.java |
101:109 106:114 | view |
| 7 | x 2 | java-operator/src/main/j.../blogs/containers/sigv4lambda-client/src/main/j.../blogs/containers/sigv4 | AWS4SignerBase.javaAWS4SignerBase.java |
202:209 202:209 | view |