释放双眼，带上耳机，听听看~！
这篇我来介绍一下之前，很早的时候介绍pipeline语法的时候，有一个指令叫when 和expression，当时由于pipeline知识学习太少，不好举例子去学习消化。到了这里，其实这两个关键字就是用来控制stage的执行，如果你条件有好几个，可以精确控制让哪一些stage执行，让哪一些stage不执行。
我这里举例一个自动化测试中的例子，例如我写了多个stage，这个pipeline脚本执行执行冒烟测试，和集成测试。有时候，我们希望快速执行冒烟测试，想根据结果看看，不一定一上来就执行集成测试。为了达到这种控制效果，我们就需要使用逻辑控制。在pipeline中就使用when 和expression两个命令。例如，如果json文件中冒烟测试变量为true，我就只执行冒烟测试的stage,其他和冒烟测试无关的stage我就不去执行。如果冒烟测试变量值为false，也就是默认要跑集成测试（不跑冒烟测试）。为了不搞得这么复杂，我们就分两个类型测试就好。下面，我用pipeline代码方式去实现。
1.json准备
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2 "NAME" : "Lucy",
3 "AGE" : "18",
4 "PHONE_NUMBER" : "13912345678",
5 "ADDRESS" : "Haidian Beijing",
6 "EMAIL" : "lucy@demo.com",
7 "GENDER" : "male",
8 "SMOKE": true,
9 "IS_MARRY" : false
10}
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我还是在前面文章的/tmp/anthony/test.json文件基础上加了一个变量 SMOKE， 默认值是true。
2.pipeline stage groovy文件代码
由于我添加了一个SMOKE的变量，所以在初始化stage，我们新增一行代码，初始化SMOKE的变量。
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4pipeline{
5
6 agent any
7 stages{
8 stage("Hello Pipeline") {
9 steps {
10 script {
11 println "Hello Pipeline!"
12 println env.JOB_NAME
13 println env.BUILD_NUMBER
14 }
15 }
16 }
17
18 stage("Init paramters in json") {
19 steps {
20 script {
21 println "read josn input file"
22 json_file = INPUT_JSON? INPUT_JSON.trim() : ""
23 prop = readJSON file : json_file
24 name = prop.NAME? prop.NAME.trim() : ""
25 println "Name:" + name
26 age = prop.AGE? prop.AGE.trim() : ""
27 println "Age:" + age
28 phone = prop.PHONE_NUMBER? prop.PHONE_NUMBER.trim() : ""
29 println "Phone:" + phone
30 address = prop.ADDRESS? prop.ADDRESS.trim() : ""
31 println "Address:" + address
32 email = prop.EMAIL? prop.EMAIL.trim() : ""
33 println "Email:" + email
34 gender = prop.GENDER? prop.GENDER.trim() : ""
35 println "Gender:" + gender
36 is_marry = prop.IS_MARRY? prop.IS_MARRY : false
37 println "is_marry:" + is_marry
38 is_smoke = prop.SMOKE? prop.SMOKE : false
39 println "is_smoke:" + is_smoke
40 }
41 }
42 }
43 stage("call a method") {
44 steps {
45 script {
46 println "send the parameter as map type"
47 model_call = load env.WORKSPACE + "/groovy/projectA-model.groovy"
48 model_call.getUserInfo(name:name, age:age, phone:phone, address:address, email:email, gender:gender, is_marry:is_marry)
49 }
50 }
51 }
52 stage("check serive up") {
53 when {
54 expression {
55 return (is_smoke == true)
56 }
57 }
58 steps {
59 script {
60 println "SMOKE TEST: check service startup"
61 }
62 }
63 }
64 stage("check UI login") {
65 when {
66 expression {
67 return (is_smoke == true)
68 }
69 }
70 steps {
71 script {
72 println "SMOKE TEST: check UI login success"
73 }
74 }
75 }
76
77 stage("Integrate-ModelA") {
78 when {
79 expression {
80 return (is_smoke == false)
81 }
82 }
83 steps {
84 script {
85 println "Integrate-ModelA"
86 }
87 }
88 }
89
90 stage("Integrate-ModelB") {
91 when {
92 expression {
93 return (is_smoke == false)
94 }
95 }
96 steps {
97 script {
98 println "Integrate-ModelB"
99 }
100 }
101 }
102 }
103
104}
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3.测试效果
只跑冒烟测试，也就是SMOKE的值在json中是true
我这里直接贴出运行日志
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2Rebuilds build #9
3Rebuilds build #15
4Rebuilds build #16
5Rebuilds build #17
6Obtained src/Jenkinsfile/projectA-stages.groovy from git https://github.com/Anthonyliu86/pipeline-skills-demo.git
7Running in Durability level: MAX_SURVIVABILITY
8[Pipeline] Start of Pipeline
9[Pipeline] node
10Running on Jenkins in /var/lib/jenkins/workspace/ProjectA-pipeline-demo
11[Pipeline] {
12[Pipeline] stage
13[Pipeline] { (Declarative: Checkout SCM)
14[Pipeline] checkout
15using credential 03214975-2168-4795-981a-ddd935f62a76
16 > git rev-parse --is-inside-work-tree # timeout=10
17Fetching changes from the remote Git repository
18 > git config remote.origin.url https://github.com/Anthonyliu86/pipeline-skills-demo.git # timeout=10
19Fetching upstream changes from https://github.com/Anthonyliu86/pipeline-skills-demo.git
20 > git --version # timeout=10
21using GIT_ASKPASS to set credentials
22 > git fetch --tags --progress https://github.com/Anthonyliu86/pipeline-skills-demo.git +refs/heads/*:refs/remotes/origin/*
23 > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
24 > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
25Checking out Revision 35f0fbe78b205b5e0cdbf94444722411a7ebdb62 (refs/remotes/origin/master)
26 > git config core.sparsecheckout # timeout=10
27 > git checkout -f 35f0fbe78b205b5e0cdbf94444722411a7ebdb62
28Commit message: "fix"
29 > git rev-list --no-walk ff9cbf42c55cb87c863bb6b96d511ccc496eff80 # timeout=10
30[Pipeline] }
31[Pipeline] // stage
32[Pipeline] withEnv
33[Pipeline] {
34[Pipeline] stage
35[Pipeline] { (Hello Pipeline)
36[Pipeline] script
37[Pipeline] {
38[Pipeline] echo
39Hello Pipeline!
40[Pipeline] echo
41ProjectA-pipeline-demo
42[Pipeline] echo
4318
44[Pipeline] }
45[Pipeline] // script
46[Pipeline] }
47[Pipeline] // stage
48[Pipeline] stage
49[Pipeline] { (Init paramters in json)
50[Pipeline] script
51[Pipeline] {
52[Pipeline] echo
53read josn input file
54[Pipeline] readJSON
55[Pipeline] echo
56Name:Lucy
57[Pipeline] echo
58Age:18
59[Pipeline] echo
60Phone:13912345678
61[Pipeline] echo
62Address:Haidian Beijing
63[Pipeline] echo
64Email:lucy@demo.com
65[Pipeline] echo
66Gender:male
67[Pipeline] echo
68is_marry:false
69[Pipeline] echo
70is_smoke:true
71[Pipeline] }
72[Pipeline] // script
73[Pipeline] }
74[Pipeline] // stage
75[Pipeline] stage
76[Pipeline] { (call a method)
77[Pipeline] script
78[Pipeline] {
79[Pipeline] echo
80send the parameter as map type
81[Pipeline] load
82[Pipeline] { (/var/lib/jenkins/workspace/ProjectA-pipeline-demo/groovy/projectA-model.groovy)
83[Pipeline] }
84[Pipeline] // load
85[Pipeline] echo
86
87 Lucy come from Haidian Beijing, he is 18 old. he's phone number is
88 13912345678, or you can contact he via lucy@demo.com, he is not marry yet.
89
90[Pipeline] }
91[Pipeline] // script
92[Pipeline] }
93[Pipeline] // stage
94[Pipeline] stage
95[Pipeline] { (check serive up)
96[Pipeline] script
97[Pipeline] {
98[Pipeline] echo
99SMOKE TEST: check service startup
100[Pipeline] }
101[Pipeline] // script
102[Pipeline] }
103[Pipeline] // stage
104[Pipeline] stage
105[Pipeline] { (check UI login)
106[Pipeline] script
107[Pipeline] {
108[Pipeline] echo
109SMOKE TEST: check UI login success
110[Pipeline] }
111[Pipeline] // script
112[Pipeline] }
113[Pipeline] // stage
114[Pipeline] stage
115[Pipeline] { (Integrate-ModelA)
116Stage "Integrate-ModelA" skipped due to when conditional
117[Pipeline] }
118[Pipeline] // stage
119[Pipeline] stage
120[Pipeline] { (Integrate-ModelB)
121Stage "Integrate-ModelB" skipped due to when conditional
122[Pipeline] }
123[Pipeline] // stage
124[Pipeline] }
125[Pipeline] // withEnv
126[Pipeline] }
127[Pipeline] // node
128[Pipeline] End of Pipeline
129Finished: SUCCESS
130
只跑集成测试，先去test.json把SMOKE的值改成false
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2Rebuilds build #9
3Rebuilds build #15
4Rebuilds build #16
5Rebuilds build #17
6Obtained src/Jenkinsfile/projectA-stages.groovy from git https://github.com/Anthonyliu86/pipeline-skills-demo.git
7Running in Durability level: MAX_SURVIVABILITY
8[Pipeline] Start of Pipeline
9[Pipeline] node
10Running on Jenkins in /var/lib/jenkins/workspace/ProjectA-pipeline-demo
11[Pipeline] {
12[Pipeline] stage
13[Pipeline] { (Declarative: Checkout SCM)
14[Pipeline] checkout
15using credential 03214975-2168-4795-981a-ddd935f62a76
16 > git rev-parse --is-inside-work-tree # timeout=10
17Fetching changes from the remote Git repository
18 > git config remote.origin.url https://github.com/Anthonyliu86/pipeline-skills-demo.git # timeout=10
19Fetching upstream changes from https://github.com/Anthonyliu86/pipeline-skills-demo.git
20 > git --version # timeout=10
21using GIT_ASKPASS to set credentials
22 > git fetch --tags --progress https://github.com/Anthonyliu86/pipeline-skills-demo.git +refs/heads/*:refs/remotes/origin/*
23 > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
24 > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
25Checking out Revision 35f0fbe78b205b5e0cdbf94444722411a7ebdb62 (refs/remotes/origin/master)
26 > git config core.sparsecheckout # timeout=10
27 > git checkout -f 35f0fbe78b205b5e0cdbf94444722411a7ebdb62
28Commit message: "fix"
29 > git rev-list --no-walk ff9cbf42c55cb87c863bb6b96d511ccc496eff80 # timeout=10
30[Pipeline] }
31[Pipeline] // stage
32[Pipeline] withEnv
33[Pipeline] {
34[Pipeline] stage
35[Pipeline] { (Hello Pipeline)
36[Pipeline] script
37[Pipeline] {
38[Pipeline] echo
39Hello Pipeline!
40[Pipeline] echo
41ProjectA-pipeline-demo
42[Pipeline] echo
4318
44[Pipeline] }
45[Pipeline] // script
46[Pipeline] }
47[Pipeline] // stage
48[Pipeline] stage
49[Pipeline] { (Init paramters in json)
50[Pipeline] script
51[Pipeline] {
52[Pipeline] echo
53read josn input file
54[Pipeline] readJSON
55[Pipeline] echo
56Name:Lucy
57[Pipeline] echo
58Age:18
59[Pipeline] echo
60Phone:13912345678
61[Pipeline] echo
62Address:Haidian Beijing
63[Pipeline] echo
64Email:lucy@demo.com
65[Pipeline] echo
66Gender:male
67[Pipeline] echo
68is_marry:false
69[Pipeline] echo
70is_smoke:true
71[Pipeline] }
72[Pipeline] // script
73[Pipeline] }
74[Pipeline] // stage
75[Pipeline] stage
76[Pipeline] { (call a method)
77[Pipeline] script
78[Pipeline] {
79[Pipeline] echo
80send the parameter as map type
81[Pipeline] load
82[Pipeline] { (/var/lib/jenkins/workspace/ProjectA-pipeline-demo/groovy/projectA-model.groovy)
83[Pipeline] }
84[Pipeline] // load
85[Pipeline] echo
86
87 Lucy come from Haidian Beijing, he is 18 old. he's phone number is
88 13912345678, or you can contact he via lucy@demo.com, he is not marry yet.
89
90[Pipeline] }
91[Pipeline] // script
92[Pipeline] }
93[Pipeline] // stage
94[Pipeline] stage
95[Pipeline] { (check serive up)
96[Pipeline] script
97[Pipeline] {
98[Pipeline] echo
99SMOKE TEST: check service startup
100[Pipeline] }
101[Pipeline] // script
102[Pipeline] }
103[Pipeline] // stage
104[Pipeline] stage
105[Pipeline] { (check UI login)
106[Pipeline] script
107[Pipeline] {
108[Pipeline] echo
109SMOKE TEST: check UI login success
110[Pipeline] }
111[Pipeline] // script
112[Pipeline] }
113[Pipeline] // stage
114[Pipeline] stage
115[Pipeline] { (Integrate-ModelA)
116Stage "Integrate-ModelA" skipped due to when conditional
117[Pipeline] }
118[Pipeline] // stage
119[Pipeline] stage
120[Pipeline] { (Integrate-ModelB)
121Stage "Integrate-ModelB" skipped due to when conditional
122[Pipeline] }
123[Pipeline] // stage
124[Pipeline] }
125[Pipeline] // withEnv
126[Pipeline] }
127[Pipeline] // node
128[Pipeline] End of Pipeline
129Finished: SUCCESS
130
131
再看看stage view的图片效果
其实，如果你还可以利用第二个参数，写在expression中，来控制当什么条件符合的时候，执行全部的冒烟加上集成测试，这样的效果都是可以实现的。
json文件如下
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2 "NAME" : "Lucy",
3 "AGE" : "18",
4 "PHONE_NUMBER" : "13912345678",
5 "ADDRESS" : "Haidian Beijing",
6 "EMAIL" : "lucy@demo.com",
7 "GENDER" : "male",
8 "SMOKE": false,
9 "FULL_TEST":true,
10 "IS_MARRY" : false
11}
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13
stage 代码修改如下
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4pipeline{
5
6 agent any
7 stages{
8 stage("Hello Pipeline") {
9 steps {
10 script {
11 println "Hello Pipeline!"
12 println env.JOB_NAME
13 println env.BUILD_NUMBER
14 }
15 }
16 }
17
18 stage("Init paramters in json") {
19 steps {
20 script {
21 println "read josn input file"
22 json_file = INPUT_JSON? INPUT_JSON.trim() : ""
23 prop = readJSON file : json_file
24 name = prop.NAME? prop.NAME.trim() : ""
25 println "Name:" + name
26 age = prop.AGE? prop.AGE.trim() : ""
27 println "Age:" + age
28 phone = prop.PHONE_NUMBER? prop.PHONE_NUMBER.trim() : ""
29 println "Phone:" + phone
30 address = prop.ADDRESS? prop.ADDRESS.trim() : ""
31 println "Address:" + address
32 email = prop.EMAIL? prop.EMAIL.trim() : ""
33 println "Email:" + email
34 gender = prop.GENDER? prop.GENDER.trim() : ""
35 println "Gender:" + gender
36 is_marry = prop.IS_MARRY? prop.IS_MARRY : false
37 println "is_marry:" + is_marry
38 is_smoke = prop.SMOKE? prop.SMOKE : false
39 println "is_smoke:" + is_smoke
40 full_test = prop.FULL_TEST? prop.FULL_TEST : false
41 }
42 }
43 }
44 stage("call a method") {
45 steps {
46 script {
47 println "send the parameter as map type"
48 model_call = load env.WORKSPACE + "/groovy/projectA-model.groovy"
49 model_call.getUserInfo(name:name, age:age, phone:phone, address:address, email:email, gender:gender, is_marry:is_marry)
50 }
51 }
52 }
53 stage("check serive up") {
54 when {
55 expression {
56 return (is_smoke == true || full_test == true)
57 }
58 }
59 steps {
60 script {
61 println "SMOKE TEST: check service startup"
62 }
63 }
64 }
65 stage("check UI login") {
66 when {
67 expression {
68 return (is_smoke == true || full_test == true)
69 }
70 }
71 steps {
72 script {
73 println "SMOKE TEST: check UI login success"
74 }
75 }
76 }
77
78 stage("Integrate-ModelA") {
79 when {
80 expression {
81 return (is_smoke == false || full_test == true)
82 }
83 }
84 steps {
85 script {
86 println "Integrate-ModelA"
87 }
88 }
89 }
90
91 stage("Integrate-ModelB") {
92 when {
93 expression {
94 return (is_smoke == false || full_test == true)
95 }
96 }
97 steps {
98 script {
99 println "Integrate-ModelB"
100 }
101 }
102 }
103 }
104
105}
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108
测试结果
