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continuous deployment _
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27 \
Breno Barros ([email protected]/Twitter @brenoobarros):
é bacharel em Ciência da Computação. Atualmente é arquiteto de soluções da Stefanini IT Solutions, onde atua como líder do Centro de Excelência SOA e do Escritório de Arquitetura e !"#$#%&'()*%+&,#%%-*.$#&/)0"*1/234)%&/#5#6&78,9:&78 :&;<,:&87=>:&89>&8#?-"*#.&@)%*(.)0&
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Continuous deployment consiste em um conjunto de práticas para criar e automatizar um processo de entrega de releases de forma 0)A)"BC)?&)&/#.1DC)?+&E%%#&A#$)&%)0&-"*?*F2$#&/#5#&G#052&$)&0)$-F*0&o esforço e desperdícios para esta atividade, bem como acelerar as entregas para os usuários. Este artigo visa apresentar como adotar algumas dessas práticas para iniciar a cultura de continuous de-ployment em seu ambiente de trabalho.
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5,$!"M(!,%)'%*,+"(,&'%)'% .,+"'$2%#!+)#%'/%#/I!'+"'%)'%)'$'+:,&:!/'+",>
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"!,+%'%:!$#%)!$5,+!I!&!@4V&,$%'/%#/I!'+"'%)'%5(,) 01,%5#(#%"'+"#(%#+"'*!5#(%5(,I&'/#$%C '%+,(/#&/'+"'%,*,(-
Figura 1. Referência de Deployment Pipeline.
29 \
('/%$,/'+"'%+'$"'$%#/I!'+"'$>X4% ,% *,+"!+ , $% )'&!:'(;% )!.'('+*!#V$'% ),% *,+"!-
+ , $%)'5&,;/'+"% #5'+#$%5'&,% .#",%)'%+1,% *,&,*#(%,$%I!+4(!,$% )!('"#/'+"'% +,% #/I!'+"'% )'% 5(,) 01,>% Y#$%$!/2%)'!8#(%'$$'$%I!+4(!,$%$'/5('%)!$5,+E:'!$%5#(#%C '%#%4('#% $ 4(!#%, %)'%+'-M*!,%5,$$#/%)'%.,(/#%$!/5&'$%9'/%#5'+#$% /%*&!C '2%5,(%'8'/5&,<%)!$5,+!I!&!@#(%'$-$'$%I!+4(!,$%'/%5(,) 01,>%O %$'3#2%#,%!+:H$%)#%RZ%)'*!)!(%C #+),%,%+,:,%('&'#$'%'+"('%'/%5(,) 01,%9*,/,%,*,(-('%*,/%,%*,+"!+ , $%)'5&,;/'+"<2%H%#%4('#%)'%+'-M*!,%C '/%)'*!)'>
Primeiros Passos com Continuous Deployment
L#(#%!+!*!#(%#%#),01,%),%*,+"!+ , $%)'5&,;/'+"2%H%+'*'$$4(!,%#&- +$%5#$$,$%I4$!*,$Q
1. Estabeleça a cultura de automação e cobertu-ra de testes e garanta que ela seja mantida
N% *,I'(" (#% )'% "'$"'$% H% '$$'+*!#&% 5#(#% 6#I!&!"#(% ,%*,+"!+ , $%)'5&,;/'+"%5,(%) #$%(#@D'$%5(!+*!5#!$>%L(!-/'!(,2%'&#%5'(/!"'%/ )#(%,%*M)!-,%, %#)!*!,+#(%+,:#$%. +*!,+#&!)#)'$2% '+C #+",% -#(#+"!/,$% C '% ,$% *M)!-,$%#+"!-,$%+1,%.,(#/%C 'I(#),$%9"'$"'$%)'%('-('$$1,<2%)#+-
),% #% $'- (#+0#% "#+",% 5#(#% ,$% )'$'+:,&:'),('$% C #+",%5#(#%,$%$"#K'6,&)'($>%O%$'- +),%/,"!:,%H%C '%/!+!/!@#%#% +'*'$$!)#)'% )'% "'$"'$%/#+ #!$2% 5,!$% ,$%/'$/,$% )'-
5'+)'/%)#%)!$5,+!I!&!)#)'%)'%5(,=$$!,+#!$2%)'/#+)#/%/ !",%"'/5,%5#(#%('#&!@#01,%'%#!+)#%*,+"#/%*,/% /#%5(,I#I!&!)#)'%#&"#%)'%'((,$%, %)'$&!@'$%6 /#+,$2%-'(#+-
),%#$$!/%)'$5'()E*!,$%)'%"'/5,%'%(!$*,$%5#(#% /%5(,3'",%)'%$,."7#('>
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"!"E:'!$%5,(%5#("'%),$%"'$"#),('$2%5,(%'8'/5&,2%$,I(#+),%#$$!/%/#!$%"'/5,%5#(#%,$%/'$/,$%$'%)')!*#('/%#%"'$"'$%'85&,(#"M(!,$%, %/#!$%:,&"#),$%#,%+'-M*!,>
L#(#%!$",2%'8!$"'/%/ !"#$%.'((#/'+"#$%)'%!+"'-(#01,%*,+"E+ #2% *,/,% e )$,+2% X'+K!+$2% N5#*6'% F,+"!+ /2%F( !$'% F,+"(,&2% )'+"('% , "(#$2% C '% 5'(/!"'/% #% *,+=-
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2. Automatize a construção (build) da aplicação?$$#%#"!:!)#)'%H%$'/%)W:!)#%#%#"!:!)#)'%C '%#%/#!,-
(!#%34%('#&!@#>%?+"('"#+",2%'&#%'$"4%#C !%5#(#%&'/I(#(%)'%$ #%!/5,("A+*!#>%O%5(,*'$$,%)'%*,+$"( 01,%)#%#5&!*#01,2%5#(#%,% *,+"!+ , $%)'5&,;/'+"2%+1,%)':'% '+:,&:'(%+'-
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/,$% .,*#(% +,% Y#:'+% a% 9:'3#% g'.'(J+*!#$<2% 5,!$% 5,$$ !% /#%$H(!'%)'%5& -V!+$%C '%.#*!&!"#/%#%#),01,%),%*,+"!-+ , $%)'5&,;/'+">
3. !"#$%&'()#*&+*,-%./0$&12#+*-*34!(3-*5-++6-vel
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B/#%I,#%$,& 01,%5#(#%"(#"#(%'$$#%C '$"1,%H%,%F,+$-"('"",>%O%F,+$"('"",%H% /%.(#/'7,(K%5#(#%#*'$$,%#%)!-:'($,$% ('* ($,$% )'% *,+=- (#01,2% "#!$% *,/,% #(C !:,$%5(,5'("!'$2%#(C !:,$%)'% !+!*!#&!@#01,%'%#"H%/'$/,% X#:#%h'#+$>%N%-(#+)'%:#+"#-'/%),%F,+$"('"",%H%#%5,$$!I!&!)#-
)'%)'%/#(*#(%9"#-$<%5#(#%*#)#%'&'/'+",%)'%*,+=- (#01,2%*,+.,(/'%'8'/5&,%)#%i!$"#-'/%^>%
Listagem 1.%F,+=- (#01,%),%F,+$"('"",%+,%Y#:'+%a>%
[development] continuous.deployment.db =
jdbc:derby:target/db;create=true
[test] continuous.deployment.db =
jdbc:mysql://testserver/db
[production] continuous.deployment.db =
jdbc: mysql://production-server/db
F,+.,(/'%5,)'%$'(%:!$",%+#%i!$"#-'/%̂ 2%5,)'/,$%"'(% /%W+!*,%+,/'%5#(#%,%'&'/'+",%, %:#(!4:'&%)'% *,+=-
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/para saber mais
!"#$%&'("*K"$!"+#,%-.!"/01$(2".#,#"03"!+.%4("-(5+#L"
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/para saber mais
/ 30
Listagem 2. !"#$%&'()*" +" !"#,-'.--" #" /(0.# 12
<dependencies> ... <dependency> <groupId>org.constretto</groupId> <artifactId>constretto6api</artifactId> <version>1.1</version> </dependency> <dependency> <groupId>org.constretto</groupId> <artifactId>constretto6core</artifactId> <version>1.1</version> <scope>runtime</scope> </dependency> ...</dependencies>
L#(#%'$"'%#("!-,2%#),"#/,$%#%*,+=- (#01,%),%F,+$-"('"",%:!#%,% .(#/'7,(K%j5(!+-2%*,+.,(/'%#%i!$"#-'/%k>%?+"('"#+",2%H%5,$$E:'&%*,+=- (#(%,%F,+$"('"",%'/%#5&!-*#0D'$%C '%+1,% "!&!@'/%,%.(#/'7,(K%j5(!+-%%9:'3#%g'-
.'(J+*!#$<>%
Listagem 3. !"#$%&'()*" +" !"#,-'.--" #" 34'5#% Framework.
<beans xmlns=http://www.springframework.org/sche-ma/beans
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instancexmlns:constretto=http://constretto.org/schema/con-strettoxsi:schemaLocation=”http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-2.5.xsdhttp://constretto.org/schema/constrettohttp://constretto.org/schema/constretto/constretto-1.2.xsd”> 67"#,-'.--"87"#$%&'(-5"#9 <constretto:stores> <constretto:properties-store> <constretto:resource locaion= :7;(,,4(-<84'"4.'-5.,=7"#$%24'"4.'-5.,>/> </constretto:properties-store> </constretto:stores> 6=7"#,-'.--"87"#$%&'(-5"#9</beans>
N-,(#2% *,/% #% #5&!*#01,% *,+=- (#)#% *,/% ,% F,+$-"('"",2%I#$"#%!+.,(/#(%5#(#%#%XbY%C #!$%"#-$%)':'(1,%$'(% "!&!@#)#$2%*,+.,(/'%i!$"#-'/%l>%`,%+,$$,%'8'/5&,%$!/-
5&'$2% "!&!@#/,$%#5'+#$% /#%W+!*#%"#->%F#$,%"'+6#/,$%/#!$%"#-$2%I#$"#%#*('$*'+"4V&#$%$'5#(#+),V#$%5,(%:E(- -
&#$>%
Listagem 4. Informando a JVM quais tags deverão ser utilizadas.
export CONSTRETTO_TAGS=development
ou
export CONSTRETTO_TAGS=development,<outras tags, caso existe>
4. Automatize o processo de migração de ban-co de dados
Y#!$%)!.E*!&%C '%#%"#('.#%)'%5('5#(#(% /%('&'#$'%)'%$,."7#('% 5#(#% )!:'($,$% #/I!'+"'$2% *,/% '8"'(+#&!@#01,%)'%*,+=- (#0D'$2%H%#%"#('.#%)'%/!-(#01,%)'%I#+*,%)'%)#-
),$%'/% $,%5'&#%#5&!*#01,%5#(#%:4(!,$%#/I!'+"'$>%O+)'2%"(#"#(%#$%)!:'($#$%:'($D'$%),$%$*6'/#$%'+"('%#$%I#$'$%)'%)#),$% )'% )'$'+:,&:!/'+",2% 6,/,&,-#01,% '% 5(,) 01,%#"(#:H$%)'%jmi%$*(!5"$%'8!-'%/ !",%* !)#),%5#(#%+1,%6#-
:'(%'((,$%6 /#+,$2%#&H/%)'%*,+$ /!(%/ !",%"'/5,%+,%*!*&,% )'% )'$'+:,&:!/'+",% )'% $,."7#('>% ?% !$",% )':'% $'(%# ",/#"!@#),>
m '/% 34% +1,% .'@% #$% $'- !+"'$% 5'(- +"#$Q% Sm #&% ,%$"#" $%),%I#+*,%)'%)#),$%+'$$#%/4C !+#]%m #&%,%$*6'-
/#%)'%)#),$%/#!$%#" #&%5#(#%#" #&!@#(%'$$#%!+$"A+*!#%),%I#+*,%)'%)#),$]T2% '/% /%5(,3'",%)'%)'$'+:,&:!/'+",%)'%$,."7#(']
L#(#% $#+#(% '$"#% )!=* &)#)'2% '8!$"'/% :4(!#$% .'((#-
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h#"!$2%Y!-(#"'lX2%)'+"('%, "(#$>%L,(H/2%5#(#%'$"'%#("!-,2%.,*#('/,$%+,%n&;7#;>%O%n&;7#;%*,+$!$"'%'/%.(#/'7,(K%4-!&%5#(#%/!-(#01,%)'%I#$'%)'%)#),$2%*,/%:'($!,+#/'+-
",2%&!/5'@#%'%/!-(#0D'$%)'%$*6'/#$%# ",/4"!*,$2%(45!-)#%5(':'+01,%)'%!+*,+$!$"J+*!#%5#(#%+1,%5'(/!"!(%C '%#%#5&!*#01,%!+!*!'%*,/%5(,I&'/#$2% !+"'-(#01,%*,/%,%Y#-
:'+%a2%)'+"('%, "(#$%9:'3#%g'.'(J+*!#$<>O%n&;7#;%. +*!,+#%5#(#%,$%$*6'/#$%)'%I#+*,%)'%)#-
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"(,&'%)'%:'($D'$%9$:+2%*:$2%-!"2%)'+"('%, "(,$<%. +*!,+#/%5#(#%,$%*M)!-,$V.,+"'$>%h#$!*#/'+"'2%'&'%*(!#%+#%!+$"A+-
*!#%),%I#+*,%)'%)#),$% #&:,% /#% "#I'&#%)'%/'"#)#),$2%)'+,/!+#)#% jFe?YNob?gjZO`2% C '% $'(4% $#)#% 5#(#%(#$"('#(%,%'$"#),%),%$*6'/#%)'%)#),$>%N%'$"( " (#%)#%"#-
I'&#%)'%/'"#)#),$%5,(%$'(%:!$"#%+#%=- (#%a>P (#+"'%,%I !&)2%,%n&;7#;%!(4%$*#+'#(%,$%*&#$$5#"6%
)#% #5&!*#01,% '/% I $*#% )'% !+$"( 0D'$% )'%/!-(#01,% 9, %/!-(#"!,+$<>%N,%&,*#&!@#(%'$$#$%!+$"( 0D'$%)'%/!-(#01,2%,%n&;7#;%!(4%*,+.(,+"4V&#$%*,/%#%"#I'&#%)'%/'"#)#),$>%F#$,%#%:'($1,%)#$%!+$"( 0D'$%)'%/!-(#01,%$'3#%/'+,(%, %!- #&% \$% )#% "#I'&#% )'%/'"#)#),$2% #$%/'$/#$% $'(1,% !--
+,(#)#$>%F#$,%*,+"(4(!,2%#$%!+$"( 0D'$%)'%/!-(#01,%$1,%'8'* "#)#$%5#(#%,%$*6'/#%)'%)#),$V#&:,%'%#%:'($1,%)#%"#I'&#%)'%/'"#)#),$%H%!+*('/'+"#)#>
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31 \
!"#$%&'(&)*+!,#$%&-.(/,!,&/%!&'%*.&"0'(!.1%!(.23
Listagem 5. Exemplo de instrução de migração em classes java com Spring JDBC Suporte.
import !"#$%""%&'!"('$)*+,*$!"-'$#.%-,/."0$1,2,$
JavaMigration;import org.springframework.jdbc.core.JdbcTemplate;
public class V1_2__Another_user implements JavaMigration {
protected void migrate(JdbcTemplate jdbcTemplate) throws Exception { jdbcTemplate.execute(“INSERT INTO user (name) VALUES (‘brenobarros’)”); }}
4%&1,.%&'(& *0. !"#5(.&'(&)*+!,#$%&()&6789&'(:(-
)%.&1!*,!&.1!*/ .&;"(&/%'()&!(,<*=,!&)"',0#,.&>>8&, ?&)"',0#,.&'(&','%.3&@. (.&.1!*/ .&678&'(:()&.(!&%!+,0*-=,'%.&0%&/!%A( %&()&")&'*!( B!*%CD,.(9&1%0E%!)(&F+"!,&G3&H&/,'!$%&'(&0%)(01<, "!,&'(:(&.(!I&J!(FK%&L9&),*.&,&:(!.$%&',&*0. !"#$%&'(&)*+!,#$%9&,&'(.1!*#$%&-.(/,!,',&/%!&'%*.&"0'(!.1%!(.2&(&%&."FK%&3.;<3
Figura 3. Organização das instruções de migração SQL.
>(. ,& E%!),9& ,& +!,0'(& :,0 ,+()& ()& *0 (+!,!& ,&,/<*1,#$%&1%)&%& E!,)(M%!N&O<PM,P&?&;"(&%&)(.)%&*!Q&+,!,0 *!&;"(&,&,/<*1,#$%&(&%&.1R(),&'(&D,01%&'(&','%.&
(. ,!$%& .()/!(& 1%)/, S:(*.9& .()& *0 (!:(0#5(.& ),0"-
,*.3&H"&.(A,9&%&O<PM,P9&'"!,0 (&%&'(/<%P&',&,/<*1,#$%9&*!Q&1R(1,!&,&:(!.$%&'%&.1R(),&'%&D,01%&'(&','%.&(&,/<*1,!&," %), *1,)(0 (& ,.& )*+!,#5(.& 0(1(..Q!*,.& ,0 (.& ',&,/<*1,#$%&*0*1*,!3
T.& 8*. ,+(0.& U& (& V& )%. !,)& 1%)%& 1%0F+"!,!& %&O<PM,P&0%&W,:(0&X3
Listagem 6. 3"04%5-,67" (, ('8'0(90!., :&*+,* 0"
arquivo pom.xml.
<dependency> <groupId>!"#$%""%&'!"('$)*+,*</groupId> <artifactId>)*+,*;!"-'</artifactId> <version>1.4.2</version></dependency>
Listagem 7$ 3"04%5-,67" (" 8&5%;.0 :&*+,* 0" <,2'0
2.
<plugin> <groupId>!"#$%""%&'!"('$)*+,*</groupId> <artifactId>)*+,*;#,2'0;8&5%.0</artifactId> <version>1.4.2</version> =!"04%5-,/."0>
.... =?!"04%5-,/."0>
</plugin>
>(:()%.&+,!,0 *!&;"(&%&.(..*%0O,1 %!P&.(A,&(K(1"-
,'%&,/B.&%&O<PM,P9&/,!,&+,!,0 *!&,&1%)/, *D*<*','(&(0-
!(&,&,/<*1,#$%&(&%&.1R(),&'(&D,01%&'(&','%.3&Y%0E%!)(&8*. ,+()&Z3
Listagem 8. 3"04%5-,67" (" 8&5%;.0 :&*+,* 0" <,2'0
2.
<bean id=@)*+,*@ class=@!"#$%""%&'!"('$)*+,*$!"-'$:&*+,*@ init-method=”migrate”> <property name=”dataSource” ref=”...”/> ...</bean>
<bean id=”sessionFactory” class=”...” depends-on=@)*+,*@> ...</bean>
Figura 2. Estrutura da tabela de metadados.
/ 32
J%!&/!(:(0#$%9& 1,.%& ,<+")&/!%D<(),&%1%!!,& '"!,0 (& ,&)*+!,#$%&/,!,&,&0%:,&:(!.$%&'%&.1R(),&'(&','%.9&?&!(1%-
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/*,9&%"&.0,/.R% 9&'%&.1R(),&,0 (!*%!&.(A,&1!*,'%3&J%*.&0,&/!Q *1,9&.1!*/ .&'(&'%M0+!,'(&;"(&(0:%<:()&,#5(.&'(.-
!" *:,.&- ,*.&1%)%&'!%/9&'(<( (9& !"01, (9&'(0 !(&%" !%.2&,1,D,)&0$%&, (0'(0'%&/%!&1%)/<( %9&!(."< ,0'%&0,&!(.-
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5. Implante automaticamente no ambiente-alvo[)/<,0 ,!&"),&,/<*1,#$%&0%& .(!:*'%!& '(& ,/<*1,#$%&
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Listagem 9. 3"04%5-,67" (" 3,-%" 0" <,2'0 A 8,-, "
servidor Tomcat 6.
<build> ... <plugins> <plugin> <groupId>org.codehaus.cargo</groupId> <artifactId>cargo-maven2-plugin</artifactId> <version>1.0</version> =!"04%5-,/."0>
<container> <containerId>tomcat6x</containerId> <type>remote</type> </container> =!"04%5-,/."0>
<type>runtime</type> <properties> <cargo.remote.username> </cargo.remote.username> <cargo.remote.password> </cargo.remote.password> <cargo.tomcat.manager.url> </cargo.tomcat.manager.url> </properties> =?!"04%5-,/."0>
=?!"04%5-,/."0>
</plugin> </plugins></build>
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/0'#1(&2'(.'-$3&'4&25+!-*6'7.2'8+&'.'%.,-9*2&')*$+:
[O time responde] O processador do servidor chegou ao consumo de 100%.
/0' #1(&2' (.' -$3&' 4&25+!-*6' 7.2' 8+&' .' 42.)&%%*(.2'
33 \
);&5.+'*'&%%&').!%+3.:
[O time responde] Tinha um trecho de código com um loop !"! #$%
/0' #1(&2'(.' -$3&'4&25+!-*6'7.2'8+&'&%%&')<($5.' ,.$'&%)2$-.:
[O time responde] Isso é um mistério. [risos]
/0'#1(&2'(.'-$3&'4&25+!-*6'7.2'8+&'!=.').!%&5+$3.%'>&2$?)*2'&%%&'3$%-@2$.:
[O time responde] Porque não tinha teste automatizado para essa funcionalidade.
/0'#1(&2'(.'-$3&'4&25+!-*6'7.2'8+&'!=.'&%)2&>&3.%'.'-&%-&'*+-.3*-$A*(.'4*2*'&%%*',+!)$.!*#$(*(&:
[O time responde] Porque o desenvolvedor era novo e não o treinamos nas práticas do BDD.
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