Go CLI Hands-on

Transcript

1. (PͰ$-*πʔϧΛ࡞Δʂ
2. ௕ஸ৔ʹͳΓ·͕͢
 Θ͍Θ͍΍͍͖ͬͯ·͠ΐ͏ʂ
3. w ࠓ೔͸$-*πʔϧΛ࡞Δ࿩Λ͢ΔͷͰɼͦΕҎ֎ͷ(Pͷ࿩͸ͳΔ΂͘ආ͚ ·͢ɽ ຊ࣭ͱ͸཭Εͨίʔυ͕૿͑ΔͷͰ
   w దٓɼ༨ஊͱ֤ͯ͠ϓϥΫςΟεͷิ଍Λ͠·͢ɽ ͓͜ͱΘΓ 3
4. w ͳͥ(PͰ$-*πʔϧΛ࡞Δͷ͔
   w ࠓ೔࡞Δπʔϧͷ࢓༷೺Ѳ
   w ඪ४ϥΠϒϥϦͰ࡞ͬͯΈΔ
   w Πϯετʔϧͯ͠ΈΔ
   w ੩తϑΝΠϧΛόΠφϦʹຒΊࠐΉ
   w 4DBMBCMFͳ࣮૷ʹ͢Δ 4DIFEVMF 4
5. ͳͥ(PͰ$-*πʔϧΛ࡞Δͷ͔
6. w HIR
   QFDP (PͰ࡞ΒΕ͍ͯΔπʔϧͨͪ 6
7. w จ๏͕γϯϓϧ
   w ίϯύΠϧݴޠ
   w γϯάϧόΠφϦ
   w ΫϩείϯύΠϧՄೳ
   w ίϛϡχςΟ͕׆ൃ (PͷϝϦοτ 7
8. w γεςϚνοΫʹݎ࿚ͳαʔϏεΛ૊Ήͷ͸ۤख
   ‣ ͦ͏͍͏ͷ͸3VTUͱ͔ؔ਺ܕݴޠͷ࢓ࣄ
   ‣ υϝΠϯϩδοΫʹूதͰ͖ͯߴ଎ʹαʔϏεΛ੒௕ͤ͞ΒΕΔͷ͕ڧΈ͔ͩΒ (Pͷۤखͳ͜ͱ 8
9. w IUUQTCFODINBSLTHBNFUFBNQBHFTEFCJBOOFUCFODINBSLTHBNF GBTUFTUHPHQQIUNM
   w (P͸ίϯύΠϧݴޠ͚ͩͲ($͕Φʔόʔϔουʹͳͬͯগ͠஗͍
   ‣ ͦͷ୅ΘΓϝϞϦ҆શ
   w ͔͠͠։ൃ଎౓ͱ࣮ߦ଎౓͕ͪΐ͏Ͳ͍͍ ଎౓͸ 9
10. ααοͱ࡞Γ͍ͨ࣌ʹ
 બ୒͞ΕΔͷ͕(PMBOH
11. ࠓ೔࡞Δπʔϧͷ঺հ
12. w EBJMZSFQP
    ‣ ೔ใͷ਽ܗ࡞੒πʔϧ
    ‣ BEEαϒίϚϯυͰςϯϓϨʔτʹैͬͨϨϙʔτ࡞੒
    - dailyrepo add --name [name] w ࠓճ͸งғؾΛ௫ΉͨΊʹػೳ͸࠷௿ݶ ೔ใ਽ܗ࡞੒πʔϧ 12
13. ࣮૷͍ͯ͘͠લʹ
 ͱ͜ΖͰօ͞Μ
14. งғؾͰ$-*πʔϧ
 ࡞͍ͬͯ·ͤΜ͔ʁ
15. ࣮͸ͦΕɼϚφʔҧ൓͔΋
16. w Ҿ਺͸ͲͷΑ͏ʹઃܭ͢Δ΂͖ʁ
    w ϑΝΠϧͷѻ͍͸Ͳ͏͢Δ΂͖ʁ
    w &YJU
    4UBUVT͸ԿΛฦ͢΂͖ʁ
    w ࠔͬͨͱ͖ʹಡΉEFFFFU͞Μͷૉ੖Β͍͠ࢿྉ
    ‣ IUUQTTQFBLFSEFDLDPNUDOLTNLPNBOEPSBJOUVSVOJUVJUFZVSVUPLJOJQV GBMTFZVSVLPUPOVNCFSZBQDBTJB
    ‣ PQUJPOTͱBSHVNFOUTͷҐஔؔ܎͕ೖΕସΘͬͯΔͷ͸Α͘ݟΔ ࣮૷͢Δͱ͖ʹߟ͑Δ͜ͱ 16
17. 104*9(/6
    TUZMF
18. w IUUQTQVCTPQFOHSPVQPSHPOMJOFQVCT
    w IUUQTXXXHOVPSHTPGUXBSFMJCDNBOVBMIUNM@NPOPMJCDIUNM
    w 6OJYΛ࢝Ίͱ֤ͨ͠छ04ؒͰҠ২͠΍͍͢ΞϓϦέʔγϣϯΛ
 ࡞ΔͨΊͷࠃࡍن֨
    w ͍ͭ͜ΒͷৼΔ෣͍Λਅࣅ͓͚ͯ͠͹จ۟͸ݴΘΕͳͦ͞͏ 104*9(/6
    TUZMF 18
19. w "MM
    QSPHSBNT
    TIPVME
    TVQQPSU
    ‣ --version ‣ --help w MPOH
    PQUJPO͸Λ࢖͏
    w TIPSU
    PQUJPO͸Λ࢖͏
    ‣ ϑϥάͷ৔߹·ͱΊΔ͜ͱ͕Ͱ͖ΔΑ͏ʹ
     FH
    ls -al
    ‣ Ҿ਺ΛऔΔ৔߹͸ɼؒʹεϖʔεΛ࢖ͬͯ΋࢖Θͳͯ͘΋ྑ͍
     FH
    mysql -uroot
    w IUUQTXXXHOVPSHTPGUXBSFMJCDNBOVBMIUNM@OPEF"SHVNFOU4ZOUBYIUNM 'MBH
    0QUJPOT 19
20. w جຊతʹ͕੒ޭͰ͕ࣦഊ
    w "EWBODFE
    #BTI4DSJQUJOH
    (VJEFʹࡌ͍ͬͯΔن֨
    ‣ IUUQUMEQPSH-%1BCTIUNMFYJUDPEFTIUNM
    ‣ Ͳ͏ͤTIͰ࣮ߦ͢Δͱ͖͸CJOCBTIΛࢦఆ͢Δ͜ͱ͕ଟ͍͠
    w 'SFF#4%ϥΠϒϥϦؔ਺ϚχϡΞϧ
    ‣ IUUQTLBXPSVKQOPSHEPD'SFF#4%KNBONBOTZTFYJUTQIQ
    w ͋Μ·ΓϋϯυϦϯάͯ͠ΔΞϓϦέʔγϣϯݟͨ͜ͱແ͍͚Ͳ &YJU
    4UBUVT 20
21. w 9%(
    #BTF
    %JSFDUPSZ
    ‣ IUUQTTUBOEBSETGSFFEFTLUPQPSHCBTFEJSTQFDMBUFTUJOEFYIUNM
    ‣ πʔϧͷઃఆϑΝΠϧ΍ΩϟογϡΛͲ͜ʹஔ͔͘Λఆٛͨ͠࢓༷ॻ
     )0.&DPOpHͱ͔
    w Ұ࣌తͳϑΝΠϧ͸UNQʹஔ͘͜ͱ΋ଟ͍ 6OJYɾ-JOVYܥ ϑΝΠϧͷѻ͍ 21
22. – @mygwdesign lσβΠϯ͸ར༻͢Δ΋ͷɻΞʔτ͸ؑ৆͢Δ΋ͷɻz
23. $-*ΛσβΠϯ͠·͠ΐ͏
24. Ͱ͸͍࣮͟૷ʂ
25. w (JU)VCʹࠓ೔ͷϦϙδτϦΛ࡞͍ͬͯͩ͘͞
    ‣ ࡞੒ͨ͠πʔϧΛ(JU)VC͔Β௚઀Πϯετʔϧ͢Δͱ͖ʹ࢖͍·͢
    w ࠓ೔ͷ׬੒ܗ
    ‣ IUUQTHJUIVCDPNUBYJPHPDMJUVUPSJBM
    ‣ ໎ͬͨΒ͜͜Λࢀߟʹίϐϖ͍ͯͩ͘͠͞
    w ϋϯζΦϯͳͷͰ෼͔Βͳ͍৔߹͸ͲΜͲΜखΛ্͍͛ͯͩ͘͞
    ‣ ๻͚ͩͰ͸ख͕·ΘΒͳ͍͜ͱ΋͋ΔͷͰɼ
 ྡͷਓ͕ࠔ͍ͬͯΔ৔߹͸ڭ͍͑ͯ͋͛ͯͩ͘͞ ࡞͍ͬͯ͘ʹ͋ͨͬͯ 25
26. ඪ४ϥΠϒϥϦͰ࣮૷ͯ͠ΈΔ
27. w qBH
    ‣ IUUQTHPMBOHPSHQLHqBH
    ‣ ίϚϯυϥΠϯҾ਺Ͱ౉͞ΕΔϑϥάͷύʔεपΓΛ؅ཧͯ͘͠ΕΔ
    ‣ ͱͯ΋ബ͍ϥΠϒϥϦͳͷͰͥͻιʔεΛݺΜͰงғؾΛ௫ΜͰΈ·͠ΐ͏ ϥΠϒϥϦ঺հ 27
28. w ׬੒ܗ
    IUUQTHJUIVCDPNUBYJPHPDMJUVUPSJBMCMPCNBTUFSDNE EBJMZSFQPNBJOHP
    ‣ TUBUJLύοέʔδΛ࢖ͬͯΔͷ͸Ұ୴ແࢹͯ͠ɼJPVUJM3FBE'JMF Λ࢖͍ͬͯͩ͘͞
    w σϑΥϧτͷqBHΦϒδΣΫτΛ࢖͏ͱFSSPS)BOEMJOHʹ&YJU0O&SSPS͕
 ઃఆ͞Ε͍ͯΔͷͰɼIFMQग़ྗ࣌ʹFYJU
    TUBUVT
    Ͱऴྃͯ͠͠·͏
    ‣ AIA
    AIFMQAΛࣗ෼Ͱఆٛ͢Ε͹໰୊ͳ͍ ࣮૷͢Δ 28
29. -JWF
    $PEJOH
30. w MPOH
    PQUJPO͸Ͱ͖·͢
    ‣ IUUQNBUPQFIBUFOBCMPHDPNFOUSZ
    ‣ εϚʔτͰ͸ͳ͍
    w TIPSU
    PQUJPO͸·ͱΊΕͳͦ͞͏
    ‣ ஌Βͳ͍͚ͩͰɼ΋͔ͨ͠͠ΒͰ͖Δ͔΋
    w ͦ΋ͦ΋(Pࣗମ͕ͦ͏͍͏$-*Λఏڙ͍ͯ͠ͳ͍ qBHͰ͸104*9(/6
    TUZMFͳ$-*͸࡞Εͳ͍ʁ 30
31. Πϯετʔϧͯ͠ΈΔ
32. w go install͢Δͱ(01"5)CJOҎԼʹόΠφϦ͕ஔ͔ΕΔ
    w NBJOύοέʔδͷ͋ΔϦϞʔτϦϙδτϦΛgo getͯ͠΋0,
    ‣ HP
    HFU
    HJUIVCDPNUBYJPHPDMJIBOETPODNEEBJMZSFQP
    ‣ IUUQTHPMBOHPSHDNEHPIES %PXOMPBE@BOE@JOTUBMM@QBDLBHFT@BOE@EFQFOEFODJFT
    w όΠφϦ໊͸ʁ
    ‣ NBJOύοέʔδͷ͋ΔσΟϨΫτϦ໊ )PX
    UP
    JOTUBMM 32
33. w (PͰ͸खܰʹΫϩείϯύΠϧͰ͖Δͷ͕ڧΈͰͨ͠Ͷ
    ‣ GOOS={{OS໊}} GOARCH={{ΞʔΩςΫνϟ໊}} go build ‣ (PΠϯετʔϧ࣌ʹଞ؀ڥͷґଘ΋ೖΕ͓͚ͯ͹͜Ε͚ͩͰΫϩείϯύΠϧՄೳ ͷ ͸ͣ
    ‣ $(0ΛແޮԽ͓͚ͯ͠͹ɼTUBUJD
    MJOL΋Ͱ͖Δ
    CGO_ENABLED=0
    ‣ ରԠ؀ڥ
    IUUQTHPMBOHPSHEPDJOTUBMMTPVSDFFOWJSPONFOU
    w $*ͰόΠφϦੜ੒ͯ͠ɼ(JU)VCͷ3FMFBTFʹࡌͤΔͷ͕Α͋͘Δӡ༻ํ๏
    ‣ (P3FMFBTFSΛ࢖͏ͱָ
    ‣ IUUQTHJUIVCDPNHPSFMFBTFSHPSFMFBTFS
    ‣ IUUQTHPSFMFBTFSDPNDJ )PX
    UP
    DSPTT
    DPNQJMF 33
34. σΟϨΫτϦߏ੒ʹ͍ͭͯ 34 /Project
 main.go # package main
 lib/
 dailyrepo.go # package dailyrepo w ެ։͍ͨ͠ϓϩδΣΫτ͕πʔϧͳͷ͔ϥΠϒϥϦͳͷ͔ʹΑͬͯɼ
 σΟϨΫτϦߏ੒͸େ͖͘มΘΔɽ
    ‣ ࢀߟ
    ΈΜͳͷ(Pݴޠ
    ࠓ౓վగ൛͕ग़ΔΒ͍͠Ͱ͢
    w Ϣʔβ͕go getͨ࣌͠ͷҙਤ͠ͳ͍JOTUBMMΛճආͤ͞Δ /Project
 dailyrepo.go # package dailyrepo
 cmd/
 dailyrepo/
 main.go # package main πʔϧ όΠφϦ ͕ϝΠϯͷ੒Ռ෺ͷ৔߹ ϥΠϒϥϦ͕ϝΠϯͷ੒Ռ෺ͷ৔߹
35. ੩తϑΝΠϧΛຒΊࠐΉ
36. w (PͷڧΈͷ̍ͭʹγϯάϧόΠφϦͱ͍͏ͷ͕͋ͬͨ
    ‣ ੩తϑΝΠϧʹґଘ͢Δπʔϧͩͬͨ৔߹ɼͦͷϑΝΠϧ΋Πϯετʔϧ࣌ʹ
 μ΢ϯϩʔυͤ͞Δͷʁ
    ‣ όΠφϦʹຒΊࠐΜ͡Ό͑
    w SE
    1BSUZͷϥΠϒϥϦΛ࢖࣮ͬͯ૷͢Δ
    ‣ KUFFVXFOHPCJOEBUBͱ͍͏ͷ͕͕͋ͬͨࠓ͸%FQSFDBUFE
     ͱ͍͏͔࡞ऀ͕(JU)VCΞΧ΢ϯτΛফͨ͠
    ‣ "XFTPNF
    (PΛݟͯ୳ͦ͏
     IUUQTBXFTPNFHPDPNSFTPVSDFFNCFEEJOH ຒΊࠐΉ 36
37. ҰԠެࣜͬΆ͍΍Γํʁ 37 $ go build -ldflags "-X main.Version=v0.0.1" w SE
    1BSUZʹཔΒͳͯ͘΋όΠφϦʹ੩తϑΝΠϧ͸ຒΊࠐΊΔ
    w #VJME࣌ʹม਺ʹ஋ΛຒΊࠐΉ͜ͱ͕Ͱ͖Δ
    ‣ (JUͷ৘ใΛऔͬͯ7FSTJPOΛຒΊࠐΉͷ͸Α͘ݟΔ
    w ͍΍Ͱ΋͜ΕͰϑΝΠϧͷ಺༰ΛຒΊࠐΉͷ͸ਏ͍
38. w IUUQTHJUIVCDPNSBLZMMTUBUJL
    w ੩తϑΝΠϧͷ[JQσʔλ όΠτྻ Λ(PίʔυͷதʹϋʔυίʔσΟϯά ͍ͯ͠Δɽ
    ‣ *T
    UIJT
    B
    DSB[Z
    JEFB
    /P
    OPU
    OFDFTTBSZ SBLZMMTUBUJL 38
39. TUBUJLͰຒΊࠐΜͰΈΔ 39 # install
 $ go get github.com/rakyll/statik # ϑΝΠϧ࡞੒
 $ statik --src=templates/ w ͖ͬ͞ͷςϯϓϨʔτϑΝΠϧಡΈࠐΈΛࠩ͠ସ͑·͠ΐ͏
    ‣ IUUQTHJUIVCDPNUBYJPHPDMJUVUPSJBMCMPCNBTUFSDNEEBJMZSFQPNBJOHP
40. TUBUJLͰຒΊࠐΜͰΈΔ 40 bptl, err := ioutil.ReadFile("../../templates/report.md.tmpl") statikFs, err := fs.New() if err != nil { log.Fatal(err) } tplFile, err := statikFs.Open("/report.md.tmpl") if err != nil { log.Fatal(err) } defer tplFile.Close() btpl, err := ioutil.ReadAll(tplFile)
41. -JWF
    $PEJOH
42. ͜͜ͰҰ୴׬੒ʂ
43. Ͱ΋ػೳ͕૿͖͑ͯͨΒʁ
    ͜ͷϑϥά؅ཧͰεέʔϧͰ͖Δ
44. 4DBMBCMFͳ࣮૷ʹม͑Δ
45. w ϑϥάͷύʔαʔΛ΋ͬͱݡ͍΋ͷʹ͢Δ
    ‣ ྲྀੴʹTIPSU
    MPOH
    PQUJPO͸ཉ͍͠
    ‣ TIPSU
    PQUJPOΛ·ͱΊ͍ͨ
    w ςετ͠΍͍͢Α͏ʹ͢Δ
    ‣ ϑΝΠϧγεςϜૢ࡞ͩͬͯςετ͍ͨ͠
    ‣ ඪ४ग़ྗͩͬͯςετ͍ͨ͠ ํ਑ 45
47. w ͜ͷਓͷੈք؍ʹै͑͹େମඞཁͳػೳ͸ἧ͏
    w QqBH
    ‣ 104*9(/6
    TUZMF४ڌͳqBHΑΓͪΐͬͱݡ͍ϑϥάύʔαʔ
    w DPCSB
    ‣ QqBHΛϕʔεʹ࡞ΒΕͨ$-*ϑϨʔϜϫʔΫ
    w BGFSP
    ‣ ϑΝΠϧγεςϜͷந৅ԽϥΠϒϥϦ
    w WJQFS
    ‣ ઃఆϑΝΠϧ؅ཧϥΠϒϥϦ TQGͱ͍͏εΰ͍ਓ 47
48. ·ͣDPCSBͰ࣮૷͍ͯ͘͠ 48 # install
 $ go get github.com/spf13/cobra # init
 $ cobra init dailyrepo --pkg-name github.com/{Ϣʔβʔ໊}/{ϦϙδτϦ໊}/cmd/dailyrepo # create `add` sub command
 $ cobra add add w ؤு͖ͬͯͬ͞ͷ࣮૷Λ࠶ݱ
    ‣ IUUQTHJUIVCDPNUBYJPHPDMJUVUPSJBMUSFFNBTUFSDNEEBJMZSFQPFY
49. -JWF
    $PEJOH
50. w IUUQTHJUIVCDPNBWFMJOPBXFTPNFHPTUBOEBSEDMJ
    w Α͘ฉ͘΍ͭ
    ‣ KFTTFWELHPqBHT
    ‣ BMFDUIPNBTLJOHQJO
    ‣ VSGBDFDMJ
    ‣ NJUDIFMMIDMJ QqBH
    DPCSBҎ֎ͷબ୒ࢶ 50
51. TQGBGFSP 51 # install
 $ go get github.com/spf13/afero w IUUQTHJUIVCDPNTQGBGFSP
    w ϑΝΠϧγεςϜͷૢ࡞Λந৅Խͯ͘͠ΕΔϥΠϒϥϦ
    ‣ BGFSP'T0T
    04ଆͷϑΝΠϧγεςϜ
    ‣ BGFSP.FN.BQ'T
    ϝϞϦ্ʹߏங͞ΕͨϑΝΠϧγεςϜ
     ςετ࣌ʹ࢖͏
52. -JWF
    $PEJOH
53. w GNU1SJOUMO ͸PT4UEPVUʹରͯ͠GNU'QSJOUMO ͍ͯ͠Δɽ
    ‣ PT4UEPVUΛCZUFT#V⒎FSʹࠩ͠ସ͑ΕΔΑ͏ʹ͓ͯ͘͠
    w ࠓճ͸WFSTJPOͷQSJOUΛςετͯ͠Έ·͢ ඪ४ग़ྗΛςετ͢Δ 53
54. -JWF
    $PEJOH
55. ׬੒ʂ
56. w HJUIVCDPNTQGWJQFS
    ‣ ίϚϯυϥΠϯϑϥάɼ؀ڥม਺ɼઃఆϑΝΠϧ KTPO
    UPNM
    ZBNM
    FUD ɼ
 ϦϞʔτઃఆγεςϜ FUDE
    FUD ɼσϑΥϧτ஋͔Βઃఆ஋Λऔಘ͢Δɽ
    w os.UserHomeDir, os.UserCacheDir, 
 os.UserConfigDir ͜Ε͸·ͩϦϦʔε͞Εͯͳ͍ Λ࢖ͬͯ
 ઃఆϑΝΠϧΛݟ͚ͭΑ͏ ༨ஊ
    ઃఆϑΝΠϧͷ࿩ 56
57. w ࠷ۙͷπʔϧ͸݁ߏ(PͰॻ͔Ε͍ͯΔ
    w (Pͩͱ࡞੒࣌΋࡞੒ޙ΋࢖͍΍͍͢$-*πʔϧΛ࡞Δ͜ͱ͕Ͱ͖Δ
    w டংͷແ͍$-*͸Ξʔτ ·ͱΊ 57
58. w MPHHJOH
    ‣ cobra.OnInitialize()ͰWFSCPTFͷਅِ஋ΛݟͯMPHͷઃఆΛม͑ͨΓ͢Δ
    w ΞʔΩςΫνϟ
    ‣ جຊతʹࠓ೔ͷϑΝΠϧγεςϜ΍ඪ४ग़ྗͷந৅ԽͷΑ͏ͳΠϝʔδͰ
 ͦΕͧΕͷ੹຿Λશ͏͢ΔϞδϡʔϧΛந৅Խ͍ͯ͘͠
    ‣ (PͰ"1*αʔόʔΛ࣮૷͢Δͱ͖͸ϨΠϠʔυΞʔΩςΫνϟ͕Α͘࠾༻͞Ε·͢
    w ΤϥʔϋϯυϦϯά
    ‣ (PͰYFSSPST͕ඪ४ͷFSSPSTʹ૊Έࠐ·ΕΔΒ͍͠Ͱ͢
     IUUQTHPHPPHMFTPVSDFDPNQSPQPTBM NBTUFSEFTJHOFSSPSWBMVFTNE
    ‣ ϋϯυϦϯάʹ͍ͭͯ
    IUUQTNFEJVNDPNZBLLBCFUUFSHPFSSPSIBOEMJOHXJUI YFSSPSTFD ࠓ೔࿩ͯ͠ͳ͍಺༰ 58
59. w HP[
    (Pʹؔ͢Δχϡʔε·ͱΊ
    ‣ IUUQHP[IFYBDPTBOFU
    w HP
    XJLJ
    ৭ʑͳϓϥΫςΟε͕·ͱ·͍ͬͯΔ
    ‣ IUUQTHJUIVCDPNHPMBOHHPXJLJ
    w 5IF
    (P
    #MPH
    ެࣜΞφ΢ϯεͱ͔
    ‣ IUUQTCMPHHPMBOHPSH ༨ஊ
    (PΛֶͼ͍ͨͳΒ 59
60. Ҏ্ʂ
    ͓ർΕ༷Ͱͨ͠ʂ