{"id":52506,"date":"2019-11-10T00:00:00","date_gmt":"2019-11-09T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/kak-napisat-smart-kontrakt-na-python-v-seti-ontology-chast-1-blockchain-block-api"},"modified":"2020-02-18T14:00:15","modified_gmt":"2020-02-18T11:00:15","slug":"kak-napisat-smart-kontrakt-na-python-v-seti-ontology-chast-1-blockchain-block-api","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/kak-napisat-smart-kontrakt-na-python-v-seti-ontology-chast-1-blockchain-block-api","title":{"rendered":"Si t\u00eb shkruani nj\u00eb kontrat\u00eb t\u00eb zgjuar n\u00eb Python n\u00eb rrjetin Ontology. Pjesa 1: Blockchain & Block API","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"Si
\n
\nKy \u00ebsht\u00eb pjesa e par\u00eb e nj\u00eb serie artikujsh m\u00ebsimor\u00eb p\u00ebr krijimin e kontratave inteligjente n\u00eb Python n\u00eb rrjetin blockchain Ontology duke p\u00ebrdorur mjetin p\u00ebr zhvillimin e kontratave inteligjente. SmartX<\/a><\/noindex>. <\/p>\n

N\u00eb k\u00ebt\u00eb artikull ne do t\u00eb fillojm\u00eb njohjen me API-n\u00eb e kontrat\u00ebs inteligjente Ontology. API-ja e kontrat\u00ebs inteligjente Ontology ndahen n\u00eb 7 module: <\/p>\n

    \n
  1. Blockchain & Block API, <\/li>\n
  2. Runtime API, <\/li>\n
  3. Storage API, <\/li>\n
  4. Native API, <\/li>\n
  5. Upgrade API, <\/li>\n
  6. Execution Engine API dhe <\/li>\n
  7. Static & Dynamic Call API.<\/li>\n<\/ol>\n

    \nBlockchain & Block API \u00ebsht\u00eb pjesa kryesore e sistemit t\u00eb kontratave inteligjente Ontology. Blockchain API mb\u00ebshtet operacionet baz\u00eb t\u00eb k\u00ebrkesave blockchain, si\u00e7 \u00ebsht\u00eb marrja e lart\u00ebsis\u00eb aktuale t\u00eb bllokut, nd\u00ebrsa Block API mb\u00ebshtet operacionet baz\u00eb t\u00eb k\u00ebrkesave p\u00ebr bllokun, si\u00e7 \u00ebsht\u00eb k\u00ebrkimi i numrit t\u00eb transaksioneve p\u00ebr nj\u00eb bllok t\u00eb caktuar.<\/p>\n

    Le t\u00eb fillojm\u00eb!<\/b><\/p>\n

    S\u00eb pari krijoni nj\u00eb kontrat\u00eb t\u00eb re n\u00eb SmartX<\/a><\/noindex>, dhe pastaj ndiqni udh\u00ebzimet m\u00eb posht\u00eb.
    \n     <\/a><\/noindex><\/p>\n

    1. Si t\u00eb p\u00ebrdorni Blockchain API<\/h3>\n

    \nReferencat p\u00ebr funksionet e kontratave inteligjente jan\u00eb identike me ato n\u00eb Python. Ju mund t\u00eb e shkruani funksionet p\u00ebrkat\u00ebse sipas nevoj\u00ebs. P\u00ebr shembull, udh\u00ebzimi m\u00eb posht\u00eb th\u00ebrret GetHeight\u2014 funksionin p\u00ebr t\u00eb marr\u00eb lart\u00ebsin\u00eb aktuale t\u00eb bllokut, dhe GetHeader\u2014 funksionin p\u00ebr t\u00eb marr\u00eb titullin e bllokut.<\/p>\n

    from ontology.interop.System.Blockchain import GetHeight, GetHeader<\/code><\/pre>\n
    <\/p>\n
    GetHeight<\/h4>\n
    \nGetHeight p\u00ebrdoret p\u00ebr t\u00eb marr\u00eb numrin e fundit rendit t\u00eb bllokut n\u00eb blockchain, si\u00e7 ilustrohet n\u00eb shembullin m\u00eb posht\u00eb. N\u00eb k\u00ebt\u00eb shembull, p\u00ebr thjesht\u00ebsi do ta anashkalojm\u00eb funksionin Main, por ju mund ta shtoni at\u00eb n\u00ebse \u00ebsht\u00eb e nevojshme.<\/p>\n
    from ontology.interop.System.Runtime import Notify\nfrom ontology.interop.System.Blockchain import GetHeight\ndef Main(operation):\n    if operation == 'demo':\n        return demo()\n    return False\n\ndef demo():\n    height=GetHeight()\n    Notify(height) # print height\n    return height #return height after running the function<\/code><\/pre>\n
    <\/p>\n
    GetHeader<\/h4>\n
    \nGetHeader p\u00ebrdoret p\u00ebr t\u00eb marr\u00eb titullin e bllokut, parametri \u00ebsht\u00eb numri rendit t\u00eb bllokut n\u00eb blockchain. Shembull:<\/p>\n
    from ontology.interop.System.Runtime import Notify\nfrom ontology.interop.System.Blockchain import GetHeader\ndef demo():\n    block_height=10\n    header=GetHeader(block_height) \n    Notify(header)\nreturn header<\/code><\/pre>\n
    <\/p>\n
    GetTransactionByHash<\/h4>\n
    \nGetTransactionByHash p\u00ebrdoret p\u00ebr t\u00eb marr\u00eb transaksionin p\u00ebrmes hash-it t\u00eb transaksionit. Hash-i i transaksionit d\u00ebrgohet n\u00eb GetTransactionByHash <\/i>si parametra n\u00eb formatin bytearray. \u00c7el\u00ebsi p\u00ebr k\u00ebt\u00eb funksion \u00ebsht\u00eb konvertimi i hash-it t\u00eb transaksionit nga formati hex n\u00eb hash-in e transaksionit n\u00eb formatin bytearray. Ky \u00ebsht\u00eb nj\u00eb hap i r\u00ebnd\u00ebsish\u00ebm. N\u00eb t\u00eb kund\u00ebrt, do t\u00eb merrni nj\u00eb gabim q\u00eb tregon se nuk ka bllok me nj\u00eb hash t\u00eb till\u00eb. Le t\u00eb marrim si shembull hash-in e transaksionit n\u00eb formatin hex, p\u00ebr ta konvertuar at\u00eb n\u00eb formatin bytearray. Shembulli duket si m\u00eb posht\u00eb:<\/p>\n
    9f270aa3a4c13c46891ff0e1a2bdb3ea0525669d414994aadf2606734d0c89c1<\/code><\/pre>\n
    \nS\u00eb pari, kthejeni p\u00ebrmbys hash-in e transaksionit:<\/p>\n
    c1890c4d730626dfaa9449419d662505eab3bda2e1f01f89463cc1a4a30a279<\/code><\/pre>\n
    \nZhvilluesit mund t\u00eb realizojn\u00eb k\u00ebt\u00eb hap me an\u00eb t\u00eb mjetit t\u00eb konvertimit Hex Number(little endian)Number, i cili ofrohet nga SmartX.<\/p>\n
    Pastaj, konvertoni rezultatin e marr\u00eb n\u00eb formatin bytearray:<\/p>\n
    {0xc1,0x89,0x0c,0x4d,0x73,0x06,0x26,0xdf,0xaa,0x94,0x49,0x41,0x9d,0x66,0x25,0x05,0xea,0xb3,0xbd,0xa2,0xe1,0xf0,0x1f,0x89,0x46,0x3c,0xc1,0xa4,0xa3,0x0a,0x27,0x9f}<\/code><\/pre>\n
    \nKjo mund t\u00eb b\u00ebhet me an\u00eb t\u00eb mjetit t\u00eb konvertimit String Byte Array, i cili ofrohet nga SmartX. S\u00eb fundmi, konvertoni bytearray q\u00eb keni marr\u00eb n\u00eb nj\u00eb varg t\u00eb till\u00eb:<\/p>\n
    xc1x89x0cx4dx73x06x26xdfxaax94x49x41x9dx66x25x05xeaxb3xbdxa2xe1xf0x1fx89x46x3cxc1xa4xa3x0ax27x9f<\/code><\/pre>\n
    \nM\u00eb posht\u00eb \u00ebsht\u00eb nj\u00eb shembull funksioni GetTransactionByHash, i cili merr transaksionin p\u00ebrmes hash-it t\u00eb transaksionit:<\/p>\n
    from ontology.interop.System.Blockchain import GetTransactionByHash\ndef demo():\n    # tx_hash=\"9f270aa3a4c13c46891ff0e1a2bdb3ea0525669d414994aadf2606734d0c89c1\"    \n    tx_hash=bytearray(b\"xc1x89x0cx4dx73x06x26xdfxaax94x49x41x9dx66x25x05xeaxb3xbdxa2xe1xf0x1fx89x46x3cxc1xa4xa3x0ax27x9f\")\n    tx=GetTransactionByHash(tx_hash)\n    return tx<\/code><\/pre>\n
    GetTransactionHeight<\/h4>\n
    \nGetTransactionHeight p\u00ebrdoret p\u00ebr t\u00eb marr\u00eb lart\u00ebsin\u00eb e transaksionit p\u00ebrmes hash-it t\u00eb transaksionit. Le t\u00eb marrim hash-in nga shembulli m\u00eb sip\u00ebr:<\/p>\n
    from ontology.interop.System.Blockchain import GetTransactionHeight\ndef demo():\n    #   tx_hash=\"9f270aa3a4c13c46891ff0e1a2bdb3ea0525669d414994aadf2606734d0c89c1\"    \n    tx_hash=bytearray(b\"xc1x89x0cx4dx73x06x26xdfxaax94x49x41x9dx66x25x05xeaxb3xbdxa2xe1xf0x1fx89x46x3cxc1xa4xa3x0ax27x9f\")\n    height=GetTransactionHeight(tx_hash)\n    return height<\/code><\/pre>\n
    <\/p>\n
    GetContract<\/h4>\n
    \nZhvilluesit mund t\u00eb p\u00ebrdorin funksionin GetContract p\u00ebr t\u00eb marr\u00eb kontrat\u00ebn p\u00ebrmes hash-it t\u00eb kontrat\u00ebs. Procesi i konvertimit t\u00eb hash-it t\u00eb kontrat\u00ebs \u00ebsht\u00eb i ngjash\u00ebm me procesin e konvertimit t\u00eb hash-it t\u00eb transaksionit, i cili p\u00ebrmendet m\u00eb sip\u00ebr.<\/p>\n
    from ontology.interop.System.Blockchain import GetContract\ndef demo():\n    # contract_hash=\"d81a75a5ff9b95effa91239ff0bb3232219698fa\"    \n    contract_hash=bytearray(b\"xfax98x96x21x32x32xbbxf0x9fx23x91xfaxefx95x9bxffxa5x75x1axd8\")\n    contract=GetContract(contract_hash)\n    return contract<\/code><\/pre>\n
    <\/p>\n
    GetBlock<\/h4>\n
    \nGetBlock p\u00ebrdoret p\u00ebr t\u00eb marr\u00eb nj\u00eb bllok. Ka dy m\u00ebnyra p\u00ebr t\u00eb marr\u00eb nj\u00eb bllok t\u00eb caktuar.<\/p>\n
    1. Merrni nj\u00eb bllok sipas lart\u00ebsis\u00eb s\u00eb bllokut:<\/b><\/p>\n
    from ontology.interop.System.Blockchain import GetBlock\ndef demo():\n    block=GetBlock(1408)\n    return block<\/code><\/pre>\n
    \n2. Merrni nj\u00eb bllok sipas hash-it t\u00eb bllokut:<\/b><\/p>\n
    from ontology.interop.System.Blockchain import GetBlock\ndef demo():    \n    block_hash=bytearray(b'x16xe0xc5x40x82x79x77x30x44xeax66xc8xc4x5dx17xf7x17x73x92x33x6dx54xe3x48x46x0bxc3x2fxe2x15x03xe4')\n    block=GetBlock(block_hash)<\/code><\/pre>\n
    <\/p>\n
    2. Si t\u00eb p\u00ebrdorni Block API<\/h3>\n
    \nKa tre funksione t\u00eb disponueshme n\u00eb Block API: GetTransactions<\/i>, GetTransactionCount<\/i>, dhe GetTransactionByIndex<\/i>. Ne do t'i shqyrtojm\u00eb ato nj\u00eb nga nj\u00eb.<\/p>\n
    GetTransactionCount<\/h4>\n
    \nGetTransactionCount p\u00ebrdoret p\u00ebr t\u00eb marr\u00eb numrin e transaksioneve p\u00ebr nj\u00eb bllok t\u00eb caktuar.<\/p>\n
    from ontology.interop.System.Blockchain import GetBlock\nfrom ontology.interop.System.Block import GetTransactionCount\ndef demo():\n    block=GetBlock(1408)\n    count=GetTransactionCount(block)\n    return count<\/code><\/pre>\n
    <\/p>\n
    GetTransactions<\/h3>\n
    \nZhvilluesit mund t\u00eb p\u00ebrdorin funksionin GetTransactions p\u00ebr t\u00eb marr\u00eb t\u00eb gjitha transaksionet n\u00eb k\u00ebt\u00eb bllok.<\/p>\n
    from ontology.interop.System.Blockchain import GetBlock\nfrom ontology.interop.System.Block import GetTransactions \ndef demo():\n    block=GetBlock(1408)\n    txs=GetTransactions(block)\n    return txs<\/code><\/pre>\n
    <\/p>\n
    GetTransactionByIndex<\/h4>\n
    \nGetTransactionByIndex p\u00ebrdoret p\u00ebr t\u00eb marr\u00eb nj\u00eb transaksion t\u00eb caktuar n\u00eb k\u00ebt\u00eb bllok.<\/p>\n
    from ontology.interop.System.Blockchain import GetBlock\nfrom ontology.interop.System.Block import GetTransactionByIndex\ndef demo():\n    block=GetBlock(1408)\n    tx=GetTransactionByIndex(block,0) # indeksi fillon nga 0.\n    return tx<\/code><\/pre>\n
    \nUdhezimi i plot\u00eb mund t\u00eb gjendet n\u00eb GitHub<\/a><\/noindex>.<\/p>\n
    Pasth\u00ebnie<\/h3>\n
    \nBlockchain & Block API \u00ebsht\u00eb nj\u00eb pjes\u00eb thelb\u00ebsore e kontratave inteligjente, pasi mund t\u00eb p\u00ebrdorni ato p\u00ebr t\u00eb k\u00ebrkuar t\u00eb dh\u00ebna nga blockchain dhe t\u00eb dh\u00ebna blloku n\u00eb kontratat inteligjente. N\u00eb artikujt e ardhsh\u00ebm do t\u00eb diskutojm\u00eb se si t\u00eb p\u00ebrdorim API t\u00eb tjera dhe do t\u00eb zbulojm\u00eb nd\u00ebrveprimin e tyre me blockchain-in Ontology.<\/p>\n
    Artikulli \u00ebsht\u00eb p\u00ebrkthyer nga redaksia Hashrate&Shares ekskluzivisht p\u00ebr OntologyRussia. klik<\/a><\/noindex> <\/p><\/blockquote>\n
     Jeni zhvillues? Bashkohuni me komunitetin ton\u00eb teknik n\u00eb Discord<\/a><\/noindex>. P\u00ebr m\u00eb tep\u00ebr, shikoni n\u00eb Qendr\u00ebn e zhvilluesve<\/a><\/noindex> n\u00eb faqen ton\u00eb, ku mund t\u00eb gjeni mjete zhvilluesi, dokumentacion dhe shum\u00eb m\u00eb tep\u00ebr.<\/p>\n
    Ontology<\/h4>\n
    <\/p>\n