{"id":30639,"date":"2019-10-31T21:36:39","date_gmt":"2019-10-31T18:36:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/waveskit-php-frejmvork-dlya-raboty-s-blokchejnom-waves\/"},"modified":"2019-10-31T21:36:39","modified_gmt":"2019-10-31T18:36:39","slug":"waveskit-php-frejmvork-dlya-raboty-s-blokchejnom-waves","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/waveskit-php-frejmvork-dlya-raboty-s-blokchejnom-waves","title":{"rendered":"WavesKit \u2014 PHP framework pro pr\u00e1ci s blockchainem Waves","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

M\u00e1m r\u00e1d PHP<\/a><\/noindex> za rychlost v\u00fdvoje a vynikaj\u00edc\u00ed p\u0159enositelnost. Je to velmi u\u017eite\u010dn\u00e9, kdy\u017e m\u00e1te v\u017edy po ruce n\u00e1stroj p\u0159ipraven\u00fd k \u0159e\u0161en\u00ed \u00fakol\u016f.<\/p>\n

<\/p>\n

Bylo docela zklam\u00e1n\u00edm, kdy\u017e p\u0159i seznamov\u00e1n\u00ed s dom\u00e1c\u00edm blockchainem Waves Platform<\/a><\/noindex> ve sv\u00e9m arzen\u00e1lu nem\u011bl p\u0159ipraven\u00e9 SDK na PHP. No, musel jsem ho napsat.<\/p>\n

<\/a><\/noindex><\/p>\n

Na za\u010d\u00e1tku jsem musel pou\u017e\u00edvat nody<\/a><\/noindex> k podepisov\u00e1n\u00ed transakc\u00ed. Tak\u017ee pro spr\u00e1vu t\u0159\u00ed adres bylo nutn\u00e9 spustit t\u0159i uzly\u2026 To bylo zoufal\u00e9, i kdy\u017e to \u0159e\u0161ilo n\u011bkter\u00e9 \u00fakoly. A\u017e do chv\u00edle, kdy jsem pochopil, \u017ee spol\u00e9hat na uzly je bezv\u00fdchodn\u00e1 situace. Za prv\u00e9, kv\u016fli omezen\u00e9 funk\u010dnosti API<\/a><\/noindex>, za druh\u00e9, kv\u016fli rychlosti (v t\u011bch dnech byly uzly velmi pomal\u00e9).<\/p>\n

<\/p>\n

Za\u010dal jsem dv\u011b paraleln\u00ed pr\u00e1ce. Jedna \u2013 vytvo\u0159it blockchainov\u00fd prohl\u00ed\u017ee\u010d, kter\u00fd bude rychl\u00fd a zcela nez\u00e1visl\u00fd na API uzl\u016f. Druh\u00e1 \u2013 shrom\u00e1\u017edit v\u0161echny funkce pro pr\u00e1ci s Waves Platform na jednom m\u00edst\u011b. Tak vznikly projekty w8io<\/a><\/noindex> a WavesKit<\/a><\/noindex>.<\/p>\n

<\/p>\n

Prvn\u00edm krokem na cest\u011b za kulisy blockchainu Waves byl prohl\u00ed\u017ee\u010d w8io<\/a><\/noindex>. Nebylo to snadn\u00e9, ale p\u0159esto se mi poda\u0159ilo napsat nez\u00e1visl\u00fd v\u00fdpo\u010det v\u0161ech z\u016fstatk\u016f a dokonce naj\u00edt chybu v v\u00fdpo\u010dtech na origin\u00e1ln\u00edch uzlech (program bug-bounty<\/a><\/noindex> , mimochodem, u nich funguje, za nalezen\u00e9 chyby plat\u00ed). M\u016f\u017eete se pod\u00edvat na funkce prohl\u00ed\u017ee\u010de w8io v tomto t\u00e9matu: https:\/\/forum.wavesplatform.com\/t\/w8io-waves-explorer-based-on-php-sqlite<\/a><\/noindex><\/p>\n

<\/p>\n

B\u011bhem pr\u00e1ce na w8io jsem m\u011bl u\u017e pochybnosti, ale kdy\u017e pr\u00e1ce dosp\u011bla k logick\u00e9mu konci a j\u00e1 za\u010dal tvo\u0159it SDK, pochybnosti se potvrdily. Nikde jsem nemohl naj\u00edt n\u011bkter\u00e9 funkce, v\u010detn\u011b t\u011bch nejd\u016fle\u017eit\u011bj\u0161\u00edch, kryptografick\u00fdch. Tehdy jsem za\u010dal vytv\u00e1\u0159et sv\u00e9 vlastn\u00ed komponenty pro z\u00e1klad. Tak se zrodily: ABCode<\/a><\/noindex> pro k\u00f3dov\u00e1n\u00ed do base58 (ve skute\u010dnosti pro k\u00f3dov\u00e1n\u00ed jak\u00e9koli abecedy do jak\u00e9koli), Curve25519<\/a><\/noindex> pro vytv\u00e1\u0159en\u00ed a ov\u011b\u0159ov\u00e1n\u00ed kompatibiln\u00edch podpis\u016f (s variantami na steroidy<\/a><\/noindex>), Blake2b<\/a><\/noindex> pro v\u00fdpo\u010det jednoho z hash\u016f (kter\u00fd byl dostupn\u00fd a\u017e od PHP 7.2) atd.<\/p>\n

<\/p>\n

Tady bych m\u011bl pod\u011bkovat Inalovi Kardanovovi<\/a><\/noindex> za n\u011bkolik cenn\u00fdch rad, kter\u00e9 m\u011b nasm\u011brovaly k composer<\/a><\/noindex> nam\u00edsto mn\u011b zn\u00e1m\u00fdch, ale zastaral\u00fdch, include soubor\u016f.<\/p>\n

<\/p>\n

Po n\u011bkolika m\u011bs\u00edc\u00edch WavesKit spat\u0159il sv\u011btlo sv\u011bta<\/noindex>, vy\u0161el z beta verze<\/a><\/noindex> a nyn\u00ed je p\u0159ipraven pracovat se v\u0161emi standardn\u00edmi funkcemi platformy Waves. V\u0161e dostupn\u00e9 v hlavn\u00ed s\u00edti<\/a><\/noindex> Transakce mohou b\u00fdt snadno vytv\u00e1\u0159eny, podepisov\u00e1ny a odes\u00edl\u00e1ny pomoc\u00ed jedin\u00e9ho bal\u00ed\u010dku funguj\u00edc\u00edho na v\u0161ech 64bitov\u00fdch verz\u00edch PHP od 5.6 v\u010detn\u011b.<\/p>\n

<\/p>\n

P\u0159ipojte WavesKit do sv\u00e9ho projektu:<\/p>\n

<\/p>\n

composer require deemru\/waveskit<\/code><\/pre>\n
<\/p>\n
Pou\u017e\u00edv\u00e1me:<\/p>\n
<\/p>\n
use deemruWavesKit;\n$wk = new WavesKit('T');\n$wk->setSeed('manage manual recall harvest series desert melt police rose hollow moral pledge kitten position add');\n$tx = $wk->txBroadcast($wk->txSign($wk->txTransfer('test', 1))); \n$tx = $wk->ensure($tx);<\/code><\/pre>\n
<\/p>\n
V uveden\u00e9m p\u0159\u00edkladu vytv\u00e1\u0159\u00edme objekt WavesKit, kter\u00fd pracuje v testovac\u00ed s\u00edti \u201eT\u201c. Nastavujeme seed fr\u00e1zi, ze kter\u00e9 se automaticky vypo\u010d\u00edtaj\u00ed kl\u00ed\u010de a adresa \u00fa\u010dtu na z\u00e1klad\u011b ve\u0159ejn\u00e9ho kl\u00ed\u010de. Pot\u00e9 vytv\u00e1\u0159\u00edme transakci p\u0159evodu 0.00000001 Waves z automaticky vypo\u010d\u00edtan\u00e9 adresy podle seed fr\u00e1ze na adresu aliasu \u201etest\u201c, p\u0159ed\u00e1v\u00e1me ji k podpisu soukrom\u00fdm kl\u00ed\u010dem a odes\u00edl\u00e1me do s\u00edt\u011b. Pot\u00e9 se ujist\u00edme, \u017ee byla transakce \u00fasp\u011b\u0161n\u011b potvrzena s\u00edt\u00ed.<\/p>\n
<\/p>\n
Pr\u00e1ce s transakcemi se soust\u0159ed\u00ed na funkce za\u010d\u00ednaj\u00edc\u00ed s tx<\/a><\/noindex>. Pro lep\u0161\u00ed pochopen\u00ed pr\u00e1ce s transakcemi m\u016f\u017eete studovat dokumentaci WavesKit<\/a><\/noindex> nebo se hned pod\u00edvat na n\u00e1zorn\u00e9 p\u0159\u00edklady v testech kontinu\u00e1ln\u00ed integrace.<\/a><\/noindex>.<\/p>\n
<\/p>\n
Jeliko\u017e se WavesKit vyv\u00edjela v podm\u00ednk\u00e1ch re\u00e1ln\u00e9ho pou\u017eit\u00ed, m\u00e1 ji\u017e pokro\u010dil\u00e9 funkce. Prvn\u00ed killer feature je funkce ensure<\/a><\/noindex>, kter\u00e1 kontroluje dosa\u017een\u00ed po\u017eadovan\u00e9 \u00farovn\u011b jistoty, \u017ee transakce nebyla ztracena, ale naopak byla potvrzena a dos\u00e1hla pot\u0159ebn\u00e9ho po\u010dtu potvrzen\u00ed v s\u00edti.<\/p>\n
<\/p>\n
Dal\u0161\u00ed nepr\u016fst\u0159eln\u00fd mechanismus je, jak WavesKit komunikuje s nodami. V ide\u00e1ln\u00edch podm\u00ednk\u00e1ch r\u00e1mec pracuje pouze s hlavn\u00ed nodou, s n\u00ed\u017e udr\u017euje trval\u00e9 spojen\u00ed, ale p\u0159i chyb\u00e1ch m\u016f\u017ee automaticky p\u0159ep\u00ednat na z\u00e1lo\u017en\u00ed. Pokud nastav\u00edte pole z\u00e1lo\u017en\u00edch nod\u016f, m\u016f\u017eete volat funkci setBestNode<\/a><\/noindex> pro ur\u010den\u00ed nejlep\u0161\u00ed nody jako hlavn\u00ed na z\u00e1klad\u011b maxim\u00e1ln\u00ed hodnoty aktu\u00e1ln\u00ed v\u00fd\u0161ky a rychlosti odpov\u011bdi. Nyn\u00ed k tomu p\u0159idejte intern\u00ed cache dotaz\u016f a poc\u00edt\u00edte p\u00e9\u010di jak o u\u017eivatele, tak o vlastn\u00edky nod\u016f.<\/p>\n
<\/p>\n
Jedn\u00edm z posledn\u00edch pokro\u010dil\u00fdch mechanism\u016f je funkce txMonitor<\/a><\/noindex>. Objevila se v souvislosti s pot\u0159ebou reagovat na p\u0159\u00edchoz\u00ed transakce v re\u00e1ln\u00e9m \u010dase. Tato funkce pln\u011b \u0159e\u0161\u00ed v\u0161echny nuance spojen\u00e9 se zpracov\u00e1n\u00edm transakc\u00ed v blockchainu. \u017d\u00e1dn\u00e1 bolest, jednodu\u0161e nastav\u00edte svou callback funkci s po\u017eadovan\u00fdmi mo\u017enostmi a \u010dek\u00e1te na nov\u00e9 transakce, kter\u00e9 spust\u00ed va\u0161e procesy. Nap\u0159\u00edklad, dal\u0161\u00ed m\u016fj projekt. VECRO<\/a><\/noindex> je zcela postaven kolem t\u00e9to funkce, m\u016f\u017eete si v klidu prozkoumat, jak funguje p\u0159\u00edmo ve zdrojov\u00e9m k\u00f3du projektu.<\/a><\/noindex>.<\/p>\n
<\/p>\n
Miluji open source, to je jedno z nejv\u011bt\u0161\u00edch \u00fasp\u011bch\u016f lidstva. Proto\u017ee jsem jedin\u00fd v\u00fdvoj\u00e1\u0159 a dos\u00e1hl jsem stavu, kdy jsou v\u0161echny m\u00e9 pot\u0159eby vy\u0159e\u0161eny, zvu v\u00e1s, abyste pou\u017e\u00edvali a p\u0159isp\u00edvali do WavesKit<\/a><\/noindex>.<\/p>\n
Zdroj: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"
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