{"id":34530,"date":"2023-07-15T05:10:10","date_gmt":"2023-05-27T10:28:54","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e5%88%9b%e5%bb%ba%e4%ba%86%e4%b8%80%e4%b8%aa%e9%92%a9%e5%8f%96gae-go%e7%9a%84rpc%e7%9a%84%e5%ba%93%e7%a7%b0%e4%b8%baaespy%e3%80%82\/"},"modified":"2024-04-30T13:38:05","modified_gmt":"2024-04-30T05:38:05","slug":"%e6%88%91%e5%88%9b%e5%bb%ba%e4%ba%86%e4%b8%80%e4%b8%aa%e9%92%a9%e5%8f%96gae-go%e7%9a%84rpc%e7%9a%84%e5%ba%93%e7%a7%b0%e4%b8%baaespy%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e5%88%9b%e5%bb%ba%e4%ba%86%e4%b8%80%e4%b8%aa%e9%92%a9%e5%8f%96gae-go%e7%9a%84rpc%e7%9a%84%e5%ba%93%e7%a7%b0%e4%b8%baaespy%e3%80%82\/","title":{"rendered":"\u6211\u521b\u5efa\u4e86\u4e00\u4e2a\u94a9\u53d6GAE\/Go\u7684RPC\u7684\u5e93\u79f0\u4e3a”aespy”"},"content":{"rendered":"

@laco0416\uff0c\u6211\u662f\u4e00\u4e2a\u7528\u4e8e\u4ecb\u5165GAE\/Go\u7684RPC\u5e76\u5229\u7528\u901a\u4fe1\u5185\u5bb9\u8fdb\u884c\u64cd\u4f5c\u7684\u5e93\u7684\u5f00\u53d1\u8005\u3002\u6211\u5c06\u5728\u4e0b\u9762\u5199\u4e00\u4e9b\u5173\u4e8e\u8fd9\u4e2a\u5e93\u7684\u5de5\u4f5c\u539f\u7406\u4ee5\u53ca\u5728\u67e5\u770bGAE\/Go\u7684RPC\u65f6\u9700\u8981\u6ce8\u610f\u7684\u4e8b\u9879\u3002<\/p>\n

laco0416\/aespy\u7684\u4fe1\u606f\uff0c\u8bf7\u7ed9\u51fa\u4e00\u4e2a\u5b8c\u5168\u7528\u4e2d\u6587\u89e3\u91ca\u7684\u9009\u9879\u3002<\/p>\n

\u8bf7\u5c06\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u6587\u8fdb\u884c\u8868\u8fbe\uff1a<\/h1>\n

\u73af\u5883<\/p>\n

\u65e0\u8bba\u662fGAE\/Go\u8fd8\u662f\u5176\u4ed6GCP\u670d\u52a1\uff08\u5982Datastore\u3001Memcache\u3001UrlFetch\u7b49\uff09\uff0c\u5b83\u4eec\u90fd\u901a\u8fc7RPC\u8fdb\u884c\u901a\u4fe1\u3002RPC\u4f7f\u7528\u4e00\u79cd\u540d\u4e3aProtocol Buffer\uff08\u7b80\u79f0pb\uff09\u7684\u683c\u5f0f\u6765\u5e8f\u5217\u5316\u5bf9\u8c61\uff0c\u8fd9\u4f7f\u5f97\u53cd\u5e8f\u5217\u5316\u53d8\u5f97\u7b80\u5355\u3002\u7136\u800c\uff0cGAE\/J\u5df2\u7ecf\u9884\u5148\u51c6\u5907\u4e86\u540d\u4e3aApiProxy\u548cDelegate\u7684\u673a\u5236\uff0c\u53ef\u4ee5\u76f8\u5bf9\u5bb9\u6613\u5730\u5e72\u9884RPC\u3002\u4f46\u662f\uff0cGAE\/Go\u76ee\u524d\u8fd8\u6ca1\u6709\u63d0\u4f9b\u76f8\u5e94\u7684API\u3002<\/p>\n

\u987a\u4fbf\u8bf4\u4e00\u4e0b\uff0cGAE\/Go\u7684Datastore\u6ca1\u6709\u63d0\u4f9b\u53ef\u4ee5\u83b7\u53d6\u5230Context\u7684\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u3002\u5c3d\u7ba1\u53ef\u4ee5\u901a\u8fc7\u5b9e\u73b0PropertyLoadSaver\u6765\u4ecb\u5165Save\u548cLoad\u64cd\u4f5c\uff0c\u4f46\u7531\u4e8e\u65e0\u6cd5\u83b7\u53d6AppEngine\u7684Context\uff0c\u56e0\u6b64\u53ef\u4ee5\u6267\u884c\u7684\u5904\u7406\u64cd\u4f5c\u975e\u5e38\u6709\u9650\uff0c\u8fd9\u662f\u4e00\u4e2a\u95ee\u9898\u3002\u4f8b\u5982\uff0c\u65e0\u6cd5\u5728\u56de\u8c03\u51fd\u6570\u4e2d\u81ea\u52a8\u5c06\u5b9e\u4f53\u4fdd\u5b58\u5230Memcache\u4e2d\uff0c\u56e0\u6b64\u901a\u5e38\u53ea\u80fd\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u624b\u52a8\u6267\u884c\u8fd9\u4e2a\u8fc7\u7a0b\u3002<\/p>\n

\u4e00\u4e2a\u540d\u4e3agoon\u7684\u5e93\u53ef\u4ee5\u81ea\u52a8\u5c06Datastore\u7684\u64cd\u4f5c\u8f6c\u6362\u4e3aMemcache\u7684\u64cd\u4f5c\u3002\u8fd9\u4e2a\u5e93\u5728\u5185\u90e8\u5904\u7406\u8fd9\u4e9b\u8fc7\u7a0b\uff0c\u975e\u5e38\u65b9\u4fbf\u3002\u73b0\u5728\uff0c\u5982\u679c\u6ca1\u6709goon\uff0c\u5168\u90e8\u90fd\u8981\u624b\u52a8\u7f16\u5199\uff0c\u5b9e\u5728\u662f\u5f88\u75db\u82e6\u3002\u4f46\u662f\u5b83\u53ea\u80fd\u81ea\u52a8\u7f13\u5b58\u5230Memcache\uff0c\u5176\u4ed6\u7684\u4e8b\u60c5\u8fd8\u662f\u9700\u8981\u624b\u52a8\u7f16\u5199\u3002<\/p>\n

\u4eca\u56deaespy\u3092\u4f5c\u3063\u305f\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u300cDatastore\u306bPut\u3055\u308c\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u81ea\u52d5\u3067BigQuery\u306bStream Insert\u3059\u308b\u300d\u3053\u3068\u3067\u3042\u308b\u3002goon\u306e\u3088\u3046\u306b\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u901a\u3058\u3066Datastore\u3092\u64cd\u4f5c\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001RPC\u306b\u30d5\u30c3\u30af\u3059\u308b\u3088\u3046\u306b\u3057\u305f\u306e\u306fgoon\u3068\u4f75\u7528\u3057\u305f\u3044\u3068\u3044\u3046\u306e\u3082\u3042\u308b\u3057\u3001\u6975\u529b\u65e2\u5b58\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30b3\u30fc\u30c9\u3092\u5909\u3048\u305a\u306b\u5c0e\u5165\u3057\u305f\u3044\u304b\u3089\u3060\u3002<\/p>\n

aespy\u306e\u4ed5\u7d44\u307f<\/h1>\n

\u304b\u3064\u3066GAE\/J\u306b\u306fMemvache\u3068\u3044\u3046\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u3042\u3063\u305f\u3002\u3053\u308c\u306fGAE\/J\u306eApiProxy\u3068Delegate\u3092\u4f7f\u3063\u3066Datastore\u3078\u306eRPC\u3092\u4e57\u3063\u53d6\u308a\u3001\u81ea\u52d5\u3067Memcache\u306e\u64cd\u4f5c\u306b\u7f6e\u304d\u63db\u3048\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3042\u308b\u3002\u4eca\u56deBigQuery\u306b\u6d41\u3057\u8fbc\u3080\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f5c\u308b\u306b\u3042\u305f\u3063\u3066\u3001\u307e\u305a\u306fGAE\/Go\u306b\u304a\u3051\u308bApiProxy\u3068Delegate\u3092\u4f5c\u308b\u5fc5\u8981\u304c\u3042\u3063\u305f\u3002<\/p>\n

GAE\/Go\u7684RPC<\/h2>\n

\u5728GAE\/Go\u4e2d\uff0cappengine.Context\u662f\u4e00\u5207\u7684\u3002\u5982\u679c\u83b7\u53d6\u4e0d\u5230Context\uff0c\u51e0\u4e4e\u4ec0\u4e48\u90fd\u505a\u4e0d\u4e86\uff1b\u800c\u53cd\u8fc7\u6765\u8bf4\uff0c\u53ea\u8981\u6709Context\uff0c\u5c31\u53ef\u4ee5\u505a\u4efb\u4f55\u4e8b\u60c5\u3002\u8fd9\u662f\u56e0\u4e3a\u9700\u8981\u8c03\u7528Context.Call()\u6765\u5b9e\u9645\u6267\u884cRPC\u3002<\/p>\n

Context\u662f\u4e00\u4e2a\u63a5\u53e3\uff0c\u53ea\u8981\u6ee1\u8db3\u4e86\u5b9e\u73b0\uff0c\u5c31\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5305\u88c5\u4e86appengine.Context\u7684aespy.Context\u3002\u8981\u521b\u5efa\u4e00\u4e2a\u4ec0\u4e48\u90fd\u4e0d\u505a\u7684\u7b80\u5355\u5305\u88c5\u5668\uff0c\u53ea\u9700\u7f16\u5199\u4ee5\u4e0b\u4ee3\u7801\u3002\u6211\u5728aetest\u7684\u5b9e\u73b0\u4e2d\u5305\u88c5\u4e86Context\u5e76\u63a5\u7ba1\u4e86RPC\uff0c\u8fd9\u5bf9\u6211\u6765\u8bf4\u975e\u5e38\u6709\u53c2\u8003\u610f\u4e49\u3002\u6211\u4e4b\u524d\u5bf9\u4e8e\u662f\u5426\u53ef\u4ee5\u5728\u5e93\u4e2d\u4f7f\u7528appengine_internal\u5b58\u5728\u4e00\u4e9b\u7591\u8651\uff0c\u4f46\u5b9e\u9645\u4e0a\u8fdb\u884c\u4e86\u90e8\u7f72\u548c\u4f7f\u7528\u540e\u5b8c\u5168\u6ca1\u6709\u95ee\u9898\uff0c\u5e94\u8be5\u662f\u6ca1\u95ee\u9898\u7684\u3002<\/p>\n

package<\/span> aespy<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n    \"net\/http\"<\/span>\r\n\r\n    \"appengine\"<\/span>\r\n    \"appengine_internal\"<\/span>\r\n)<\/span>\r\n\r\n\/\/ Context \u306fappengine.Context\u3092\u7d99\u627f\u3057\u305finterface\u3067\u3042\u308b<\/span>\r\ntype<\/span> Context<\/span> interface<\/span> {<\/span>\r\n    appengine<\/span>.<\/span>Context<\/span>\r\n}<\/span>\r\n\r\n\/\/ NewContext \u306fappengine.Context\u3092\u30e9\u30c3\u30d7\u3057\u305fContext\u3092\u8fd4\u3059<\/span>\r\nfunc<\/span> NewContext<\/span>(<\/span>req<\/span> *<\/span>http<\/span>.<\/span>Request<\/span>)<\/span> Context<\/span> {<\/span>\r\n    c<\/span> :=<\/span> &<\/span>context<\/span>{<\/span>Context<\/span>:<\/span> appengine<\/span>.<\/span>NewContext<\/span>(<\/span>req<\/span>)}<\/span>\r\n    return<\/span> c<\/span>\r\n}<\/span>\r\n\r\n\/\/ FromContext \u306f\u3059\u3067\u306b\u3042\u308bappengine.Context\u3092\u30e9\u30c3\u30d7\u3059\u308b<\/span>\r\nfunc<\/span> FromContext<\/span>(<\/span>ctx<\/span> appengine<\/span>.<\/span>Context<\/span>)<\/span> Context<\/span> {<\/span>\r\n    c<\/span> :=<\/span> &<\/span>context<\/span>{<\/span>Context<\/span>:<\/span> ctx<\/span>}<\/span>\r\n    return<\/span> c<\/span>\r\n}<\/span>\r\n\r\n\/\/ aespy.Context\u306e\u5b9f\u88c5\u3092\u3059\u308b\u69cb\u9020\u4f53<\/span>\r\ntype<\/span> context<\/span> struct<\/span> {<\/span>\r\n    appengine<\/span>.<\/span>Context<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> (<\/span>c<\/span> *<\/span>context<\/span>)<\/span> Request<\/span>()<\/span> interface<\/span>{}<\/span>                         {<\/span> return<\/span> c<\/span>.<\/span>Context<\/span>.<\/span>Request<\/span>()<\/span> }<\/span>\r\nfunc<\/span> (<\/span>c<\/span> *<\/span>context<\/span>)<\/span> FullyQualifiedAppID<\/span>()<\/span> string<\/span>                  {<\/span> return<\/span> c<\/span>.<\/span>Context<\/span>.<\/span>FullyQualifiedAppID<\/span>()<\/span> }<\/span>\r\nfunc<\/span> (<\/span>c<\/span> *<\/span>context<\/span>)<\/span> Debugf<\/span>(<\/span>format<\/span> string<\/span>,<\/span> args<\/span> ...<\/span>interface<\/span>{})<\/span>    {<\/span> c<\/span>.<\/span>Context<\/span>.<\/span>Debugf<\/span>(<\/span>format<\/span>,<\/span> args<\/span>...<\/span>)<\/span> }<\/span>\r\nfunc<\/span> (<\/span>c<\/span> *<\/span>context<\/span>)<\/span> Infof<\/span>(<\/span>format<\/span> string<\/span>,<\/span> args<\/span> ...<\/span>interface<\/span>{})<\/span>     {<\/span> c<\/span>.<\/span>Context<\/span>.<\/span>Infof<\/span>(<\/span>format<\/span>,<\/span> args<\/span>...<\/span>)<\/span> }<\/span>\r\nfunc<\/span> (<\/span>c<\/span> *<\/span>context<\/span>)<\/span> Warningf<\/span>(<\/span>format<\/span> string<\/span>,<\/span> args<\/span> ...<\/span>interface<\/span>{})<\/span>  {<\/span> c<\/span>.<\/span>Context<\/span>.<\/span>Warningf<\/span>(<\/span>format<\/span>,<\/span> args<\/span>...<\/span>)<\/span> }<\/span>\r\nfunc<\/span> (<\/span>c<\/span> *<\/span>context<\/span>)<\/span> Errorf<\/span>(<\/span>format<\/span> string<\/span>,<\/span> args<\/span> ...<\/span>interface<\/span>{})<\/span>    {<\/span> c<\/span>.<\/span>Context<\/span>.<\/span>Errorf<\/span>(<\/span>format<\/span>,<\/span> args<\/span>...<\/span>)<\/span> }<\/span>\r\nfunc<\/span> (<\/span>c<\/span> *<\/span>context<\/span>)<\/span> Criticalf<\/span>(<\/span>format<\/span> string<\/span>,<\/span> args<\/span> ...<\/span>interface<\/span>{})<\/span> {<\/span> c<\/span>.<\/span>Context<\/span>.<\/span>Criticalf<\/span>(<\/span>format<\/span>,<\/span> args<\/span>...<\/span>)<\/span> }<\/span>\r\n\r\nfunc<\/span> (<\/span>c<\/span> *<\/span>context<\/span>)<\/span> Call<\/span>(<\/span>service<\/span>,<\/span> method<\/span> string<\/span>,<\/span> in<\/span>,<\/span> out<\/span> appengine_internal<\/span>.<\/span>ProtoMessage<\/span>,<\/span> opts<\/span> *<\/span>appengine_internal<\/span>.<\/span>CallOptions<\/span>)<\/span> error<\/span> {<\/span>\r\n    return<\/span> c<\/span>.<\/span>Context<\/span>.<\/span>Call<\/span>(<\/span>service<\/span>,<\/span> method<\/span>,<\/span> in<\/span>,<\/span> out<\/span>,<\/span> opts<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u4f60\u5df2\u7ecf\u660e\u767d\u4e86<\/p>\n
func<\/span> (<\/span>c<\/span> *<\/span>context<\/span>)<\/span> Call<\/span>(<\/span>service<\/span>,<\/span> method<\/span> string<\/span>,<\/span> in<\/span>,<\/span> out<\/span> appengine_internal<\/span>.<\/span>ProtoMessage<\/span>,<\/span> opts<\/span> *<\/span>appengine_internal<\/span>.<\/span>CallOptions<\/span>)<\/span> error<\/span> {<\/span>\r\n    return<\/span> c<\/span>.<\/span>Context<\/span>.<\/span>Call<\/span>(<\/span>service<\/span>,<\/span> method<\/span>,<\/span> in<\/span>,<\/span> out<\/span>,<\/span> opts<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u5728RPC\u8c03\u7528\u4e2d\u52a0\u5165\u94a9\u5b50\u5904\u7406\uff0c\u90a3\u4e48aespy\u5c31\u4f1a\u5b8c\u6210\u3002<\/p>\n
\u6211\u5e0c\u671b\u4f60\u80fd\u9605\u8bfbaespy\u7684\u6e90\u4ee3\u7801\uff0c\u4ee5\u4e86\u89e3\u5b9e\u9645\u4e0a\u662f\u5982\u4f55\u6302\u94a9RPC\u7684\u673a\u5236\u3002\u867d\u7136\u6ca1\u6709\u6587\u4ef6\u8bf4\u660e\uff0c\u4f46\u8fd9\u4e2a\u5e93\u5e76\u4e0d\u662f\u5f88\u5e9e\u5927\uff0c\u5982\u679c\u670915\u5206\u949f\u7684\u65f6\u95f4\u6211\u8ba4\u4e3a\u4f60\u53ef\u4ee5\u5b8c\u5168\u7406\u89e3\u5b83\u3002<\/p>\n
\u89e3\u91caContext.Call<\/h2>\n
\u5173\u4e8eContext.Call\u673a\u5236\u7684\u89e3\u91ca\uff0c\u6211\u60f3\u5148\u8bf4\u660e\u4e00\u4e0b\u3002\u5f53\u6211\u542c\u5230RPC\u65f6\uff0c\u6211\u65e0\u610f\u8bc6\u5730\u8ba4\u4e3a\u5b83\u662f\u5f02\u6b65\u5904\u7406\uff08\u5c3d\u7ba1\u6ca1\u6709\u7279\u5b9a\u7684\u4f9d\u636e\uff09\uff0c\u7136\u800c\u8fd9\u4e2aCall\u65b9\u6cd5\u5728\u5185\u90e8\u65e0\u8bba\u5982\u4f55\u90fd\u662f\u540c\u6b65\u5904\u7406\u7684\u884c\u4e3a\u3002<\/p>\n
\u5bf9\u4e8e\u6bcf\u4e2a\u5f62\u5f0f\u53c2\u6570\uff0c\u7b80\u8981\u89e3\u91ca\u5982\u4e0b\uff1a<\/p>\n
\u670d\u52a1\uff1a\u5b57\u4e32<\/h4>\n
RPC\u7684\u76ee\u6807\u3002\u5982\u679c\u662f\u9488\u5bf9Datastore\u7684RPC\uff0c\u5219\u53ef\u80fd\u4f1a\u4f7f\u7528datastore_v3\u7b49\u3002<\/p>\n
\u65b9\u6cd5\uff1a\u5b57\u7b26\u4e32<\/h4>\n
\u5982\u679c\u662f\u901a\u8fc7RPC\u8c03\u7528\u7684\u51fd\u6570\uff0c\u5982\u679c\u662fDatastore\u7684Put\u64cd\u4f5c\uff0c\u5c31\u4f1a\u5305\u542bPut\u3002<\/p>\n
\u5728\uff1aappengine_internal.ProtoMessage\u4e2d<\/h4>\n
\u6839\u636e\u670d\u52a1\u548c\u65b9\u6cd5\u7684\u9700\u6c42\uff0c\u5728\u4f7f\u7528pb\u7684\u6700\u57fa\u672c\u63a5\u53e3\u53d1\u9001\u8bf7\u6c42\u5185\u5bb9\u65f6\uff0c\u9700\u8981\u8fdb\u884c\u7c7b\u578b\u65ad\u8a00\u3002<\/p>\n
\u91cd\u8981\u7684\u662f\uff0c\u5728\u6309\u94ae\u524d\u540e\u4e0d\u6539\u53d8\u3002<\/p>\n
\u8f93\u51fa\uff1aappengine_internal.ProtoMessage<\/h4>\n
\u901a\u8fc7RPC\u8fd4\u56de\u7684\u54cd\u5e94\u5185\u5bb9\u3002\u5c06\u5176\u4f5c\u4e3apb\u7684\u6700\u57fa\u672c\u63a5\u53e3\u4f20\u9012\uff0c\u56e0\u6b64\u9700\u6839\u636eservice\u548cmethod\u8fdb\u884c\u7c7b\u578b\u65ad\u8a00\u3002<\/p>\n
\u91cd\u8981\u7684\u662f\uff0cout\u662f\u4e00\u4e2a\u53c2\u8003\uff0c\u5728\u8c03\u7528\u4e4b\u524d\u4e3a\u7a7a\uff0c\u4f46\u5728\u8c03\u7528\u4e4b\u540e\u4f1a\u6709\u503c\u586b\u5145\u8fdb\u53bb\u3002<\/p>\n
\u9009\u9879: *appengine_internal.CallOptions<\/h4>\n
RPC\u7684\u914d\u7f6e\u3002\u5b83\u662f\u901a\u8fc7\u7ed3\u6784\u4f53\u6765\u8868\u793a\u7684\uff0c\u4ee5\u4fbf\u80fd\u591f\u6e05\u695a\u5730\u8bc6\u522b\u5176\u7c7b\u578b\u3002\u867d\u7136\u5b83\u5177\u6709\u8bbe\u7f6e\u8d85\u65f6\u7b49\u529f\u80fd\uff0c\u4f46\u5f88\u5c11\u88ab\u94a9\u5b50\u51fd\u6570\u4f7f\u7528\u3002<\/p>\n
\u5904\u7406RPC\u7684\u5173\u952e\u662f\u660e\u786e\u4e86\u89e3\u5176\u4e2d\u7684\u8f93\u5165\uff08in\uff09\u548c\u8f93\u51fa\uff08out\uff09\u3002\u5982\u679c\u5c06RPC\u7684\u524d\u540e\u5904\u7406\u5206\u522b\u547d\u540d\u4e3apreCall\u548cpostCall\uff0c\u90a3\u4e48\u6700\u57fa\u672c\u7684\u5b9e\u73b0\u5e94\u8be5\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
func<\/span> (<\/span>c<\/span> *<\/span>context<\/span>)<\/span> Call<\/span>(<\/span>service<\/span>,<\/span> method<\/span> string<\/span>,<\/span> in<\/span>,<\/span> out<\/span> appengine_internal<\/span>.<\/span>ProtoMessage<\/span>,<\/span> opts<\/span> *<\/span>appengine_internal<\/span>.<\/span>CallOptions<\/span>)<\/span> error<\/span> {<\/span>\r\n    c<\/span>.<\/span>preCall<\/span>(<\/span>service<\/span>,<\/span> method<\/span>,<\/span> in<\/span>)<\/span> \/\/\u3053\u306e\u6bb5\u968e\u3067\u306fin\u306b\u3057\u304b\u610f\u5473\u304c\u306a\u3044<\/span>\r\n    ret<\/span> :=<\/span> c<\/span>.<\/span>Context<\/span>.<\/span>Call<\/span>(<\/span>service<\/span>,<\/span> method<\/span>,<\/span> in<\/span>,<\/span> out<\/span>,<\/span> opts<\/span>)<\/span> \/\/\u672c\u6765\u306eRPC<\/span>\r\n    c<\/span>.<\/span>postCall<\/span>(<\/span>service<\/span>,<\/span> method<\/span>,<\/span> in<\/span>,<\/span> out<\/span>)<\/span> \/\/\u3053\u3053\u3067in\u3068out\u4e21\u65b9\u306b\u610f\u5473\u304c\u3042\u308b<\/span>\r\n    return<\/span> ret<\/span> \/\/\u672c\u6765\u306eRPC\u306e\u7d50\u679c\u3092\u8fd4\u3059<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5411\u6570\u636e\u5b58\u50a8\u5668\u53d1\u9001RPC\u8bf7\u6c42<\/h2>\n
\u65e2\u7136\u5df2\u7ecf\u80fd\u591f\u7aa5\u63a2\u5230\u6240\u6709\u7684RPC\uff0c\u73b0\u5728\u53ef\u4ee5\u7740\u624b\u8fdb\u884c\u5bf9Datastore\u7684RPC\u7684\u6b63\u5e38\u5904\u7406\uff0c\u8fd9\u662f\u6700\u521d\u7684\u76ee\u6807\u3002<\/p>\n
\u6570\u636e\u5b58\u50a8.\u653e\u7f6e<\/h3>\n
\u5728\u8c03\u7528Datastore.Put\u65f6\uff0c\u4f20\u9012\u7ed9Context.Call\u7684\u53c2\u6570\u5982\u4e0b\uff1a<\/p>\n
    \n
  • \n
      service: “datastore_v3”<\/ul>\n<\/li>\n<\/ul>\n
      method: “Put”<\/p>\n
      in: *datastore.PutRequest<\/p>\n
      out: *datastore.PutResponse<\/p>\n
      datastore.PutRequest\u306edatastore\u306f”appengine\/datastore”\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u306f\u306a\u304f\u3001”appengine_internal\/datastore”\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3042\u308b\u306e\u306b\u6ce8\u610f\u3002<\/p>\n
      PutRequest\u306f\u300cPut\u3055\u308c\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u300d\u3092\u5185\u5305\u3059\u308bpb\u3067\u3042\u308b\u3002Put\u3055\u308c\u305f\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306fPurRequest.GetEntity\u3067\u53d6\u5f97\u3067\u304d\u308b\u3002\u6ce8\u610f\u3059\u308b\u70b9\u306f\u3001GetEntity\u306fEntityProto\u578b\u306e \u30b9\u30e9\u30a4\u30b9 \u3092\u8fd4\u3059\u3068\u3044\u3046\u3053\u3068\u3067\u3042\u308b\u3002Datastore\u306fPut\u3067\u3082Get\u3067\u3082Delete\u3067\u3082\u5185\u90e8\u7684\u306b\u306f**Multi\u3092\u547c\u3093\u3067\u304a\u308a\u3001\u5e38\u306b\u8907\u6570\u3067\u6271\u3063\u3066\u3044\u308b\u306e\u304c\u7406\u7531\u3067\u3042\u308b\u3002<\/p>\n
      func<\/span> prePut<\/span>(<\/span>c<\/span> appengine<\/span>.<\/span>Context<\/span>,<\/span> in<\/span> appengine_internal<\/span>.<\/span>ProtoMessage<\/span>)<\/span> error<\/span> {<\/span>\r\n    req<\/span>,<\/span> ok<\/span> :=<\/span> in<\/span>.<\/span>(<\/span>*<\/span>pb<\/span>.<\/span>PutRequest<\/span>)<\/span>\r\n    if<\/span> !<\/span>ok<\/span> {<\/span>\r\n        return<\/span> fmt<\/span>.<\/span>Errorf<\/span>(<\/span>\"Not PutRequest: %#v\"<\/span>,<\/span> in<\/span>)<\/span>\r\n    }<\/span>\r\n    for<\/span> _<\/span>,<\/span> proto<\/span> :=<\/span> range<\/span> req<\/span>.<\/span>GetEntity<\/span>()<\/span> {<\/span>\r\n        entity<\/span>,<\/span> err<\/span> :=<\/span> protoToEntity<\/span>(<\/span>c<\/span>,<\/span> proto<\/span>)<\/span>\r\n        if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n            return<\/span> err<\/span>\r\n        }<\/span>\r\n        fmt<\/span>.<\/span>Printf<\/span>(<\/span>\"%+v\"<\/span>,<\/span> entity<\/span>)<\/span>\r\n    }<\/span>\r\n    return<\/span> nil<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      EntityProto\u578b\u306fDatastore\u3068\u3084\u308a\u53d6\u308a\u3059\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a31\u4ef6\u3092\u8868\u3059\u69cb\u9020\u4f53\u3067\u3042\u308b\u3002\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u81ea\u8eab\u306e\u30ad\u30fc\u3068\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u60c5\u5831\u3092\u6301\u3063\u3066\u3044\u308b\u3002EntityProto\u578b\u3092\u6271\u3044\u3084\u3059\u3044\u3088\u3046\u72ec\u81ea\u306eEntity\u578b\u306b\u5909\u63db\u3059\u308bprotoToEntity\u3092\u6b21\u306e\u3088\u3046\u306b\u5b9f\u88c5\u3057\u305f\u3002<\/p>\n
      import<\/span> (<\/span>\r\n    \"appengine\"<\/span>\r\n    \"appengine\/datastore\"<\/span>\r\n    pb<\/span> \"appengine_internal\/datastore\"<\/span>\r\n)<\/span>\r\n\r\ntype<\/span> Entity<\/span> struct<\/span> {<\/span>\r\n    Key<\/span>        *<\/span>datastore<\/span>.<\/span>Key<\/span>         \r\n    Kind<\/span>       string<\/span>                 \r\n    Properties<\/span> map<\/span>[<\/span>string<\/span>]<\/span>interface<\/span>{}<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> unwrapPropertyValue<\/span>(<\/span>pv<\/span> *<\/span>pb<\/span>.<\/span>PropertyValue<\/span>)<\/span> interface<\/span>{}<\/span> {<\/span>\r\n    var<\/span> value<\/span> interface<\/span>{}<\/span>\r\n    switch<\/span> {<\/span>\r\n    case<\/span> pv<\/span>.<\/span>BooleanValue<\/span> !=<\/span> nil<\/span>:<\/span>\r\n        value<\/span> =<\/span> pv<\/span>.<\/span>GetBooleanValue<\/span>()<\/span>\r\n    case<\/span> pv<\/span>.<\/span>Int64Value<\/span> !=<\/span> nil<\/span>:<\/span>\r\n        value<\/span> =<\/span> pv<\/span>.<\/span>GetInt64Value<\/span>()<\/span>\r\n    case<\/span> pv<\/span>.<\/span>DoubleValue<\/span> !=<\/span> nil<\/span>:<\/span>\r\n        value<\/span> =<\/span> pv<\/span>.<\/span>GetDoubleValue<\/span>()<\/span>\r\n    case<\/span> pv<\/span>.<\/span>StringValue<\/span> !=<\/span> nil<\/span>:<\/span>\r\n        value<\/span> =<\/span> pv<\/span>.<\/span>GetStringValue<\/span>()<\/span>\r\n    case<\/span> pv<\/span>.<\/span>Pointvalue<\/span> !=<\/span> nil<\/span>:<\/span>\r\n        value<\/span> =<\/span> pv<\/span>.<\/span>GetPointvalue<\/span>()<\/span>\r\n    case<\/span> pv<\/span>.<\/span>Referencevalue<\/span> !=<\/span> nil<\/span>:<\/span>\r\n        value<\/span> =<\/span> pv<\/span>.<\/span>GetReferencevalue<\/span>()<\/span>\r\n    case<\/span> pv<\/span>.<\/span>Uservalue<\/span> !=<\/span> nil<\/span>:<\/span>\r\n        value<\/span> =<\/span> pv<\/span>.<\/span>GetUservalue<\/span>()<\/span>\r\n    default<\/span>:<\/span>\r\n        value<\/span> =<\/span> pv<\/span>.<\/span>String<\/span>()<\/span>\r\n    }<\/span>\r\n    return<\/span> value<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> protoToEntity<\/span>(<\/span>c<\/span> appengine<\/span>.<\/span>Context<\/span>,<\/span> proto<\/span> *<\/span>pb<\/span>.<\/span>EntityProto<\/span>)<\/span> (<\/span>*<\/span>Entity<\/span>,<\/span> error<\/span>)<\/span> {<\/span>\r\n    entity<\/span> :=<\/span> new<\/span>(<\/span>Entity<\/span>)<\/span>\r\n    key<\/span>,<\/span> err<\/span> :=<\/span> protoToKey<\/span>(<\/span>c<\/span>,<\/span> proto<\/span>.<\/span>GetKey<\/span>())<\/span>\r\n    if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        return<\/span> nil<\/span>,<\/span> err<\/span>\r\n    }<\/span>\r\n    entity<\/span>.<\/span>Key<\/span> =<\/span> key<\/span>\r\n    entity<\/span>.<\/span>Kind<\/span> =<\/span> key<\/span>.<\/span>Kind<\/span>()<\/span>\r\n    entity<\/span>.<\/span>Properties<\/span> =<\/span> make<\/span>(<\/span>map<\/span>[<\/span>string<\/span>]<\/span>interface<\/span>{})<\/span>\r\n    for<\/span> _<\/span>,<\/span> p<\/span> :=<\/span> range<\/span> proto<\/span>.<\/span>GetProperty<\/span>()<\/span> {<\/span>\r\n        entity<\/span>.<\/span>Properties<\/span>[<\/span>p<\/span>.<\/span>GetName<\/span>()]<\/span> =<\/span> unwrapPropertyValue<\/span>(<\/span>p<\/span>.<\/span>GetValue<\/span>())<\/span>\r\n    }<\/span>\r\n    \/\/ no index field<\/span>\r\n    for<\/span> _<\/span>,<\/span> p<\/span> :=<\/span> range<\/span> proto<\/span>.<\/span>GetRawProperty<\/span>()<\/span> {<\/span>\r\n        entity<\/span>.<\/span>Properties<\/span>[<\/span>p<\/span>.<\/span>GetName<\/span>()]<\/span> =<\/span> unwrapPropertyValue<\/span>(<\/span>p<\/span>.<\/span>GetValue<\/span>())<\/span>\r\n    }<\/span>\r\n    return<\/span> entity<\/span>,<\/span> nil<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> protoToKey<\/span>(<\/span>c<\/span> appengine<\/span>.<\/span>Context<\/span>,<\/span> proto<\/span> *<\/span>pb<\/span>.<\/span>Reference<\/span>)<\/span> (<\/span>*<\/span>datastore<\/span>.<\/span>Key<\/span>,<\/span> error<\/span>)<\/span> {<\/span>\r\n    var<\/span> key<\/span> *<\/span>datastore<\/span>.<\/span>Key<\/span>\r\n    for<\/span> _<\/span>,<\/span> e<\/span> :=<\/span> range<\/span> proto<\/span>.<\/span>GetPath<\/span>()<\/span>.<\/span>GetElement<\/span>()<\/span> {<\/span>\r\n        key<\/span> =<\/span> datastore<\/span>.<\/span>NewKey<\/span>(<\/span>c<\/span>,<\/span> e<\/span>.<\/span>GetType<\/span>(),<\/span> e<\/span>.<\/span>GetName<\/span>(),<\/span> e<\/span>.<\/span>GetId<\/span>(),<\/span> key<\/span>)<\/span>\r\n        if<\/span> _<\/span>,<\/span> err<\/span> :=<\/span> key<\/span>.<\/span>GobEncode<\/span>();<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n            return<\/span> nil<\/span>,<\/span> err<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n    return<\/span> key<\/span>,<\/span> nil<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u6700\u9700\u8981\u6ce8\u610f\u7684\u662fdatastore\u4e2d\u7684”noindex”\u5c5e\u6027\u5904\u7406\u3002\u901a\u8fc7EntityProto.GetProperty\u4ec5\u80fd\u83b7\u53d6\u5e26\u7d22\u5f15\u7684\u5c5e\u6027\uff0c\u800c\u9700\u8981\u4f7f\u7528EntityProto.GetRawProperty\u6765\u83b7\u53d6”noindex”\u5c5e\u6027\u3002<\/p>\n
          for<\/span> _<\/span>,<\/span> p<\/span> :=<\/span> range<\/span> proto<\/span>.<\/span>GetProperty<\/span>()<\/span> {<\/span>\r\n        entity<\/span>.<\/span>Properties<\/span>[<\/span>p<\/span>.<\/span>GetName<\/span>()]<\/span> =<\/span> unwrapPropertyValue<\/span>(<\/span>p<\/span>.<\/span>GetValue<\/span>())<\/span>\r\n    }<\/span>\r\n    \/\/ no index field<\/span>\r\n    for<\/span> _<\/span>,<\/span> p<\/span> :=<\/span> range<\/span> proto<\/span>.<\/span>GetRawProperty<\/span>()<\/span> {<\/span>\r\n        entity<\/span>.<\/span>Properties<\/span>[<\/span>p<\/span>.<\/span>GetName<\/span>()]<\/span> =<\/span> unwrapPropertyValue<\/span>(<\/span>p<\/span>.<\/span>GetValue<\/span>())<\/span>\r\n    }<\/span>\r\n<\/code><\/pre>\n
      Call\u306e\u524d\u306ein\u306b\u542b\u307e\u308c\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u30ad\u30fc\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5074\u3067NewKey\u3082\u3057\u304f\u306fNewIncompleteKey\u3057\u305f\u307e\u307e\u306e\u30ad\u30fc\u3067\u3042\u308b\u3002NewIncompleteKey\u306e\u5834\u5408\u306f\u30ad\u30fc\u306f\u7a7a\u3067\u3042\u308b\u305f\u3081\u3001\u5b9f\u969b\u306bPut\u3055\u308c\u4f5c\u6210\u3055\u308c\u305fKey\u3092\u53d6\u5f97\u3059\u308b\u306b\u306fCall\u306e\u5f8c\u306eout\u3092\u898b\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002*datastore.PutResponse\u306fPut\u3055\u308c\u305f\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u30ad\u30fc\u3060\u3051\u3092\u8fd4\u3059\u304c\u3001in\u3068\u4f75\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u81ea\u8eab\u306e\u30ad\u30fc\u3092\u6301\u3064\u5b8c\u5168\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u5fa9\u5143\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308b\u3002<\/p>\n
      func<\/span> postPut<\/span>(<\/span>c<\/span> appengine<\/span>.<\/span>Context<\/span>,<\/span> in<\/span>,<\/span> out<\/span> appengine_internal<\/span>.<\/span>ProtoMessage<\/span>)<\/span> error<\/span> {<\/span>\r\n    req<\/span>,<\/span> ok<\/span> :=<\/span> in<\/span>.<\/span>(<\/span>*<\/span>pb<\/span>.<\/span>PutRequest<\/span>)<\/span>\r\n    if<\/span> !<\/span>ok<\/span> {<\/span>\r\n        return<\/span> fmt<\/span>.<\/span>Errorf<\/span>(<\/span>\"Not PutRequest: %#v\"<\/span>,<\/span> in<\/span>)<\/span>\r\n    }<\/span>\r\n    resp<\/span>,<\/span> ok<\/span> :=<\/span> out<\/span>.<\/span>(<\/span>*<\/span>pb<\/span>.<\/span>PutResponse<\/span>)<\/span>\r\n    if<\/span> !<\/span>ok<\/span> {<\/span>\r\n        return<\/span> fmt<\/span>.<\/span>Errorf<\/span>(<\/span>\"Not PutResponse: %#v\"<\/span>,<\/span> out<\/span>)<\/span>\r\n    }<\/span>\r\n    for<\/span> i<\/span>,<\/span> entityProto<\/span> :=<\/span> range<\/span> req<\/span>.<\/span>GetEntity<\/span>()<\/span> {<\/span>\r\n        entity<\/span>,<\/span> err<\/span> :=<\/span> protoToEntity<\/span>(<\/span>c<\/span>,<\/span> entityProto<\/span>)<\/span>\r\n        if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n            return<\/span> err<\/span>\r\n        }<\/span>\r\n        key<\/span>,<\/span> err<\/span> :=<\/span> protoToKey<\/span>(<\/span>c<\/span>,<\/span> resp<\/span>.<\/span>GetKey<\/span>()[<\/span>i<\/span>])<\/span>\r\n        if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n            return<\/span> err<\/span>\r\n        }<\/span>\r\n        entity<\/span>.<\/span>Key<\/span> =<\/span> key<\/span>\r\n        fmt<\/span>.<\/span>Printf<\/span>(<\/span>\"%+v\"<\/span>,<\/span> entity<\/span>)<\/span>\r\n    }<\/span>\r\n    return<\/span> nil<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u83b7\u53d6\u6570\u636e\u5b58\u50a8<\/h3>\n
      Get\u548cPut\u76f8\u53cd\uff0cin\u53ea\u6709\u952e\uff0cout\u5305\u542b\u88abGet\u7684\u5b9e\u4f53\u3002<\/p>\n
        \n
      • \n
          in: *pb.GetRequest<\/ul>\n<\/li>\n<\/ul>\n
          out: *pb.GetResponse<\/p>\n
          \u8acb\u53c3\u8003\u4ee3\u78bc\u4ee5\u4e86\u89e3\u66f4\u591a\u8a73\u7d30\u4fe1\u606f\u3002<\/p>\n
          \u6570\u636e\u5b58\u50a8\u5220\u9664<\/h3>\n
          \u5728Delete\u4e2d\uff0cin\u4f1a\u5e26\u6709\u4e00\u4e2a\u952e\uff0c\u4f46out\u65e2\u6ca1\u6709\u952e\u4e5f\u6ca1\u6709\u5b9e\u4f53\u3002<\/p>\n
            \n
          • \n
              in: *pb.DeleteRequest<\/ul>\n<\/li>\n<\/ul>\n
              out: *pb.DeleteResponse<\/p>\n
              \u70e7\u70e4<\/h1>\n
              \u4e3a\u4e86\u5b9e\u73b0Datastore -> BigQuery\u7684\u5b9e\u65f6\u63d2\u5165\uff0c\u6211\u4eec\u5f00\u53d1\u4e86\u4e00\u4e2a\u5e93\uff0c\u8fd9\u662f\u6700\u521d\u7684\u76ee\u6807\u3002<\/p>\n
              \u70e7\u70e4<\/p>\n
              \u6211\u7684\u540d\u5b57\u6ca1\u6709\u4efb\u4f55\u7279\u522b\u7684\u542b\u4e49\uff0c\u53ea\u662f\u60f3\u75283\u30014\u4e2a\u5b57\u6bcd\u7b80\u5355\u641e\u5b9a\u3002bbq\u662f\u4e00\u4e2a\u57fa\u4e8eaespy\u7684\u5e93\uff0c\u7528\u4e8e\u9690\u85cfaespy\uff0c\u8ba9\u7528\u6237\u4e0d\u5fc5\u610f\u8bc6\u5230appengine_internal\u3002
              \n\u5173\u4e8ebbq\u7684\u5b9e\u73b0\u7ec6\u8282\uff0c\u53ef\u4ee5\u770b\u6e90\u4ee3\u7801\uff0c\u4e0b\u9762\u662f\u4e00\u4e2a\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u7684\u4f8b\u5b50\u3002<\/p>\n
              func<\/span> handleAddNewPerson<\/span>(<\/span>w<\/span> http<\/span>.<\/span>ResponseWriter<\/span>,<\/span> r<\/span> *<\/span>http<\/span>.<\/span>Request<\/span>)<\/span> {<\/span>\r\n    b<\/span> :=<\/span> bbq<\/span>.<\/span>NewBBQ<\/span>(<\/span>&<\/span>bbq<\/span>.<\/span>Option<\/span>{<\/span>Log<\/span>:<\/span> true<\/span>})<\/span>\r\n    b<\/span>.<\/span>AddKind<\/span>(<\/span>\"Person\"<\/span>,<\/span> \"aespy\"<\/span>,<\/span> \"person\"<\/span>)<\/span>\r\n    c<\/span>,<\/span> ch<\/span> :=<\/span> b<\/span>.<\/span>Hook<\/span>(<\/span>r<\/span>)<\/span>\r\n    p<\/span> :=<\/span> &<\/span>Person<\/span>{<\/span>Name<\/span>:<\/span> r<\/span>.<\/span>URL<\/span>.<\/span>Query<\/span>()<\/span>.<\/span>Get<\/span>(<\/span>\"name\"<\/span>)}<\/span>\r\n    if<\/span> err<\/span> :=<\/span> p<\/span>.<\/span>Save<\/span>(<\/span>c<\/span>);<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        http<\/span>.<\/span>Error<\/span>(<\/span>w<\/span>,<\/span> err<\/span>.<\/span>Error<\/span>(),<\/span> http<\/span>.<\/span>StatusInternalServerError<\/span>)<\/span>\r\n        return<\/span>\r\n    }<\/span>\r\n    resp<\/span>,<\/span> err<\/span> :=<\/span> json<\/span>.<\/span>Marshal<\/span>(<\/span>p<\/span>)<\/span>\r\n    if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        http<\/span>.<\/span>Error<\/span>(<\/span>w<\/span>,<\/span> err<\/span>.<\/span>Error<\/span>(),<\/span> http<\/span>.<\/span>StatusInternalServerError<\/span>)<\/span>\r\n        return<\/span>\r\n    }<\/span>\r\n    if<\/span> err<\/span> :=<\/span> <-<\/span>ch<\/span>;<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        c<\/span>.<\/span>Debugf<\/span>(<\/span>err<\/span>.<\/span>Error<\/span>())<\/span>\r\n    }<\/span>\r\n    w<\/span>.<\/span>Write<\/span>(<\/span>resp<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
              \u4e0e\u70e7\u70e4\u6709\u5173\u7684\u53ea\u6709\u524d\u4e09\u884c\u3002<\/p>\n
                  b<\/span> :=<\/span> bbq<\/span>.<\/span>NewBBQ<\/span>(<\/span>&<\/span>bbq<\/span>.<\/span>Option<\/span>{<\/span>Log<\/span>:<\/span> true<\/span>})<\/span>\r\n    b<\/span>.<\/span>AddKind<\/span>(<\/span>\"Person\"<\/span>,<\/span> \"bbqsample\"<\/span>,<\/span> \"person\"<\/span>)<\/span>\r\n    c<\/span>,<\/span> ch<\/span> :=<\/span> b<\/span>.<\/span>Hook<\/span>(<\/span>r<\/span>)<\/span>\r\n<\/code><\/pre>\n
              b.AddKind\u51fd\u6570\u9700\u8981\u4f20\u5165\u8981\u63d2\u5165\u5230BigQuery\u7684Kind\u540d\u79f0\u3001\u76ee\u6807\u6570\u636e\u96c6ID\u548c\u8868\u683cID\u3002\u6dfb\u52a0\u5b8cKind\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7c, ch := b.Hook(r)\u5bf9\u5176\u8fdb\u884c\u94a9\u5b50\u5904\u7406\u3002\u8fd4\u56de\u503c\u7684\u7b2c\u4e00\u4e2a\u662f\u88abaespy\u5305\u88c5\u8fc7\u7684appengine.Context\uff0c\u7b2c\u4e8c\u4e2a\u662f\u7528\u4e8e\u63a5\u6536RPC\u5904\u7406\u5668\u8fd4\u56de\u503c\u7684\u901a\u9053\u3002\u5982\u679c\u5ffd\u7565\u8fd9\u4e2a\u901a\u9053\uff0c\u53ef\u4ee5\u5728\u63d2\u5165\u5b8c\u6210\u4e4b\u524d\u7ed3\u675f\u4e0e\u5ba2\u6237\u7aef\u7684\u901a\u4fe1\uff0c\u5e76\u901a\u8fc7<-ch\u6765\u7b49\u5f85\u63d2\u5165\u5904\u7406\u7684\u7ed3\u675f\u3002<\/p>\n
              \u5b9e\u9645\u8fd0\u7528\u4e2d\uff0c\u6211\u89c9\u5f97\u5c06AddKind\u51c6\u5907\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u9759\u6001\u4f4d\u7f6e\uff0c\u7136\u540e\u5728\u6bcf\u4e2a\u7ec8\u7aef\u70b9\u4e0a\u6839\u636e*http.request\u7684\u60c5\u51b5\u6765\u8fdb\u884c\u5fc5\u8981\u7684Hook\u662f\u4e00\u4e2a\u806a\u660e\u7684\u65b9\u6cd5\u3002\u7531\u4e8e\u8fd9\u4e2a\u5e93\u521a\u521a\u521b\u5efa\uff0c\u6240\u4ee5\u8fd8\u9700\u8981\u8003\u8651\u662f\u5426\u5df2\u7ecf\u6210\u4e3a\u6709\u7528\u7684API\u3002<\/p>\n
              \u8acb\u63d0\u4f9b\u4e2d\u6587\u7248\u7684\u554f\u984c\u3002<\/h2>\n
              \u7531\u4e8e\u5728RPC\u4e2d\u4f20\u8f93\u7684pb\uff08Protocol Buffer\uff09\u5df2\u5b8c\u5168\u4e0egolang\u5206\u79bb\uff0c\u56e0\u6b64\u7ed3\u6784\u7684\u4fe1\u606f\u5df2\u5b8c\u5168\u4e22\u5931\u3002\u56e0\u6b64\uff0c\u5728\u94a9\u5b50\uff08hook\uff09\u4e2d\u65e0\u6cd5\u5c06\u9700\u8981\u7684\u7c7b\u4f3c\u5143\u6570\u636e\u7684\u4fe1\u606f\u4fdd\u5b58\u5728\u7ed3\u6784\u7684\u5b57\u6bb5\u6807\u7b7e\u4e2d\u3002\u53cd\u8fc7\u6765\u8bf4\uff0c\u7531\u4e8e\u53ef\u4ee5\u5904\u7406\u5b9e\u9645\u4f20\u9012\u5230Datastore\u7684\u5b9e\u4f53\u672c\u8eab\uff0c\u56e0\u6b64\u5bf9\u4e8e\u5b9e\u65f6\u5907\u4efd\u5230BigQuery\u7684\u8981\u6c42\u6765\u8bf4\uff0c\u8fd9\u5df2\u7ecf\u662f\u8db3\u591f\u4e86\u3002\u76ee\u524d\uff0c\u6ca1\u6709\u7279\u522b\u8003\u8651\u89e3\u51b3\u65b9\u6cd5\u3002<\/p>\n
              \u611f\u8b1d\u8a5e<\/h1>\n
              aespy\u548cbbq\u5728\u94f6\u5468\u671f\u95f4\u53c2\u52a0\u4e86\u4e00\u4e2a\u8fde\u7eed28\u5c0f\u65f6\u7684\u201c\u9ed8\u9ed8\u4f1a\u8bae\u201d\uff08\u5b9e\u9645\u4e0a\u66f4\u63a5\u8fd1\u4e00\u4e2a\u6ca1\u6709\u660e\u786e\u76ee\u6807\u7684\u9ed1\u5ba2\u9a6c\u62c9\u677e\u6d3b\u52a8\uff09\u3002\u4ece\u661f\u671f\u4e0013\u70b9\u6301\u7eed\u5230\u661f\u671f\u4e8c17\u70b9\uff0c\u867d\u7136\u8fd9\u6b21\u6d3b\u52a8\u5f88\u6709\u8da3\uff0c\u4f46\u5bf9\u4f53\u529b\u7684\u8003\u9a8c\u4e5f\u5f88\u5927\uff0c\u6240\u4ee5\u4e0b\u6b21\u6211\u6253\u7b97\u5e26\u7740\u7761\u888b\u6765\u3002\u6211\u4e5f\u60f3\u518d\u6b21\u53c2\u52a0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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