{"id":50250,"date":"2023-07-04T09:18:11","date_gmt":"2023-05-17T20:58:01","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e4%bd%bf%e7%94%a8docker%e6%9d%a5%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8scalar-dl%e3%80%82\/"},"modified":"2024-04-30T11:54:57","modified_gmt":"2024-04-30T03:54:57","slug":"%e6%88%91%e4%bd%bf%e7%94%a8docker%e6%9d%a5%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8scalar-dl%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e4%bd%bf%e7%94%a8docker%e6%9d%a5%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8scalar-dl%e3%80%82\/","title":{"rendered":"\u6211\u4f7f\u7528Docker\u6765\u5c1d\u8bd5\u4f7f\u7528Scalar DL"},"content":{"rendered":"<p>\u7531\u4e8eUDF\u7684\u672f\u8bed\u540d\u79f0\u5df2\u66f4\u6539\u4e3a\u201cFunction\u201d\uff0c\u56e0\u6b64\u672c\u6587\u8fdb\u884c\u4e86\u4fee\u6b63\u3002\uff082020\/1\/10\uff09<\/p>\n<h1>\u300cScalar DL\u300d\u662f\u4e00\u79cd\u4ec0\u4e48\uff1f<\/h1>\n<p>Scalar\u79d1\u6280\u5f00\u53d1\u7684\u5206\u5e03\u5f0f\u8d26\u672c\u5e73\u53f0\u8f6f\u4ef6\uff0c\u7075\u611f\u6765\u81ea\u4e8e\u533a\u5757\u94fe\u6280\u672f\u3002<\/p>\n<p>\u6807\u91cf DLT | \u6807\u91cf\u516c\u53f8<br \/>\n\u6807\u91cf DL \u6587\u4ef6<\/p>\n<p>Scalar DL\u4e0e\u533a\u5757\u94fe\u76f8\u4f3c\u4e4b\u5904\u5728\u4e8e\u5177\u5907\u7be1\u6539\u62b5\u6297\u6027\u548c\u5206\u6563\u6027\uff0c\u4f46Scalar DL\u8fd8\u5177\u6709\u4ee5\u4e0b\u72ec\u7279\u7279\u70b9\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30ce\u30fc\u30c9\u6570\u5897\u52a0\u306b\u4f34\u3046\u6027\u80fd\u52a3\u5316\u304c\u5c11\u306a\u3044\u3001\u9ad8\u3044\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u9ad8\u3044\u53ef\u7528\u6027\u3092\u5099\u3048\u305fACID\u6e96\u62e0\u306e\u30b9\u30de\u30fc\u30c8\u30b3\u30f3\u30c8\u30e9\u30af\u30c8\u5b9f\u884c<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u6b63\u78ba\u306a\u30d5\u30a1\u30a4\u30ca\u30ea\u30c6\u30a3<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u7dda\u5f62\u5316\u53ef\u80fd\u306a\u4e00\u8cab\u6027<\/ul>\n<p>\u540c\u6642\u5019\u8bbe\u5b9a\u4e86\u4e00\u4e9b\u9650\u5236\u6761\u4ef6\uff0c\u4ee5\u9632\u6b62\u8bbe\u8ba1\u5e08\u548c\u5f00\u53d1\u4eba\u5458\u610f\u5916\u7684\u5408\u7ea6\u884c\u4e3a\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u767b\u9332\u3057\u305f\u30b9\u30de\u30fc\u30c8\u30b3\u30f3\u30c8\u30e9\u30af\u30c8\u306f\u524a\u9664\u3067\u304d\u306a\u3044<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5916\u90e8\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u30b9\u30de\u30fc\u30c8\u30b3\u30f3\u30c8\u30e9\u30af\u30c8\u306eAsset\u3092\u76f4\u63a5\u64cd\u4f5c\u3067\u304d\u306a\u3044<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u81ea\u4f5c\u3057\u305f\u30b9\u30de\u30fc\u30c8\u30b3\u30f3\u30c8\u30e9\u30af\u30c8\u3092\u7d99\u627f\u3067\u304d\u306a\u3044<\/ul>\n<p>\u4f7f\u7528Scalar DL\u6267\u884c\u7684\u667a\u80fd\u5408\u7ea6\u6267\u884c\u7ed3\u679c\u7531\u540c\u516c\u53f8\u5f00\u53d1\u7684\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u7ba1\u7406\u8f6f\u4ef6Scalar DB\u8fdb\u884c\u7ba1\u7406\u3002<\/p>\n<p>\u5c1d\u8bd5\u5728WSL Ubuntu\u4e0a\u8fd0\u884cScalar DB\uff08\u73af\u5883\u8bbe\u7f6e\u6559\u7a0b\uff09<\/p>\n<p>\u9019\u6b21Scalar DL\u5f97\u5230\u4e86\u66f4\u65b0\uff0c\u4e26\u4e14\u65b0\u589e\u4e86\u4e00\u500b\u8207\u5176\u4ed6\u5340\u584a\u93c8\u548c\u76f8\u4f3c\u670d\u52d9\u4e0d\u540c\u7684\u72ec\u7279\u529f\u80fd\uff08\u5c07\u5728\u5f8c\u6587\u4e2d\u63cf\u8ff0\uff09\u3002\u6211\u5011\u5be6\u969b\u4e0a\u5728docker\u4e0a\u904b\u884c\u4e86\u5b83\u3002<\/p>\n<h1>\u8bf7\u6ce8\u610f<\/h1>\n<p>\u622a\u6b62\u52302019\u5e7412\u6708\uff0cScalar DL\u4ec5\u63d0\u4f9b\u5546\u4e1a\u8bb8\u53ef\u8bc1\uff0c\u56e0\u6b64\u5982\u679c\u8981\u5b9e\u9645\u4f7f\u7528\uff0c\u9700\u8981\u53e6\u5916\u5411Scalar\u516c\u53f8\u54a8\u8be2\u3002<\/p>\n<p>\u8054\u7cfb\u8868\u683c<\/p>\n<h1>\u5f00\u53d1\u73af\u5883<\/h1>\n<p>Ubuntu16.04 LTS \u5728 Windows10 \u7684 Hyper-V \u4e0a\u8fdb\u884c\u5b89\u88c5\uff08Oracle Java 8\uff09\u3002<\/p>\n<h1>\u9884\u5148\u51c6\u5907<\/h1>\n<p>Scalar\u793e\u63d0\u4f9b\u4e86Scalar DL\u7684\u6267\u884c\u73af\u5883\uff0c\u4f5c\u4e3a\u57fa\u4e8edocker\u5bb9\u5668\u7684\u5f62\u5f0f\u63d0\u4f9b\u3002<br \/>\nhttps:\/\/scalardl.readthedocs.io\/en\/latest\/installation-with-docker\/<\/p>\n<p>\u4e3a\u4e86\u542f\u52a8Docker\u5bb9\u5668\uff0c\u9700\u8981\u5b89\u88c5Docker Engine\u548cDocker Compose\u3002\u60a8\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u7f51\u7ad9\u8fdb\u884c\u5b89\u88c5\uff1a<br \/>\nhttps:\/\/docs.docker.com\/install\/<br \/>\nhttps:\/\/docs.docker.com\/compose\/install\/<\/p>\n<p>\u6b64\u5916\uff0c\u8fd8\u9700\u8981\u5b89\u88c5Java\u7684\u8fd0\u884c\u73af\u5883\u3002<\/p>\n<pre class=\"post-pre\"><code>$ apt update\r\n$ sudo apt install openjdk-8-jdk\r\n<\/code><\/pre>\n<h1>Scalar DL\u7684\u6267\u884c\u51c6\u5907<\/h1>\n<h3>\u514b\u9686scalar-samples\u5b58\u50a8\u5e93<\/h3>\n<pre class=\"post-pre\"><code>$ git clone https:\/\/github.com\/scalar-labs\/scalar-samples.git\r\n$ cd scalar-samples\r\n<\/code><\/pre>\n<h3>\u767b\u5f55<\/h3>\n<p>\u767b\u5f55\u5230Docker<\/p>\n<h3>\u5efa\u7acb\u670d\u52a1<\/h3>\n<p>\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u6784\u5efa\uff1a<br \/>\n$ sudo docker-compose build<br \/>\n\u203b\u53ef\u80fd\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u4e0d\u9700\u8981\u3002\u5728 AWS \u548c Azure \u7684 Cent OS 7 \u4e2d\u4e0d\u9700\u8981\u6b64\u547d\u4ee4\u3002<\/p>\n<h3>\u542f\u52a8\u5bb9\u5668<\/h3>\n<p>\u4f7f\u7528 Docker-compose \u542f\u52a8<\/p>\n<p>\u5728\u5c3e\u90e8\u6dfb\u52a0-d\u9009\u9879\u53ef\u4ee5\u4f7fCassandra\u5728\u540e\u53f0\u542f\u52a8\uff0c\u4f46\u662f\u7531\u4e8e\u65e0\u6cd5\u8fdb\u884c\u540e\u7eed\u64cd\u4f5c\u76f4\u5230Cassandra\u5b8c\u5168\u542f\u52a8\uff0c\u56e0\u6b64\u5efa\u8bae\u663e\u793a\u65e5\u5fd7\u5e76\u786e\u8ba4\u542f\u52a8\u60c5\u51b5\u3002<\/p>\n<p>\u5982\u679c\u5728\u8fd0\u884c\u65f6\u51fa\u73b0\u7c7b\u4f3c&#8221;\u627e\u4e0d\u5230\u53ef\u6267\u884c\u6587\u4ef6&#8221;\u7684\u9519\u8bef\uff0c\u8bf7\u68c0\u67e5\u6587\u4ef6\u7684\u6267\u884c\u6743\u9650\uff0c\u5e76\u9002\u5f53\u8d4b\u4e88\u6267\u884c\u6743\u9650\u3002<br \/>\n$ chmod +x \/path\/to\/file<\/p>\n<h3>\u6700\u521d\u52a0\u8f7d\u6a21\u5f0f\/\u65b9\u6848\u4e4b\u8f7d\u5165<\/h3>\n<p>\u4e3a\u4e86\u4f7f\u7528Scalar DL\uff0c\u9700\u8981\u5c06\u521d\u59cb\u6a21\u5f0f\u52a0\u8f7d\u5230Cassandra\u670d\u52a1\u5668\u4e0a\u3002\u53ea\u9700\u5728\u7b2c\u4e00\u6b21\u542f\u52a8\u65f6\u6267\u884c\u4e00\u6b21\u8be5\u547d\u4ee4\u3002<br \/>\n$ docker-compose exec cassandra cqlsh -f \/create_schema.cql<\/p>\n<h3>\u505c\u6b62\u5bb9\u5668<\/h3>\n<p>\u6309\u4e0bCtrl + C\u952e\uff0c\u6216\u4f7f\u7528$ docker-compose down\u547d\u4ee4\u3002<\/p>\n<h2>\u7f16\u8f91\u5c5e\u6027\u6587\u4ef6<\/h2>\n<p>\u7f16\u8f91scalar-samples\/conf\/client.properties\u6587\u4ef6\u4ee5\u914d\u7f6e\u5c5e\u6027\u6587\u4ef6\u3002\u4ee5\u4e0b\u662f\u6700\u57fa\u672c\u7684\u8bbe\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># A host name of Scalar DL network server.\r\n<\/span><span class=\"py\">scalar.ledger.client.server_host<\/span><span class=\"p\">=<\/span><span class=\"s\">localhost<\/span>\r\n\r\n<span class=\"c\"># An ID of a certificate holder. It must be configured for each private key and unique in the system.\r\n<\/span><span class=\"py\">scalar.ledger.client.cert_holder_id<\/span><span class=\"p\">=<\/span><span class=\"s\">foo<\/span>\r\n\r\n<span class=\"c\"># A certificate file path to use.\r\n<\/span><span class=\"py\">scalar.ledger.client.cert_path<\/span><span class=\"p\">=<\/span><span class=\"s\">\/path\/to\/foo.pem<\/span>\r\n\r\n<span class=\"c\"># A private key file path to use. \r\n<\/span><span class=\"py\">scalar.ledger.client.private_key_path<\/span><span class=\"p\">=<\/span><span class=\"s\">\/path\/to\/foo-key.pem<\/span>\r\n<\/code><\/pre>\n<p>\u6839\u636e\u81ea\u8eab\u73af\u5883\uff0c\u5bf9\u4ee5\u4e0b\u9879\u76ee\u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">scalar.ledger.client.server_host : Scalar DL\u30b5\u30fc\u30d0\u306e\u30db\u30b9\u30c8\u540d localhost\u3067\u3088\u3044<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">scalar.ledger.client.cert_holder_id : \u8a3c\u660e\u66f8\u306e\u6301\u3061\u4e3b\u306eID\u3002\u9069\u5f53\u306a\u81ea\u8eab\u306e\u30e6\u30fc\u30b6\u540d\u3092\u6307\u5b9a\u3057\u3066\u304a\u304f<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">scalar.ledger.client.cert_path : \u8a3c\u660e\u66f8\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u30d1\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">scalar.ledger.client.private_key_path : \u79d8\u5bc6\u9375\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u30d1\u30b9<\/ul>\n<h1>\u5408\u540c\u7684\u7b7e\u8ba2<\/h1>\n<p>\u6807\u91cfDL\u7684\u5408\u7ea6\u662f\u4e00\u4e2a\u6269\u5c55\u4e86Contract\u7c7b\u5e76\u91cd\u5199\u4e86invoke\u65b9\u6cd5\u7684Java\u7c7b\u3002\u672c\u6b21\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2a\u793a\u4f8b\u5408\u7ea6\uff0c\u8be5\u5408\u7ea6\u7684\u529f\u80fd\u662f\u5f53\u8f93\u5165asset_id\u548cstate\u65f6\uff0c\u5c06state\u503c\u6ce8\u518c\u5230\u7531asset_id\u6307\u5b9a\u7684\u8d44\u4ea7\u4e0a\u3002<\/p>\n<p>\u8fdb\u5165 src\/main\/java\/com\/org1\/contract\/StateUpdater.java \u8f93\u5165 vi \u547d\u4ee4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">com.org1.contract<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.ledger.asset.Asset<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.ledger.contract.Contract<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.ledger.exception.ContractContextException<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.ledger.ledger.Ledger<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.util.Optional<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">javax.json.Json<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">javax.json.JsonObject<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">StateUpdater<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">Contract<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"nd\">@Override<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"nc\">JsonObject<\/span> <span class=\"nf\">invoke<\/span><span class=\"o\">(<\/span><span class=\"nc\">Ledger<\/span> <span class=\"n\">ledger<\/span><span class=\"o\">,<\/span> <span class=\"nc\">JsonObject<\/span> <span class=\"n\">argument<\/span><span class=\"o\">,<\/span> <span class=\"nc\">Optional<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">JsonObject<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">properties<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n\r\n    <span class=\"k\">if<\/span> <span class=\"o\">(!<\/span><span class=\"n\">argument<\/span><span class=\"o\">.<\/span><span class=\"na\">containsKey<\/span><span class=\"o\">(<\/span><span class=\"s\">\"asset_id\"<\/span><span class=\"o\">)<\/span> <span class=\"o\">||<\/span> <span class=\"o\">!<\/span><span class=\"n\">argument<\/span><span class=\"o\">.<\/span><span class=\"na\">containsKey<\/span><span class=\"o\">(<\/span><span class=\"s\">\"state\"<\/span><span class=\"o\">))<\/span> <span class=\"o\">{<\/span>\r\n      <span class=\"c1\">\/\/ ContractContextException is the only throwable exception in a contract and<\/span>\r\n      <span class=\"c1\">\/\/ it should be thrown when a contract faces some non-recoverable error<\/span>\r\n      <span class=\"k\">throw<\/span> <span class=\"k\">new<\/span> <span class=\"nf\">ContractContextException<\/span><span class=\"o\">(<\/span><span class=\"s\">\"please set asset_id and state in the argument\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"nc\">String<\/span> <span class=\"n\">assetId<\/span> <span class=\"o\">=<\/span> <span class=\"n\">argument<\/span><span class=\"o\">.<\/span><span class=\"na\">getString<\/span><span class=\"o\">(<\/span><span class=\"s\">\"asset_id\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"kt\">int<\/span> <span class=\"n\">state<\/span> <span class=\"o\">=<\/span> <span class=\"n\">argument<\/span><span class=\"o\">.<\/span><span class=\"na\">getInt<\/span><span class=\"o\">(<\/span><span class=\"s\">\"state\"<\/span><span class=\"o\">);<\/span>\r\n\r\n    <span class=\"nc\">Optional<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Asset<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">asset<\/span> <span class=\"o\">=<\/span> <span class=\"n\">ledger<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">(<\/span><span class=\"n\">assetId<\/span><span class=\"o\">);<\/span>\r\n\r\n    <span class=\"k\">if<\/span> <span class=\"o\">(!<\/span><span class=\"n\">asset<\/span><span class=\"o\">.<\/span><span class=\"na\">isPresent<\/span><span class=\"o\">()<\/span> <span class=\"o\">||<\/span> <span class=\"n\">asset<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">().<\/span><span class=\"na\">data<\/span><span class=\"o\">().<\/span><span class=\"na\">getInt<\/span><span class=\"o\">(<\/span><span class=\"s\">\"state\"<\/span><span class=\"o\">)<\/span> <span class=\"o\">!=<\/span> <span class=\"n\">state<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n      <span class=\"n\">ledger<\/span><span class=\"o\">.<\/span><span class=\"na\">put<\/span><span class=\"o\">(<\/span><span class=\"n\">assetId<\/span><span class=\"o\">,<\/span> <span class=\"nc\">Json<\/span><span class=\"o\">.<\/span><span class=\"na\">createObjectBuilder<\/span><span class=\"o\">().<\/span><span class=\"na\">add<\/span><span class=\"o\">(<\/span><span class=\"s\">\"state\"<\/span><span class=\"o\">,<\/span> <span class=\"n\">state<\/span><span class=\"o\">).<\/span><span class=\"na\">build<\/span><span class=\"o\">());<\/span>\r\n    <span class=\"o\">}<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"kc\">null<\/span><span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5173\u4e8e\u7f16\u8bd1\u548c\u6267\u884c\u7684\u6b65\u9aa4\u5c06\u5728\u540e\u6587\u4e2d\u63d0\u5230\u3002<\/p>\n<h1>\u4f7f\u7528Function\u548cFunction\u521b\u5efa\u6a21\u5f0f<\/h1>\n<h2>&#8220;Function&#8221;\u662f\u4ec0\u4e48\u4e1c\u897f\uff1f<\/h2>\n<p>\u53ea\u9700\u4e00\u4e2a\u9009\u9879:<br \/>\n\u8fd9\u662f\u7528Java\u8bed\u8a00\u7f16\u5199\u7684\u7a0b\u5e8f\u3002<br \/>\n\u5728\u5408\u540c\u6267\u884c\u4e2d\uff0c\u53ef\u4ee5\u5728\u540c\u4e00\u4e8b\u52a1\u4e2d\u5bf9Scalar DB\u6267\u884c\u83b7\u53d6\u3001\u653e\u7f6e\u548c\u5220\u9664\u64cd\u4f5c\u3002<\/p>\n<p>\u7b80\u800c\u8a00\u4e4b\uff0c\u51fd\u6570\u53ef\u4ee5\u5b9e\u73b0\u5728\u540c\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u5904\u7406\u65e2\u9700\u8981\u4fdd\u6301\u4e0d\u53ef\u53d8\u6027\u7684\u6570\u636e\uff08Immutable Data\uff09\u53c8\u9700\u8981\u8fdb\u884c\u66f4\u6539\u7684\u6570\u636e\uff08Mutable Data\uff09\u3002<\/p>\n<p>\u5728\u8bbe\u8ba1\u548c\u5b9e\u65bd\u65f6\uff0c\u53ef\u4ee5\u5728\u51fd\u6570\u5185\u5f15\u7528\u548c\u4f7f\u7528\u5408\u7ea6\u7684\u53c2\u6570\uff0c\u4f46\u5728\u5408\u7ea6\u4e2d\u65e0\u6cd5\u5f15\u7528\u548c\u4f7f\u7528\u51fd\u6570\u7684\u53c2\u6570\uff0c\u9700\u8981\u6ce8\u610f\u8fd9\u4e00\u70b9\u3002<\/p>\n<h2>\u529f\u80fd\u7684\u793a\u4f8b<\/h2>\n<p>\u4ece\u5408\u540c\u7684\u53c2\u6570\u4e2d\u83b7\u53d6asset_id\u548cstate\uff0c\u5e76\u4eceFunction\u7684\u53c2\u6570\u4e2d\u83b7\u53d6user_id\uff0c\u7136\u540e\u521b\u5efa\u4e00\u4e2a\u51fd\u6570\uff0c\u5c06asset_id\u4e0euser_id\u548cstate\u4f5c\u4e3a\u952e\u8fdb\u884c\u6ce8\u518c\u3002<\/p>\n<p>$ \u6253\u5f00 src\/main\/java\/com\/scalar\/ist\/function\/SchemaUpdater.java \u6587\u4ef6\u7f16\u8f91<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">com.scalar.ist.function<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.database.api.Get<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.database.api.Put<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.database.api.Result<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.database.io.IntValue<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.database.io.Key<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.database.io.TextValue<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.ledger.database.MutableDatabase<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.ledger.udf.Function<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.util.Optional<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">javax.json.JsonObject<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">SchemaUpdater<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">Function<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"nd\">@Override<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">invoke<\/span><span class=\"o\">(<\/span>\r\n    <span class=\"nc\">MutableDatabase<\/span> <span class=\"n\">database<\/span><span class=\"o\">,<\/span>\r\n    <span class=\"nc\">JsonObject<\/span> <span class=\"n\">contractArgument<\/span><span class=\"o\">,<\/span>\r\n    <span class=\"nc\">Optional<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">JsonObject<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">functionArgument<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n\r\n    <span class=\"nc\">String<\/span> <span class=\"n\">userId<\/span> <span class=\"o\">=<\/span> <span class=\"n\">functionArgument<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">().<\/span><span class=\"na\">getString<\/span><span class=\"o\">(<\/span><span class=\"s\">\"user_id\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"kt\">int<\/span> <span class=\"n\">state<\/span> <span class=\"o\">=<\/span> <span class=\"n\">contractArgument<\/span><span class=\"o\">.<\/span><span class=\"na\">getInt<\/span><span class=\"o\">(<\/span><span class=\"s\">\"state\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"nc\">String<\/span> <span class=\"n\">assetId<\/span> <span class=\"o\">=<\/span> <span class=\"n\">contractArgument<\/span><span class=\"o\">.<\/span><span class=\"na\">getString<\/span><span class=\"o\">(<\/span><span class=\"s\">\"asset_id\"<\/span><span class=\"o\">);<\/span>\r\n\r\n    <span class=\"nc\">Get<\/span> <span class=\"n\">get<\/span> <span class=\"o\">=<\/span>\r\n      <span class=\"k\">new<\/span> <span class=\"nf\">Get<\/span><span class=\"o\">(<\/span>\r\n        <span class=\"k\">new<\/span> <span class=\"nf\">Key<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">TextValue<\/span><span class=\"o\">(<\/span><span class=\"s\">\"user_id\"<\/span><span class=\"o\">,<\/span> <span class=\"n\">userId<\/span><span class=\"o\">)),<\/span>\r\n        <span class=\"k\">new<\/span> <span class=\"nf\">Key<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">IntValue<\/span><span class=\"o\">(<\/span><span class=\"s\">\"state\"<\/span><span class=\"o\">,<\/span> <span class=\"n\">state<\/span><span class=\"o\">)))<\/span>\r\n        <span class=\"o\">.<\/span><span class=\"na\">forNamespace<\/span><span class=\"o\">(<\/span><span class=\"s\">\"test\"<\/span><span class=\"o\">)<\/span>\r\n        <span class=\"o\">.<\/span><span class=\"na\">forTable<\/span><span class=\"o\">(<\/span><span class=\"s\">\"test_schema\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"n\">database<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">(<\/span><span class=\"n\">get<\/span><span class=\"o\">);<\/span>\r\n\r\n    <span class=\"nc\">Put<\/span> <span class=\"n\">put<\/span> <span class=\"o\">=<\/span>\r\n      <span class=\"k\">new<\/span> <span class=\"nf\">Put<\/span><span class=\"o\">(<\/span>\r\n        <span class=\"k\">new<\/span> <span class=\"nf\">Key<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">TextValue<\/span><span class=\"o\">(<\/span><span class=\"s\">\"user_id\"<\/span><span class=\"o\">,<\/span> <span class=\"n\">userId<\/span><span class=\"o\">)),<\/span>\r\n        <span class=\"k\">new<\/span> <span class=\"nf\">Key<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">IntValue<\/span><span class=\"o\">(<\/span><span class=\"s\">\"state\"<\/span><span class=\"o\">,<\/span> <span class=\"n\">state<\/span><span class=\"o\">)))<\/span>\r\n        <span class=\"o\">.<\/span><span class=\"na\">withValue<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">TextValue<\/span><span class=\"o\">(<\/span><span class=\"s\">\"value\"<\/span><span class=\"o\">,<\/span><span class=\"n\">assetId<\/span><span class=\"o\">))<\/span>\r\n        <span class=\"o\">.<\/span><span class=\"na\">forNamespace<\/span><span class=\"o\">(<\/span><span class=\"s\">\"test\"<\/span><span class=\"o\">)<\/span>\r\n        <span class=\"o\">.<\/span><span class=\"na\">forTable<\/span><span class=\"o\">(<\/span><span class=\"s\">\"test_schema\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"n\">database<\/span><span class=\"o\">.<\/span><span class=\"na\">put<\/span><span class=\"o\">(<\/span><span class=\"n\">put<\/span><span class=\"o\">);<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u521b\u5efa\u7528\u4e8e Function \u7684\u67b6\u6784<\/h2>\n<p>\u4e3a\u4e86\u5c06\u503c\u6ce8\u518c\u5230 Scalar DB \u4e2d\uff0c\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u6b64\u76ee\u7684\u7684\u51fd\u6570\u6a21\u5f0f\u3002<br \/>\n\u4f46\u662f\uff0c\u5728\u521b\u5efa\u6a21\u5f0f\u65f6\uff0c\u5fc5\u987b\u662f\u652f\u6301\u4e8b\u52a1\u7684\u5f62\u5f0f\u3002<br \/>\n\u53c2\u8003\uff1aScalar DB\u6587\u6863-Scalar DB\u4e2d\u7684\u5185\u90e8\u5143\u6570\u636e<\/p>\n<p>\u5728Cassandra\u7684shell\u4e2d\u8f93\u5165\u547d\u4ee4\u6765\u521b\u5efa\u6a21\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code>$ docker-compose exec cassandra cqlsh\r\ncqlsh&gt; create table test.test_schema    \r\n (\r\n  user_id text,\r\n  state int,\r\n  value text,\r\n  before_value text,\r\n\r\n  before_tx_committed_at bigint,\r\n  before_tx_id text,\r\n  before_tx_prepared_at bigint,\r\n  before_tx_state int,\r\n  before_tx_version int,\r\n  tx_committed_at bigint,\r\n  tx_id text,\r\n  tx_prepared_at bigint,\r\n  tx_state int,\r\n  tx_version int,\r\n  primary key (user_id, state)\r\n );\r\n<\/code><\/pre>\n<p>\u786e\u8ba4\u5df2\u521b\u5efa\u7684\u8868\u683c<\/p>\n<pre class=\"post-pre\"><code>cqlsh&gt; use test;\r\ncqlsh:test&gt; describe tables;\r\n\r\ntest_schema\r\n<\/code><\/pre>\n<h1>\u5408\u540c\u548c\u51fd\u6570\u7684\u6ce8\u518c\u4e0e\u6267\u884c<\/h1>\n<p>\u4e3a\u4e86\u6267\u884c\u5408\u540c\u548c\u529f\u80fd\uff0c\u9700\u8981\u9884\u5148\u6307\u5b9a\u6bcf\u4e2a\u5408\u540c\u548c\u529f\u80fd\u7684\u552f\u4e00ID\uff0c\u5e76\u4f7f\u7528\u79c1\u94a5\u8fdb\u884c\u7b7e\u540d\uff0c\u7136\u540e\u5c06\u5176\u6ce8\u518c\u5230Scalar DL\u4e2d\u3002\u8fd9\u79cd\u673a\u5236\u53ef\u4ee5\u660e\u786e\u6307\u793a\u6267\u884c\u8005\u7684\u8eab\u4efd\uff0c\u9632\u6b62\u6ca1\u6709\u6743\u9650\u7684\u7528\u6237\u6267\u884c\u64cd\u4f5c\uff0c\u5e76\u5e26\u6765\u5176\u4ed6\u4e00\u4e9b\u597d\u5904\u3002<\/p>\n<h3>\u7f16\u8bd1<\/h3>\n<p>\u8bf7\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u6784\u5efa: $ .\/gradlew assemble<\/p>\n<p>\u5408\u540c\u7684\u7c7b\u6587\u4ef6\u5c06\u88ab\u521b\u5efa\u5728build\/classes\/java\/main\/com\/org1\/contract\/StateUpdater.class\u3002<\/p>\n<h3>\u5408\u540c\u7684\u6ce8\u518c<\/h3>\n<p>\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879<\/p>\n<p>\u7531\u4e8e\u63d0\u4f9b\u4e86\u7528\u4e8e\u6ce8\u518c\u7684\u7b80\u5355\u5de5\u5177\uff0c\u56e0\u6b64\u8bf7\u4f7f\u7528\u3002\u5728\u8fdb\u884c\u6ce8\u518c\u65f6\uff0c\u9700\u8981\u63d0\u4f9b\u5c5e\u6027\u6587\u4ef6\u8def\u5f84\u3001\u5168\u5c40\u552f\u4e00\u5408\u7ea6ID\u3001\u5408\u7ea6\u4e8c\u8fdb\u5236\u6587\u4ef6\u540d\u548c\u7c7b\u6587\u4ef6\u8def\u5f84\u3002<\/p>\n<pre class=\"post-pre\"><code>$ client\/bin\/register-contract -properties conf\/client.properties -contract-id StateUpdater -contract-binary-name com.org1.contract.StateUpdater -contract-class-file build\/classes\/java\/main\/com\/org1\/contract\/StateUpdater.class\r\n<\/code><\/pre>\n<p>\u5f53\u6210\u529f\u65f6\uff0c\u4f1a\u663e\u793a\u72b6\u6001\u7801\u4e3a200\u3002<\/p>\n<h3>\u6ce8\u518cFunction<\/h3>\n<p>\u4f7f\u7528\u4e0e\u5408\u540c\u76f8\u540c\u7684\u5de5\u5177\u8fdb\u884c\u6ce8\u518c\u3002\u540c\u6837\u9700\u8981\u5c5e\u6027\u6587\u4ef6\u7684\u8def\u5f84\u3001\u5168\u5c40\u552f\u4e00\u6807\u8bc6\u3001\u4e8c\u8fdb\u5236\u6587\u4ef6\u540d\u548c\u7c7b\u6587\u4ef6\u7684\u8def\u5f84\u3002<\/p>\n<pre class=\"post-pre\"><code>client\/bin\/register-function -properties conf\/client.properties -function-id SchemaUpdater -function-binary-name com.scalar.ist.function.SchemaUpdater -function-class-file build\/classes\/java\/main\/com\/scalar\/ist\/function\/SchemaUpdater.class\r\n<\/code><\/pre>\n<p>\u5f53\u6210\u529f\u65f6\uff0c\u4f1a\u663e\u793a\u72b6\u6001\u7801\uff1a200\u3002<\/p>\n<h3>\u6267\u884c<\/h3>\n<p>\u4f7f\u7528\u4e0a\u8ff0\u7684\u6b65\u9aa4\u6ce8\u518c\u5408\u7ea6\u548c\u6267\u884c\u51fd\u6570\u3002\u6267\u884c\u4e5f\u662f\u4f7f\u7528\u5de5\u5177\u8fdb\u884c\u7684\uff0c\u4f7f\u7528\u201c-contract-argument\u201d\u9009\u9879\u6765\u6307\u5b9a\u5408\u7ea6\u7684\u53c2\u6570\uff0c\u5e76\u4f7f\u7528\u201c&#8221;_functions_&#8221;: [&#8220;Function\u7684ID1&#8243;,&#8221;Function\u7684ID2&#8221;,&#8230;](\u6570\u7ec4)\u201d\u7684\u683c\u5f0f\u6765\u6307\u5b9a\u5728\u540c\u4e00\u7b14\u4ea4\u6613\u4e2d\u8981\u6267\u884c\u7684\u51fd\u6570\u3002\u51fd\u6570\u4f7f\u7528\u7684\u53c2\u6570\u53ef\u4ee5\u4f7f\u7528\u201c-function-argument\u201d\u9009\u9879\u6765\u6307\u5b9a\u3002<\/p>\n<pre class=\"post-pre\"><code>client\/bin\/execute-contract -properties conf\/client.properties -contract-id StateUpdater -contract-argument '{\"asset_id\": \"my_asset\", \"state\": 1, \"_functions_\": [\"SchemaUpdater\"]}' -function-argument '{\"user_id\": \"john\"}'\r\n<\/code><\/pre>\n<p>\u6210\u529f\u65f6\uff0c\u5c06\u663e\u793a\u72b6\u6001\u7801\u4e3a200\u3002<\/p>\n<p>\u8bf7\u6ce8\u610f\uff0c\u5982\u679c\u5408\u540c\u4e2d\u672a\u8fdb\u884c\u8d44\u4ea7\u66f4\u65b0\uff0c\u5219\u4e5f\u4e0d\u4f1a\u8fdb\u884c\u901a\u8fc7\u51fd\u6570\u8fdb\u884c\u7684\u6a21\u5f0f\u66f4\u65b0\u3002<\/p>\n<h3>\u786e\u8ba4<\/h3>\n<p>\u6267\u884c\u5408\u540c\u540e\uff0c\u8fdb\u884c\u786e\u8ba4\u662f\u5426\u987a\u5229\u6267\u884c\u3002\u6211\u4eec\u5c06\u5b9e\u65bd\u4e00\u9879\u5408\u540c\u4ee5\u83b7\u53d6\u8d44\u4ea7\u7684\u6700\u65b0\u503c\u5e76\u8fdb\u884c\u6ce8\u518c\u548c\u6267\u884c\u4ee5\u8fdb\u884c\u786e\u8ba4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">com.org1.contract<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.ledger.asset.Asset<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.ledger.asset.InternalAsset<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.ledger.contract.Contract<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.scalar.ledger.ledger.Ledger<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">javax.json.Json<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">javax.json.JsonObject<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">javax.json.JsonObjectBuilder<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.util.Optional<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">StateReader<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">Contract<\/span> <span class=\"o\">{<\/span>\r\n\r\n  <span class=\"nd\">@Override<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"nc\">JsonObject<\/span> <span class=\"nf\">invoke<\/span><span class=\"o\">(<\/span><span class=\"nc\">Ledger<\/span> <span class=\"n\">ledger<\/span><span class=\"o\">,<\/span> <span class=\"nc\">JsonObject<\/span> <span class=\"n\">argument<\/span><span class=\"o\">,<\/span> <span class=\"nc\">Optional<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">JsonObject<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">properties<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nc\">String<\/span> <span class=\"n\">assetId<\/span> <span class=\"o\">=<\/span> <span class=\"n\">argument<\/span><span class=\"o\">.<\/span><span class=\"na\">getString<\/span><span class=\"o\">(<\/span><span class=\"s\">\"asset_id\"<\/span><span class=\"o\">);<\/span>\r\n\r\n    <span class=\"nc\">Optional<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Asset<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">asset<\/span> <span class=\"o\">=<\/span> <span class=\"n\">ledger<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">(<\/span><span class=\"n\">assetId<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"nc\">InternalAsset<\/span> <span class=\"n\">internal<\/span> <span class=\"o\">=<\/span> <span class=\"o\">(<\/span><span class=\"nc\">InternalAsset<\/span><span class=\"o\">)<\/span> <span class=\"n\">asset<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">();<\/span>\r\n\r\n    <span class=\"nc\">JsonObjectBuilder<\/span> <span class=\"n\">builder<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Json<\/span><span class=\"o\">.<\/span><span class=\"na\">createObjectBuilder<\/span><span class=\"o\">()<\/span>\r\n        <span class=\"o\">.<\/span><span class=\"na\">add<\/span><span class=\"o\">(<\/span><span class=\"s\">\"state\"<\/span><span class=\"o\">,<\/span> <span class=\"n\">internal<\/span><span class=\"o\">.<\/span><span class=\"na\">data<\/span><span class=\"o\">());<\/span>\r\n\r\n    <span class=\"k\">return<\/span> <span class=\"n\">builder<\/span><span class=\"o\">.<\/span><span class=\"na\">build<\/span><span class=\"o\">();<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5408\u540c\u6ce8\u518c<\/p>\n<pre class=\"post-pre\"><code>$ client\/bin\/register-contract -properties conf\/client.properties -contract-id StateReader -contract-binary-name com.org1.contract.StateReader -contract-class-file build\/classes\/java\/main\/com\/org1\/contract\/StateReader.class\r\n<\/code><\/pre>\n<p>\u4e00\u65e6\u6210\u529f\uff0c\u4f1a\u663e\u793a\u72b6\u6001\u7801\u4e3a200\u3002<\/p>\n<p>\u6267\u884c<\/p>\n<pre class=\"post-pre\"><code>client\/bin\/execute-contract -properties conf\/client.properties -contract-id StateReader -contract-argument '{\"asset_id\": \"my_asset\"}'\r\n<\/code><\/pre>\n<p>\u5982\u679c\u6b63\u786e\u6267\u884c\u7684\u8bdd\uff0c\u5e94\u8be5\u663e\u793a\u4e3a&#8221;state&#8221;:{&#8220;state&#8221;:1}\u3002<\/p>\n<p>\u5173\u4e8e\u529f\u80fd\u7684\u6267\u884c\u786e\u8ba4\uff0c\u76f4\u63a5\u68c0\u67e5Cassandra\u7684\u6a21\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code>$ docker-compose exec cassandra cqlsh\r\ncqlsh&gt; select * from test.test_schema;\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d903e913a08637a6db4ca\/90-0.png\" alt=\"image.png\" \/><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7531\u4e8eUDF\u7684\u672f\u8bed\u540d\u79f0\u5df2\u66f4\u6539\u4e3a\u201cFunction\u201d\uff0c\u56e0\u6b64\u672c\u6587\u8fdb\u884c\u4e86\u4fee\u6b63\u3002\uff082020\/1\/10\uff09 \u300cScalar  [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-50250","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u6211\u4f7f\u7528Docker\u6765\u5c1d\u8bd5\u4f7f\u7528Scalar DL - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u6211\u4f7f\u7528docker\u6765\u5c1d\u8bd5\u4f7f\u7528scalar-dl\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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