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extension mechanism for custom logs and span attributes (#1451)
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rinfx
GitHub
68
plugins/wasm-go/examples/custom-log/config.yaml
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68
plugins/wasm-go/examples/custom-log/config.yaml
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static_resources:
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listeners:
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- name: listener_0
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address:
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socket_address:
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protocol: TCP
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address: 0.0.0.0
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port_value: 8080
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filter_chains:
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- filters:
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- name: envoy.filters.network.http_connection_manager
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typed_config:
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"@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
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stat_prefix: ingress_http
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access_log:
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- name: envoy.access_loggers.file
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typed_config:
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"@type": type.googleapis.com/envoy.extensions.access_loggers.file.v3.FileAccessLog
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log_format:
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text_format_source:
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inline_string: "{\"custom_log\":\"%FILTER_STATE(wasm.custom_log:PLAIN)%\",\"ai_log\":\"%FILTER_STATE(wasm.ai_log:PLAIN)%\"}
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"
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path: /dev/stdout
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route_config:
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name: local_route
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virtual_hosts:
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- name: local_service
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domains: ["*"]
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routes:
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- name: get
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match:
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prefix: "/get"
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route:
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cluster: httpbin
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http_filters:
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- name: test
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typed_config:
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"@type": type.googleapis.com/udpa.type.v1.TypedStruct
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type_url: type.googleapis.com/envoy.extensions.filters.http.wasm.v3.Wasm
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value:
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config:
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name: test
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vm_config:
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runtime: envoy.wasm.runtime.v8
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code:
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local:
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filename: main.wasm
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configuration:
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"@type": "type.googleapis.com/google.protobuf.StringValue"
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value: {}
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- name: envoy.filters.http.router
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typed_config:
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"@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
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clusters:
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- name: httpbin
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connect_timeout: 600s
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type: STRICT_DNS
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lb_policy: ROUND_ROBIN
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load_assignment:
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cluster_name: httpbin
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endpoints:
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- lb_endpoints:
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- endpoint:
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address:
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socket_address:
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address: httpbin.org
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port_value: 80
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20
plugins/wasm-go/examples/custom-log/go.mod
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20
plugins/wasm-go/examples/custom-log/go.mod
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module github.com/alibaba/higress/plugins/wasm-go/extensions/custom-logs
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go 1.18
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replace github.com/alibaba/higress/plugins/wasm-go => ../..
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require (
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github.com/alibaba/higress/plugins/wasm-go v0.0.0
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github.com/higress-group/proxy-wasm-go-sdk v1.0.0
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)
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require (
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github.com/google/uuid v1.3.0 // indirect
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github.com/higress-group/nottinygc v0.0.0-20231101025119-e93c4c2f8520 // indirect
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github.com/magefile/mage v1.14.0 // indirect
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github.com/tidwall/gjson v1.17.3 // indirect
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github.com/tidwall/match v1.1.1 // indirect
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github.com/tidwall/pretty v1.2.0 // indirect
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github.com/tidwall/resp v0.1.1 // indirect
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)
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20
plugins/wasm-go/examples/custom-log/go.sum
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20
plugins/wasm-go/examples/custom-log/go.sum
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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
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github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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github.com/higress-group/nottinygc v0.0.0-20231101025119-e93c4c2f8520 h1:IHDghbGQ2DTIXHBHxWfqCYQW1fKjyJ/I7W1pMyUDeEA=
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github.com/higress-group/nottinygc v0.0.0-20231101025119-e93c4c2f8520/go.mod h1:Nz8ORLaFiLWotg6GeKlJMhv8cci8mM43uEnLA5t8iew=
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github.com/higress-group/proxy-wasm-go-sdk v1.0.0 h1:BZRNf4R7jr9hwRivg/E29nkVaKEak5MWjBDhWjuHijU=
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github.com/higress-group/proxy-wasm-go-sdk v1.0.0/go.mod h1:iiSyFbo+rAtbtGt/bsefv8GU57h9CCLYGJA74/tF5/0=
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github.com/magefile/mage v1.14.0 h1:6QDX3g6z1YvJ4olPhT1wksUcSa/V0a1B+pJb73fBjyo=
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github.com/magefile/mage v1.14.0/go.mod h1:z5UZb/iS3GoOSn0JgWuiw7dxlurVYTu+/jHXqQg881A=
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github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
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github.com/tidwall/gjson v1.17.3 h1:bwWLZU7icoKRG+C+0PNwIKC6FCJO/Q3p2pZvuP0jN94=
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github.com/tidwall/gjson v1.17.3/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
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github.com/tidwall/match v1.1.1 h1:+Ho715JplO36QYgwN9PGYNhgZvoUSc9X2c80KVTi+GA=
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github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
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github.com/tidwall/pretty v1.2.0 h1:RWIZEg2iJ8/g6fDDYzMpobmaoGh5OLl4AXtGUGPcqCs=
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github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
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github.com/tidwall/resp v0.1.1 h1:Ly20wkhqKTmDUPlyM1S7pWo5kk0tDu8OoC/vFArXmwE=
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github.com/tidwall/resp v0.1.1/go.mod h1:3/FrruOBAxPTPtundW0VXgmsQ4ZBA0Aw714lVYgwFa0=
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gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
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67
plugins/wasm-go/examples/custom-log/main.go
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67
plugins/wasm-go/examples/custom-log/main.go
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// Copyright (c) 2022 Alibaba Group Holding Ltd.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"math/rand"
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"github.com/higress-group/proxy-wasm-go-sdk/proxywasm/types"
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"github.com/alibaba/higress/plugins/wasm-go/pkg/wrapper"
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)
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func main() {
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wrapper.SetCtx(
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"custom-log",
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wrapper.ProcessRequestHeadersBy(onHttpRequestHeaders),
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)
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}
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type CustomLogConfig struct {
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}
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// Method 1: write custom log
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func writeLog(ctx wrapper.HttpContext) {
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ctx.SetUserAttribute("question", "当然可以。在Python中，你可以创建一个函数来计算一系列数字的和。下面是一个简单的例子，该函数接受一个数字列表作为输入，并返回它们的总和。\n\n```python\ndef sum_of_numbers(numbers):\n \"\"\"\n 计算列表中所有数字的和。\n \n 参数:\n numbers (list of int or float): 一个包含数字的列表。\n \n 返回:\n int or float: 列表中所有数字的总和。\n \"\"\"\n total_sum = sum(numbers) # 使用Python内置的sum函数计算总和\n return total_sum\n\n# 示例使用\nnumbers_list = [1, 2, 3, 4, 5]\nprint(\"The sum is:\", sum_of_numbers(numbers_list)) # 输出：The sum is: 15\n```\n\n在这段代码中，我们定义了一个名为 `sum_of_numbers` 的函数，它接收一个参数 `numbers`，这是一个包含整数或浮点数的列表。函数内部使用了Python的内置函数 `sum()` 来计算这些数字的总和，并将结果返回。\n\n你也可以手动实现求和逻辑，而不是使用内置的 `sum()` 函数，如下所示：\n\n```python\ndef sum_of_numbers_manual(numbers):\n \"\"\"\n 手动计算列表中所有数字的和。\n \n 参数:\n numbers (list of int or float): 一个包含数字的列表。\n \n 返回:\n int or float: 列表中所有数字的总和。\n \"\"\"\n total_sum = 0\n for number in numbers:\n total_sum += number\n return total_sum\n\n# 示例使用\nnumbers_list = [1, 2, 3, 4, 5]\nprint(\"The sum is:\", sum_of_numbers_manual(numbers_list)) # 输出：The sum is: 15\n```\n\n在这个版本中，我们初始化 `total_sum` 为0，然后遍历列表中的每个元素，并将其加到 `total_sum` 上。最后返回这个累加的结果。这两种方法都可以达到相同的目的，但是使用内置函数通常更简洁且效率更高。")
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ctx.SetUserAttribute("k2", 2213.22)
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ctx.WriteUserAttributeToLog()
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}
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// Methods 2: write custom log with specific key
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func writeLogWithKey(ctx wrapper.HttpContext, key string) {
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ctx.SetUserAttribute("k2", 2213.22)
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_ = ctx.WriteUserAttributeToLogWithKey(key)
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ctx.SetUserAttribute("k2", 212939.22)
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ctx.SetUserAttribute("k3", 123)
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_ = ctx.WriteUserAttributeToLogWithKey(key)
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}
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// Methods 2: write custom log with specific key
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func writeTraceAttribute(ctx wrapper.HttpContext) {
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ctx.SetUserAttribute("question", "当然可以。在Python中，你可以创建一个函数来计算一系列数字的和。下面是一个简单的例子，该函数接受一个数字列表作为输入，并返回它们的总和。\n\n```python\ndef sum_of_numbers(numbers):\n \"\"\"\n 计算列表中所有数字的和。\n \n 参数:\n numbers (list of int or float): 一个包含数字的列表。\n \n 返回:\n int or float: 列表中所有数字的总和。\n \"\"\"\n total_sum = sum(numbers) # 使用Python内置的sum函数计算总和\n return total_sum\n\n# 示例使用\nnumbers_list = [1, 2, 3, 4, 5]\nprint(\"The sum is:\", sum_of_numbers(numbers_list)) # 输出：The sum is: 15\n```\n\n在这段代码中，我们定义了一个名为 `sum_of_numbers` 的函数，它接收一个参数 `numbers`，这是一个包含整数或浮点数的列表。函数内部使用了Python的内置函数 `sum()` 来计算这些数字的总和，并将结果返回。\n\n你也可以手动实现求和逻辑，而不是使用内置的 `sum()` 函数，如下所示：\n\n```python\ndef sum_of_numbers_manual(numbers):\n \"\"\"\n 手动计算列表中所有数字的和。\n \n 参数:\n numbers (list of int or float): 一个包含数字的列表。\n \n 返回:\n int or float: 列表中所有数字的总和。\n \"\"\"\n total_sum = 0\n for number in numbers:\n total_sum += number\n return total_sum\n\n# 示例使用\nnumbers_list = [1, 2, 3, 4, 5]\nprint(\"The sum is:\", sum_of_numbers_manual(numbers_list)) # 输出：The sum is: 15\n```\n\n在这个版本中，我们初始化 `total_sum` 为0，然后遍历列表中的每个元素，并将其加到 `total_sum` 上。最后返回这个累加的结果。这两种方法都可以达到相同的目的，但是使用内置函数通常更简洁且效率更高。")
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ctx.SetUserAttribute("k2", 2213.22)
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ctx.WriteUserAttributeToTrace()
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}
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func onHttpRequestHeaders(ctx wrapper.HttpContext, config CustomLogConfig, log wrapper.Log) types.Action {
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if rand.Intn(10)%3 == 1 {
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writeLog(ctx)
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} else if rand.Intn(10)%3 == 2 {
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writeLogWithKey(ctx, "ai_log")
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} else {
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writeTraceAttribute(ctx)
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}
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return types.ActionContinue
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}
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