透過 Cloud Logging 觸發函式
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根據 Cloud Logging 項目觸發函式。
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程式碼範例
Java
如要驗證 Cloud Run 函式,請設定應用程式預設憑證。
詳情請參閱「為本機開發環境設定驗證」。
Node.js
如要驗證 Cloud Run 函式,請設定應用程式預設憑證。
詳情請參閱「為本機開發環境設定驗證」。
Python
如要驗證 Cloud Run 函式,請設定應用程式預設憑證。
詳情請參閱「為本機開發環境設定驗證」。
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[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis page details how to trigger a function in response to entries in Cloud Logging.\u003c/p\u003e\n"],["\u003cp\u003eThe examples demonstrate how to process log entry data within the triggered functions using Go, Java, Node.js, and Python.\u003c/p\u003e\n"],["\u003cp\u003eThe provided code samples show how to extract information from the log entry, such as the method, resource, and initiator.\u003c/p\u003e\n"],["\u003cp\u003eAuthentication for the Cloud Run functions requires setting up Application Default Credentials, as detailed in the linked documentation.\u003c/p\u003e\n"],["\u003cp\u003eThe page provides links to further documentation on second-party triggers with cloud logging and how to trigger functions from log entries.\u003c/p\u003e\n"]]],[],null,["# Trigger function from Cloud Logging\n\nTriggers a function based on Cloud Logging entries.\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Second-Party Triggers with Cloud Logging](/functions/1stgendocs/calling/logging)\n- [Trigger functions from log entries](/run/docs/triggering/trigger-functions-from-log-entries)\n\nCode sample\n-----------\n\n### Go\n\n\nTo authenticate to Cloud Run functions, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n\n // Package log contains examples for handling Cloud Functions logs.\n package log\n\n import (\n \t\"context\"\n \t\"log\"\n )\n\n // PubSubMessage is the payload of a Pub/Sub event.\n // See the documentation for more details:\n // https://cloud.google.com/pubsub/docs/reference/rest/v1/PubsubMessage\n type PubSubMessage struct {\n \tData []byte `json:\"data\"`\n }\n\n // ProcessLogEntry processes a Pub/Sub message from Cloud Logging.\n func ProcessLogEntry(ctx context.Context, m PubSubMessage) error {\n \tlog.Printf(\"Log entry data: %s\", string(m.Data))\n \treturn nil\n }\n\n### Java\n\n\nTo authenticate to Cloud Run functions, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n\n import com.google.cloud.functions.BackgroundFunction;\n import com.google.cloud.functions.Context;\n import functions.eventpojos.PubsubMessage;\n import java.nio.charset.StandardCharsets;\n import java.util.Base64;\n import java.util.logging.Logger;\n\n public class StackdriverLogging implements BackgroundFunction\u003cPubsubMessage\u003e {\n private static final Logger logger = Logger.getLogger(StackdriverLogging.class.getName());\n\n @Override\n public void accept(PubsubMessage message, Context context) {\n String name = \"World\";\n\n if (!message.getData().isEmpty()) {\n name = new String(Base64.getDecoder().decode(\n message.getData().getBytes(StandardCharsets.UTF_8)), StandardCharsets.UTF_8);\n }\n String res = String.format(\"Hello, %s\", name);\n logger.info(res);\n }\n }\n\n### Node.js\n\n\nTo authenticate to Cloud Run functions, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n exports.processLogEntry = data =\u003e {\n const dataBuffer = Buffer.from(data.data, 'base64');\n\n const logEntry = JSON.parse(dataBuffer.toString('ascii')).protoPayload;\n console.log(`Method: ${logEntry.methodName}`);\n console.log(`Resource: ${logEntry.resourceName}`);\n console.log(`Initiator: ${logEntry.authenticationInfo.principalEmail}`);\n };\n\n### Python\n\n\nTo authenticate to Cloud Run functions, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n import base64\n import json\n\n def process_log_entry(data, context):\n data_buffer = base64.b64decode(data[\"data\"])\n log_entry = json.loads(data_buffer)[\"protoPayload\"]\n\n print(f\"Method: {log_entry['methodName']}\")\n print(f\"Resource: {log_entry['resourceName']}\")\n print(f\"Initiator: {log_entry['authenticationInfo']['principalEmail']}\")\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=functions)."]]