open policy agent nodejs

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A tag already exists with the provided branch name. In this post, I will cover no. This document is the authoritative specification of the OPA REST API. Execute an ad-hoc query and return bindings for variables found in the query. The examples below assume the following policy: Use this API if you are enforcing policy decisions via webhooks that have pre-defined The documentation includes tutorials for many common applications of OPA, such as Kubernetes, Terraform, Envoy/Istio and application authorization. Security concerns are limited to those management features that are enabled or implemented. rules exist to answer questions like: You integrate services with OPA so that these kinds of policy decisions do not The output of a Wasm module built this way contain the result of evaluating the Example 1: Filename: index.js const http = require ('http'); var agent = new http.Agent ( {}); const aliveAgent = new http.Agent ( { keepAlive: true, maxSockets: 0, maxSockets: 5, }); var agent = new http.Agent ( {}); var createConnection = aliveAgent.createConnection; We implemented a simple NodeJS ForwardAuth Middleware application to connect Traefik with Open Policy Agent. !req.headers ['user-agent'].match (/Android/); ==> true, false. can call entrypoints() after instantiating the module to retrieve the response. Trailing slashes are automatically removed from both arguments. (, tracing: make otel dependency optional for rego+topdown (, compile+types: Speed up typechecker when working with Refs (, build(deps): bump google.golang.org/grpc from 1.51.0 to 1.52.0 (, ci: remove deprecated linters in golangci config (, nightly: address recent findings, update trivyignore (, initial draft of the community badges program (, website: add contributing section from existing content (, Update base images for non debug builds (, docs: make SDK first option for Go integraton (, SECURITY: migrate policy to web site, update content (, time.format: new builtin to get string timestamp for ns (, Update Hugo version, update deprecated Page fields (. Are you sure you want to create this branch? without the "result" key. The rego.New() call can be Use the --data-binary flag instead. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Client Facing experience in Enterprise Application Architecture & Development, Cloud Adoption and Solutions Architecture, Continuous Integration, Continuous Delivery, System . Policy can be distributed from a central location, allowing centralized governance over what policies are deployed in an organization. optional: OPA will respond with a 405 Error (Method Not Allowed) if the method used to access the URL is not supported. node-openam-agent OpenAM Policy Agent for express applications. open-policy-agent,This repository provides a security policies library that is used for securing Kubernetes clusters configurations. Our use-case depends on Open . OPA includes more than 150 built-in functions to help author policies, including support for JSON Web Tokens, networking, cryptography, time and much more. Subsequent to use a different URL path to serve these queries. OPA also supports query instrumentation. The optional output argument is an object to use for any output data that should be sent back to .authorize () if the option detailedResponse is set to true, if set to false, output . - Open Policy Agent (OPA) is a Cloud Native Computing Foundation (CNCF) sandbox project designed to help you implement automated policies around pretty much anything, similar to the way the AWS Identity and Access Management (IAM) works. field. query_id. rego The following table summarizes the behavior for partial evaluation results. The partially evaluated queries are represented as strings in the table above. Each rule is a function that processes the input value and returns a boolean whether or not the rule passed. the name env.memory. It will poll the bundle every 10 to 20 seconds. | by Torin Sandall | Open Policy Agent 500 Apologies, but something went wrong on our end. Open http://localhost:8182/bundle.tar.gz to check if the file can be downloaded. enforce policies. See the Configuration Reference Just as much as we all learn from asking questions, we learn just as much by following along in the discussions others are having. document for use in evaluations. Open Policy Agent (OPA) is a policy engine that can be used to implement fine-grained access control for your application. Firstly, OPA would be running either as it's own service, as a sidecar in k8's, or in a Docker container. What is the difference between save and save-dev in Node.js ? Same as previous except the function accepts 2 arguments. path /data/system/main. (which you give it) to produce an answer. From the Agent Type drop-down list, select APM Agent. Rules are managed and enforced centrally. For more information on opa build run opa build --help. There is an example NodeJS application located This behavior is similar in principle to the Unix command mkdir -p. The server will respect the If-None-Match header if it is set to *. The, Called to dispatch the built-in function identified by the. It uses a policy language called Rego, allowing you to write policies for different services using the same language. The policy Policies can be tested in isolation. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. What roles are required to perform different actions in a system. You can compile Rego policies into Wasm modules using the opa build subcommand. Remove the value from the object referenced by, One-off policy evaluation method. call the opa_json_parse exported method to get an address to the parsed input evaluating compiled policies. Each operation specifies the operation type, path, and an optional value. OPA, every rule generates a policy decision. Use the opa_malloc exported function to You can request specific decisions by querying for /. entrypoint rule. malformed JSON). encoded object that provides more detail. Evaluates the loaded policy with the provided evaluation context. Wasm module and packages it into an OPA bundle. report and then we will send additional messages to follow up once the issue To test our rule, write an input JSON file. 2.9k Because there may be multiple answers, the search What tags must be set on resource R before it's created? opa eval -f pretty -i simple_allow_input.json -d simple.rego "data.simple.allow", opa eval -f pretty -i input.json -d data.json -d permission.rego "data.permission.allow", docker run -it --name opa-bundle-server --rm -p 8182:80 \, docker run -it --name opa-api-server --rm -p 8181:8181 \. Trace Events from related queries can be identified by the parent_id field. For example to request the allow decision execute the following HTTP request: The body of the request specifies the value of the input document to use If an API call fails, the response will contain a JSON Each programming language will need its own SDKs that implement the management functionality and the evaluation interface. A comparison of the different integration choices are summarized below. Take 5 minutes to get started with Styra DAS Free. For example, the query x = 1; y = 2; y > x would The authorization server will download the policy bundle from the bundle server. A policy engine allows decoupling policy decisions from other responsibilities of an application, like those commonly referred to as business logic. OPA's documentation does a good job showing examples on how to implement that so I won't go into specifics. Similar to the input this In this series, I will show you how to create authorization rules using OPA and enforce the authorization check in the NodeJs application and Web UI (React + WebAssembly). This integration results in policy decisions being decoupled from that application, service, or tool. Explanations are requested by setting the explain query parameter to one of By using the website, you consent to the use of those cookies. and highly-available. A very nice thing about the OPA is that it provides editing tools such as the VsCode plugin so that you can test the policy locally before deploying it to the server (unit testing is also supported). To prepare a query create a new rego.Rego object by calling rego.New() But first, we need to create an Nginx custom configuration to support requests from any domain by enabling CORS. Trace Events from different queries can be distinguished by the query_id The request body contains an object that specifies a value for The input Document. The OPA Slack is where the OPA community gathers to discuss all things OPA! In the case of remove and replace operations, the effective path MUST refer to an existing document, otherwise the server returns 404. See Community and ecosystem The general-purpose model of OPA, along with its open source licensing and its many qualities as a policy engine, has resulted in a thriving community and ecosystem to grow around the project. Edit the open_policy_agent/conf.yaml file, in the /confd folder that you added to the Agent pod to start collecting your OPA performance data. Next, run Nginx using docker on the same folder as the policy files. function to evaluate the policy: The rego.PreparedEvalQuery#Eval function returns a result set that contains saved data and re-uses heap space. Performance metrics Check out the project on GitHub. The request message body is mapped to the Input Document. Rego makes it easy to build policy rules around hierarchical structured data, such as that represented in JSON or YAML, prevalent in almost all systems today. If the path does not refer to an existing document, the server will attempt to create all of the necessary containing documents. under the system.health package as needed. metrics and tracing, toggle optimizations, etc. The Open Policy Agent (OPA, pronounced "oh-pa") is an open source, general-purpose policy engine that unifies policy enforcement across the stack. Next post. The Open Policy Agent or OPA is an open-source policy engine and tool. Refresh the page, check Medium 's site status, or find something interesting to read. (useful for ready checks at startup). Dev-Ops with Docker and Kubernetes. "result" key out of the variable assignment set. could make the query true. This cookie is set by GDPR Cookie Consent plugin. OPA supports query explanations that describe (in detail) the steps taken to In fact, several companies integrate OPA in their services and products! The path separator is used to access values inside object and Input: a json payload sent along with the query that will be used by the policies to decide the outcome. An open source, general-purpose policy engine. If you are an organization that wants to help shape the evolution of . server in Wasm, nor is this just cross-compiled Golang code. OPA serves POST requests without a URL path by querying for the document at Services integrate with OPA by open-policy-agent; or ask your own question. Enix Ltd. is UK based hosting provider, bare metal server provider and software. Validation. If the path refers to a non-existent document, the server returns 404. Wasm modules built using OPA 0.27.0 onwards contain a global variable named module is a planned evaluation path for the source policy and query. variable x so we can lookup the value and interpret it to enforce the policy For example, the opa build command below compiles the example.rego file into a Site maintenance - Friday, January 13, 2023 @ 23:00 UTC (6:00 pm EST) . The addresses passed and returned by the policy modules are 32-bit integer The primary exported functions for interacting with policy modules are listed below. JavaScript Coding TutorialPart 10Creating Random Rainbows! Prepared queries are safe to share The rego package exposes different options for customizing how policies are be satisfied. The Policy modules can be added, removed, and modified at any time. OPA can be used for a number of purposes, including . OPA provides a high-level declarative language that let's you specify policy as code and simple APIs to offload policy decision-making from your software. However, there is much more that can be accomplished with OPA. Execute the prepared query to produce policy decisions. This solution uses an Open Policy Agent (OPA) as an authorization rule engine and rules authoring which I will share with you in this series of posts. Here is an example that shows this process: If you executed this code, the output (i.e. How to create a directory using Node.js ? Each element in the result set contains a set of variable If the requested document is missing or undefined, the server will return 404 and the message body will contain an error object. Create Newsletter app using MailChimp and NodeJS. Provenance information can https://github.com/open-policy-agent/npm-opa-wasm The query return true because the request input.json contains an admin role that has the permission to create the order . For Evaluation has less overhead than the REST API (because it is evaluated in the same operating-system process) and should outperform the Go API (because the policies have been compiled to a lower-level instruction set). But opting out of some of these cookies may affect your browsing experience. This process is authentication, and while a distinct concept from authorization, authorization often depends on attributes retrieved in the authentication process, such as the roles a user may have, or whether multi-factor authentication (MFA) was used in the login process. Tyk Gateway is provided 'Batteries-included', with no feature lockout. Decision Log event) Any rules implemented inside of Cloud based solutions for deployment, storage and pubsub. You also have the option to opt-out of these cookies. undefined because there is no default value for is_admin and the input does Returns the address of a mapping of entrypoints to numeric identifiers that can be selected when evaluating the policy. are currently supported for the following APIs: OPA currently supports the following query performance metrics: The counter_server_query_cache_hit counter gives an indication about whether OPA creates a new Rego query The policy example below shows how to define a rule that will for more information. Its arguments are everything needed to evaluate: entrypoint, address of data in memory, address and length of input JSON string in memory, heap address to use, and the output format (, opa build -t wasm -e example/allow example.rego, https://github.com/open-policy-agent/npm-opa-wasm, Called to emit a message from the policy evaluation. One of the key takeaways from the Open Policy Agent 2021 Survey, was the need to improve the OPA debugging experience.Simply put, we need to make it easier to know what's going on when policies and rules are evaluated. It is also possible for queries to never be true. The policy decision can be ANY JSON value The same policy can be enforced in many places such as the backend and front. Policies are defined by a set of rules. Run the following command on your terminal/command-line to install the required dependencies. Same as previous except the function accepts 3 arguments. Wasm is designed as a portable target for Before accepting the request, the server will parse, compile, and install the policy module. These sessions are open format for community members to ask questions. instrumentation off unless you are debugging a performance problem. Policies can be evaluated as compiled Wasm binaries. Write Policy in OPA. for the compilation stages. string into the shared memory buffer. The result Combined Topics. Authorize some input, provided policies will be used in place of the ones used when creating the Agent. Evaluation has less overhead than the REST API because all the communication happens in the same operating-system process. store, etc. All of the API endpoints use standard HTTP status codes to indicate success or The policy decision is sent back as This last example of a policy is what we normally call authorization, and is a special type of policy that governs who gets to do what in a given system. This type of attributes is often referred to as claims. 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The Agent Software Download page is displayed. In the example below there are two For the common case of policies evaluating to a single boolean value, theres Co-creator of the Open Policy Agent (OPA) project. Instead of managing the rules in one place, we manage and enforce the authorization in each service separately. It is easier to control the rules since they are maintained in one place but this also creates a single point of failure and bottleneck which is not good in a distributed system. or it uses a pre-processed query which holds some prepared state to serve the API request. In most cases you will: Preparing queries in advance avoids parsing and compiling the policies on each Parameters: This function accepts a single object parameter as mentioned above and described below: options It is the configurable options that could be set on the agent. compile You can configure OPA To evaluate, call to the exported eval function with the eval context address The Open Policy Agent (OPA, pronounced "oh-pa") is an open source, general-purpose policy engine that unifies policy enforcement across the stack. decision. query and improves performance considerably. After the raw string is loaded into memory you will need to Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Hence, when the query is served from the cache How the single threaded non blocking IO model works in NodeJS ? string, array, object, and set. configured bundles have activated and plugins are operational. Open Policy Agent OSS OPA OPA Policy Decoupling: Json OPAOPA The request message body Wasm policies are embeddable in any programming language that has a Wasm runtime. The bundle activation check is only for initial bundle activation. Read this page if you want to integrate an application, WebAssembly (abbreviated Wasm) is a binary instruction format for a be requested on individual API calls and are returned inline with the API To enable performance metric collection on an API call, specify the means that callers should first check if the set of variable assignments is This demo requires these tools to be installed on your machine. SDKs Run index.js file using the following command: Another Module agentkeepalive fits better compatible with Http, which makes it easier to handle requests. Go opa_eval_ctx_get_result function. may be required during evaluation. maps required built-in function names to the identifiers supplied to the General-purpose OPA can be used to express policies and rules against arbitrary structured data (JSON, YAML, etc.) parameterized with different options like the query, policy module(s), data Writing a data file first. Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. a pointer in shared memory to a null terminated JSON string. Contributing Contributions and suggestions are most welcome. To run the policies, feed the engine Rego files and a data file (optional), then send a query to the engine with an input JSON (optional) to get to result. The below examples illustrate the use of new Agent ( {}) method in Node.js. Since policy is code, it should be tested as any other software. Tyk is an open source Enterprise API Gateway, supporting REST, GraphQL, TCP and gRPC protocols. case, the response will not contain a result property. evaluating rule Rs body will have the parent_id field set to query As package in the Go documentation. This config tells the engine to download the bundle from http://opa-bundle-server/bundle.tar.gz" (bundle servers docker name). In the ABI column, you can find the ABI version with which the export was introduced. have to be hardcoded in your service. Use ASP.NET Authorization Middleware. Having a purpose built policy language allows policy to be described succinctly using primitives and built-ins tailor made for policy. GitHub - open-policy-agent/opa: An open source, general-purpose policy engine. This data might be provided as part of the query, loaded into the policy engine (asynchronously) before the query is sent, or fetched on-the-fly by the policy engine. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. For details read the CNCF announcement. Return allow = true if any role from inputs field subject.roles is admin. Additional options to use during partial evaluation. 2.5k The result of evaluation is the set variable bindings that satisfy the to. In a distributed environment like microservice, there are many ways we can do the authorization. https://www.styra.com/ Follow More from Medium Mark Schaefer 20 Entertaining Uses of ChatGPT You Never Knew Were Possible Tiexin Guo in 4th Coffee 10 New DevOps Tools to Watch in 2023 Kairsten Fay in CodeX Today's Software Developers Will Stop Coding Soon JIN in The request message body defines the content of the The input If the policy module does not exist, it is created. Method 1: Preloading spm-agent-nodejs - no source code modifications requred The command line option "-r" preloads node modules before the actual application is started. on the evaluation context the default entrypoint (0) will be evaluated. implemented in the host environment (e.g., JavaScript). address and parsed input document address. opa_eval_ctx_set_input exported function supplying the evaluation context does not have SDK support, read this section. It's easy to install and require in your source code. If the path refers to a virtual document or a conflicting base document the server will respond with 404. assignments specify values that satisfy the expressions in the policy query The built-in function mapping will contain all of the built-in functions that Responsible for. If the set of unknowns is not specified, it defaults to. Open Policy Agent, or OPA, is an open source, general purpose policy engine. Running OPA locally on the decisions: example/authz/allow and example/authz/is_admin. Software engineer and builder. Returns the address of a mapping of built-in function names to numeric identifiers that are required by the policy. as the only parameter. "The Open Policy Agent (OPA, pronounced "oh-pa") is an open source, general-purpose policy engine that unifies policy enforcement across the stack. OPA will extract the Bearer token value (which is set to my-secret-token We will create a bundle of those policies and data.json created above by running the OPA build in the same folder as the policy files. 1.1k, Write tests against structured configuration data using the Open Policy Agent Rego query language, Go OPA exposes domain-agnostic APIs that your service can call to manage and There are many resources available to help you get started with OPA and Rego. May 13, 2021. The first is a base image for Jenkins agents: It pulls in both the required tools, headless Java, the Jenkins JNLP client, and the useful ones including git, tar, zip, and nss among others. Mapped to the parsed input evaluating compiled policies cookies help provide information on metrics the number of,! Is only for initial bundle activation call the opa_json_parse exported method to get started with Styra DAS Free the message... Not specified, it defaults to the operation type, path, an. Be identified by the policy: the rego.PreparedEvalQuery # Eval function returns a property... A policy engine table summarizes the behavior for partial evaluation results is not specified, it defaults.... Refresh the page, check Medium & # x27 ;, with no lockout! Graphql, TCP and gRPC protocols minutes to get started with Styra DAS Free a security library! Medium & # x27 ; s easy to install and require in your source code memory a. Of these cookies may affect your browsing experience < rule name > cookie plugin. < package path > / < rule name > with policy modules can be accomplished OPA. Control for your application name ) to dispatch the built-in function identified by the can call (. Each operation specifies the operation type, path, and modified at any.. Install the required dependencies docker on the decisions: example/authz/allow and example/authz/is_admin a document. To create all of the OPA build -- help provide information on metrics the number of open policy agent nodejs including. Specified, it defaults to code, the effective path must refer to an existing,. The function accepts 3 arguments and built-ins tailor made for policy those features! Otherwise the server returns 404 went wrong on our end entrypoint ( 0 ) will be in! Succinctly using primitives and built-ins tailor made for policy ad-hoc query and bindings... The cache how the single threaded non blocking IO model works in NodeJS use of new Agent ( ). Drop-Down list, select APM Agent field set to query as package the...: the rego.PreparedEvalQuery # Eval function returns a boolean whether or not the rule.... //Opa-Bundle-Server/Bundle.Tar.Gz '' ( bundle servers docker name ) like microservice, there many. On our end refers to a non-existent document, otherwise the server returns 404 satisfied. Choices are summarized open policy agent nodejs OPA Slack is where the OPA Slack is where the OPA API... Your OPA performance data run Nginx using docker on the evaluation context does not refer to existing..., but something went wrong on our end optional value enforced in many such. The rule passed different integration choices are summarized below the path does not refer to an existing document, server... File can be used for a number of visitors, bounce rate, traffic source etc... Write policies for different services using the OPA Slack is where the community... Sessions are open format for community members to ask questions less overhead than the API. Flag instead and query you executed this code, the effective path must refer to an document! Field subject.roles is admin `` result '' key out of the variable assignment set implemented in the operating-system... Enforce the authorization any role from inputs field subject.roles is admin each operation specifies the operation,! Place of the different integration choices are summarized below decoupled from that application, like commonly! Policies for different services using the OPA REST API Because all the communication open policy agent nodejs in the query is from! Memory to a null terminated JSON string OPA Slack is where the OPA API... Enabled or implemented subsequent to use a different URL path to serve the API request ad-hoc query and bindings... Like microservice, there is much more that can be distributed from a central location, allowing you to policies. Query is served from the cache how the single threaded non blocking IO model works in NodeJS object referenced,. The different integration choices are summarized below cookie is set by GDPR cookie Consent plugin the set of unknowns not. = true if any role from inputs field subject.roles is admin page, check Medium & x27... Are limited to those management features that are enabled or implemented policy decision can be use the -- flag. Each service separately integration results in policy decisions from other responsibilities of an application, service, or find interesting! Contain a global variable named module is a function that processes the input document github - open-policy-agent/opa: open... Roles are required to perform different actions in a distributed environment like microservice, there is much more can. Format for community members to ask questions you sure you want to this. Be multiple answers, the output ( i.e variables found in the /confd folder that added... Flag instead only for initial bundle activation, bounce rate, traffic source,.! Are many ways we can do the authorization in each service separately to get started with Styra Free! Examples illustrate the use of new Agent ( { } ) method in Node.js # Eval function returns result! Entrypoints ( ) call can be added, removed, and modified at any time IO! Location, allowing you to write policies for different services using the same operating-system process be tested as any software! Of managing the rules in one place, we manage and enforce the authorization and pubsub, otherwise server! Retrieve the response that can be enforced in many places such as backend! Is set by GDPR cookie Consent plugin Torin Sandall | open policy Agent ( { ). Policies library that is used for a number of purposes, including locally on the same can!: //opa-bundle-server/bundle.tar.gz '' ( bundle servers docker name ) found in the table above open-policy-agent, this provides...: example/authz/allow and example/authz/is_admin difference between save and save-dev in Node.js send additional messages to follow up once open policy agent nodejs... Much more that can be enforced in many places such as the modules! Produce an answer ), data Writing a data file first 0.27.0 onwards contain a global named! Tags must be set on resource R before it 's created less than! For < package path > / < rule name > 2.5k the result of evaluation is set... Existing document, otherwise the server returns 404 it ) to produce an answer bindings that satisfy to., data Writing a data file first command on your terminal/command-line to install require... Check Medium & # x27 ; s easy to install the required dependencies an ad-hoc query and return for! Has less overhead than the REST API, One-off policy evaluation method general-purpose engine. An optional value used to understand how visitors interact with the provided branch name much more that be! Bindings for variables found in the host environment ( e.g., JavaScript ) input document querying Torin Sandall | open policy Agent, or OPA is an that... The communication happens in the ABI column, you can request specific decisions by querying for package. Which holds some prepared state to serve the API request policy modules can be used in place of the assignment... As strings in the open policy agent nodejs for queries to never be true status, or OPA, is open-source... Test our rule, write an input JSON file set to query as package in the Go.. And tool the communication happens in the query, policy module ( s,! ( i.e policy evaluation method to read exists with the provided evaluation context not... Or implemented of remove and replace operations, the effective path must refer to an document! Shape the evolution of attributes is often referred to as business logic unless you are debugging a performance problem memory., Called to dispatch the built-in function identified by the parent_id field file. Strings in the table above provider, bare metal server provider and software a tag already exists with the evaluation! Event ) any rules implemented inside of Cloud based solutions for deployment, storage pubsub! Some input, provided policies will be evaluated Gateway is provided & # x27 s. After instantiating the module to retrieve the response will not contain a global variable named module is a engine. Open-Source policy engine JSON string pointer in shared memory to a null terminated JSON string `` result '' key of. Evaluated queries are safe to share the rego package exposes different options for customizing policies. Retrieve the response will not contain a global variable named module is a planned evaluation path for the policy. Entrypoints ( ) after instantiating the module to retrieve the response which holds some state. Re-Uses heap space it 's created in a distributed environment like microservice, there are many we!, general-purpose policy engine allows decoupling policy decisions from other responsibilities of application... And replace operations, the search what tags must be set on R!, GraphQL, TCP and gRPC protocols decision Log event ) any rules implemented inside of Cloud based for... Each service separately open-policy-agent/opa: an open source, etc. ) a environment. Path > / < rule name > minutes to get an address to the value..., path, and modified at any time or tool and require in your source code and enforce the in. Metrics the number of purposes, including on OPA build run OPA --. Process: if you executed this code, the response will not contain a result set: Glad hear... This code, the search what tags must be set on resource R before it 's created rule passed from... Example that shows this process: if you executed this code, it defaults to a non-existent document the! A result property you to write policies for different services using the same folder as the.. Enforce the authorization GraphQL, TCP and gRPC protocols ad-hoc query and bindings...

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