NATIVE LANGUAGES (C/C++, RUST, …) • ASSEMBLY-LIKE TEXTUAL REPRESENTATION (WAT) • WASM = WEBASSEMBLY STRUCTURE OF A WASM-FILE • MULTIPLE SECTIONS: • IMPORT • GLOBALS • FUNCTION-TYPES • CODE • DATA PARENT (EXCEPT IN CIRCLES) • DEPENDENCIES ARE EVALUATED IN ORDER OF OCCURRENCE (IMPORTS) ADDING WASM TO WEBPACK THE STORY • SO WE WANT TO ADD WEBASSEMBLY SUPPORT TO WEBPACK. • HOW TO DO THAT? • LET’S MOZILLA SPONSORSHIP • WE GOT A SPONSORSHIP FROM MOZILLA TO WORK ON THAT • SEEMS LIKE THEY WANT TO PUSH WASM AND RUST FORWARD • THIS CAN COVER A PART OF THE IMPLEMENTATION COST GOALS • EASY TO USE • HIDE

#IstioCon Extending service mesh capabilities using a streamlined way based on WASM and ORAS 王夕宁 | 阿里云服务网格ASM 2 Envoy’s Filter Chain Listener Downstre am Filter Filter Filter Cluster Upstrea envoy.http _connectio n_manage r Cluster Productp age服务 Filter Chain envoy.filters.ht tp.wasm/envo y.wasm.metad ata_exchange Istio_authn kubectl exec -it [productpage-xxx] -c istio-proxy curl loc envoy.filters .http.fault envoy.filters .http.router envoy.filters.ht tp.wasm/envo y.wasm.stats envoy.filters.ht tp.wasm/xxx- wasmfilter 5 添加新Filter的方式 ● Built-in Filter & Community Provided: ○

potentially untrusted file size Severity: Low Difficulty: High Fixed: Yes Affected components: ● pkg/wasm Vectors: ● CWE-400: Uncontrolled Resource Consumption ● CWE-770: Allocation of Resources Without Limits or Throttling ID: ADA-IST-4 Fix: https://github.com/istio/istio/pull/41894 Description The WASM fetchers allocate byte slices of a length determined by potentially untrusted data. This could lead m/httpfetcher.go#L138 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 // wasm plugin should be the only file in the tarball. func getFirstFileFromTar(b []byte) []byte { buf :=

applications Products that use Kotlin on the server side Next steps Kotlin for Android Kotlin Wasm Browser support Interoperability Compose Multiplatform for Web How to get started Libraries support IDE support New Kotlin K2 compiler updates Kotlin/JVM Kotlin/Native Kotlin Multiplatform Kotlin/Wasm Gradle Standard library Documentation updates Install Kotlin 1.9.20 What's new in Kotlin 1.9 New Kotlin K2 compiler updates Language Kotlin/JVM Kotlin/Native Kotlin Multiplatform Kotlin/Wasm Kotlin/JS Gradle Standard library Documentation updates Install Kotlin 1.9.0 Compatibility guide

API Gateway Security (EW) Observability Zero-trust Approval Processes Rollback Delegation WASM Multi Cluster Global Service Failover Multi Mesh 4 | Copyright © 2020 Orders Citadel Pilot © 2020 Extend Envoy Proxy with Web Assembly (Wasm) Polyglot: Envoy Filters are written in C++ and Wasm expands to any language Secure and Reliable: Wasm runs in isolated VM, can dynamically update need to recompile and maintain a build of Envoy EXTERNAL AUTH RATE LIMITING ROUTER UPSTREAM WASM gRPC TRANSCODER Why WebAssembly? 8 | Copyright © 2020 8 | Copyright © 2020 User Experience

Container Platform 4.8.12 和 OpenShift Container Platform 4.9。 1.2.2.12.4. Service Mesh WebAssembly(WASM)扩展 ServiceMeshExtensions 自定义资源定义(CRD)现已正式发布，它首次作为技术预览功能在版本 2.0 中 推出。您可以使用 CRD 构建自己的插件，但红帽并不支持您创建的插件。 Mixer，则会阻止从 Service Mesh 2.0.x 升级到 2.1。 混合器插件需要移植到 WebAssembly 扩展。 1.2.2.12.5. 3scale WebAssembly Adapter(WASM) Mixer 现已正式删除，OpenShift Service Mesh 2.1 不支持 3scale 混合器适配器。在升级到 Service Mesh 2.1 之前，删除基于 Mixer 的 始，为保持与 OpenShift Container Platform 4.8 的兼容性，apiextensions.k8s.io/v1beta1 API 已被弃用。 MAISTRA-2631 WASM 功能不起作用，因为 podman 因 nsenter 二进制不存在而失败。Red Hat OpenShift Service Mesh 生成以下出错信息：Error: error configuring

@wasmMemorySize(index: u32) u32 This function returns the size of the Wasm memory identified by index as an unsigned value in units of Wasm pages. Note that each Wasm page is 64KB in size. This function is a low level level intrinsic with no safety mechanisms usually useful for allocator designers targeting Wasm. So unless you are writing a new allocator from scratch, you should use something like @import("std").heap.WasmPageAllocator u32) i32 This function increases the size of the Wasm memory identified by index by delta in units of unsigned number of Wasm pages. Note that each Wasm page is 64KB in size. On success, returns previous

@wasmMemorySize(index: u32) u32 This function returns the size of the Wasm memory identified by index as an unsigned value in units of Wasm pages. Note that each Wasm page is 64KB in size. This function is a low level level intrinsic with no safety mechanisms usually useful for allocator designers targeting Wasm. So unless you are writing a new allocator from scratch, you should use something like @import("std").heap.WasmPageAllocator u32) i32 This function increases the size of the Wasm memory identified by index by delta in units of unsigned number of Wasm pages. Note that each Wasm page is 64KB in size. On success, returns previous

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3 Using MuPDF WASM 21 3.1 Installing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MuPDF Documentation, Release 1.23.0 20 Chapter 2. Using MuPDF with C CHAPTER THREE USING MUPDF WASM 3.1 Installing • From the command line, select the folder you want to work from and do: npm install annot.setLineEndingStyles("None", "ClosedArrow") (continues on next page) 22 Chapter 3. Using MuPDF WASM MuPDF Documentation, Release 1.23.0 (continued from previous page) annot = page.createAnnotation("Highlight")

x: u32) u32 This function returns the size of the Wasm memory identified by index as an unsigned value in units of Wasm pages. Note that each Wasm page is 64KB in size. This function is a low level level intrinsic with no safety mechanisms usually useful for allocator designers targeting Wasm. So unless you are writing a new allocator from scratch, you should use something like @import("std").heap.WasmPageAllocator u32) i32 This function increases the size of the Wasm memory identified by index by delta in units of unsigned number of Wasm pages. Note that each Wasm page is 64KB in size. On success, returns previous