Merging upstream version 1.44.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 63 insertions, 0 deletions

diff --git a/fluent-bit/examples/filter_wasm_go/README.md b/fluent-bit/examples/filter_wasm_go/README.md
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+# Fluent Bit / filter_wasm_go
+
+This source source tree provides an example of WASM filter program with WASI mode.
+
+## Prerequisites
+
+Tested on
+
+* TinyGo
+  * [tinygo](https://tinygo.org/) tinygo version 0.23.0 linux/amd64 (using go version go1.18.2 and LLVM version 14.0.0)
+  * [tinygo](https://tinygo.org/) tinygo version 0.24.0 linux/amd64 (using go version go1.18.2 and LLVM version 14.0.0)
+
+For Ubuntu, it's easy to install with:
+
+```console
+$ wget https://github.com/tinygo-org/tinygo/releases/download/v0.24.0/tinygo_0.24.0_amd64.deb
+$ sudo dpkg -i tinygo_0.24.0_amd64.deb
+```
+
+## How to build
+
+Execute _tinygo build_ as follows:
+
+```console
+$ tinygo build -wasm-abi=generic -target=wasi -o filter.wasm filter.go
+```
+
+Finally, under the same directory, `*.wasm` file will be created:
+
+```console
+$ ls *.wasm
+filter.wasm
+```
+
+## How to confirm WASM filter integration
+
+Create fluent-bit configuration file as follows:
+
+```ini
+[SERVICE]
+    Flush        1
+    Daemon       Off
+    Log_Level    info
+    HTTP_Server  Off
+    HTTP_Listen  0.0.0.0
+    HTTP_Port    2020
+
+[INPUT]
+    Name dummy
+    Tag dummy.local
+
+[FILTER]
+    Name wasm
+    match dummy.*
+    WASM_Path /path/to/filter.wasm
+    Function_Name go_filter
+    accessible_paths .,/path/to/fluent-bit
+
+[OUTPUT]
+    Name  stdout
+    Match *
+
+```