thin_edge_json: Remove usage of json-writer

This patch removes the json-writer from being used in the thin_edge_json
crate.
It does so by rewriting the `thin_edge_json::serialize` backend using
`serde::Serialize` types instead of manual JSON constructing.

Signed-off-by: Matthias Beyer <matthias.beyer@ifm.com>

3 files changed, 244 insertions, 243 deletions

diff --git a/Cargo.lock b/Cargo.lock
index a158475f..978cf956 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -50,9 +50,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.58"
+version = "1.0.62"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb07d2053ccdbe10e2af2995a2f116c1330396493dc1269f6a91d0ae82e19704"
+checksum = "1485d4d2cc45e7b201ee3767015c96faa5904387c9d87c6efdd0fb511f12d305"
 
 [[package]]
 name = "argh"
@@ -72,9 +72,9 @@ checksum = "69f2bd7ff6ed6414f4e5521bd509bae46454bbd513801767ced3f21a751ab4bc"
 dependencies = [
  "argh_shared",
  "heck 0.3.3",
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -105,9 +105,9 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "726535892e8eae7e70657b4c8ea93d26b8553afb1ce617caee529ef96d7dee6c"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
  "synstructure",
 ]
 
@@ -117,9 +117,9 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2777730b2039ac0f95f093556e61b6d26cebed5393ca6f152717777cec3a42ed"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -154,9 +154,9 @@ checksum = "9b34d609dfbaf33d6889b2b7106d3ca345eacad44200913df5ba02bfd31d2ba9"
 
 [[package]]
 name = "async-channel"
-version = "1.6.1"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2114d64672151c0c5eaa5e131ec84a74f06e1e559830dabba01ca30605d66319"
+checksum = "e14485364214912d3b19cc3435dde4df66065127f05fa0d75c712f36f12c2f28"
 dependencies = [
  "concurrent-queue",
  "event-listener",
@@ -201,20 +201,20 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "10f203db73a71dfa2fb6dd22763990fa26f3d2625a6da2da900d23b87d26be27"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
 name = "async-trait"
-version = "0.1.56"
+version = "0.1.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96cf8829f67d2eab0b2dfa42c5d0ef737e0724e4a82b01b3e292456202b19716"
+checksum = "76464446b8bc32758d7e88ee1a804d9914cd9b1cb264c029899680b0be29826f"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -352,9 +352,9 @@ checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
 [[package]]
 name = "bytes"
-version = "1.2.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0b3de4a0c5e67e16066a0715723abd91edc2f9001d09c46e1dca929351e130e"
+checksum = "ec8a7b6a70fde80372154c65702f00a0f56f3e1c36abbc6c440484be248856db"
 
 [[package]]
 name = "c8y_api"
@@ -395,7 +395,7 @@ dependencies = [
  "assert_matches",
  "c8y_api",
  "c8y_smartrest",
- "clap 3.2.14",
+ "clap 3.2.17",
  "csv",
  "download",
  "mockall",
@@ -424,7 +424,7 @@ dependencies = [
  "assert_matches",
  "c8y_api",
  "c8y_smartrest",
- "clap 3.2.14",
+ "clap 3.2.17",
  "csv",
  "easy_reader",
  "filetime",
@@ -549,9 +549,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "3.2.14"
+version = "3.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54635806b078b7925d6e36810b1755f2a4b5b4d57560432c1ecf60bcbe10602b"
+checksum = "29e724a68d9319343bb3328c9cc2dfde263f4b3142ee1059a9980580171c954b"
 dependencies = [
  "atty",
  "bitflags",
@@ -566,15 +566,15 @@ dependencies = [
 
 [[package]]
 name = "clap_derive"
-version = "3.2.7"
+version = "3.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "759bf187376e1afa7b85b959e6a664a3e7a95203415dba952ad19139e798f902"
+checksum = "13547f7012c01ab4a0e8f8967730ada8f9fdf419e8b6c792788f39cf4e46eefa"
 dependencies = [
  "heck 0.4.0",
  "proc-macro-error",
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -607,9 +607,9 @@ dependencies = [
 
 [[package]]
 name = "concurrent-queue"
-version = "1.2.2"
+version = "1.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "30ed07550be01594c6026cff2a1d7fe9c8f683caa798e12b68694ac9e88286a3"
+checksum = "af4780a44ab5696ea9e28294517f1fffb421a83a25af521333c838635509db9c"
 dependencies = [
  "cache-padded",
 ]
@@ -758,12 +758,12 @@ dependencies = [
 
 [[package]]
 name = "ctor"
-version = "0.1.22"
+version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f877be4f7c9f246b183111634f75baa039715e3f46ce860677d3b19a69fb229c"
+checksum = "cdffe87e1d521a10f9696f833fe502293ea446d7f256c06128293a4119bdf4cb"
 dependencies = [
- "quote 1.0.20",
- "syn 1.0.98",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -844,9 +844,9 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3bf95dc3f046b9da4f2d51833c0d3547d8564ef6910f5c1ed130306a75b92886"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -935,9 +935,9 @@ dependencies = [
 
 [[package]]
 name = "event-listener"
-version = "2.5.2"
+version = "2.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77f3309417938f28bf8228fcff79a4a37103981e3e186d2ccd19c74b38f4eb71"
+checksum = "0206175f82b8d6bf6652ff7d71a1e27fd2e4efde587fd368662814d6ec1d9ce0"
 
 [[package]]
 name = "fastrand"
@@ -1030,9 +1030,9 @@ checksum = "2022715d62ab30faffd124d40b76f4134a550a87792276512b18d63272333394"
 
 [[package]]
 name = "futures"
-version = "0.3.21"
+version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f73fe65f54d1e12b726f517d3e2135ca3125a437b6d998caf1962961f7172d9e"
+checksum = "ab30e97ab6aacfe635fad58f22c2bb06c8b685f7421eb1e064a729e2a5f481fa"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -1045,9 +1045,9 @@ dependencies = [
 
 [[package]]
 name = "futures-channel"
-version = "0.3.21"
+version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3083ce4b914124575708913bca19bfe887522d6e2e6d0952943f5eac4a74010"
+checksum = "2bfc52cbddcfd745bf1740338492bb0bd83d76c67b445f91c5fb29fae29ecaa1"
 dependencies = [
  "futures-core",
  "futures-sink",
@@ -1055,15 +1055,15 @@ dependencies = [
 
 [[package]]
 name = "futures-core"
-version = "0.3.21"
+version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c09fd04b7e4073ac7156a9539b57a484a8ea920f79c7c675d05d289ab6110d3"
+checksum = "d2acedae88d38235936c3922476b10fced7b2b68136f5e3c03c2d5be348a1115"
 
 [[package]]
 name = "futures-executor"
-version = "0.3.21"
+version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9420b90cfa29e327d0429f19be13e7ddb68fa1cccb09d65e5706b8c7a749b8a6"
+checksum = "1d11aa21b5b587a64682c0094c2bdd4df0076c5324961a40cc3abd7f37930528"
 dependencies = [
  "futures-core",
  "futures-task",
@@ -1072,32 +1072,32 @@ dependencies = [
 
 [[package]]
 name = "futures-io"
-version = "0.3.21"
+version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc4045962a5a5e935ee2fdedaa4e08284547402885ab326734432bed5d12966b"
+checksum = "93a66fc6d035a26a3ae255a6d2bca35eda63ae4c5512bef54449113f7a1228e5"
 
 [[package]]
 name = "futures-macro"
-version = "0.3.21"
+version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33c1e13800337f4d4d7a316bf45a567dbcb6ffe087f16424852d97e97a91f512"
+checksum = "0db9cce532b0eae2ccf2766ab246f114b56b9cf6d445e00c2549fbc100ca045d"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
 name = "futures-sink"
-version = "0.3.21"
+version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21163e139fa306126e6eedaf49ecdb4588f939600f0b1e770f4205ee4b7fa868"
+checksum = "ca0bae1fe9752cf7fd9b0064c674ae63f97b37bc714d745cbde0afb7ec4e6765"
 
 [[package]]
 name = "futures-task"
-version = "0.3.21"
+version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57c66a976bf5909d801bbef33416c41372779507e7a6b3a5e25e4749c58f776a"
+checksum = "842fc63b931f4056a24d59de13fb1272134ce261816e063e634ad0c15cdc5306"
 
 [[package]]
 name = "futures-timer"
@@ -1107,9 +1107,9 @@ checksum = "e64b03909df88034c26dc1547e8970b91f98bdb65165d6a4e9110d94263dbb2c"
 
 [[package]]
 name = "futures-util"
-version = "0.3.21"
+version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8b7abd5d659d9b90c8cba917f6ec750a74e2dc23902ef9cd4cc8c8b22e6036a"
+checksum = "f0828a5471e340229c11c77ca80017937ce3c58cb788a17e5f1c2d5c485a9577"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -1125,9 +1125,9 @@ dependencies = [
 
 [[package]]
 name = "generic-array"
-version = "0.14.5"
+version = "0.14.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd48d33ec7f05fbfa152300fdad764757cbded343c1aa1cff2fbaf4134851803"
+checksum = "bff49e947297f3312447abdca79f45f4738097cc82b06e72054d2223f601f1b9"
 dependencies = [
  "typenum",
  "version_check",
@@ -1158,9 +1158,9 @@ checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
 
 [[package]]
 name = "h2"
-version = "0.3.13"
+version = "0.3.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37a82c6d637fc9515a4694bbf1cb2457b79d81ce52b3108bdeea58b07dd34a57"
+checksum = "5ca32592cf21ac7ccab1825cd87f6c9b3d9022c44d086172ed0966bec8af30be"
 dependencies = [
  "bytes",
  "fnv",
@@ -1254,7 +1254,7 @@ checksum = "75f43d41e26995c17e71ee126451dd3941010b0514a81a9d11f3b341debc2399"
 dependencies = [
  "bytes",
  "fnv",
- "itoa 1.0.2",
+ "itoa 1.0.3",
 ]
 
 [[package]]
@@ -1310,7 +1310,7 @@ dependencies = [
  "http-body",
  "httparse",
  "httpdate",
- "itoa 1.0.2",
+ "itoa 1.0.3",
  "pin-project-lite",
  "socket2",
  "tokio",
@@ -1407,9 +1407,9 @@ checksum = "b71991ff56294aa922b450139ee08b3bfc70982c6b2c7562771375cf73542dd4"
 
 [[package]]
 name = "itoa"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "112c678d4050afce233f4f2852bb2eb519230b3cf12f33585275537d7e41578d"
+checksum = "6c8af84674fe1f223a982c933a0ee1086ac4d4052aa0fb8060c12c6ad838e754"
 
 [[package]]
 name = "jackiechan"
@@ -1445,9 +1445,9 @@ dependencies = [
 
 [[package]]
 name = "js-sys"
-version = "0.3.58"
+version = "0.3.59"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3fac17f7123a73ca62df411b1bf727ccc805daa070338fda671c86dac1bdc27"
+checksum = "258451ab10b34f8af53416d1fdab72c22e805f0c92a1136d59470ec0b11138b2"
 dependencies = [
  "wasm-bindgen",
 ]
@@ -1469,9 +1469,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.126"
+version = "0.2.132"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
+checksum = "8371e4e5341c3a96db127eb2465ac681ced4c433e01dd0e938adbef26ba93ba5"
 
 [[package]]
 name = "lock_api"
@@ -1588,9 +1588,9 @@ dependencies = [
 
 [[package]]
 name = "mockall"
-version = "0.11.1"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5641e476bbaf592a3939a7485fa079f427b4db21407d5ebfd5bba4e07a1f6f4c"
+checksum = "e2be9a9090bc1cac2930688fa9478092a64c6a92ddc6ae0692d46b37d9cab709"
 dependencies = [
  "cfg-if 1.0.0",
  "downcast",
@@ -1603,14 +1603,14 @@ dependencies = [
 
 [[package]]
 name = "mockall_derive"
-version = "0.11.1"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "262d56735932ee0240d515656e5a7667af3af2a5b0af4da558c4cff2b2aeb0c7"
+checksum = "86d702a0530a0141cf4ed147cf5ec7be6f2c187d4e37fcbefc39cf34116bfe8f"
 dependencies = [
  "cfg-if 1.0.0",
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -1850,9 +1850,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.13.0"
+version = "1.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18a6dbe30758c9f83eb00cbea4ac95966305f5a7772f3f42ebfc7fc7eddbd8e1"
+checksum = "074864da206b4973b84eb91683020dbefd6a8c3f0f38e054d93954e891935e4e"
 
 [[package]]
 name = "oorandom"
@@ -1868,9 +1868,9 @@ checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
 
 [[package]]
 name = "os_str_bytes"
-version = "6.2.0"
+version = "6.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "648001efe5d5c0102d8cea768e348da85d90af8ba91f0bea908f157951493cd4"
+checksum = "9ff7415e9ae3fff1225851df9e0d9e4e5479f947619774677a63572e55e80eff"
 
 [[package]]
 name = "output_vt100"
@@ -1921,22 +1921,22 @@ checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
 [[package]]
 name = "pin-project"
-version = "1.0.11"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78203e83c48cffbe01e4a2d35d566ca4de445d79a85372fc64e378bfc812a260"
+checksum = "ad29a609b6bcd67fee905812e544992d216af9d755757c05ed2d0e15a74c6ecc"
 dependencies = [
  "pin-project-internal",
 ]
 
 [[package]]
 name = "pin-project-internal"
-version = "1.0.11"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "710faf75e1b33345361201d36d04e98ac1ed8909151a017ed384700836104c74"
+checksum = "069bdb1e05adc7a8990dce9cc75370895fbe4e3d58b9b73bf1aee56359344a55"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -2073,9 +2073,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
 dependencies = [
  "proc-macro-error-attr",
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
  "version_check",
 ]
 
@@ -2085,8 +2085,8 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
  "version_check",
 ]
 
@@ -2101,9 +2101,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.40"
+version = "1.0.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd96a1e8ed2596c337f8eae5f24924ec83f5ad5ab21ea8e455d3566c69fbcaf7"
+checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
 dependencies = [
  "unicode-ident",
 ]
@@ -2151,11 +2151,11 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.20"
+version = "1.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3bcdf212e9776fbcb2d23ab029360416bb1706b1aea2d1a5ba002727cbcab804"
+checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
 dependencies = [
- "proc-macro2 1.0.40",
+ "proc-macro2 1.0.43",
 ]
 
 [[package]]
@@ -2236,9 +2236,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.15"
+version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "534cfe58d6a18cc17120fbf4635d53d14691c1fe4d951064df9bd326178d7d5a"
+checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
 dependencies = [
  "bitflags",
 ]
@@ -2310,7 +2310,7 @@ dependencies = [
  "percent-encoding",
  "pin-project-lite",
  "rustls 0.20.6",
- "rustls-pemfile 1.0.0",
+ "rustls-pemfile 1.0.1",
  "serde",
  "serde_json",
  "serde_urlencoded",
@@ -2452,18 +2452,18 @@ dependencies = [
 
 [[package]]
 name = "rustls-pemfile"
-version = "1.0.0"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7522c9de787ff061458fe9a829dc790a3f5b22dc571694fc5883f448b94d9a9"
+checksum = "0864aeff53f8c05aa08d86e5ef839d3dfcf07aeba2db32f12db0ef716e87bd55"
 dependencies = [
  "base64",
 ]
 
 [[package]]
 name = "rustversion"
-version = "1.0.8"
+version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24c8ad4f0c00e1eb5bc7614d236a7f1300e3dbd76b68cac8e06fb00b015ad8d8"
+checksum = "97477e48b4cf8603ad5f7aaf897467cf42ab4218a38ef76fb14c2d6773a6d6a8"
 
 [[package]]
 name = "rusty-fork"
@@ -2479,9 +2479,9 @@ dependencies = [
 
 [[package]]
 name = "ryu"
-version = "1.0.10"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3f6f92acf49d1b98f7a81226834412ada05458b7364277387724a237f062695"
+checksum = "4501abdff3ae82a1c1b477a17252eb69cee9e66eb915c1abaa4f44d873df9f09"
 
 [[package]]
 name = "safemem"
@@ -2557,9 +2557,9 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.140"
+version = "1.0.143"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc855a42c7967b7c369eb5860f7164ef1f6f81c20c7cc1141f2a604e18723b03"
+checksum = "53e8e5d5b70924f74ff5c6d64d9a5acd91422117c60f48c4e07855238a254553"
 dependencies = [
  "serde_derive",
 ]
@@ -2576,22 +2576,22 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.140"
+version = "1.0.143"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f2122636b9fe3b81f1cb25099fcf2d3f542cdb1d45940d56c713158884a05da"
+checksum = "d3d8e8de557aee63c26b85b947f5e59b690d0454c753f3adeb5cd7835ab88391"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.82"
+version = "1.0.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "82c2c1fdcd807d1098552c5b9a36e425e42e9fbd7c6a37a8425f390f781f7fa7"
+checksum = "38dd04e3c8279e75b31ef29dbdceebfe5ad89f4d0937213c53f7d49d01b3d5a7"
 dependencies = [
- "itoa 1.0.2",
+ "itoa 1.0.3",
  "ryu",
  "serde",
 ]
@@ -2603,7 +2603,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
 dependencies = [
  "form_urlencoded",
- "itoa 1.0.2",
+ "itoa 1.0.3",
  "ryu",
  "serde",
 ]
@@ -2628,10 +2628,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f1b95bb2f4f624565e8fe8140c789af7e2082c0e0561b5a82a1b678baa9703dc"
 dependencies = [
  "proc-macro-error",
- "proc-macro2 1.0.40",
- "quote 1.0.20",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
  "rustversion",
- "syn 1.0.98",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -2678,9 +2678,9 @@ dependencies = [
 
 [[package]]
 name = "similar"
-version = "2.1.0"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e24979f63a11545f5f2c60141afe249d4f19f84581ea2138065e400941d83d3"
+checksum = "62ac7f900db32bf3fd12e0117dd3dc4da74bc52ebaac97f39668446d89694803"
 
 [[package]]
 name = "slab"
@@ -2727,15 +2727,15 @@ checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
 [[package]]
 name = "strum_macros"
-version = "0.24.2"
+version = "0.24.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4faebde00e8ff94316c01800f9054fd2ba77d30d9e922541913051d1d978918b"
+checksum = "1e385be0d24f186b4ce2f9982191e7101bb737312ad61c1f2f984f34bcf85d59"
 dependencies = [
  "heck 0.4.0",
- "proc-macro2 1.0.40",
- "quote 1.0.20",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
  "rustversion",
- "syn 1.0.98",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -2751,12 +2751,12 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.98"
+version = "1.0.99"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c50aef8a904de4c23c788f104b7dddc7d6f79c647c7c8ce4cc8f73eb0ca773dd"
+checksum = "58dbef6ec655055e20b86b15a8cc6d439cca19b667537ac6a1369572d151ab13"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
  "unicode-ident",
 ]
 
@@ -2766,9 +2766,9 @@ version = "0.12.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f36bdaa60a83aca3921b5259d5400cbf5e90fc51931376a9bd4a0eb79aa7210f"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
  "unicode-xid 0.2.3",
 ]
 
@@ -2781,7 +2781,7 @@ dependencies = [
  "assert_matches",
  "base64",
  "certificate",
- "clap 3.2.14",
+ "clap 3.2.17",
  "hyper",
  "mockito",
  "mqtt_tests",
@@ -2814,7 +2814,7 @@ dependencies = [
  "assert-json-diff",
  "assert_cmd",
  "async-trait",
- "clap 3.2.14",
+ "clap 3.2.17",
  "flockfile",
  "futures",
  "mqtt_channel",
@@ -2841,7 +2841,7 @@ dependencies = [
 name = "tedge_apama_plugin"
 version = "0.7.3"
 dependencies = [
- "clap 3.2.14",
+ "clap 3.2.17",
  "roxmltree",
  "tedge_test_utils",
  "thiserror",
@@ -2853,7 +2853,7 @@ name = "tedge_apt_plugin"
 version = "0.7.3"
 dependencies = [
  "anyhow",
- "clap 3.2.14",
+ "clap 3.2.17",
  "csv",
  "hamcrest2",
  "reqwest",
@@ -2883,7 +2883,7 @@ dependencies = [
 name = "tedge_dummy_plugin"
 version = "0.7.3"
 dependencies = [
- "clap 3.2.14",
+ "clap 3.2.17",
  "thiserror",
 ]
 
@@ -2900,7 +2900,7 @@ dependencies = [
  "c8y_api",
  "c8y_smartrest",
  "c8y_translator",
- "clap 3.2.14",
+ "clap 3.2.17",
  "clock",
  "csv",
  "download",
@@ -2966,7 +2966,7 @@ name = "tedge_watchdog"
 version = "0.7.3"
 dependencies = [
  "anyhow",
- "clap 3.2.14",
+ "clap 3.2.17",
  "freedesktop_entry_parser",
  "futures",
  "mqtt_channel",
@@ -3027,9 +3027,9 @@ checksum = "c95968eedc6fc4f5c21920e0f4264f78ec5e4c56bb394f319becc1a5830b3e54"
 dependencies = [
  "cfg-if 1.0.0",
  "proc-macro-error",
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -3055,7 +3055,6 @@ dependencies = [
  "assert_matches",
  "clock",
  "criterion",
- "json-writer",
  "mockall",
  "mqtt_channel",
  "proptest",
@@ -3070,22 +3069,22 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.31"
+version = "1.0.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd829fe32373d27f76265620b5309d0340cb8550f523c1dda251d6298069069a"
+checksum = "f5f6586b7f764adc0231f4c79be7b920e766bb2f3e51b3661cdb263828f19994"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.31"
+version = "1.0.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0396bc89e626244658bef819e22d0cc459e795a5ebe878e6ec336d1674a8d79a"
+checksum = "12bafc5b54507e0149cdf1b145a5d80ab80a90bcd9275df43d4fff68460f6c21"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -3099,11 +3098,11 @@ dependencies = [
 
 [[package]]
 name = "time"
-version = "0.3.11"
+version = "0.3.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72c91f41dcb2f096c05f0873d667dceec1087ce5bcf984ec8ffb19acddbb3217"
+checksum = "db76ff9fa4b1458b3c7f077f3ff9887394058460d21e634355b273aaf11eea45"
 dependencies = [
- "itoa 1.0.2",
+ "itoa 1.0.3",
  "libc",
  "num_threads",
  "serde",
@@ -3143,9 +3142,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.20.0"
+version = "1.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57aec3cfa4c296db7255446efb4928a6be304b431a806216105542a67b6ca82e"
+checksum = "7a8325f63a7d4774dd041e363b2409ed1c5cbbd0f867795e661df066b2b0a581"
 dependencies = [
  "autocfg",
  "bytes",
@@ -3168,9 +3167,9 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9724f9a975fb987ef7a3cd9be0350edcbe130698af5b8f7a631e23d42d052484"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -3277,9 +3276,9 @@ checksum = "b6bc1c9ce2b5135ac7f93c72918fc37feb872bdc6a5533a8b85eb4b86bfdae52"
 
 [[package]]
 name = "tracing"
-version = "0.1.35"
+version = "0.1.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a400e31aa60b9d44a52a8ee0343b5b18566b03a8321e0d321f695cf56e940160"
+checksum = "2fce9567bd60a67d08a16488756721ba392f24f29006402881e43b19aac64307"
 dependencies = [
  "cfg-if 1.0.0",
  "log",
@@ -3294,16 +3293,16 @@ version = "0.1.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "11c75893af559bc8e10716548bdef5cb2b983f8e637db9d0e15126b61b484ee2"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
 ]
 
 [[package]]
 name = "tracing-core"
-version = "0.1.28"
+version = "0.1.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b7358be39f2f274f322d2aaed611acc57f382e8eb1e5b48cb9ae30933495ce7"
+checksum = "5aeea4303076558a00714b823f9ad67d58a3bbda1df83d8827d21193156e22f7"
 dependencies = [
  "once_cell",
  "valuable",
@@ -3398,9 +3397,9 @@ checksum = "099b7128301d285f79ddd55b9a83d5e6b9e97c92e0ea0daebee7263e932de992"
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15c61ba63f9235225a22310255a29b806b907c9b8c964bcbd0a2c70f3f2deea7"
+checksum = "c4f5b37a154999a8f3f98cc23a628d850e154479cd94decf3414696e12e31aaf"
 
 [[package]]
 name = "unicode-normalization"
@@ -3559,9 +3558,9 @@ checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.81"
+version = "0.2.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c53b543413a17a202f4be280a7e5c62a1c69345f5de525ee64f8cfdbc954994"
+checksum = "fc7652e3f6c4706c8d9cd54832c4a4ccb9b5336e2c3bd154d5cccfbf1c1f5f7d"
 dependencies = [
  "cfg-if 1.0.0",
  "wasm-bindgen-macro",
@@ -3569,24 +3568,24 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.81"
+version = "0.2.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5491a68ab4500fa6b4d726bd67408630c3dbe9c4fe7bda16d5c82a1fd8c7340a"
+checksum = "662cd44805586bd52971b9586b1df85cdbbd9112e4ef4d8f41559c334dc6ac3f"
 dependencies = [
  "bumpalo",
- "lazy_static",
  "log",
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "once_cell",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.31"
+version = "0.4.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de9a9cec1733468a8c657e57fa2413d2ae2c0129b95e87c5b72b8ace4d13f31f"
+checksum = "fa76fb221a1f8acddf5b54ace85912606980ad661ac7a503b4570ffd3a624dad"
 dependencies = [
  "cfg-if 1.0.0",
  "js-sys",
@@ -3596,38 +3595,38 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.81"
+version = "0.2.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c441e177922bc58f1e12c022624b6216378e5febc2f0533e41ba443d505b80aa"
+checksum = "b260f13d3012071dfb1512849c033b1925038373aea48ced3012c09df952c602"
 dependencies = [
- "quote 1.0.20",
+ "quote 1.0.21",
  "wasm-bindgen-macro-support",
 ]
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.81"
+version = "0.2.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d94ac45fcf608c1f45ef53e748d35660f168490c10b23704c7779ab8f5c3048"
+checksum = "5be8e654bdd9b79216c2929ab90721aa82faf65c48cdf08bdc4e7f51357b80da"
 dependencies = [
- "proc-macro2 1.0.40",
- "quote 1.0.20",
- "syn 1.0.98",
+ "proc-macro2 1.0.43",
+ "quote 1.0.21",
+ "syn 1.0.99",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.81"
+version = "0.2.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a89911bd99e5f3659ec4acf9c4d93b0a90fe4a2a11f15328472058edc5261be"
+checksum = "6598dd0bd3c7d51095ff6531a5b23e02acdc81804e30d8f07afb77b7215a140a"
 
 [[package]]
 name = "web-sys"
-version = "0.3.58"
+version = "0.3.59"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fed94beee57daf8dd7d51f2b15dc2bcde92d7a72304cdf662a4371008b71b90"
+checksum = "ed055ab27f941423197eb86b2035720b1a3ce40504df082cac2ecc6ed73335a1"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
diff --git a/crates/core/thin_edge_json/Cargo.toml b/crates/core/thin_edge_json/Cargo.toml
index 1817629e..f3f293af 100644
--- a/crates/core/thin_edge_json/Cargo.toml
+++ b/crates/core/thin_edge_json/Cargo.toml
@@ -9,7 +9,6 @@ rust-version = "1.58.1"
 
 [dependencies]
 clock = { path = "../../common/clock" }
-json-writer = { path = "../../common/json_writer" }
 mqtt_channel = { path = "../../common/mqtt_channel" }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1"
diff --git a/crates/core/thin_edge_json/src/serialize.rs b/crates/core/thin_edge_json/src/serialize.rs
index 0c307ec0..2f755f14 100644
--- a/crates/core/thin_edge_json/src/serialize.rs
+++ b/crates/core/thin_edge_json/src/serialize.rs
@@ -1,12 +1,25 @@
+use std::collections::HashMap;
+
 use crate::measurement::MeasurementVisitor;
-use json_writer::{JsonWriter, JsonWriterError};
-use time: